Heat Pump Retrofit vs Full System Upgrade: Which Should You Choose?

Keep your radiators or start again? How a heat pump retrofit compares with a full system upgrade, when each makes sense, and where Heat Geek’s ZeroDisrupt fits.
Viessmann Vitocal 150-A vs 250-A: Which Should You Choose?

Viessmann’s popular Vitocal 150-A against the premium 250-A: outputs, flow temperature, built-in cylinder versions, quoted efficiency and UK availability compared.
Vaillant aroTHERM plus vs Worcester Bosch Compress 5800i AW: Which Should You Choose?

Both are quiet R290 monobloc heat pumps reaching 75°C. We compare outputs, noise, energy ratings and installation to help you pick the right one.
Vaillant aroTHERM plus vs Viessmann Vitocal 250-A: Which Should You Choose?

Two premium R290 monobloc heat pumps compared on flow temperature, outputs, noise, hot water options and UK availability, so you can choose with confidence.
Heat Pump vs Gas Boiler: Which Should You Choose?

Heat pump or new gas boiler? We compare efficiency, running costs, suitability, installation disruption, lifespan and the Boiler Upgrade Scheme grant.
Monobloc vs Split Heat Pumps: Which Should You Choose?

Monobloc or split? How the two air-to-water designs differ on refrigerant, installation, flow temperature and siting, with Vaillant and Worcester Bosch examples.
Air Source vs Ground Source Heat Pumps: Which Should You Choose?

Air source or ground source? We compare installation cost, space, efficiency, disruption and the £7,500 grant, and explain why most homes choose air source.