How Do Heat Pumps Work?

Welcome to our latest blog post where we demystify the workings of heat pumps – the future of home heating in the UK. Over the last decade, heat pumps have been quietly revolutionising the way we heat our homes, providing an energy-efficient alternative to traditional heating systems.

Air to air heat pump for cooling or heating the home. Outdoor unit powered by renewable energy.

So, what exactly is a heat pump, and how does it work?

Heat pumps are a form of renewable energy technology that extracts heat from the environment (either the air or the ground) and ‘pumps’ it into your home. They work on a similar principle as your refrigerator, but in reverse. Instead of removing heat from inside and dispersing it into the room, a heat pump absorbs heat from outside and releases it inside your home.

The two most common types are air source heat pumps (ASHPs) and ground source heat pumps (GSHPs). ASHPs absorb heat from the outside air, while GSHPs use pipes buried in the garden to extract heat from the ground.

Costs and savings can vary based on several factors such as the size of your home and the efficiency of your current heating system. The Energy Saving Trust estimates that an air source heat pump costs between £6,000 and £8,000, while a ground source heat pump can set you back between £10,000 and £18,000. However, you can potentially recoup a significant portion of this cost through reduced energy bills and government incentives such as the Renewable Heat Incentive (RHI).

Heat pump systems can save between £375 and £475 per year if replacing an old electric heating system. Savings could be higher if the system is optimised for energy efficiency with good insulation and underfloor heating.

Now, let’s talk about installation and set-up.

The process is relatively straightforward for a qualified installer. ASHPs typically require an outdoor unit and an indoor heat exchanger, while GSHPs need a network of pipes buried in your garden. Your existing radiators may be suitable, but underfloor heating or larger radiators might be required for the system to be most effective due to the lower water temperatures.

Now, to address some frequently asked questions:

  1. Is my home suitable for a heat pump? Most homes will be suitable for a heat pump. However, those with good insulation will benefit the most as heat pumps work best in well-insulated properties.
  2. Do heat pumps work in the winter? Yes, they do. ASHPs can extract heat even when the outside temperature is as low as -15°C. GSHPs work efficiently all year round as the ground temperature is relatively constant.
  3. What maintenance is required? Heat pumps are very reliable and need little maintenance. An annual check by you and a more detailed check by a professional every 3-5 years should be sufficient.
  4. Can a heat pump provide hot water? Yes, heat pumps can provide hot water as well as heating.

Heat pumps represent a significant investment, but they can also offer substantial savings and an environmentally friendly way to heat your home. As the UK moves towards a net-zero future, heat pumps are set to play a pivotal role.

So, as we look towards more sustainable ways of living, heat pumps might just be the solution we need. They offer an efficient, eco-friendly method of heating our homes, whilst also providing potential financial savings. Although the initial investment may seem substantial, the long-term benefits are undeniable, making heat pumps a worthy consideration for any homeowner.

Remember, the transition to greener energy is not just about global impact; it’s also about creating more comfortable, sustainable homes for ourselves and future generations. With heat pumps, we can do just that.

Please remember that while we aim to provide accurate information, it’s always best to consult with a professional before making a decision about your home’s heating system. For further information, visit the Energy Saving Trust website and take a look at their detailed guides on ASHPs and GSHPs.