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Heat Battery Boiler

Core Capabilities of the ZEB Heat Battery Boiler

40kWh
Usable storage
4.5 hours
Charge time
15 kWh
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

The ZEB Cost & Carbon Calculator

Use our calculator to check how the ZEB compares to your existing boiler in terms of running costs and carbon emissions.

Carbon Savings

Select your fuel type and annual consumption to view your carbon saving breakdown

Cost Comparison

Select your fuel type and annual consumption to view your cost breakdown

ZEB Boiler
Maintenance Lifetime Maintenance
Standing Charge Lifetime Maintenance
Annual Fuel Cost Lifetime Maintenance
Total Annual Cost Francisco Chang Mexico

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.

Smart Ecosystem Integration

Smart Tariffs

Smart Tariffs

The ZEB intelligently schedules its charging during the cheapest off-peak windows. It works seamlessly with dynamic time-of-use tariffs like Octopus Agile, Cosy Octopus, or Intelligent Octopus Flux to slash your running costs.

Solar PV Setup

Solar PV Ready

Turn your roof into a zero-cost heating engine. The ZEB can automatically soak up your excess solar generation, storing free, green energy as heat to keep your home warm when the sun goes down.

Family using tepeo App

App Control

Track your charging status, monitor core temperatures, and take full control of your heating schedule directly from your phone. The tepeo app puts the power of the ZEB right in your pocket.

tepeo installer - zeb

Zero Emissions. Zero Disruption.

Even the most dedicated smart-home enthusiasts draw the line at ripping up their floorboards. While upgrading to low-carbon heating often comes with a massive renovation headache, the ZEB is engineered to drop seamlessly into your life, and your existing heating system.

Here is how the ZEB removes the friction of switching away from gas:

  • No Outdoor Unit (or Noisy Fans): Unlike an air source heat pump, the ZEB is installed entirely indoors. That means no bulky metal units cluttering up your garden, no humming fans outside your window, and absolutely no planning permission required. It fits neatly into a standard utility space or airing cupboard.

  • Keep Your Existing Radiators: Because the ZEB delivers high flow temperatures (up to 80°C) just like a traditional gas boiler, it plumbs directly into your current wet central heating setup. There is no need to tear up your floors to install underfloor heating or swap out your current radiators for oversized alternatives.

It is the ultimate plug-and-play upgrade: a smarter boiler that gives you total control over your carbon footprint, without turning your home into a building site.

Get started today

When you complete our short 60 second home check, you’ll find out if your home would be suitable for a heat battery boiler.

If it is, then you will be given the option to book in a call with our friendly team to talk through your specific requirements in more detail.

Don’t wait, get in touch today and see if you can secure your £2,500 early grant match.

Case Study: The Ultimate Smart Home Upgrade

How a Hampshire couple ditched gas without the disruption of a heat pump.

tepeo ZEB Installation 1

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tepeo ZEB Installation 3

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tepeo ZEB Installation 6

  • The Setup: A semi-detached home already equipped with Solar PV and a Tesla Powerwall.
  • The Problem: They wanted zero-emission heating, but a heat pump meant unwanted external disruption, and the boiler needed to go inside a perfectly quiet home-massage studio.
  • The Solution: The tepeo ZEB. It installed easily into an existing cupboard without any outdoor units.
  • The Result: It charges seamlessly from their Tesla Powerwall and runs so silently that massage clients are never disturbed.

“It’s everything we liked about central heating – without the gas.”

— Phil, tepeo Customer