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Heat pumps are an efficient and cost-effective way to regulate temperatures in homes, businesses, or other buildings. By connecting a refrigerant cycle with an air, water, or ground source heat exchanger, a heat pump can deliver both cooling and heating solutions depending on the climate. Heat pumps offer numerous advantages compared to traditional systems like fossil fuel furnaces and central air conditioners due to their energy efficiency, up to 40% savings. In this blog post we will discuss common types of heat pumps available today including Air Source Heat Pumps (ASHP), Ground Source Heat Pumps (GSHP), Hybrid Heat Pumps (HHP), Water Source Heat Pumps (WSHPs) and Cold Climate Heat Pumps as well as look at how you can determine which type is right for your needs.
Image of a heat pump
- Heat pumps are an efficient and cost-effective way to regulate temperatures in homes, businesses, or other buildings.
- There are five main types of heat pumps: Air Source Heat Pumps (ASHP), Ground Source Heat Pumps (GSHP) Hybrid Heat Pumps (HHP), Water Source Heat Pumps (WSHPs) and Cold Climate Heat Pumps.
- Each type offers different advantages depending on the climate such as improved comfort levels while reducing energy costs and emissions.
- Hybrid systems combine the efficiency of a conventional air-source or ground source pump with traditional gas furnace for optimal performance even during extreme weather conditions.
What Are Heat Pumps And How Do They Work?
A heat pump is an energy-efficient system that can provide heating and cooling to your home. The pump uses electrical energy to transfer heat from one place to another, depending on the season.
During colder months of the year it can take in outdoor air or use other sources of heat like ground water/inertia, while in summer time it generates cold air from existing outdoor or indoor temperatures.
The main types of pumps are air source pumps, ground source/geothermal pumps, hybrid pumps (which typically combine more than one type), water-source/aquifer systems, and ultra-cold climate products specifically designed for extremely cold climates.
Air source models are typically connected by ducts which establish a constant temperature exchange between indoor space and outside environment. It is great for moderate climates with minimal temperature variations.
Ground source units require drilling into earth’s surface up to several hundred depths resulting in an exchange of thermal solar energy stored deep down below. It is suitable in areas where natural geology permits such installations.
Hybrid variants integrate both fossil fuel backup as well as ventilation system relief. It is best solution for those who wish reliable 24/7 support and worry little about environmental footprint.
Water Source involves fluid exchanges either coming from nearby body waters or distributed through network piping stored at certain level. It is very useful especially when normally available forces cannot be fully harnessed.
Cold Climate necessitates special measures such as multiple evaporators but also provides great insulation results even during extremely low winter temperatures. It is a perfect fit if you happen to live among snow blizzards.
At its core, no matter what type is used, all Heat Pumps contain four components. An outdoor unit contains compressor coils that circulate refrigerant liquid between them so that they create zero discharge clean cycle supply.
This process enables absorption of ambient conditioning elements (such hot water) away or inside premises hosting residential customers , while preserving constant airflow patterns indoors possibly combined with other chemical substances released by internal fertilizers, thus leading towards a steady amount of warmth availability .
Types Of Heat Pumps
Heat pumps are available in a variety of types, ranging from air source to geothermal. Each type brings different pros and cons for specific climates and energy demands. Understanding the differences between them can help you select the best option for your needs.
Air Source Heat Pumps
Air Source Heat Pumps (ASHP) are a type of heat pump technology that uses the air outside to provide efficient indoor comfort by providing both heating and cooling.
With ASHP, refrigerant absorbs heat from the air outside, then using a compressor and an outdoor-mounted unit, it moves this heat energy inside your home or commercial building as warmth during winter months.
Not only do Air Source Heat Pumps prove highly efficient at controlling temperature but they also save significant amounts of energy while reducing their emissions. On average up to two-thirds more than conventional heating systems such as oil furnaces or baseboard electric systems and provides very cost effective option allowing for increased savings over time.
Furthermore, there are three different types of ASHP available that cater specifically to different needs, the ducted distribution provides great centralized airflow and adapts easily into existing ductwork, Ductless mini split systems offer flexibility with multiple zone heads, Hybrid distributed combines elements from both propane/oil backbone and electrically driven supply able to cover even extreme cold climates throughout Canada.
Ground Source Heat Pumps
Ground source heat pumps, also known as geothermal heat pumps, are a highly efficient way of heating and cooling buildings. Instead of relying on energy from traditional sources such as burning fossil fuels or electricity from the grid to cool your home or building, ground-source systems extract natural heat stored below the surface of the earth for space conditioning.
To do this, liquid refrigerant is circulated through an underground pipe system which uses shallow wells drilled into rock masses below the frost line or open loop systems that use body of water like canals or rivers.
Because it utilizes thermal energy instead of burning fuel, ground-source cooling offers numerous benefits over other types of heating systems including lower operating costs due to higher efficiency ratings, typically achieving over 300% compared to 95% for traditional oil and gas furnace models and improved comfort levels with consistent temperatures maintained, plus zero emissions compared to regular furnaces making them significantly more Eco friendly and better suited for areas where environmental regulations have been implemented.
Also worth noting is that since no fuel needs to be purchased upfront installation costs are relatively low making them especially attractive options in residential applications where budget restrictions may come into play.
Hybrid Heat Pumps
Hybrid heat pumps combine the efficiency and affordability of a conventional air-source or ground-source heat pump with the reliability of a traditional gas furnace.
The two systems work together to perform in an energy-efficient manner by alternating between using the electric heat pump and the gas furnace depending on outdoor temperatures, providing steady temperatures indoors even during winter’s coldest days.
Hybrid heat pumps are typically more expensive than other single system options but they offer savings from significantly reduced electricity costs as well as lower emissions which benefit both you and your surrounding environment.
Furthermore, hybrid systems require less maintenance than individual units because it can share components with one another such as condensate lines, filters, fans, and/or thermostat wiring, making repairs simpler over time while ensuring optimal performance levels for longer periods of time compared to single unit setups.
Water Source Heat Pumps
Water Source Heat Pumps (WSHP) function similarly to traditional air source heat pumps, but instead of using a single outdoor unit they use an indoor and outdoor unit connected to a loop that provides hot or cold water as its source of energy.
The compressor itself is housed in the indoor unit, which contains coils that absorb and reject heat depending on whether the system is running in heating or cooling mode.
This warm or cold water then circulates through the building for process applications like space heating, cooling, domestic hot water production etc. WSHPs are highly efficient systems with low operating costs since there’s no need for either fossil-fueled furnaces or air conditioning units.
Additionally, WSHPs can also be cheaper to install than alternative systems due to their simpler design and decreased labor requirements associated with installation.
It is making them ideal for new construction projects but also retrofit opportunities where installing additional ductwork may not be feasible.
Cold climate heat pumps are designed to withstand and operate efficiently in low temperatures. Traditional heat pumps struggle in colder climates unless they have been combined or upgraded with other technologies for supplemental heating like electric resistance, which raises the system’s efficiency rating but also increases its cost.
Cold climate air source heat pump systems are specifically designed for these types of environments as they can still collect sufficient amounts of heat when outdoor temperatures drop below freezing and transfer this into your home, all while using less energy than regular systems.
Heat pumps intended for cold climates typically come in two forms: centrally ducted models – that include an indoor unit connected to ductwork and a large outdoor unit; or mini-split units – a smaller option featuring individual fan coils mounted throughout each room with an outside compressor/condenser combo providing separate temperature control without needing secondary equipment like ductwork.
Pros And Cons Of Different Types Of Heat Pumps
It is important to consider the pros and cons of different heat pump models in order to choose the most suitable option for your needs.
Heat pumps are one of the most energy-efficient ways to heat and cool a home, as they transfer thermal energy from one place to another without creating additional heat.
Heat pumps use refrigerant that is heated indoors and then cooled outdoors, or vice versa. To measure a unit’s efficiency, we look at two main factors: SEER ratings (Seasonal Energy Efficiency Ratio) and COP (Coefficient of Performance).
The higher the SEER rating, the more efficient it is. This indicates how much cooling output each watt of electrical power input produces.
A lower COP rating means less heating output for every watt used in electricity consumption, so an air source heat pump with a high SEER and low COP will be very economical over time.
In terms of environmental impact, newer models can have up to 30 percent fewer emissions compared to traditional systems due to their advanced technology designs.
For example, Mitsubishi’s MXZ hybrid line has both high SEER ratings (up to 33) and low operating noise levels for improved comfortability when running the system continuously during summertime peak loads.
Heating And Cooling Capacity
When it comes to heating and cooling, heat pumps offer a versatile energy solution. Air-source heat pumps are the most popular type of system as their ability to move cool or warm air around means they can both heat and cool spaces quickly and efficiently.
Ground source or geothermal systems use loops of pipe buried underground which absorbs natural thermal energy from the soil beneath them, helping to keep buildings at comfortable temperatures throughout the year.
These systems tend to have higher installation costs but generally require minimal maintenance and offer greater levels of control over indoor temperatures compared with air-source systems.
Water source models work by transferring small amounts of warmth from one single water source such as a lake or pond into buildings, making them perfect for areas near large bodies of water.
When shopping for a heat pump, noise levels can be an important consideration. Generally speaking, air source and ground source heat pumps tend to be noisier than other types of heating systems due to their fans.
On average, outdoor units of these systems tend to run roughly 50-60 decibels (dB), while indoor mini-splits are typically quieter at between 18 and 36 dB.
Cold climate heat pumps usually make more noise when compared with their air-source counterparts as well, as they’re often equipped with additional electric resistance elements that add operational sound.
Ductless mini-split technology is the quietest option, registering only 40 dB indoors on average, around the level of soft whisper or rainfall outside.
There are several steps homeowners can take in order to minimize noise disturbances from their HVAC system such as selecting models with higher SEER ratings that produce less compressor sound or dampening unit vibrations by installing insulated mounts beneath their unit.
When considering the installation of a heat pump, homeowners should be aware of a number of requirements. Firstly, selecting the ideal location for the indoor and/or outdoor unit is vital in order to maximize energy efficiency.
If possible, installers often recommend areas with no obstructions or distractions such as leaves or limbs from nearby trees. The most efficient locations will be those free from both warm and cool air drafts which can prevent proper operation.
Secondly, certain components may need to be present in order for installation to go ahead such as adequate insulation around pipes transferring soil temperatures and power supply points allowing electric pumps to operate.
Lastly, it’s important that an experienced specialist oversee all stages of installation due to their experience in dealing with both minor issues such as restricted access due to impractical positioning and larger problems like unsuitable foundations or inefficient wiring connections leading to inadequate electrical output.
Heat pumps can provide efficient and cost-effective heating and cooling solutions for many years, typically between 15 to 20 years.
However, how long a heat pump lasts will depend on factors such as maintenance schedules, usage patterns, climate conditions and the quality of the product itself.
To ensure that your heat pump runs at maximum efficiency and has an extended lifespan, it’s recommended that you schedule regular maintenance checks with a professional technician to identify any potential problems before they become bigger issues.
Additionally, running your heat pump efficiently by setting it at comfortable temperatures and avoiding excessive use could add more years to its life span.
Choosing The Right Heat Pump For Your Needs
When deciding what type of heat pump is best for your home, it’s important to consider energy efficiency ratings, upfront costs and lifetime savings to make an informed choice.
Factors To Consider
When choosing a heat pump, it is important to think through several factors such as house size, living space layout, climate and overall efficiency ratings.
House size is an essential component in determining the necessary capacity of your heat pump unit and how efficiently energy can be used.
For a larger house a higher operating capacity may be necessary for optimal temperature control and energy conservation. Living space layout should also be considered when selecting your heat pump as different rooms can have differently sized windows which influence the rate of heating/cooling achieved by the system.
Climate conditions are another key factor to take into account when looking for the most appropriate type of heat pump. Extreme temperatures require more powerful pumps that are typically used in cold areas but may become costly if installed in areas with milder climates.
Additionally, it’s worth noting that due to drastic drops in temperature outside during winter months some types of air-to-air heat pumps might not work well regardless of their cooling or heating capacities. Therefore you should consider supplementing them with other sources such as fossil fuel options like furnaces or electric baseboards depending on what would result in most savings over time for your household needs.
Energy Efficiency Ratings
When it comes to purchasing a heat pump, the most important factor to consider is its energy efficiency rating. Heat pumps are rated for their SEER (Seasonal Energy Efficiency Ratio), which indicates how much cooling they can provide per unit of energy used, and HSPF (Heating Seasonal Performance Factor), which determines how effective they are at heating over an entire season.
Generally speaking, higher SEER and HSPF ratings mean greater efficiency and lower running costs. A heat pump must have at least an 8.5 Heating Seasonal Performance Factor in order to qualify as Energy Star certified.
When choosing a heat pump system, it is important to consider the upfront costs associated with purchasing and installing the unit as well as ongoing maintenance fees.
On average, an air-source heat pump including professional installation will range from $3,500 to $7,500 depending on size and quality of materials used.
Installation fees can range from several hundred dollars for small jobs up to thousands of dollars for complex installations such as a ground source or water source heat pump replacement.
Maintenance expenses should also be taken into account when determining total cost over time. These may include regular upkeep such as filter cleaning or seasonal inspections in addition to possible repairs due to general wear and tear.
Incentives offered at both state and federal levels are available to help defray some of the costs associated with buying and efficiently operating a new heat pump system (energy credits).
Homeowners who purchase an energy-efficient air-source heat pump can qualify for rebates from Efficiency Maine Trust amounting up to hundreds of dollars after eligibility requirements have been met.
Consulting With A Professional
Hiring a professional HVAC Service Provider prior to installing a heat pump is strongly recommended. With their experience, expertise, and knowledge of your home’s specific needs, budget constraints, and climate conditions, professionals can help choose the right type of heat pump that best fits your lifestyle and needs.
Through consultation with them, such as determining whether you should opt for air-source or ground-source heat pump, they can provide valuable advice to ensure energy efficiency and cost savings in the long run.
For instance, if you live in a cold climate area where temperatures regularly dip below minus ten degrees Celsius during winter months then choosing an air-source unit for heating may not be sufficient enough due to its low-efficiency factor when compared to other types of heat pumps like water source or hybrid units that have been designed specifically for colder temperatures.
Additionally even correctly installed systems require maintenance work (i.e., filter replacement) which will need particular attention from a qualified technician who has the necessary experience in order for it all to function properly.
Maintenance And Care For Heat Pumps
Regular cleaning and filter replacement are important for maintaining heat pump efficiency, as well as periodic maintenance checks to address any issues that may arise.
Regular Cleaning And Filter Replacement
Regular cleaning and filter replacement are essential maintenance tasks for heat pumps. If the filters, coils, and fans of a heat pump become dirty or clogged up with debris, that can significantly reduce its performance efficiency.
Water sourced heat pumps also need regular attention. This often entails periodic cleaning and changing of filters, again dependent upon the manufacturer’s warranty information on items such as options for compatible filters.
Seasonal Maintenance Checks
Regular seasonal maintenance check-ups are essential for keeping your heat pump running at peak performance. Your local HVAC professional can perform these checks and help keep your energy bills low, extend the life of your unit, increase its efficiency, and prevent costly repairs.
During a tune-up or maintenance visit from an HVAC technician, they should inspect the air filter, and check all components in the system such as coils and motors for signs of wear and tear.
Other important tasks that should be done during a seasonal maintenance check include,
- checking refrigerant levels,
- checking airflow to ensure proper temperature regulation;
- ensuring all electrical connections are secure;
- cleaning condensate lines;
- checking the fan speed on both indoor and outdoor units;
- making sure that no oils or grime have built up on any components in the system;
- testing thermostat operations;
- lubricating parts such as fans, bearings, shafts, etc.;
- verifying safety devices like pressure switches are properly calibrated;
- performing cleaning when needed to prevent corrosion issues.
Troubleshooting Common Issues
|Blowing cold air in heat mode||Dirty or clogged air filters||Regularly clean or replace air filters to ensure proper airflow and heating performance|
|Running constantly even in mild weather||Decreased efficiency due to dirty air filters||Loud noise from the outdoor unit|
|Loud noise from outdoor unit||Mechanical issues or malfunctioning components||Consult a qualified technician to diagnose and repair the specific problem with the outdoor unit|
|Water leaks||Faulty condensate drains or blocked condenser coils||Have a professional inspect and clean the condensate drains and remove any obstructions from the condenser coils|
|Not heating or cooling properly||Low refrigerant levels or faulty defrost controls or sensors||Contact an experienced technician to check refrigerant levels and inspect defrost controls for any issues|
|Elevated energy bills and lower temperatures than expected||Blocked condenser coils or dirty condensate drains and fins||Arrange for specialized cleaning of the condenser coils and condensate drains to improve efficiency|
Energy-efficient Heat Pump Models
High SEER (Seasonal Energy Efficiency Ratio) ratings demonstrate which models are most efficient for homeowners, while factors such as energy star labels can indicate the level of environmental sustainability.
The Seasonal Energy-Efficiency Rating (SEER) is the most important aspect to consider when purchasing a heat pump. SEER ratings measure how efficiently an air conditioner or heat pump cools homes.
A unit with a higher SEER rating will be more efficient than one with a lower rating. For example, an AC/Heat Pump model rated at 17 SEER is considered highly efficient in comparison to those rated at 13–14 SEER.
The efficiency of Heat Pumps can also depend on their size and type, such as mini splits that often come in higher multiples of 10+ for capacities under 25,000 BTU capacity and coils which are categorized into Class One or Two heating mode performance levels.
While many average models cap off around 20–21 SEER from mainstream brands, some eco-friendly options go up to 42 depending on your specific needs and budget.
Heat pumps are a greener alternative to traditional heating systems that rely on fossil fuels, such as oil and natural gas. There are many energy-efficient heat pump models on the market today that incorporate renewable energy sources into their design while reducing energy consumption or carbon emissions from electricity usage.
For example, some products use solar panels to supplement the electric compressor motor for increased efficiency and next-generation air-source heat pumps can offer SEER (seasonal energy efficiency ratio) ratings up to 25 which is significantly higher than current standard ratings of 15 – 18.
Renewable Energy Sources
Due to their efficiency advantages, heat pumps are becoming increasingly popular as a means of heating and cooling. Renewable energy sources such as solar panels can be used to power air source heat pump systems, making them clean and energy efficient.
Geothermal energy is also considered a renewable resource which can provide both heating and cooling through ground source heat pumps or direct use geothermal technologies.
These systems function by transferring thermal energy from the Earth or an outside ambient air source into your home’s interior space for heating. They reverse this process in order to offer cost-effective cooling during hot weather.
Heat Pumps For Residential And Commercial Use
Heat pumps are an ideal choice for residential and commercial spaces, providing both heating and cooling solutions that are customizable to specific space needs.
Heating And Cooling Capacity For Different Spaces
When selecting a heat pump, it is imperative to accurately size and install the unit based on the specific needs of your space. Heat pumps are rated by their ability to move energy from one area (outdoor) to another (indoor).
For example, an oversized heat pump will tend to cycle too quickly and use more electricity than necessary. On the flip side, an undersized heat pump may not be able to adequately provide the amount of warm or cool air needed for peak comfort levels while also raising electric bills due to operating time being extended beyond normal parameters.
Ductless Heat Pump Options For Older Buildings
Ductless heat pumps, also known as mini-split systems, are a great option for older buildings since they don’t require extensive remodeling.
Their smaller size and flexibility make them easy to install in existing floors or near walls where there is not enough space for full ductwork.
Unlike the central units found in many modern heating and cooling systems, ductless air conditioners rely on individual indoor and outdoor units that are connected through small pipes carrying refrigerant.
This makes installation simpler both inside and outside of the building. Additionally, because ductless systems do not transport hot air throughout the house or office like traditional HVAC systems would, they can reduce energy loss by up to 30 percent, making them significantly more efficient than other options available.
Compact Heat Pump Models For Limited Installation Spaces
Compact heat pump models offer an incredibly space-saving way to get year-round, energy efficient heating and cooling in both residential and commercial spaces.
These systems are designed to provide more comfortable temperatures while using less energy than the traditional HVAC system they replace. They usually consist of a unit with indoor coils, condenser coils, piping for refrigerant flow, a fan motor, compressor, and indoor distribution unit like grilles or ducts.
Many geothermal models come with improved two-speed compressors as well as variable fans that allow for even greater levels of efficiency.
Compact heat pumps have high SEER (Seasonal Energy Efficiency Ratio) ratings that make them highly efficient choices for homeowners seeking to reduce their carbon footprint since they rarely use fossil fuels when operating at maximum efficiency ratios during certain seasons.
Additionally, being small in size means installation is much easier if there isn’t ample room to place a standard system outdoors. Additional features such as end caps can further assist these streamlined units with blending into existing surroundings without detracting from the home’s aesthetics.
Federal tax credits and state rebates may help defray initial purchase costs making them all the more appealing.
Comparison Of Hybrid Heat Pumps And Traditional Models
Hybrid heat pump systems are more energy efficient than traditional models, offering a higher efficiency rating and lower ongoing operational costs.
Energy efficiency is one of the most important considerations when deciding which type of heat pump to purchase. Air-source heat pumps, for example, are considered extremely energy efficient and can save home owners significant amounts of money on utility bills due to reduced operating costs over other forms of heating.
The higher the energy star rating a heat pump has, the more it will cost upfront but oftentimes there are rebate programs that make these products more accessible to lower-income households.
Heat pump water heater research has also been focused on system energy efficiency and performance topics such as how well temperatures remain consistent when compared with traditional models or how much noise they generate while in operation.
When selecting a heat pump for your home or business, it is important to consider the long-term costs associated with the system user. Installation cost will be a major factor in determining the most cost-effective option available.
Most heating pumps require an initial installation fee as well as consideration of energy efficiency ratings and maintenance costs over time.
To get an accurate picture of both short-term and long-term expenses related to owning your own heat pump, always remember to factor in all these price points before settling on a purchase decision.
Moreover, when factoring energy efficiency ratings, keep in mind that while units with higher numbers often garner higher upfront fees. They can pay off over time due to their decreased energy demand and lower monthly utility bills.
Furthermore, when considering a unit’s longevity research its technology type and lifespan expectancy prior to wasting precious resources replenishing costly purchases prematurely.
Benefits And Drawbacks
Heat pumps offer a variety of advantages over other heating systems, including improved energy efficiency, more uniform and comfortable temperatures in the home, space or water heating capabilities without additional components, decreased reliance on fossil fuels, low emissions as well as silent operation.
However depending on various factors such as climate and budget constraints, there are potential drawbacks. Air source heat pumps rely principally on outside air for energy production which in cold climates can make them much less efficient than alternative solutions. Ground-source heat pumps are far more expensive to install than air heat pumps requiring extensive digging.
Water source systems may require considerable piping infrastructure to be installed if no nearby body of water is available.
Hybrid models tend to reduce upfront costs but offer lower efficiencies when compared with traditional air and ground source pump systems.
For cold climates or where the indoor noise level is a concern Cold Climate Heat Pumps (typically found near coastal area) come highly recommended due to their ability to operate effectively under most extreme conditions while running quietly indoors.
What are the different types of heat pumps?
The four main types of heat pumps are air-source, water-source, geothermal and absorption heat pumps. Air-source heat pumps use the outdoor air for heating and cooling; while water-source uses a body of groundwater or surface water to extract warm or cool air from; geothermal utilizes subsurface earth loops to transfer thermal energy between indoors and outdoors; whereas absorption systems use an external source such as natural gas or propane fuel and waste heat expelled from other sources like boilers or generators.
What is the most efficient type of heat pump?
Geothermal systems provide some of the highest efficiency levels up to 600%. This type draws on more consistent temperatures below ground compared with ambient outdoor temperatures that fluctuate throughout seasons which makes them ideal in colder climates where extreme temperature changes occur often during year transitions making it more economical option when long term savings are factored into decision making process.
How do I know what type of heat pump is right for my home?
Depending on climate conditions, cost/budget availability, location & square footage, consult a professional HVAC technician who can review all available options & determine the best choice given the specifics surrounding the individual’s residence focusing on both immediate needs & cost benefits over lengthier terms so customers understand how each selection will impact financial resources short/longer term respectively before final decisions made about installation costs associated w/ respective system installations etc.
Are there any factors to consider when selecting a new Heat Pump unit?
Yes, several considerations include the size of existing space (not just floor space but height ceilings too as the capacity of this impact is needed), total volume expected to be heated or cooled, climate conditions etc. Additionally, any special features if the homeowner wants that also should be considered.
There is no one-size-fits-all when it comes to heat pumps. Every home and space has its own needs and so selecting the right type of heat pump that meets those needs, while also being cost and energy efficient is essential. Air source, ground source, water source, hybrid models, cold climate choices or a traditional fossil fuel system can all be considered for residential or commercial use depending on location and demands. When making your selection, consult with a professional heating technician as they are well-versed in understanding what works best for each situation based on requirements, such as available space in an older building or colder climates. Efficient systems are marked by high SEER ratings (seasonal energy efficiency ratios) that operate optimally even during extreme temperatures while charging cheaper upfront costs compared to other types of heating options such as electric baseboards or gas furnaces.