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tepeo heat battery boiler

With interest in heat battery technology growing, summer is a great time to explore whether the ZEB could work for your home.

Plan your switch now before the colder months return and save £2,500 today with our Early Grant Match.

Now could be the perfect time to moving away from fossil fuels.

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Begin by checking to see if your home is suitable for a ZEB

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How does a heat battery boiler work?

Our heat battery boiler charges using off-peak electricity, stores energy as heat in a high-density ceramic core, then releases that heat into your home when you need it.

So you get everything you like about central heating – powered by electricity.

Charge. Heat. Repeat.

How the ZEB Smart Charging works

Smart Charging learns your habits, what the weather is doing and what your energy tariff looks like – then works out when, and how much, to charge to be cost efficient.

So instead of charging unnecessarily or drawing electricity at the wrong time, the ZEB can plan ahead and store heat when it makes sense. You can leave it to do its thing in the background, knowing it is constantly adjusting to your home’s needs and helping you make the most of your tariff.

zeb heat battery boiler tepeo

Is a heat battery boiler right for your home?

Our heat battery boiler is designed for homes that want familiar central heating without gas, oil or LPG. It can be a great heat pump alternative if you do not have outdoor space, want to avoid a major retrofit, or need a lower-disruption installation. The ZEB typically works best in homes with:

  • Up to 12,000kWh annual heating and hot water use
  • 60kWh or less daily heat demand
  • Whole-home heat loss of 5kW or less
  • Radiators or underfloor heating
  • A hot water tank, or space for one
  • Suitable indoor space on a solid, level surface
  • Flats, bungalows, semi-detached or detached 2–4 bedroom homes

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Upgrading from a combi boiler?

The tepeo ZEB is a heat battery boiler designed to seamlessly replace the central heating side of your old system. If you currently have a combi boiler (which handles both your radiators and your hot water in one box), you will simply need to add a separate hot water solution alongside your ZEB.

This is a very standard part of moving to zero-emission heating, and there are several fantastic, low-carbon options to fit your space and budget:

Traditional Hot Water Cylinders

The classic, cost-effective choice.

Smart Cylinders

Highly efficient, heating only the water you actually need.

Compact Heat Batteries (PCM)

Ultra-small thermal stores that provide hot water on demand, perfect for tight spaces.

Don’t worry, your tepeoPRO installer will assess your home and recommend the perfect fit.


Read our full guide›

What our customers have to say about tepeo and the ZEB

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Heat Battery Boiler

Core Capabilities of the ZEB Heat Battery Boiler

40kWh
Usable storage
4.5 hours
Charge time
15 kW
Heat output
35°C – 80°C
Temp range
Intelligent
Tariff optimisation
59 dB
Whisper quiet
Responsive
Supports green grid
Compact
598 x 660 x 980mm
ZEB Boiler Dimensions - white measurements
tepeo app

Control your heating from anywhere

Take control of your heat battery boiler from anywhere with the tepeo app. The app gives you a clear view of what your ZEB is doing, including its live status, charge history, local grid carbon intensity, and the carbon emissions from your ZEB’s charging over time.

You can also adjust your heating on the go: set Away Mode, manage Smart Charging, or Boost your ZEB on a cold day when you need extra heat.

Smart, simple and reassuring, so you always know what your heat battery boiler is doing and can stay in control of your home heating.

Find out more about the app

Get £2,500 off today with the tepeo early grant match

The Government has announced plans to include heat batteries in the Boiler Upgrade Scheme in winter 2026. To help customers move sooner, tepeo is currently offering an early £2,500 grant match on our heat battery boiler for suitable homes.

Get in touch with our team today to find out more.

Contact us Find out more about the BUS scheme

Read our customer stories

Oil Boiler Case Study

Heat pump wasn’t right. The ZEB was

This family ditched their oil boiler for a ZEB to save hundreds every year and enjoy living sustainably with their solar panels as well.


Read full story ›

Hampshire Gas Boiler Replacement Case Study

Gas boiler replacement in Hampshire

How the tepeo heat battery boiler provided the perfect low-disruption, zero-emission heating solution for a peaceful semi-detached home and wellness space.


Read full story ›

Converted Apartment Case Study

Low carbon heating for a converted apartment

How a historic lace mill flat bypassed strict space limitations and heat pump restrictions, pairing a ZEB with a compact solution for gas-free heating.


Read full story ›

As seen on Everything Electric

family relaxed tepeo care plan

Simple maintenance for your ZEB

Your ZEB heat battery boiler comes with up to a 10-year guarantee as standard, and like any heating system, it needs regular checks to keep it working at its best.

To help, we offer two simple maintenance options. You can book an annual ZEB Health Check for £179 per year, which includes the checks needed to help maintain your guarantee, with any required ZEB parts included. Or you can choose the tepeo Care Plan for £12.75 per month, which includes your annual Health Check, remote monitoring through our cloud-based platform, and discounts on fixed-price repairs for other essential parts of your heating system.

It’s designed to give you peace of mind, keep things clear, and help your ZEB run smoothly for years to come.

Find out more about our Care Plan

Peace of mind at every corner

10 Year Guarantee Icon

10 year guarantee

Our heat battery boiler comes with a 10-year guarantee, giving you long-term confidence in your switch to clean electric heating.

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Seamless installation

We train and support our tepeoPRO installers to help ensure every ZEB installation is carried out with care, from home check to handover.

Care Plan Icon

Care Plan

Our Care Plan includes an annual ZEB health check, helping keep your heat battery boiler running as it should.

Ready to start your switch?

Ready to take the next step towards low-carbon home heating? Start by completing our simple home check. This quick assessment will confirm if your home is suitable for a heat battery boiler installation.

If your home is suitable, you’ll then be given the option to book a call with our friendly team – at a time and date that suits you – to chat through your needs, the installation process, and flexible financing options.

We’re excited to help you on your journey to a cleaner, more affordable heating solution.

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Insights

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

07.07.2026

Freddie van Mierlo MP visits Tetsworth home to see heat battery boiler in action

Henley and Thame MP Freddie van Mierlo has visited a constituent’s home in Tetsworth to see how a tepeo heat battery boiler is being… Read more

03.07.2026

Get £2,500 off a ZEB heat battery boiler today

The UK Government plans to include heat batteries in the Boiler Upgrade Scheme once the necessary standards and the scheme arrangements are in place…. Read more

29.06.2026

This summer feels different. So should the way we heat our homes.

The UK is experiencing a heatwave serious enough to close schools, disrupt transport and place additional pressure on hospitals and essential services. On 24… Read more
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