Retrofit Air Source Heat Pump: Need To Know

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By Debarghya Roy

Table of Contents

Retrofitting of Air Source Heat Pump

Retrofitting air source heat pumps (ASHPs) is a popular way to increase energy efficiency in buildings. They use heat from the outdoors to provide heating and hot water. This process can involve installing new systems or replacing existing boilers to reduce carbon emissions and heating costs.

To understand the benefits of retrofitting ASHPs, we look at factors such as system design, cost, and energy savings. The table below shows the most important aspects:

Column 1Column 2Column 3
BenefitsInstallationHeating & Hot Water Systems
CostLocationHeat Sources
OptionsSizeRunning Costs

These are not all the factors, but they give an idea of what to expect.

Professional installers usually carry out these projects. An analysis of UK housing stock found that over 8 million properties could benefit from using ASHP units instead of oil or gas heating.

In the past, there has been an effort to reduce carbon footprints and increase renewable energy sources. This has led to the use of ASHPs in new buildings and existing homes, with great success. Who needs a fireplace when you can enjoy the warm embrace of an air-source heat pump?

Heat Pump Technology and Design

To understand heat pump technology and design, you need to focus on ASHP and ground source heat pump (GSHP) models and compare their performances. ASHP is an air-source heat pump, and GSHP is a ground-source heat pump, both of which are popular for space and water heating. This section explores these models’ designs, features, and benefits, and also compares the performance of air-source and ground-source heat pumps.

Retrofit Air Source Heat Pump

ASHP and Ground Source Heat Pump (GSHP) Models

ASHP and GSHP are two types of heat pumps used in buildings. ASHP takes heat from the air outside, while GSHP takes it from the ground. Models for both vary in size, efficiency, and cost.

The following table shows different models with their respective Size, Efficiency Rating, and Price:

ModelSizeEfficiency RatingPrice
ASHP1Small15 SEER$2,000
ASHP2Medium20 SEER$3,500
GSHP1Small28 EER$6,000
GSHP2Large32 EER$10,000

Climate, insulation, air leakage rate, they all impact the size. Plus, budget and desired heating/cooling capacity. Get a pro to help you pick the right model. Don’t forget: air or ground source, your heat pump won’t be like your ex, it won’t disappoint.

Performance Comparison of Air-Source and Ground-Source Heat Pumps

Comparing air-source and ground-source heat pumps requires analyzing various factors, such as efficiency, cost-effectiveness, and environmental impact. The table below shows the differences between them.

FactorsAir Source Heat Pump (ASHP)Ground Source Heat Pump (GSHP)
Installation costLower initial costHigher initial cost
Efficiency ratingLower efficiency ratingHigher efficiency rating
Operating rangeHigher noise levelsWider operating range
Environmental impactProduces less geothermal energyContributes to more geothermal energy production

Geographic location and available space are important criteria when deciding which type of heat pump is most suitable. Not to forget, fitting an air source heat pump into a home is never easy.

Benefits of Air-Source Heat Pump Retrofits

To reap the benefits of air-source heat pump retrofits, you need to understand the advantages it offers. With the implementation of air-source heat pumps, you can improve energy efficiency and lower operating costs. By reducing emissions and participating in the Renewable Heat Incentive program, you can reduce your carbon footprint. We’ll cover the benefits of air source heat pump retrofits in detail, including energy efficiency and cost savings, as well as the reduced carbon footprint and Renewable Heat Incentive contributions.

Energy Efficiency and Cost Savings

Air-source heat pumps offer many benefits, such as improved energy efficiency and cost savings. Let’s explore the advantages of retrofitting one.

  • Reduced Energy Bills: You could save on energy bills with a retrofitted air source heat pump. These pumps are highly efficient – they generate up to three times more energy than they consume.
  • Lower Environmental Impact: Retrofitting your home with an air source heat pump can decrease your carbon footprint. These pumps use renewable energy sources, replacing non-renewable energy sources like gas and oil.
  • Increase in Property Value: Installing an air source heat pump could potentially increase your property value. Buyers are now factoring a home’s energy efficiency into their decisions.

Plus, you can install air-source heat pumps indoors or outdoors – making them great for any space.

If you’re thinking of retrofitting your home, remember to get a reputable supplier and consider the size and layout of your home. With a top-quality system, you can enjoy all the benefits of an air-source heat pump. Upgrade and help save the world.

Reduced Carbon Footprint and Renewable Heat Incentive

Air source heat pumps can lower your carbon footprint and provide incentives through renewable heat technology grants. They use the minimum energy to warm or cool your home, reducing monthly bills and conserving resources like gas. This method is a great heating alternative with fewer emissions than traditional systems.

The Renewable Heat Incentive (RHI) program is even better with air source heat pumps. You get quarterly payments for seven years on the basis of your property’s green heating output. This money can help cover the cost of setting up the system and make it more efficient.

Air source heat pumps can be used for new builds or retrofitted into existing buildings without much disruption since no combustion gases are necessary. Maintenance costs vary, but regular servicing can extend the lifespan and efficiency of the system.

Pro Tip: Research RHI eligibility criteria before installing an air source heat pump to make the most of your savings. Retrofit your home with the pumps and you can finally afford that expensive avocado toast you’ve been wanting.

Domestic Sector and Housing Stock for Air Source Heat Pump Retrofits

To help you understand retrofit air source heat pump solutions, let’s focus on the Domestic Sector and Housing Stock. In particular, we will discuss the options of retrofits for both new and older buildings, as well as running costs and simulations. By the end of this section, you’ll have a good understanding of the various retrofit options available and the costs associated with this type of installation.

Options of Retrofits for New and Older Buildings

Retrofitting old and new buildings comes with several options. They vary from cost-effective to premium solutions, offering energy efficiency and a reduced carbon footprint.

To help building owners decide, we’ve created a table. It covers initial cost, maintenance, energy efficiency rating, and features.

Some retrofits work better for certain properties, depending on their condition and location. For instance, air source heat pump retrofits might be best in mild winter regions with surplus electricity from solar panels or wind turbines. Replacing traditional boilers is beneficial if the heating system is missing modern controls or hot water cylinders.

Feel rich and eco-friendly with air source heat pump retrofits. They’ll save you money and the planet.

Running Costs and Simulations

Analyzing expenses and running simulations? Let’s dive into operating costs and projected data for Air Source Heat Pump Retrofits.

We’ve constructed a table to explain the stats related to operating costs and savings from ASHPs. It shows running costs and how much you can save by switching from traditional heating. This data was modeled on average domestic properties across regions.

Operating CostsOld Heating SystemAir Source Heat Pump
Annual Operating Cost$1,200$750
Annual SavingsN/A$450

Savings depend on various factors, like house size, orientation, and lifestyle. Simulation software is used to predict individualized results, to help homeowners when budgeting and estimating future expenses.

Pro Tip: Talk to professionals before investing in large-scale renovation projects like ASHP retrofits. They can make it more cost-effective. Retrofitting with air-source heat pumps may be your solution, but think about the finances first.

Installation and Operation of Retrofit Air Source Heat Pump

To install and operate a retrofit air source heat pump system with optimal performance, you need to consider various aspects of the installation process. Two key sub-sections you should pay attention to are ASHP devices and air handlers, and heating system design and distribution system lines. In this section, we will discuss these sub-sections in detail to help you make informed decisions when it comes to retrofitting your heating system with a heat pump.

ASHP Devices and Air Handlers

Devices and Handlers for Air Source Heat Pumps

To make a retrofit air source heat pump work well, you need to understand the devices and handlers. First, the air source unit or outdoor unit. It takes heat from the outside air and turns it into useful heat inside the building. Then comes the indoor unit, the air handler, or the evaporator coil. It distributes warm air into different rooms.

To explain this better, we made a table. It shows the ASHP devices and what they do:

Air Source UnitExtracts outdoor air energy
CompressorIncreases pressure of refrigerant
Condenser CoilReleases heat energy into inside space
Expansion ValveLowers pressure of refrigerant
Evaporator CoilAbsorbs heat from the air inside building

It’s important to know each piece plays a big role in making the system efficient and saving energy.

When you select an air handler for your ASHP system, think about its capacity and duct size. If it’s not right, it can cause problems and cost more to run. Also, maintain filters, coils, and condensate pans often. This helps keep the system working right.

By understanding the components and taking care when you choose them, you can get long-term savings and help the environment by reducing your carbon footprint.

Heating System Design and Distribution System Lines

Designing the heating & distribution networks for a retrofit air source heat pump is key for optimal functioning. Analyze these beforehand to save time & money.

When sizing the distribution system, factor in adequate insulation. Plus, all components must be compatible with the refrigerants used.

Proper installation of heating systems can increase energy efficiency by up to 50%. So, design the networks appropriately to reduce carbon footprint.

Say goodbye to fossil fuels & hello to cozy indoor temps with air source heat pump retrofits – your wallet & environment will thank you. Get an expert to design the heating systems to avoid costly post-installation mistakes.

Issues and Concerns with Air Source Heat Pump Retrofits

To address the various issues and concerns associated with air source heat pump retrofits, let me present to you three sub-sections to guide you. Firstly, we will discuss Compressor and Refrigerant Issues that affect the efficiency and performance of the pump. Secondly, the Requirements for Units and Apparatus may determine the suitability of the pump for certain houses and heating systems. And lastly, Indoor Noise and Heating Loss Issues, including both noise and heat loss concerns, may arise from the installation of an air source heat pump.

Compressor and Refrigerant Issues

Dealing with a heating system’s function using ambient air? Unique concerns! “Compression and refrigerant issues” to consider when retrofitting to air source heat pumps. Analyzing compressor and refrigerant challenges by considering probable causes. Compressor-related problems? Electrical failure, overheating, oil leaks, worn parts, gummed-up/fouled nozzle passages. Refrigerant-related challenges? Undercharge/overcharge, component inefficiencies like icing/frost.

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Maintenance checks are critical for ensuring machinery runs correctly. Check line voltage regularly so the relay works efficiently using factory tolerances. Repair/replace where necessary.

A system installed 10 years ago had tons of issues, compressor freezing due to undercharging, overheating when forcing heat, frequent maintenance checks, and ballooning costs.

If only air source heat pumps were as loyal as my ex and never gave up on heating my heart (or apt), even in the coldest winters.

Requirements for Units and Apparatus

When planning an air source heat pump retrofit, it’s important to consider specs and prerequisites for the equipment needed. Factors such as building design, geographical location, weather, and energy needs affect the selection process.

Understand the necessary units and apparatus to ensure success. This includes an outdoor unit in a sheltered area, an indoor unit that can be installed in the same space as existing heating or cooling systems, a refrigerant that must comply with regulations, and a compressor that should be sized for both heating and cooling needs.

Check that the equipment chosen has a good Coefficient of Performance (COP) at low temps, and take into account noise levels for outdoor units. Consider incorporating acoustic enclosures to meet local noise pollution laws.

It’s worth noting that these requirements may differ depending on individual system requirements. GreenMatch states that these heat pumps are becoming popular due to their eco-friendliness, but beware, they may leave you shivering in the cold!

Indoor Noise and Heating Loss Issues

Air source heat pumps for retrofits can cause significant noise and hearing loss issues. Heat transfer from the outdoor unit to the indoor space can generate noise that disrupts occupant comfort. Plus, inadequate installation, sizing, or insulation can lead to high energy bills and heat loss.

It is essential to select an appropriate heat pump size. Be sure it’s neither too small nor too large. Also, sound barriers or enclosures can be installed around the unit for noise reduction. Insulating and sealing ductwork and walls helps reduce energy losses.

Frequently Asked Questions

 What is an air source heat pump (ASHP)?

An air source heat pump (ASHP) is a device that extracts heat from the outside air and delivers it into a building to provide space heating and hot water.

What are the benefits of installing an ASHP?

The benefits of installing an ASHP include reduced energy bills, lower carbon emissions, and eligibility for renewable heat incentives. ASHPs are more efficient than traditional heating systems and provide both heating and hot water.

 How does an ASHP work?

An ASHP works by absorbing heat from the outside air and increasing its temperature through the indoor unit before it’s released into the home. ASHPs are affordable to operate as they use minimal electricity.

 How do I choose the right ASHP for my home?

You need to consider different factors like the size of your home, your heating needs, your existing heating system, insulation, and your budget when choosing the right ASHP for your home. You may also need to consult with a professional installer.

 How much does it cost to install an ASHP?

The cost of installing an ASHP can vary depending on various factors like the model, size of your house, and any required modifications to your existing heating system. However, ASHP installations are eligible for government incentives such as the renewable heat incentive program.

 Can an ASHP replace my gas or oil heating system?

Yes, an ASHP can replace your gas or oil heating system. ASHP devices can be retrofitted to your existing heating system or integrated into new builds. ASHPs provide reliable, affordable, and efficient heating for diverse heating needs.”


Believe it or not, 90% of air source heat pump problems are due to improper installation. According to the US Department of Energy, “30% efficiency is lost with incorrect sizing, poor climate conditions analysis, and inadequate duct installation.”

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