Boiler installation
in Coventry & surrounding areas
We’re independent & local! You can rest assured knowing you will receive honest and bespoke advice when you choose Green Box Energy.
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Coventry's local boiler installers
Our team of fully qualified engineers are local to you and ready to help. Whether you’re replacing an old system or fitting a brand-new boiler, we provide expert advice and fast, tidy installations.
- Local and trusted
- Fully certified and experienced professionals
- Up to 12 years guarantee
- A-rated boiler installations
- Highest quality installations
- Available for call out across the West Midlands

What our clients say...
EXCELLENT Based on 38 reviews James Brookes2025-04-17Trustindex verifies that the original source of the review is Google. I couldn’t be happier with the heat pump installation completed by James and the team at Green Box Energy. From the initial consultation to the final handover, James was professional, knowledgeable, and a pleasure to deal with. He took the time to explain everything clearly, answered all my questions, and ensured the entire process ran smoothly. The installation itself was done to a very high standard — neat, efficient, and completed on schedule. It’s clear James takes real pride in his work, and it shows in the results. The new heat pump system is working perfectly and has made a noticeable difference in comfort and energy efficiency. I highly recommend Jamie and Green Box Energy to anyone considering a heat pump installation. Outstanding service from start to finish! charli graham2025-04-17Trustindex verifies that the original source of the review is Google. Excellent customer service and got the job done to a high standard highly recommend Jamie Cruickshank2025-04-17Trustindex verifies that the original source of the review is Google. Great service, quick and professional Sean Savage2025-04-05Trustindex verifies that the original source of the review is Google. Top professionals! James provided great advice and was conveniently able to provide me with a very reasonable quote via FaceTime as I last minute had to leave the property just before he was due to arrive. Jordan did a fantastic job of fitting a radiator in a work-in-progress utility room. He did the job in a single day and was extremely thorough in checking the central heating was all working properly before he left. Very neat, tidy and no mess at all. Also great communication and punctual too! Really nice not to have to be constantly chasing and ringing all the time to get them to either start, or come and finish a job they only half finished, so I very much recommend these guys, thank you both! Christine Gordon2024-11-07Trustindex verifies that the original source of the review is Google. Green Box replaced the pipe work in our house to enable the Heat Pump to work to it full potential. They were professional, considerate throughout the time they spent in our home. They talked us through everything they were doing and clean up after themselves. I would recommend Green Box Energy LTD to everyone who is in need of Plumbing, heating and I hope to have them service my heat pump in the near future. The cost of the work was pretty good. Gold stars avinder gill2024-10-27Trustindex verifies that the original source of the review is Google. Just had a new boiler installed by Green Box Energy. They were very good value and did a fantastic job. Would recommemend these guys. This is the third job they have completed for me. Always v good. Alex Read2024-10-25Trustindex verifies that the original source of the review is Google. New boiler relocated and 7 radiators fitted with remedial pipework. All installed to the highest standard and not a single issue throughout the process. James and Jordan were extremely accomadting from the large work carried out to the small details. Fast, precise and friendly too. Would absolutely recommend! david venn2024-09-13Trustindex verifies that the original source of the review is Google. James fitted a heat pump and did an amazing job. He was very polite and fast working. Excellent job and so happy to receive a £7.5k rebate on the pump. Sam Booker2024-08-09Trustindex verifies that the original source of the review is Google. Great service from start to finish! Highly recommend.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Which boiler is right for you?
Choosing the right boiler depends on your household size, water usage and available space.
Combi Boilers (Combination Boilers)
Combi boilers are compact and efficient, providing heating and hot water directly from the boiler without the need for a separate cylinder or water tank. Ideal for smaller homes or flats with limited space, they only heat the water you need, which helps reduce energy bills.
System Boilers
System boilers use a separate hot water cylinder to store water but don’t require a cold water tank. This means they can supply hot water to multiple taps at once, making them a great option for larger homes with more than one bathroom. Many key components are built into the boiler itself, helping with installation and reliability.
Conventional Boilers (Regular or Heat-Only Boilers)
Conventional boilers work with a separate hot water cylinder and a cold water tank, usually placed in the loft. They’re ideal for homes with traditional heating systems or low water pressure and can support high hot water demand across several outlets.

Customer FAQs
What type of boiler is best for my home?
This depends on your property size, number of bathrooms, and hot water usage. Combi boilers are great for small to medium homes, while system or conventional boilers suit larger properties.
How long does a boiler installation take?
Typically, a like-for-like boiler replacement takes 1–2 days. A full system conversion (e.g. from a conventional boiler to a combi) can take 2–4 days.
Do I need to replace my radiators too?
Not always. If your radiators are old or inefficient, it may be worth replacing them to get the best performance from your new boiler.
Will I be without heating or hot water during the installation?
Yes, for a short period. However, we aim to minimise disruption and often get heating back up the same day.
Are your installers Gas Safe registered?
Absolutely. All of our engineers are fully qualified and Gas Safe registered for your safety and peace of mind.
Will a new boiler save me money?
Yes – modern boilers are much more energy-efficient. Depending on your current setup, you could save hundreds of pounds a year on your energy bills.
How do I book a boiler installation?
Simply get in touch for a free, no-obligation quote. We’ll assess your home, recommend the right boiler, and schedule an installation that works for you.
Do you provide a warranty?
Yes, all boilers we install come with a manufacturer warranty – usually between 5 and 12 years depending on the model.