I want to buy
If you’re on oil or LPG, our Zero-Carbon Warmstone Heat Battery is going to save you thousands of pounds in heating bills – as well as significantly reduce your family’s carbon footprint. Our solution is cheaper and easier to install than air source heat pumps with no disruption to your home.
We have a limited supply. Sign up today
Is Warmstone for me?
cheaper and easier to install than air source heat pumps
Worked Example: 153 m2 detached home using 25,236 kWh per annum for heating and hot water. The home currently uses oil for heating and generates 7.75 tonnes CO2 per annum. A comparison of Warmstone annuals costs versus an air source heat pump plus retrofit.
Source Gemserv Analysis https://gemserv.com
*Installed cost subject to T&Cs
WarmstoneTM is our patented solid storage material that is made from a combination of recycled and natural materials.
We use cheap nighttime electricity to heat the solid core of the Caldera. We then use the stored heat to provide a supply of hot water and heating to your home during the day when you need it.
If you live in a house that uses heating oil or LPG, has solid walls (built pre-1930) and normal radiators, then you will almost certainly be better off with a heat battery.