What is an air source heat pump and why do new homes use them?
Air source heat pumps are becoming more popular in new-build homes due to their environmental benefits. The government’s climate advisors have noted that half of the UKs homes will need to have a heat pump by 2040 to meet environmental targets, so it’s no wonder they’re rising in popularity. At Wain Homes, we’re already following suit to make new-build homes one step closer to running on renewable energy.
So what exactly are air source heat pumps and why are they becoming the preferred heating solution over traditional boilers? We’ll take you through everything in this blog, explaining how they work, the benefits for homeowners and why they’re now the preferred choice.
What is an air source heat pump?
What is an air source heat pump? Put simply, it’s an alternative way to heat your home that works by extracting heat from the outside air and using it to increase the temperature inside your property. Even when it feels cold outside, these remarkable systems can extract heat from the air around us.
- Air source heat pumps look similar to air conditioning units and are typically installed outside your home, with their size dependent on your property’s heating requirements. There are two main types to be aware of:
- Air-to-air heat pumps: These feed heat into your home through fans and are more of an alternative to electric heating, rather than a direct boiler replacement.
Air-to-water heat pumps (also known as hydronic heat pumps): These take heat from the outside air and feed it into your wet central heating system, such as radiators or underfloor heating. They can effectively replace traditional gas or oil boilers and are the most common type installed in new build homes.
How do air source heat pumps work?
How do air source heat pumps work? They operate on a similar principle to your refrigerator but in reverse. Instead of removing heat from an enclosed space, they extract heat from the air outside and transfer it into your home.
The process works as follows:
- The heat pump absorbs heat from the outside air into a liquid refrigerant at a low temperature.
- Using electricity, the pump compresses this liquid to increase its temperature.
- This heat is then transferred to your home’s heating system.
- In an air-to-water system, the heat warms water that circulates through your radiators or underfloor heating, with any excess stored in your hot water cylinder for showers and taps.
- In an air-to-air system, the heat is circulated as warm air through ducts and vents.
How do air source heat pumps work in cold weather? Impressively, they can extract heat from the air even when temperatures drop below freezing, with some models designed to function effectively down to -10°C or even -20°C. This makes them a reliable year-round heating solution, regardless of the British weather.
Air source heat pump benefits
There are numerous air source heat pump benefits for homeowners, particularly those buying a new build property:
Sustainability and environmental responsibility
One of the most significant air source heat pump benefits is their environmental credentials. They are fossil fuel-free at the point of use, meaning they emit no carbon dioxide directly. By using electricity, which is increasingly generated from renewable sources like solar and wind, they help reduce your carbon footprint and environmental impact. This aligns perfectly with the growing focus on sustainable living and the UK’s commitment to net-zero carbon emissions.
Energy Efficiency and cost savings
How efficient are air source heat pumps? Remarkably so. They can generate around 2.5 to 4 units of heat for each unit of electricity consumed, making them approximately 250-400% efficient. This extraordinary efficiency can lead to substantial savings on energy bills over time, especially when compared to more expensive heating systems like electric storage heaters, oil, or LPG.
Are air source heat pumps expensive to run?
While the initial installation cost can be higher than traditional systems, the running costs can be significantly lower due to their impressive efficiency. New homes equipped with heat pumps could potentially see savings of up to 50% on utility bills. Although electricity is currently more expensive than gas per unit, the higher efficiency of heat pumps often offsets this difference, and as energy prices evolve, these savings are expected to improve further.
Perfect fit for new construction
Another key reason why air source heat pump benefits are particularly relevant for new builds is their compatibility with modern construction standards. They work most efficiently in well-insulated homes, which are standard in contemporary new builds. When incorporated into the design from the outset, your heat pump provides a cost-effective and low-carbon heating source from day one.
Additionally, the space-saving aspect is significant, as the main unit is located outside your home. During the construction phase, it’s also straightforward to incorporate larger radiators or underfloor heating, which work optimally with heat pumps due to their lower water temperatures.
As a home-builder, we’ve chosen air source heat pumps
At Wain Homes, we’re forward-thinking homebuilders committed to creating smarter, more sustainable homes that benefit both our customers and the planet. Air source heat pumps align perfectly with this vision by providing:
- Environmentally friendly heating that reduces reliance on fossil fuels and lowers carbon emissions
- Energy-efficient homes that can lead to lower running costs for homeowners
- Future-ready technology that anticipates the shift towards low-carbon heating solutions
- Enhanced comfort through precise temperature control throughout your home
Benefits for homeowners in our new homes
When you purchase one of our new homes equipped with an air source heat pump, you’ll enjoy numerous advantages:
- Potentially lower energy bills thanks to highly efficient heating
- A reduced carbon footprint and contribution to a greener environment
- A warm and comfortable home with reliable, cutting-edge technology
- A space-saving solution that doesn’t compromise your interior design
- A future-proofed home that meets modern sustainability standards
Using your air source heat pump efficiently
To get the most from your air source heat pump and ensure are air source heat pumps expensive to run isn’t a concern for you, follow these tips:
- Understand that heat pumps are designed to provide low, constant heat rather than ‘on demand’ heating like a gas boiler
- Run your system for longer periods at a steady, lower temperature for optimal efficiency
- Maintain good insulation throughout your home for peak performance
- Schedule regular servicing by a trained professional to keep your system in top condition
FAQs about air source heat pumps
Are air source heat pumps noisy?
Are air source heat pumps noisy? Modern air source heat pumps are designed with noise reduction in mind. While they do make some sound (similar to a refrigerator), the latest models operate at around 40-60 decibels from a metre away – comparable to normal conversation or a dishwasher. In new builds, careful placement during design helps minimise any potential noise impact, ensuring our air source heat pumps are noisy isn’t a concern for homeowners.
How much electricity does an air source heat pump use?
How much electricity does an air source heat pump use? While they do require electricity to operate, their exceptional efficiency means they use significantly less energy than you might expect. Typically, for every 1kW of electricity used, an air source heat pump can generate 3-4kW of heat energy. This remarkable efficiency means that despite using electricity (which is typically more expensive than gas), the overall running costs can be lower than traditional heating systems.
Are air source heat pumps expensive to run?
Are air source heat pumps expensive to run compared to traditional heating systems? The answer depends on several factors, including your home’s insulation, how you use your heating, and current energy prices. However, in well-insulated new homes like ours, the superior efficiency of air source heat pumps typically translates to lower running costs over time. As the UK’s energy grid continues to incorporate more renewable sources, the economic benefits of heat pumps are likely to increase further.
Wain Homes – built for life
As a homebuilder committed to creating future-forward properties, we’re proud to incorporate this into our developments. Not only does it benefit our homeowners through improved energy efficiency and comfort, but it also contributes to a greener, more sustainable future.To learn more about the features and benefits of air source heat pumps in our new developments, please visit one of our show homes.
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