Zero Emission Boilers

The future of heating is clean, green and affordable

Tepeo Zero Emission Boilers

Revolutionising how we heat our homes

Free Survey and Quotation
Low Carbon
Smart Changing Algorithm
Easy To Install
ZEB Boiler
Tariff & Weather Forecast
Uses Off-Peak Power
Zero Emissions
Low Running Costs

The Award Winning Zero Emission Boiler

Discover the innovative Zero Emission Boiler (ZEB®) offered by Cotswold Heating Solutions. As leading installers, we provide a sustainable and energy-efficient alternative to traditional boilers. The ZEB stands out by significantly cutting carbon emissions and operating on low carbon electricity, aligning your home’s warmth with the well-being of our planet.

The ZEB not only ensures an eco-friendly living space but also promises cost savings through its smart design, which leverages time-of-use tariffs to utilize cheaper off-peak electricity. This means you enjoy lower running costs while benefiting from a system that taps into the cleanest power available. With installation typically completed within just 1-2 days by our skilled technicians, the transition to a greener heating solution is seamless, with no major changes to your existing heating infrastructure required.

Cotswold Heating Solutions is dedicated to enhancing your home with the ZEB’s advanced features. Its ability to intelligently manage and release heat, combined with the adaptability to integrate with your current heating system, makes it a forward-thinking choice for those seeking efficiency without the environmental impact. Embrace a warmer, more sustainable future with us, and experience the difference of a modern heating solution tailored to the needs of both your lifestyle and the planet.

Intelligent Heating

What sets the ZEB apart is its intelligent operation. Acting much like a thermal battery, it stores heat efficiently and releases it according to your needs, using a smart charging algorithm that considers your routine, local weather, and energy pricing. The control is at your fingertips with the tepeo app, which gives you the ability to adjust settings, track energy usage, and monitor your heating system’s performance.

Designed to work within the same temperature range as fossil fuel boilers, the ZEB is an ideal replacement that offers a quick and easy upgrade to more sustainable living. By choosing Cotswold Heating Solutions for your ZEB installation, you’re opting for a modern, efficient heating solution that’s kind to your wallet and the environment.

The ZEB’s compatibility with existing radiators and underfloor heating systems ensures it integrates effortlessly into your home without the need for costly renovations. Its compact design and quiet operation make it a subtle yet powerful addition to any space. With Cotswold Heating Solutions, you gain access to cutting-edge heating technology that prioritizes your comfort and convenience while taking a proactive step towards a cleaner, greener future.

Diagram Showing How the Zero Emission Boiler Works
Tepeo Zero Emission Boiler in Under stairs Cupboard

Warmer Home,
Lower Heating Bills

RadTherm® electric radiators save you money in three ways: using less energy, helping you waste less, and, potentially, cutting your other electricity costs and as they need no servicing you will save there too!

Hot Water Tank FAQ'S

What is a Zero Emission Boiler (ZEB)?
The Zero Emission Boiler, or ZEB, is an innovative heating system that operates on electricity, designed to store heat and release it as needed in your home. It’s called ‘zero emission’ because it uses electricity which can be sourced from renewable energy, reducing the carbon footprint associated with heating.
How does the ZEB reduce carbon emissions?
The ZEB utilizes low carbon electricity and is most efficient when powered by renewable energy sources. By charging during times when the grid is utilizing more renewable energy, it ensures that your heating system is contributing less to carbon emissions.
Will the ZEB work with my existing heating system?
Yes, the ZEB is designed to work with the same flow and return temperatures as a traditional boiler, making it compatible with most existing radiators and underfloor heating systems.
How can the ZEB save me money on my energy bills?
The ZEB is designed to operate using time-of-use tariffs, charging during off-peak hours when electricity is cheaper. This can significantly lower your energy bills, especially if you’re on a variable rate electricity plan.
Is the installation process for the ZEB disruptive?
Not at all. Installation by Cotswold Heating Solutions is typically done within 1-2 days with minimal disruption, as the ZEB is designed to integrate seamlessly with your existing heating infrastructure.
How do I control the ZEB?
The ZEB is equipped with smart technology that can be managed via the tepeo app. This app allows you to adjust settings, track energy usage, and control your heating system remotely.
Can the ZEB store energy from renewable sources like solar panels?
Yes, if you have solar panels or other renewable energy generation systems, the ZEB can store this energy for heating, maximizing your use of clean energy.
Is the ZEB suitable for all property types?
The ZEB comes in various sizes and is suitable for a range of properties, from apartments to detached homes. However, we recommend consulting with our specialists at Cotswold Heating Solutions to find the perfect fit for your space.
What are the dimensions of the ZEB?
98cm (height) x 60cm (width) x 66cm (depth) - but it needs clearance of 7cm above and 5cm on all sides.
What is the storage medium made of?
Proprietary mix of high density, inert, non-toxic and low impact materials
How much energy does it store?
40kWh of usable thermal energy
How much power can it output?
15kW maximum
How does it work?
Electricity powers electric heating elements which heat the storage medium (the ‘core’) which then stores the heat until needed to heat your home/hot water.
How long will it last?
The core of the ZEB is designed so it doesn't degrade over time, in fact there’s a good chance it will outlast the home it’s installed in! However, the ZEB still needs to be maintained, like all boilers,
What maintenance does the ZEB require?
The ZEB is designed to be low-maintenance. However, we recommend an annual check to ensure everything is functioning efficiently, much like traditional boilers.

Our Which Trusted Trader Reviews​

Which? Trusted Traders

Excellent service start to finish.

I contacted Cotswold Heating Solutions (CHS) as I wanted to replace an old fuse board and install a more efficient alternative to an immersion heater. Service was immediately fast and friendly. Sarah and Jo were very good at getting the paperwork out promptly with an...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Exemplary service from quotation to installation

Having decided to supplement our central heating with stand alone radiators in 3 locations we contacted Cotswold Heating Solutions in respect of their electric radiators. This proved to be an inspired decision as the level of service we received was absolutely first class. From Billy...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Helpful, prompt, reliable and friendly

When we decided to replace our old oil-fired boiler with something more modern, there were a lot of choices. CHS helped us find the solution that worked best for us, got the job done quickly (but within the timeframe that suited us), was on site...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Oxfordshire

Read reviews on Which? (opens in a new tab)

Proud To Be Endorsed By Which?...

From humble beginnings in 1957 Which? is now the largest consumer body in the UK.

Not all companies who apply to become a Which? Trusted Trader pass the assessment procedure. We believe that as well as guaranteeing the continued high-level of service that our customers have come to expect, we can now demonstrate that we are a bona-fide, trustworthy and highly reputable company.

Which? Trusted TradersCotswold Heating Solutions Ltd4.9 / 5153 reviews on Which?98% of customers recommendUpdated September 17, 2026View all reviews on Which? (opens in a new tab)
Which? Trusted Traders

Excellent service start to finish.

I contacted Cotswold Heating Solutions (CHS) as I wanted to replace an old fuse board and install a more efficient alternative to an immersion heater. Service was immediately fast and friendly. Sarah and Jo were very good at getting the paperwork out promptly with an...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Exemplary service from quotation to installation

Having decided to supplement our central heating with stand alone radiators in 3 locations we contacted Cotswold Heating Solutions in respect of their electric radiators. This proved to be an inspired decision as the level of service we received was absolutely first class. From Billy...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Helpful, prompt, reliable and friendly

When we decided to replace our old oil-fired boiler with something more modern, there were a lot of choices. CHS helped us find the solution that worked best for us, got the job done quickly (but within the timeframe that suited us), was on site...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Oxfordshire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Flexible and not pushy

Very pleased with the work Cotswold Heating Solutions did installing a new Sunamp Thermino 150 ePlus into our new home. The team worked well, thanks.

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Somerset

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Excellent experience

I’m happy to recommend Cotswold Heating Solutions based on our recent experience. From the initial discussion surrounding our specific requirements to the quality, timeliness, tidiness and customer friendly approach of our fitters the experience has been excellent. Well done to all concerned.

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in West Northamptonshire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Extremely efficient from start to finish

Cotswold Heating recently fitted me a complete new heating system From quotation to fitting, I only experienced a complete and professional company. The removal of the old system and fitting of the new 6 radiators and a towel rail were completed very efficiently and with...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Worcestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Great work, and on-time

After reviewing options a few months ago for solar power hot water, I contacted Cotswold Heating Solutions and yesterday the install took place. The guys arrived on time, friendly and professional. The work was done within four hours with minor stops to mains water and...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in South Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Excellent seamless installation

Through the whole process from start to finish it have found Cotswold a highly professional company I had 3 old storage heaters replaced and the installation was done with professionalism I would not hesitate to recommend Cotswold Heating

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Swindon

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Great Company

We first used Cotswold Heating Solutions in 2020 and were very happy with the service then. We have used them again to provide a heating solution for an extension to a holiday cottage in Wales. The initial advice was excellent- informative, helpful and with no...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Hassle free installation of 7 heaters

Moving in to a new house with a variety of electric heaters of different ages and types, I went to Cotswold to help me rationalise and modernise. The first survey visit was very informative and we worked out the combination and style of heaters I...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Wiltshire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Excellent and efficient work.

This is a family business with all the staff committed to excellent service. Work was done on time by a friendly and experienced workforce who were obliging and eager to do their best. We cannot praise this compny more highly than to say "use them...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Oxfordshire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Service call.

I’ve been a customer of CHS for a couple of years, having 8 radTherm radiators and a Sunamp heat battery. A 3rd party electrician recently caused the Sunamp to fail, so I contacted Sarah at CHS for help. At the same time I flagged up...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Worcestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Transformation of home heating system

This company has been a pleasure to work with at every stage of the process. The initial survey was both informative and helpful in identifying some preliminary electrical work to be done to make for a smooth installation. Once the decision to proceed was taken...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Great Service From First Contact To Final Installation

We have recently had an additional radtherm radiator installed and like initial installation a few years ago , involving replacement of gas heating system with 7 electric radiators. From first contact to final installation the overall service was excellent. Would have no hesitation in recommending...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in North Somerset

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Cotswold Heating Installations

Cotswold Heating have shown to be a very competent service business, being very conscious of ensuring customer care and attention to their needs - day one their company manager visits the property and spends quality time with its customers in assessing and advising on how...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in West Midlands

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Easy process from start to finish

Very good company to deal with. I was kept informed all the way and any questions answered straight away. They even provided the extra part for the shower at no expense to me. On the day of installation the men turned up on time and...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Oxfordshire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Brilliant work

I am very pleased with this company from start to finish very professional friendly the installers were brilliant explained everything I needed to know

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Oxfordshire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Great work and Great staff

On the day the installers turned up in the timeframe that was set. Great installers and very polite and did the work well. Looked after my property at the same time. The customer services are great and very polite and helpful. Would definitely recommend them.

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Efficient and professional

The installation team worked very efficiently the old system of boiler, radiators and water heater were removed quickly and carefully with the minimum of fuss. The new system installed very efficiently as well. They were very tidy and a friendly team. The Sunamp water system...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Cotswold Heating Solutions

The heating is controllable, efficient and easy to use. I was very impressed, it took less than three hours to remove and install the new radiators. I was pleased with the service from start to finish and the app is so easy to use. Four...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Oxfordshire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Excellent all round service from inquiry to installation

A very good experience working with Cotswold Heating Solutions on a unique problem to find a heating solution for our church. The team were very professional all the way through the process from inquiry to site visit and full installation. Very good service and keeping...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Gloucestershire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

radTherm Smart Core Radiators

Having been cold for much of the winter because of the high cost and ineffectiveness of the convector panel heaters in my flat, it is a huge relief to now have a proper heating system. Cotswold Heating Solutions (CHS) has been a pleasure to deal...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in North Somerset

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

New storage heaters.

Was a joy dealing with a well run, friendly local firm. All work and communication was great. Would strongly recommend.

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Greater London

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Excellent Service

Three ancient storage heaters were quickly dispatched and I now have new radtherm radiators. What a transformation: the heating is controllable and efficient. I was amazed that it only took the cheery technicians 3 hours to install the radiators. I am very pleased with the...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Warwickshire

Read reviews on Which? (opens in a new tab)

Which? Trusted Traders

Total replacement of night storage heaters

Seven ancient and inefficient night storage heaters have bitten the dust, replaced by 7 Radtherm heaters. From a helpful website, to a very timely response to our first enquiry, to a prompt and very informative survey and a speedy quotation, and then on to installation...

Recommended

Customer Service
5/5
Quality
5/5
Value
5/5

Customer in Bath and North East Somerset

Read reviews on Which? (opens in a new tab)