A realistic example of what to consider when installing a heat pump in a traditionally built home in Devon or Cornwall.
Property Type
Older 3-bed semi-detached (pre-1950s)
System
Air Source Heat Pump + Upgraded Radiators
Previous Heating
Gas Boiler + Radiators
Key Consideration
Insulation level strongly affects performance
Many homeowners in older properties across Devon and Cornwall are exploring heat pumps as they look to reduce carbon emissions and move away from gas or oil.
These homes often have moderate insulation, a mix of double and single glazing, and were originally designed for higher-temperature heating systems.
We usually recommend assessing heat loss first. A correctly sized heat pump can work well, but improving insulation (especially loft insulation and draught-proofing) almost always helps the system perform better and keeps running costs lower.
Many homes feel warmer and more consistent once the system is correctly sized and the property has reasonable insulation levels.
Running costs are often comparable to gas in moderately insulated homes. Additional insulation upgrades usually improve efficiency further.
"The house feels more comfortable overall. We’re pleased with the change, but we’re now looking at improving insulation to get even better performance from the system."
Heat pumps can work well in older properties, but results are strongly influenced by the level of insulation. In many cases the system delivers improved comfort, and homeowners often go on to make further energy efficiency upgrades to maximise performance and reduce running costs.
Use our calculator to get a realistic estimate based on your property.