Meet the ZEB.
Zero Emission Boiler.

The future of heating is clean, green and affordable.
Our award-winning Zero Emission Boiler (ZEB
®) is revolutionising the way we heat our homes.

Low Cost

Low Carbon

Smart & Flexible

Easy to install

17% of the UK’s emissions come from heating our homes.

Most of us heat our homes using a gas or oil boiler.

Unfortunately burning gas or oil to provide heating creates huge amounts of local pollution and carbon emissions.

Home heating is likely to be one of your single biggest sources of carbon. Upgrading to a ZEB means no more burning oil or gas to heat your home, so no more flue.

The ZEB is a plug-n-play, low carbon replacement for your current boiler.

The ZEB works like a battery for heat: charging up using low carbon electricity and then delivering heat to your home when needed.

The ZEB is easy and quick to install and works with your existing heating system. Ditching fossil fuels, without a fuss.

Our smart charging algorithm calculates when and how much to charge based on your energy tariff, keeping running costs low.

How does the ZEB work?

The ZEB is powered by electricity and works like a battery to store energy as heat until it is needed. Electric heating elements charge up a “core” inside the ZEB - storing a lot of energy in a small footprint.

Our patented heat-management technology then cleverly releases the heat to your radiators, underfloor heating and water tank when your thermostat calls for it.

Intelligent Heating

Our Smart Charging algorithm charges the ZEB at the cheapest and greenest times of the day, ready for when you need it.

This factors in local weather, how much heat your home uses, the carbon intensity of electricity and the pricing of your energy tariff. The ZEB works best with “time of use” or “flexible” tariffs where the price you pay for electricity changes throughout the day.

The ZEB can also charge using electricity generated by solar PV or other generation sources.*

*Currently in BETA testing

This ZEB has a cheap off-peak tariff period from 00:30 to 04:30 and charges to capture the lowest cost & lowest carbon energy at this time. It doesn’t charge again for the rest of the day: a cheap, clean, emission-free day’s heating.

How does Smart Charging work?

The ZEB uses machine learning to calculate when and how much to charge throughout the day: taking the hassle out of low carbon heating.

First, the ZEB learns how much heat your home needs and uses local weather forecasts to make a prediction for the day ahead.

Next, the ZEB works out how much to charge and when to do it based on your tariff pricing, the grid carbon intensity and predicted heat demand.

As the day unfolds, the ZEB constantly checks its level of charge and re-calculates to make adjustments throughout the day if needed.

You are always in control - the tepeo app lets you adjust or set how the ZEB should charge and you can always boost the ZEB manually.

Customer Stories

Our Zero Emission Boilers have been keeping homes and showers warm since 2020. Find out direct from our customers how their ZEB works in the real world.

We know heating and hot water is important.

We know heating and hot water is important - that's why your ZEB comes with up to a 10-year guarantee.

Like with all boilers and heat pumps, some maintenance is required to keep your ZEB working at its best. As a minimum, you can arrange an annual ZEB Health Check for £149 / year.

Alternatively, for £10 / month, our tepeo Care plan can offer peace of mind, helping to maintain your 10-year guarantee by providing the routine checks your ZEB needs.

Terms and conditions apply.



Always in control
with the tepeo App

Download our App on your smart phone and check in on your ZEB - whether you’re in Teddington or Toulouse. The App lets you monitor the performance of your ZEB, adjust key settings, boost charge and much more.

Is a ZEB right for my home?

The ZEB is a great low carbon heating solution, but it isn’t right for every home. There are a few key criteria to help check if its the right option for you:

  • Your home uses between 3,000-12,000kWh of energy per year for heating & hot water (roughly 1,100L of oil). You can find an estimate on your energy bill.

  • You have a ‘wet’ heating system (radiators or underfloor heating) and a hot water tank - or are happy to get one!

  • You have space for the ZEB on an accessible, solid and level surface - typically on the ground floor.

    We don’t (yet!) cover the whole of the UK, but are expanding fast. If you aren’t yet in our area of coverage, we’ll be in touch as soon as we reach you.

How do I order a ZEB?

  • Check if the ZEB is right for you

    Complete our ZEB Home Check to find out if the ZEB is a good fit for your home.

  • We'll give you a call

    If the ZEB is a good fit, we will arrange a phone survey to go through a few more details and book your home survey.

  • Complete a home survey

    During the home survey, we’ll work out the details of your installation and answer any questions you might have.

  • Getting a ZEB to you

    We’ll then arrange delivery of your ZEB and help you find a tepeoPRO to install it.

  • Get a ZEB

    We’ll check some details to see if one of our Zero Emission Boilers (ZEB) is a good fit for your home.

  • The App

    Check out the tepeo App - full control of your ZEB, at the touch of button.

  • FAQs

    How does it work? How much does it cost? Find the answer to your most common questions.

  • Have a question?

    If you have a question about moving from your fossil fuel boiler to a ZEB please get in touch.