If you’re planning on installing a new heating system to your existing or newbuild property, you may be asking yourself about which heating system will offer the best value and performance for your home.
The upcoming changes to Part L, due to be implemented in 2022, are an interim step on the way to 2025. The ultimate aim is that the average new home produces at least 75% fewer CO2 emissions than one built to current energy efficiency requirements. This first set of changes will mandate a 31% reduction in CO2 emissions from new dwellings, compared to current standards. This means that all new heating systems will have to be designed with a maximum flow temperature of 55°C or lower. In addition, there will be a requirement for self-regulating, zoned, control devices. While there is flexibility on how to meet the targets, and there are a variety of renewable energy sources available, the government expects heat pumps to become the primary heating technology for new homes.
There are considerable differences between a heat pump and gas boiler, and we can help you make a more informed decision about which is best suited to you and your property.
In 2025 gas and oil boilers will be banned from installation in new build houses which means heat pumps will be the set standard.
When it comes to your existing property, it’s likely you have a gas or oil boiler already in place and it’s just in need of an update. It would be cheaper and easier to simply switch the boiler for a new one of the same kind. However, if you’re planning a whole house upgrade, you may want to also consider a different heating system that can offer better efficiencies, requires less maintenance, is more environmentally friendly and has a longer lifespan.
Over the years, the price of installing a gas boiler has become more competitive and simplified. You can get a new gas boiler installed in a 3-4 bedroom house, with a flue, for around £3,000 (depending on make and model). But, as we all know, the price of energy is creeping up at an alarming rate so is this really an affordable option in the long run?
Heat pumps on the other hand, have more sophisticated levels of engineering, with many elements constructed by hand. This means that the price is more premium and so we recommend budgeting around £8,500 to £15,000 for an air source heat pump and £18,000+ for a ground source (incl' installation).
Heat pump running costs are operated by electricity, for every 1kWh of heat they produce around 25% comes from electricity and the remaining 75% comes from the air or ground making them highly efficient and economical.
Most heat pumps are even compatible with 'time of use' tariffs which offer access to the wholesale price of electricity as it changes every half hour. This type of heat pump will automatically operate at the lowest cost possible whilst also factoring in weather compensation in order to consistently deliver your preferred temperatures and heating schedules.
The good news is, to make the pricing of heat pumps more accessible, there will be funding schemes made available.
Gas boilers are relatively simple and straightforward to install. There are many qualified and accredited gas and heating engineers around to fit them. You can usually get a new one fitted within 1 month of making the initial enquiry and it may take 1-2 days to complete the installation.
According to a recent survey, there are currently less then 1500 qualified heat pump engineers in the UK but this number is slowly growing.
Air source heat pumps are relatively quick and simple to install and take roughly the same amount of time as a boiler (1-2 days subject to any necessary system upgrades) . Ground source heat pumps take considerably longer to install, we recommend allowing around 2 to 4 weeks. This is due to the amount of ground works required.
A new gas boiler will have an efficiency of around 90%, producing 1kWh for every kW of electricity used.
Heat pumps on the otherhand are the most efficient type of heating system available. An air source heat pump can achieve efficiencies of around 300% (3kWh of usable heat for every 1kW of electricity) and a ground source heat pump can achieve 400% (4kWh of heat for every 1kW of electricity). This kind of efficiency will help to reduce monthly household running costs.
Gas boilers have an annual service costs of approximately £80-£120.
Heat Pumps require annual maintenance to ensure ongoing efficiency . To service an air source heat pump (up to 22kW) will cost approximately £150 and to service a ground source heat pump (up to 22kW) will cost approx £190.
Gas boilers only have an average lifespan of around 10 - 15 years against the heat pump which last around 20-25 years and the pipes for a ground collector can last over 100 years! So, if you ever did need to replace a ground source heat pump, it’s very unlikely that you’d need to redo the ground work too, which significantly reduces the cost.
Watch now to see how a renewable heat pump works.
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