The projected savings of a heat pump in comparison to a gas boiler could be
around 95% by 2050
unit to the water source within the home varies depending on the heat pump, but an eight metre heat pump head typically has a pipe run of around 15-20 metres.
WHAT FUNDING IS AVAILABLE FOR
technology of choice when it comes to replacing gas boilers in new homes. The focus on heat pumps as a low carbon heating solution is no coincidence. They offer huge carbon savings at around 65% versus a natural gas boiler and have the potential for further reductions as the grid continues to decarbonise over time. To put this into perspective, the projected savings of a heat pump in comparison to a gas boiler could be around 95% by 2050.
HOW DO HEAT PUMPS COMPLY WITH CHANGING BUILDING
REGULATIONS? From 2025, when the Future Homes Standard is introduced, an average home will be required to cut carbon by at least 75% compared to current standards. In addition, interim changes are due to come into force from this month, requiring a 31% carbon reduction. This makes perfect sense given that the installation of the technology is easier and less disruptive, while avoiding the need for costly retrofi ts at a later date. Research by the Climate Change Committee (the offi cial climate advisors to the Government) has also shown heat pumps to be cost comparable to gas boilers in new builds already.
WHAT KEY DESIGN POINTS NEED TO BE CONSIDERED?
Understanding the use and thermal dynamics of your property is key to designing and specifying a suitable
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www.sbhonline.co.uk may/june 2022
heating system. Some key design points to keep in mind include heat loss and hot water usage, external and internal pipe runs, central heating pipe sizing, placement of hot water cylinders, and consideration for sound and comfort.
WHAT ARE THE PIPEWORK
REQUIREMENTS? It is important to ensure that the outdoor unit fi ts within the setting of the property so that it is considered part of the external design, fi tted in close proximity to the property to minimise pipe runs, for example. The pipe length from the
HEAT PUMPS? Upfront fi nancial support towards the cost of a heat pump is available through the Government’s Boiler Upgrade Scheme. This has now been launched, and is open to any installation commissioned (with a MCS certifi cate issued from) 1 April. Grants of £5,000 are available for air source heat pumps or £6,000 for ground source heat pumps. It’s worth keeping in mind that self-build homes are eligible for the scheme, while other types of new build homes are not.
Phil Hurley is chair of the Heat Pump Association
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