Customer rep that i chatted with was helpful in getting a competitive price and arranging a lot quick. any changes, i was informed on time and in one occasion, i was compensated for the delay. All thr... See more
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Review summary
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What people talk about most
Reviews shaping this summary
Really pleased overall with WarmZilla and would probably give 4.5 stars if Trustpilot allowed it. The boiler installation itself was excellent value for money and the engineers were professiona... See more
Company replied
Our boiler was fitted on the second attempt after the first fitter broke down on route. The men were prompt and efficient fitting the new boiler and left the place tidy. Unfortunately as yet the boil... See more
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Super quick. Kept informed. The engineer (Marcos) was outstanding in every way. Professional, polite, helpful, patient and highly skilled. Incredible how much he achieved in less than 2 days and le... See more
Company replied
Company details
- Boiler Supplier
- also in
- Boiler and Heating Service
- Electric Vehicle Charging Station
- Gas Engineer
- Gas Installation Service
- Gasfitter
About WarmZilla
Written by the company
WarmZilla is an online home services provider transforming how the UK buys and installs new boilers, EV chargers, air conditioning, and home heating solutions. Founded by experienced Gas Safe engineers, WarmZilla was built to eliminate pushy salespeople, hidden fees, and lengthy home visits by taking the entire quote and ordering process online. Using our quick online survey, customers receive fixed-price, tailored quotes in minutes. You simply choose the ideal boiler from leading brands - such as Worcester Bosch, Ideal, Vaillant, and Baxi - pick your preferred installation date, and let our team handle the rest. Every installation is carried out by handpicked, local Gas Safe registered engineers ("WarmInstallers") who deliver exceptional workmanship, complete system cleanses, and a clean, hassle-free setup.
We back all our work with a 1-year workmanship guarantee, top manufacturer warranties up to 10 years, and a price match promise. To make home upgrades accessible to everyone, we offer flexible payment options, including 0% interest-free finance. Beyond boiler installations, WarmZilla provides comprehensive home cover plans, annual servicing, emergency repairs, and EV charger installations across England, Scotland, and Wales.
Whether you need a quick boiler replacement or routine home care, WarmZilla delivers speed, transparent pricing, and 24/7 customer support - making home services simpler, fairer, and completely stress-free.
Best Price Guarantee
We won't be beaten on price
If you find a cheaper price on a like-for-like installation elsewhere, we guarantee to beat the price and take an extra £50 off your order.
Contact info
Capital Tower, Greyfriars Road, CF10 3AG, Cardiff, United Kingdom
- 02921 684 152
- ask@warmzilla.co.uk
- warmzilla.co.uk
4.3
Excellent
2K reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 72% of negative reviews
Typically replies within 2 weeks
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
thoroughly recommend
Super quick. Kept informed. The engineer (Marcos) was outstanding in every way. Professional, polite, helpful, patient and highly skilled. Incredible how much he achieved in less than 2 days and left our house better than he found it (thanks for taking out some other old pipes). Can't recommend WarmZilla and especially Marcos enough. Many thanks.
May 5, 2026
Unprompted review
Reply from WarmZilla
Hi Richard,
Thank you so much for your fantastic review.
We’re delighted to hear you were kept informed throughout and that the installation was completed so quickly.
It’s especially great to hear such amazing feedback about Marcos. We’ll be sure to pass on your kind words — he’ll be thrilled to know his professionalism, skill, and care made such a positive impression. Going the extra mile to leave your home better than he found it is exactly the standard we aim for.
Thank you for your recommendation and for choosing us— we truly appreciate your support.
Good value service
We had ongoing issues with our boiler and struggled a bit with contacting Warmzilla, however once we had established communication an engineer was found and came to us within a day, and our agent was extremely helpful. A good service for the price we pay.
May 6, 2026
Unprompted review
Reply from WarmZilla
Hi,
Thank you for taking the time to share your feedback.
We’re sorry to hear there were initial difficulties reaching us regarding your boiler issue.
We’re pleased that once contact was established, an engineer was arranged promptly and attended within a day, and that your agent was helpful throughout. It’s good to know you found the service to be good value for the price you pay.
For future reference, there are several ways to contact us, including telephone, live chat, our online enquiry form, email, and WhatsApp.
We really appreciate your honest feedback, as it helps us continue to improve, and we’re glad we were able to resolve things for you.
First time needing a new boiler and…
First time needing a new boiler and lots of companies to choose from.
Warmzilla promised a smooth process and definitely delivered.
Their chosen engineer Richard was knowledgeable, clean working and polite. Completed the work in the time frame specified and all for a reasonable price.
Communication through WhatsApp made it extra easy.
May 1, 2026
Unprompted review
Reply from WarmZilla
Hi,
Thank you for your detailed review.
We’re really pleased to hear that your first experience of getting a new boiler went smoothly and that we delivered on the promise of a simple, stress-free process.
It’s great to know Richard provided such a professional service — being knowledgeable, tidy, and polite throughout the installation. We’re also glad the work was completed within the agreed timeframe and at a fair price.
We’re especially pleased you found the WhatsApp communication helpful in making everything easier.
Thank you for choosing Warmzilla and for your recommendation — it really means a lot to us.
Kian & Amy ( from Warmzilla ) were very…
Kian & Amy ( from Warmzilla ) were very helpful / replied to my questions & concerns very quickly. They kept me updated with progress of the order & delivery process. Even the Installation team were polite & professional
May 1, 2026
Reply from WarmZilla
Hi,
Thank you for your kind review.
We’re really pleased to hear that Kian and Amy were able to support you quickly and keep you informed throughout your order and delivery. It’s also great to know our installation team made a positive impression.
We’ll be sure to pass your feedback on to the team.
Thanks again for choosing us!
A company that gets customer service
A company that gets customer service. If only all companies were like Warmzilla. Just made my second major purchase with them of air con having bought a boiler off them before. I also have a boiler cover policy with them. Their prices cannot be beaten - lowest to be found but they operate a price match in the unlikely event that you find a better price - and their customer service is phenomenal. Nothing is too much for them. They respond quickly and professionally to any query you raise. They really are my go to company for the household items they offer and they should be yours too!
April 20, 2026
Unprompted review
Reply from WarmZilla
Hi,
Thank you so much for your continued support and for taking the time to share such a detailed review.
We’re really pleased to hear that you’ve had a positive experience across multiple purchases, and that our pricing and customer service have met your expectations. It’s great to know our team has been able to support you quickly and professionally whenever needed.
Your recommendation means a lot to us, and we’re grateful to be your go-to for home essentials.
Thanks again for choosing us!
Exceeded expectations
Really good customer service and communication from start to finish.
I would definitely recommend them to anyone.
April 24, 2026
Reply from WarmZilla
Hi Sharon,
Thank you for your kind review.
We’re really pleased to hear you were happy with the customer service and communication from start to finish.
Your recommendation means a lot to us, and we truly appreciate you taking the time to share your experience.
The Engineer was professional
The Engineer was professional, knowledgeable and forthcoming in answering technical questions.
April 21, 2026
Reply from WarmZilla
Hi,
Thank you for your review.
We’re really pleased to hear the engineer was professional, knowledgeable, and happy to answer your technical questions.
It’s great to know you felt well informed throughout the visit — we truly appreciate your feedback.
Reported broken boiler Wednesday…
Engineer arrived on time, fixed issue this same day, even though he had to travel for a parts.however after 3weeks issue recurred and waiting for it to be fixed
April 22, 2026
Unprompted review
Reply from WarmZilla
Hi,
Thank you for taking the time to share your feedback.
We’re sorry to hear there were initial difficulties reaching us regarding your boiler issue.
We’re pleased that once contact was established, an engineer was arranged promptly and attended within a day, and that your agent was helpful throughout. It’s good to know you found the service to be good value for the price you pay.
For future reference, there are several ways to contact us, including live chat, our online enquiry form, email, and WhatsApp.
We really appreciate your honest feedback, as it helps us continue to improve, and we’re glad we were able to resolve things for you.
Reply from WarmZilla
Hi,
Thank you for your review!
We’re really pleased to hear you received excellent customer care and a quick response.
We truly appreciate you taking the time to share your feedback.
Very positive experience
Paid the amount we were quoted. The engineer was very nice and managed everything in a day. We were very impressed and incredibly grateful after a very cold start to moving into our forever home.
April 8, 2026
Reply from WarmZilla
Hi Emily,
Thank you so much for your kind review!
We’re really pleased to hear that everything went smoothly and that our engineer was able to get everything sorted for you in a single day. Moving into a new home can be stressful, so we’re glad we could help make your start a warm and comfortable one.
Wishing you many happy years in your forever home, and thank you again for choosing us!
Let down by British Gas, but Warmzilla didn't disappoint!
British Gas had let me down when it came to providing a quote so I thought I'd go directly to the manufacturer for a price.
Warmzilla are the national installation partners for Worcester Bosch and their pricing was very competitive and the agent I dealt with (Kian) for the quote and survey (via a WhatsApp video call) was helpful, efficient and in no way overbearing or pushy for me to go ahead with the quote.
On the day of installation, everything went smoothly and the engineer that fitted the boiler was very tidy, friendly and professional, making sure that everything was left working as it should and made sure to answer any questions I had.
All in all, this was a first rate service and I would recommend them to friends and family and also use them again if the need arose.
April 22, 2026
Reply from WarmZilla
Hi Kate,
Thank you for taking the time to leave such a detailed review, we really appreciate it.
We’re glad we could step in after your initial experience and provide a competitive quote and a smoother process. It’s great to hear that Kian made the survey straightforward and pressure-free, and that your installation day went smoothly with a tidy and professional finish from the engineer.
Your recommendation to friends and family means a lot to us, and we’re delighted that you were happy with the service from start to finish.
Thank you again for choosing Warmzilla—we’re always here if you need us in the future.
great service
April 21, 2026
Reply from WarmZilla
Hi,
Thank you for your kind feedback!
We're really pleased to hear you were happy with the service.
If you ever need us again in the future, we’ll be more than happy to help.
Reply from WarmZilla
Hi David,
Thank you for your lovely feedback!
We're really pleased to hear that you found our team friendly and that the regular updates kept you well informed throughout.
We appreciate you choosing us and look forward to helping you again when the time comes.
The only problem I have is that I have…
The only problem I have is that I have to contact you every year to get my boiler serviced
April 17, 2026
Reply from WarmZilla
Hi,
Thank you for your feedback—we really appreciate you taking the time to share it.
We understand that remembering to contact us each year for your boiler service can be a bit inconvenient. We’re always looking at ways to make this process easier for our customers, and your feedback is very helpful in highlighting this.
Thank you again for choosing us.
It would have been 5 stars but the…
It would have been 5 stars but the first time the engineer was supposed to be here to service our bolier they did not turn up so I had to get back to warmzilla and report it then they made another appointment and they turned up and the engineer was very professional
April 7, 2026
Reply from WarmZilla
Hi Mark,
Thank you for your feedback.
We’re really sorry about the missed initial appointment and the inconvenience it caused.
We’re glad to hear that the follow-up visit went smoothly and that our engineer provided a professional service.
If there’s anything else we can help with, please don’t hesitate to get in touch.
I recently had an EV charger installed…
I recently had an EV charger installed by Warmzilla, and the entire experience from start to finish was exceptional. Communication was top tier throughout the process—I’ve honestly never experienced such high-quality customer service and aftercare.
From the initial contact, to arranging the appointment, and through to the installation itself, everything was handled in a professional and efficient manner. The installation was first class, and the team made the whole process smooth and stress-free.
Warmzilla truly sets the standard for how this type of service should be delivered. I wouldn’t hesitate to recommend them.
April 13, 2026
Unprompted review
Reply from WarmZilla
Hi,
Thank you so much for your fantastic review!
We're absolutely delighted to hear that you had such a positive experience with your EV charger installation. Providing clear communication and first-class customer care is something we take great pride in, so it's wonderful to know this stood out to you.
We'll be sure to share your kind words with the whole team—they'll really appreciate knowing their professionalism and effort made the process smooth and stress-free for you.
Thank you again for choosing us and for recommending us. If you ever need any support in the future, we're always here to help.
Extremely Disappointed
Extremely Disappointed – Avoid if You Value Reliability and Safety
The ordering process was quick and easy, but everything after that was a nightmare. The installation was delayed by six weeks, with the engineer failing to turn up on four separate occasions. Each time I was promised a call back from customer service, but none ever came.
When the boiler was finally installed, the work was sloppy and unsafe — the chimney wasn’t fitted correctly, and the electrics were poorly done. Because of the chimney issue, smoke entered my home and made my family ill. It was terrifying and completely unacceptable.
After waiting again for corrections, I noticed a strong smell of oil that has only worsened. Three weeks later, my oil levels have dropped, suggesting a leak in the pipework, and the boiler is losing pressure too.
What should have been a straightforward job turned into weeks of stress, health risks, and constant chasing. I would strongly advise anyone considering this company to look elsewhere until they improve their reliability, communication, and workmanship.
January 27, 2026
Unprompted review
Reply from WarmZilla
Hi,
Thank you for your feedback.
This is currently with our senior management team for who will be in touch.
We appreciate your patience while this is being investigated.
Outstanding customer care
Outstanding customer care. The engineers were very informative, professional and tidied up after they'd completed the installation. I would highly recommend. Thank you.
April 9, 2026
Reply from WarmZilla
Hi Kate,
Thank you so much for your kind words and recommendation.
We're delighted to hear that you were pleased with the service provided by our engineers and that their professionalism and attention to tidiness made a positive impression.
Your feedback means a lot to us, and we truly appreciate you taking the time to share your experience. If you ever need any assistance in the future, we’ll be more than happy to help.
Thank you again for choosing us.
Great responsive service!
April 9, 2026
Unprompted review
Reply from WarmZilla
Hi Rebecca,
Thank you for your great feedback!
We're pleased to hear that you found our service responsive.
We really appreciate you taking the time to share your experience and look forward to helping you again in the future.
Highly recommend warmzilla
Highly recommend warmzilla
Very reliable company with great communication.
April 3, 2026
Unprompted review
Reply from WarmZilla
Hi,
Thank you for your review!
We’re thrilled to hear you found us reliable and appreciated our communication.
Your recommendation means a lot to us, thank you for your support!
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