If you are looking for a gas or oil boiler replacement, you don’t have to choose between a polluting fossil fuel system or a highly disruptive heat pump installation. There is a third option: the tepeo heat battery boiler.
Use our calculator to check how the ZEB compares to your existing boiler in terms of running costs and carbon emissions.
Select your fuel type and annual consumption to view your carbon saving breakdown
The calculator and the output data provided do not constitute advice, including on tariff or energy supplier selection, and are for illustrative purposes only.
The output data is based on information you provided with approximation and several assumptions for calculation purposes, which can be found in the tooltips. tepeo does not take responsibility if your ZEB’s running costs do not match this prediction.
Cuts your home heating emissions immediately, without burning fossil fuels at home.
Uses smart, off-peak energy tariffs to keep running costs dramatically lower than standard direct electric heating.
Easy to install, use, and maintain. Works seamlessly with your existing radiators in just 1-2 days.
Complete our short home check to see if your home is suitable for a tepeo heat battery boiler. If your home is suitable, you’ll be able to book in a call with our friendly team to discuss your requirements further and start your switch!
The government’s Boiler Upgrade Scheme (BUS) grant of £2,500 will be available to eligible ZEB customers starting in Winter 2026. But we don’t think you should have to wait to get warm sustainably.
To help make the switch affordable right now, we are offering a tepeo early grant match of £2,500 per ZEB to eligible homes. No complex admin, no fuss—just straightforward support to help you upgrade your heating today.
Your ZEB keeps running costs low and shrinks your carbon footprint by charging up when electricity is at its cheapest and greenest. Want to know exactly how it works with the UK energy grid?