A common myth is that heat pumps stop working in cold weather. In reality, modern air source heat pumps are designed specifically for colder climates and operate efficiently even when temperatures drop below freezing.
Countries with harsher counties to that of the UK - like Norway, Sweden, and Finland have been using them at scale for about 40–50 years, and experimenting even earlier. Today’s systems include advanced compressors, defrost cycles, and smart controls to maintain performance in low temperatures.
The key to winter performance is correct system design. A properly sized heat pump, combined with accurate heat-loss calculations and suitable emitters (radiators or underfloor heating), ensures consistent warmth throughout the year.
Rather than short bursts of high heat like a boiler, heat pumps provide steady, comfortable warmth over longer periods. Many homeowners find this results in a more stable and pleasant indoor temperature.
Most modern air-source heat pumps can provide cool air in addition to heating. They function as a two-in-one system by reversing the refrigeration cycle, extracting heat from inside the home, and releasing it outside. Air-to-air systems are particularly effective at cooling, while some air-to-water systems can also provide this functionality.
Our team at Thermal Earth will calculate and design the right system for your home, ensuring comfortable heat all year round!