A better boiler for a world without gas

Moving away from fossil fuels shouldn’t mean sacrificing your outdoor space or rewriting your entire home. The tepeo heat battery boiler gives you clean, low-carbon heating without the disruption.

No outdoor space?
Fits neatly indoors with absolutely no bulky external units required.

Worried about electricity costs?
It automatically stores energy when prices are lowest to keep your bills down.

Want to avoid a major overhaul?
Works directly with your existing radiators and pipework – no massive retrofits needed.

Get the

£2,500

tepeo grant
today

EXCELLENT

What brings you to tepeo today?

Making the switch to clean energy shouldn’t mean dealing with stress or disruption. Choose the statement below that best matches what you’re looking for, and let’s find the smartest way to keep you warm.

My boiler is broken

Be warm again - fast. The tepeo heat battery boiler can be installed quickly with no major disruption to your home. It's everything you expect from a traditional boiler, without the gas.

Complete home check and speak to the team

I want a heat pump alternative

We know that heat pumps don't work for every home. If you don't have the outdoor space or want to avoid a disruptive retrofit, our heat battery boiler is the simpler choice.

Learn more about heat pump vs heat battery boiler

I want to future-proof my home

Make the transition away from fossil fuels seamlessly. Our heat battery boiler charges like a battery when grid electricity is at its cheapest and greenest and integrates with solar panels and smart tariffs.

Learn more about our heat battery boiler

What is a Heat Battery boiler?

A heat battery boiler is an electric boiler that stores heat for later.

It works with radiators or underfloor heating, like a traditional boiler, but it does not burn gas, oil or LPG. Instead, it charges when electricity is cheaper and cleaner, then uses that stored heat when your home needs it.

Unlike a standard electric boiler, it does not rely only on electricity at the exact moment you need heat. And unlike a heat pump, it does not need an outdoor unit.

That makes it a practical option for homes moving away from fossil fuel heating, especially where a heat pump may not be the right fit.

Learn more

How our Heat Battery Works

A smarter way to heat your home with lower-carbon electricity.

Charges like a battery

The ZEB, tepeo’s heat battery boiler, uses off-peak electricity to heat its ceramic core, storing energy when it’s cheaper and more sustainable thanks to smart charging that automatically plans your charging around your tariff and the greenest times of day.

Stores energy, ready when you are

The core holds on to this heat, keeping it stored efficiently until your home needs it, just like a traditional boiler would — but without fossil fuels or major changes to your heating system.

Heat your home, your way

The ZEB delivers heat into your existing radiators or underfloor system when needed. You’re always in control using the tepeo app: set preferences, track usage, boost remotely, and integrate with systems like Home Assistant for smarter, connected comfort.

Could the tepeo heat battery boiler work for your home?

The ZEB is designed for suitable homes that want familiar central heating without gas, oil or LPG. It can be a great option where a heat pump may not be the right fit – for example, if you do not have suitable outdoor space or want to avoid a larger retrofit.

It typically works best in homes with:

radiators or underfloor heating
suitable indoor space
a smart meter or access to one
annual heat and hot water demand within range
a suitable time-of-use electricity tariff

Every home is different, so the best first step is our home check.

Check home suitability

A better boiler, built around real homes

With a 10-year guarantee and control via the tepeo app, the heat battery boiler combines rock-solid engineering with smart, flexible heating.

£2,500 early grant match

Eligible customers can get £2,500 off with tepeo’s early grant match, helping make installation more affordable.

Smart tariff charging

The ZEB is designed to charge using cheaper off-peak electricity, helping keep running costs closer to gas.

Lower-disruption install

Can be installed within 1-2 days using your existing heating system.

No emissions at home

The heat battery boiler does not burn fossil fuels in your home.

Check home suitability
›

What our customers say

See what our customers have to say about the ZEB and the installation process.

Really attentive customer service from Tepeo. Nothing is too much trouble. We had some questions before and after installation that were all answered very thoroughly. Now that we’re used to the ZEB, we have got it set up so that it best suits our needs. Oh, and our cat loves sleeping on it!

Claire Sainthouse

For us, the ZEB was much cheaper to install than a replacement oil boiler as the regulations have changed and we would have had to have a new flue or put the boiler outside. After a year, we think running costs are similar to oil. We had one breakdown but Tepeo sent a technician to replace a faulty part the next day. Weekday support is excellent. Delighted we went with a green solution. A heat pump was not suitable for our house. The ZEB is an excellent product and deserves to be much better known.

Eric Richards

“The ZEB is easily controlled by an app from your mobile phone, it includes lots of functions so you can program it to suit your needs and take advantage of any smart electricity tariffs you might have (…). The ZEB is a great alternative to a heat pump if like me it isn’t suited to your home.”

Keri Lloyd

“The ZEB was installed neatly and easily in our cupboard under the stairs. Through last winter we stayed warm and let the ZEB do its thing with choosing the cheapest and greenest times to charge overnight. Customer support from tepeo has been great and the app is very user friendly”

SJ Ren

“The ZEB works in our house, pretty much the same as our gas boiler. There’s not been any practical differences. And it’s all on our existing controls – we didn’t even have to change the settings! We didn’t have to change any of the radiators and it only took a day in the end to install.”

Jamie and Lizzy

“The ZEB is a great product which we are very pleased to have replaced our gas boiler. Our house is as warm as it ever was with the old boiler and we have much more control over its operation. tepeo have been excellent in all aspects during and since our installation.”

Peter Gilfeather

Engineered for real homes

Founded in 2018 by engineer Johan du Plessis, tepeo was built on a simple belief: the UK’s transition to clean heat needs more choice.

Heat pumps are a great solution for many homes, but they are not the right fit for every property. Space, cost and installation complexity can all get in the way.

Chris and Johan set out to solve that gap with strong engineering and a practical mindset – creating a heat battery boiler that gives suitable homes familiar central heating, powered by smart electricity.

tepeo is B Corp certified, recognised as an Ethical Consumer Best Buy, and proud to be helping lead the way towards a cleaner, more flexible heating future.

Built in Britain. Driven by Purpose.

The ZEB is more than a low-carbon innovation; it’s a product of British engineering excellence, designed and manufactured right here in the UK.

As a B Corp certified company and an Ethical Consumer ‘Best Buy’, tepeo is committed to the highest standards of transparency and environmental impact.

By combining local manufacturing with rigorous ethical values, we ensure that every ZEB delivered is built with integrity, supporting a fairer and faster transition to a world without gas.

The latest tepeo news

Latest updates, advice and insights from tepeo – covering our heat battery boiler, low-carbon home heating, industry news and practical guidance for homeowners.

05.01.2026

tepeo Publishes First B Corp Report for 2025

Here at tepeo we are proudly B Corp certified, highlighting our commitment to environmental responsibility, ethical practices, and sustainable energy solutions. Discover how we… Read more

19.12.2025

UK Government expands Boiler Upgrade Scheme to include heat batteries

If you’re eligible, you can get £2,500 off the cost of installing a heat battery such as the ZEB, to work with your central… Read more

13.11.2025

tepeo signs joint letter urging the Chancellor to cut electricity costs

Some of Britain’s largest energy companies, consumer groups and environmentalists have urged Rachel Reeves to prioritise bringing down electricity bills in her upcoming Budget.

Visit Newsroom

Installed with care. Supported by tepeo

That’s why we put so much focus on the people, training and support behind every ZEB installation.

We work closely with trusted installer partners who understand our product and take pride in fitting it properly. To support them, we offer online and in-person training sessions, instant technical support, and access to our tepeoPRO portal, where installers can find additional resources, guidance and product information whenever they need it.

Our team is there before, during and after installation, helping make the process as smooth and reassuring as possible for customers.

From the way the ZEB is built to the way it is installed, we care about the details.

Because good installation matters. It helps your heating system perform as intended, supports comfort and efficiency, and gives you confidence that your home is in safe hands.