Like all good myths, there’s always a kernel of truth. That truth usually arises early on in a particular product’s capabilities. Here’s one we are all aware of: electric cars have limited range. This was true in the early days of electric vehicle technology when battery life was significantly limited.
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However, with advancements in electric vehicle technology, it is not uncommon for entry level EVs to reach 300+ miles from a single charge. Tesla Model 3, Model Y, Hyundai Ionic 5, and many others boast ranges over 300 miles per charge, and EV charging networks are only making it easier to “fuel up” when on a long drive.
The same is true for heat pumps. The technology has been around in the USA since the 1940s but did not receive much attention until the energy crisis in the 1970s. Since then, heat pumps have kind of stumbled along in the US, not capturing that much market share even in milder climates.
That started to change around 10 years ago and has only accelerated since then, partly because the technology has improved significantly.
So why didn’t heat pumps work in cold climates in the first place?
There are several reasons: an inefficient defrost cycle, poor refrigeration cycling, and single-speed (or fixed-speed) compressors which cycle on and off as needed to maintain the target temperature.
All of these prevented heat pumps from performing well in lower temperatures. This all might sound complicated, but hang with me, it’s important to have this context to fully dispel the ‘heat pump don’t work in cold climates’ myth.
As the world’s climate patterns continue to change, so do our needs for indoor temperature control. Air conditioning has become an essential part of daily life for many people. However, it is now clear that traditional air conditioning units are not the most efficient or environmentally friendly option available, leading many distributors to consider a new trend: heat pumps.
Heat pumps work by using a small amount of energy to transfer heat from one space to another, making them an energy-efficient alternative to traditional air conditioning. As more distributors consider getting into the heat pump business, it’s worth diving into the benefits, challenges, and potential opportunities for this new trend.
There are many pros and cons to domestic air source heat pumps, and it’s important to be aware of them and avoid the downsides if possible. A summary of the air source heat pump pros and cons can be seen below.
Advantages of air source heat pumps
There are numerous benefits to using heat pumps, but here are the most important advantages of purchasing an air source heat pump are the following:
Low Carbon Footprint: ASHPs are a low carbon emissions heating option, as they use the outside air to heat or cool homes at a highly efficient rate. For every 3-4 units of energy produced, only 1 unit of electricity is used.
Money Saving: Switching to air source heat pumps can reduce your annual fuel bill by as much as £780, with larger savings for those switching from electric, coal, or LPG systems.
Boiler Upgrade Scheme: The £5,000 voucher from the Boiler Upgrade Scheme is available for the installation of air source heat pumps, ground source heat pumps, or biomass boilers. The scheme aims to encourage the adoption of low carbon heating technologies and runs until April 2024.
Heating and Cooling: Depending on the model, ASHPs can be used for both heating in the winter and cooling in the summer.
Space and Hot Water Heating: An ASHP can also heat water if the flow temperature is around 55°C. If it’s only for space heating, the flow temperature will be 35°C.
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High SCOP: Air source heat pumps have a high seasonal coefficient of performance (SCOP), making them efficient in both winter and summer, with a typical COP of 3.2 when the outside temperature is above 7°C.
Easy Installation: Air source heat pumps can be installed in as little as 2 days, without the need for digging like ground source heat pumps. They are suitable for both retrofits and new builds and can be cost-effective when combined with other building work.
Low Maintenance: Air source heat pumps require little maintenance. It should have annual servicing by a qualified heating engineer. While the occasional cleaning of filters and checking for leaks and refrigerant levels can be done by the homeowner.
Long Lifespan: Air source heat pumps have a long lifespan, with proper maintenance, they can operate for up to 20 years and most have 5-year warranties. Some models are even capable of working efficiently for close to 25 years.
No Fuel Storage: No fuel storage is needed with ASHPs, because the fuel used is the outside air. That means no additional fees for fuel deliveries like with biomass or oil-fired boilers.
Disadvantages of air source heat pumps
While air source heat pumps are known for their versatility and affordability, there are some disadvantages you should be aware of. These are the main air source heat pump disadvantages:
Lower heat supply compared to boilers: Air source heat pumps have a lower heat supply compared to oil and natural gas boilers. So larger heat-emitting surfaces (like larger radiators) might be required for the same amount of space heating.
Extra spending to install underfloor heating: Air source heat pumps are commonly used with underfloor heating to make the most of the system, which can lead to higher installation costs if you do not already have an underfloor heating system in place.
Need for a well-insulated home: An ASHP requires a well-insulated home to work effectively, similar to any other heating system.
Lower efficiency below 0°C: Air source heat pumps lose efficiency below 0°C because they rely on outside air, and the overall heat output decreases as the temperature drops.
Lower savings compared to cheap mains gas: The difference between the cost of mains gas and electricity (for powering an air source heat pump) might not be significant if your mains gas is cheap. However, the future of the UK is focusing on increasing heat pump installations significantly and you can expect to have more low-carbon incentives to make the switch.
Noisy operation: Air source heat pumps can be somewhat noisy when they are running, comparable to a regular air conditioner or light to heavy rain. But advancements are being made to reduce the noise levels.
Many of the downsides above can be prevented by having professional installers plan and install the air source heat pump system. At SMAD, we are committed to providing exceptional service to our customers, no matter where they are located. In order to better serve our distributors and customers worldwide, we have recently invested in building overseas warehouses and hiring service staff in key locations. This means that our customers can enjoy faster delivery times, more efficient installations, and access to high-quality after-sale service directly from local experts. Whether you are a distributor looking to expand your business overseas or a customer in need of reliable installation and service, our team is ready and able to support you every step of the way.
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