Myth-busting Starts Here
Air source heat pumps have moved from niche to mainstream, yet several outdated ideas still deter homeowners. Understanding what the technology can—and cannot—do helps you decide whether it is right for your property. Below we address the most frequent misconceptions we hear during surveys across Kent, Surrey and South-East London.
Misconception 1: ‘They Don’t Work in Cold Weather’
Modern pumps extract heat even when outdoor temperatures dip below –10°C. A variable-speed compressor keeps efficiency high, and intelligent defrost cycles prevent ice build-up on the coil. Well-insulated homes may see seasonal performance factors above 3.0, meaning three units of heat for every unit of electricity consumed.
Misconception 2: ‘Running Costs Are Higher Than Gas’
Electricity remains more expensive per kWh than mains gas, yet a heat pump’s efficiency often offsets the price difference. Clients switching from oil, LPG or electric storage heaters typically cut annual bills by 30 to 50%. Pairing the pump with an agile tariff further lowers running costs by exploiting off-peak rates.
Misconception 3: ‘Radiators Must Be Replaced with Underfloor Heating’
While larger heat-emitter surfaces improve efficiency, many homes keep existing radiators. The key is accurate heat-loss calculation; oversizing emitters by a small margin provides comfortable room temperatures at the lower flow rates heat pumps favour.
Misconception 4: ‘Noise Levels Disturb Neighbours’
A-rated units operate around 40 dB at one metre—quieter than an average dishwasher. Correct placement, anti-vibration mounts and acoustic fencing ensure compliance with permitted development guidelines.
Misconception 5: ‘Maintenance Is Complicated’
Annual servicing involves cleaning filters, checking refrigerant pressure and updating firmware—tasks comparable in cost and time to a boiler service, but without flue-gas analysis or combustion tuning.
Quick Reference—Facts at a Glance
- Heat pumps operate efficiently down to –10°C with seasonal SCOPs above 3.0.
- Typical annual savings: 30 to 50% versus oil or LPG systems.
- Quieter than 45 dB at boundary; planning compliant when sited properly.
Considering an Air Source Heat Pump?
Our MCS-certified engineers provide clear performance projections and impartial advice, ensuring your installation meets technical and financial expectations. Contact us online or call us on 0208 936 7639 for a free remote assessment.
