Working together with heat pumps.
Heat pumps seem to be prominent in the future of heating. However, there are a few concerns about having them as a dedicated source of heat for your home.
Heat pumps will work in cold weather, even down to -15 C degrees, but with current environmental conditions which cause sudden drops in temperatures (like just before Christmas) – then the heat pumps don’t always cope and have to compensate by drawing on more electricity.
The reason for this is that flow and return water temperatures on a heat pump run between 45 – 40 degrees whereas a gas boiler typically runs 70 flow and 60 return. This creates the efficiency as it requires less energy to reach optimal temperatures, however, on colder days will take longer to adapt to lower temperatures – therefore ironically being less efficient on cold days as it needs more energy and therefore cost.
For instant heat, nothing really can better a sustainable Ecodesign, log burning stove.
Installation costs for stoves vary, depending on your property type, but they are considerably less than a heat pump.
For heat pumps, grants are available, but even with those, you are looking at between £8000 – £10000. Long term there will be a reduction in energy costs, plus the cost of installation will invariably come down – but not any time soon.
When installing heat pumps, planning and research is needed, as well as planning permission (in Wales and Northern Ireland) and there will be significant disruption. Not everyone has space in their outdoor area as well.
In comparison to a gas boiler, the heat pump has a number of advantages including reduced maintenance and safety. They are also efficient, far more than a gas boiler and can also provide cooling as well as heating.
However, as a sole source of heat, it doesn’t deliver the amount of heat required on extremely cold days. Adding a secondary source, such as a log burning stove system, such as the Schiedel range of stoves in a self build, or major renovation means that even on the coldest days, there is less reliance on the energy network, considering the extreme costs incurred over the last few years.