Combi-boiler replacement completed neatly by polite and competent gas-fitter in one visit lasting about 5 hours. Seems to be working fine. A follow-up visit was offered to improve the boiler contro... Vis mer
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Amazing service! I ordered a new boiler and it was delivered and fitted just two days later. The gas engineer was brilliant and highly professional, swapping my old system for the new one in a single... Vis mer
I had a AC unit fitted and cannot thank the company and Engineer enough. i had fantastic service from the call centre especially Abbi who went out of her way to explain everything in great detail and... Vis mer
fantastic service from start to finish. this is my second time using Warmzilla. I got a boiler from there 3 years ago and had such a good experience that i decided to get air con from them too. qualit... Vis mer
Informasjon om virksomheten
- Leverandør av varmtvannsbeholdere
- også i
- Gassingeniør
- Gassinstallasjon
- Gassmontør
- Ladestasjon for elektriske biler
- VVS-firma
Om WarmZilla
Skrevet av virksomheten
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.
Kontaktopplysninger
Capital Tower, Greyfriars Road, CF10 3AG, Cardiff, Storbritannia
- 02921 684 152
- ask@warmzilla.co.uk
- warmzilla.co.uk
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I had an air conditioning system…
I had an air conditioning system installed by WarmZilla. The team completed the work professionally and tested the system thoroughly. Everything is now working perfectly and to a high standard. The engineers were helpful and the overall experience was very good. I’m happy with the result and would recommend WarmZilla.
18. juni 2026
Svar fra WarmZilla
Hi,
Thank you for taking the time to leave such a positive review. We're delighted to hear that you're pleased with your new air conditioning system and that everything is working perfectly.
It's great to know that the engineers completed the installation to a high standard, thoroughly tested the system, and provided helpful support throughout the process. We take pride in delivering a professional service and ensuring our customers have a smooth experience from start to finish.
Thank you for choosing WarmZilla and for recommending us. We truly appreciate your support and hope you enjoy the comfort of your new system for many years to come.
Sometimes it’s better to have experienced Engineer
Been paying Warmzilla for 3 years for boiler service and breakdown plan £19 per month. It took them more than a month to organise service compared to last year. Engineer turn up for service and could not get the boiler to turn on and then walks out without any paperwork and Warmzilla tells me to get this sorted by Vaillant. They were able to get the Engineer out on next day (Saturday) and they confirmed nothing wrong with the Boiler. Apparently the subcontractor for service didn’t understand the working of Boiler and how thermostat functioned. It’s been working fine ever since. Amy however kept us informed and replied promptly to all the emails. Now waiting for rebooked service appointment.
19. juni 2026
Svar fra WarmZilla
Hi,
Thank you for your feedback. We are sorry to hear that you were left feeling disappointed following your recent service visit.
As discussed with one of the team, your central heating system contains a number of different components, many of which would be covered under your breakdown plan. However, following visit, the issue was determined to be with the boiler itself, which remains under the manufacturer’s warranty. For this reason, you were advised to contact the manufacturer directly so that the fault could be addressed under the terms of that warranty.
We appreciate that being redirected was frustrating, particularly after the service visit, and we apologise for any confusion caused regarding the contact details provided.
We value your custom over the past three years. Please do let us know if we can be of any further assistance.
Big promises, no delivery
Happily took my money and a timed, dated booking for a boiler check and repair. I liked the fixed price and availability, however the phone call from them the next day raised a fear, later confirmed, that they were unable to source an engineer and the cancellation email later that day confirmed it. 10 seconds to take the payment, days to refund it.
15. mars 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Hi,
Thank you for your feedback. We sincerely apologise that we were unable to carry out the work as planned and understand how disappointing this must have been.
Unfortunately, the engineer assigned to your appointment became unwell, which meant we were unable to fulfil the appointment as purchased.
We have checked and can confirm that your refund was processed on the day the booking was cancelled at your request. While we action refunds immediately, the time it takes for the funds to appear back in your account is determined by the payment provider and is unfortunately outside of our control.
We are sorry for the inconvenience caused.
A very polite and friendly gas engineer…
A very polite and friendly gas engineer serviced my boiler. He was very thorough and gave me useful feedback afterwards.
16. juni 2026
Svar fra WarmZilla
Hi,
Thank you for taking the time to leave such a positive review.
We’re delighted to hear that our engineer was polite, friendly, and thorough during your boiler service. Providing clear feedback and excellent customer service is something we take great pride in, so it’s wonderful to know this was reflected in your experience.
We appreciate your kind words and look forward to assisting you again in the future.
Price and service was very good
16. juni 2026
Svar fra WarmZilla
Hi,
Thank you for taking the time to leave a review.
We're glad you were satisfied with both the value we provide and the service you received.
We truly appreciate your feedback and look forward to assisting you again in the future.
AC Installation
I recently had an air conditioning installation carried out by Warmzilla. The process was smooth and professional. Once the installation was complete, the engineer clearly explained how the system works and asked me to get in touch if I experienced any issues. I highly recommend their service.
12. juni 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Hi,
Thank you for your wonderful review!
We're delighted to hear that your air conditioning installation went smoothly and that our engineer provided a clear explanation of the system and its operation. We pride ourselves on delivering a professional service from start to finish, so it's great to know we met your expectations.
We truly appreciate your recommendation and are always here if you need any assistance in the future. Enjoy your new air conditioning system!
Problems resolved, All Good
Had a few problems but they were resolved by the company and they kept me informed. All tradesmen were excellent.
4. juni 2026
Svar fra WarmZilla
Hi Dave,
Thank you for taking the time to leave us a review.
While we're sorry to hear there were a few issues along the way, we're pleased that we were able to resolve them and keep you informed throughout the process. It's especially rewarding to hear your kind comments about our tradesmen, and we will be sure to pass on your feedback to the team.
We appreciate your patience and support, and we're delighted that you were happy with the overall service.
Telephone not answered
Telephone not answered . Live chat unavailable at 4pm on a Thursday.
Waiting to book boiler service for weeks ....
Very strange
11. juni 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Hi,
Thank you for your feedback, and we're sorry to hear about the difficulties you've experienced while trying to arrange your boiler service.
We've looked into this and can see that a call was made to our sales line. We haven't been able to locate a live chat message, but we'll certainly investigate this further as we understand how frustrating it must have been to feel unable to get in touch.
We'd like to get this resolved for you as quickly as possible, and a member of our team will be in touch with you today to assist with booking your service and to discuss your experience.
Thank you for bringing this to our attention.
Im very happy with the service ☺️
Im very happy happy with the service ☺️
10. juni 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Hi Jess,
Thank you for your kind review.
We are delighted to hear that you are very happy with the service you received. Providing excellent customer service is our top priority, and it's wonderful to know that our team met your expectations.
We truly appreciate your feedback and look forward to serving you again in the future.
Where do you start with this company
Where do you start with this company
Firstly steer clear.
I had the misfortune of purchasing a EV charger from this company in August 2025.
They sub contracted 0out the ev installation to a third party company
It’s was installed incorrectly, causing damage to my home central heating system, due to a wiring fault on installation.
The unit was exchanged and still didn’t work.
6 months after my initial complaint and numerous emails what’s app messaging I was in formed that the issue had been forwarded to the senior management team
This procrastination team must only meet annual.
So 10 months into the issue still nothing,
But no doubt a comment from warmzilla will be attached to this review
29. august 2025
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Hi,
Thank you for taking the time to share your feedback. We are sorry to hear about your experience and understand your frustration, particularly given the length of time this matter has been ongoing.
We can see that a member of our team has already tried to contact you, and they will continue to look into this further to support you with a resolution.
I had a complaint but this was dealt…
I had a complaint but this was dealt with efficiently, with a full apology & compensation!
8. juni 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Hi,
Thank you for your review.
We sincerely appreciate you giving us the opportunity to address your concerns. While we're sorry that your initial experience led to a complaint, we're pleased that our team was able to resolve the matter efficiently and to your satisfaction. Your feedback is valuable to us, and we look forward to welcoming you again in the future.
Fitter did an excellent job,very clean…
Fitter did an excellent job,very clean tidy in is work,I would recommend Aziz to anyone,once again, thanks.
3. juni 2026
Svar fra WarmZilla
Hi Janet,
Thank you for your wonderful feedback. We’re delighted to hear that Aziz did an excellent job and that you were pleased with the cleanliness and tidiness of his work.
Your recommendation means a great deal to us, and we’ll be sure to pass your kind comments on to Aziz.
Thank you for choosing our services, and we look forward to assisting you again in the future.
Marcos the plumber is a nice guy and…
Marcos the plumber is a nice guy and kept us informed. Tidy finish.
1. juni 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Hi,
Thank you for taking the time to leave us a review.
We're pleased to hear that Marcos kept you well informed throughout the job and delivered a tidy finish. We take great pride in providing excellent customer service and high-quality workmanship, so it's wonderful to know your experience reflected this.
We'll be sure to pass your kind comments on to Marcos. Thank you for choosing us, and we look forward to helping you again in the future.
Generally an excellent service
Generally an excellent service. I had been let down by other companies for reasons connected to flue installation and meter pipework. Warmzilla agreed to deal with these issues within their quotation. Installation of my new boiler was done within a few days of my accepting the quote. Two criticisms: Delivery of the new boiler, done on the day of installation, was delayed because the courier's van broke down. This meant installation did not complete until 2000. It might be better if boiler delivery took place before the installation day although I accept this may cause inconvenience to the customer. Also, the boiler registration process was not made clear. Apart from these points I am very happy with Warmzilla's service.
31. mai 2026
Svar fra WarmZilla
Hi Neil,
Thank you for taking the time to leave such a detailed review. We're delighted to hear that we were able to help where other companies had been unable to, and that your new boiler was installed within a few days of accepting the quotation.
We also appreciate your constructive feedback. Unfortunately, the courier's vehicle breakdown on the day of delivery was outside of our control, but we understand the impact this had on the installation finishing later than expected. Your suggestion regarding earlier boiler delivery is valuable, and we'll take it into consideration as we continue to improve our service.
We're also sorry that the boiler registration process was not communicated as clearly as it could have been. While information regarding the registration timeframe was provided at the point of purchase, we appreciate that this may not have been as clear as it should have been, and we'll review how we communicate this process going forward.
Thank you again for choosing Warmzilla. We're pleased that, despite these issues, you are happy with the service you received and we wish you many years of reliable heating from your new boiler.
Kind regards,
The Warmzilla Team
Despicable company
Despicable company. I would leve zero stars if that was an option. I had a boiler fitted recently,I messaged the fitter the morning after installation to tell him there was water coming through my ceiling and he did not message back, he had left a radiator leaking that has damaged my floor and ceiling. He also left a magnetic filter leaking. They also stood on my kitchen worktop instead of using step ladders and have caused damage to that. Warmzilla and their fitter have not been back to have a look, inspect the work or put things right. They asked for photos which I sent and just accepted zero responsibility. They said my kitchen worktop was fitted incorrectly, it has been in there for over 10 years and regardless of how it is fitted a tradesman should be using step ladders not a kitchen worktop. That is a health and safety issue! The boiler has been having pressure issues since it has been fitted, I will be taking this further with legal action DO NOT USE THIS COMPANY!
6. mai 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Hi,
Thank you for taking the time to leave your feedback.
We can see that a member of our team has already been in contact with you and that an engineer has attended the property to investigate the issues raised. We are continuing to review the findings from the visit and the details of your case to ensure everything is properly assessed.
We appreciate your patience while this is being looked into and will continue to work with you towards a resolution.
I am absolutely delighted with my new…
I am absolutely delighted with my new boiler .
The two boys that came to do the installation were pleasant and helpful and explained everything to me .
They are a credit to their company .
28. mai 2026
Svar fra WarmZilla
Hi Alexis,
Thank you for your wonderful review. We're absolutely delighted to hear that you're so pleased with your new boiler.
It's great to know that our installation team provided a positive experience and took the time to explain everything clearly. We take great pride in our engineers, and we're sure they'll be delighted to hear your kind words.
Thank you for choosing WarmZilla. We hope you enjoy many years of reliable heating from your new boiler.
Svar fra WarmZilla
Thank you for your great feedback on WarmZilla. We’re really pleased to hear you were happy with the prompt installation and professional service provided.
We truly appreciate your support and thank you for choosing WarmZilla.
Great price, good communication
Great price, great customer service, thorough and friendly installer. Exactly how it should be
26. mai 2026
Svar fra WarmZilla
Thank you for the fantastic review! We’re delighted to hear you were happy with the price, communication, and customer service from WarmZilla.
It’s great to know the installer was thorough and friendly too — exactly the experience we aim to deliver for every customer. Thanks again for choosing WarmZilla and for taking the time to share your feedback.
After months of stress and repeated…
After months of stress and repeated chasing, WarmZilla have finally rectified the flue installation issue with my boiler after concerns were raised about whether it had originally been installed correctly.
While I appreciate that the issue has now been resolved, the overall experience has been extremely frustrating and time consuming.
Communication throughout the process was poor, and I had to repeatedly follow things up myself.
I also paid an additional £150 on the day of installation for electrical work relating to a fused spur, yet I still have not received the Minor Electrical Installation Works Certificate despite requesting it multiple times.
The installation issues, delays and lack of documentation caused unnecessary worry and inconvenience. Credit where it’s due that the flue issue has now been corrected, but the aftercare and handling of the complaint have fallen well below what I expected.
26. mai 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Thank you for taking the time to leave your feedback. Whilst we disagree with some parts of the review as we do not believe all aspects are fully accurate, we do accept that there were issues during the process that could have been handled better.
We appreciate you acknowledging that the flue issue has now been resolved, and we’re sorry the experience caused frustration along the way. Feedback, both positive and negative, is important to us as we continue improving our service at WarmZilla.
Take care, and please remember we’re always here to support you if you need us in the future.
Filled form, chat with Agent - No Quote Time Wasted
Filled form no results and then also discussed with chat REPRESENTATIVE but they unable to send a quote...simply wastage of time... customer need delivery....
25. mai 2026
Anmeldelse skrevet uten oppfordring
Svar fra WarmZilla
Thank you for your feedback. We’re really sorry to hear that your experience didn’t meet expectations, especially after taking the time to complete the form and speak with our team.
Unfortunately, in some cases we’re unable to provide an instant quote if the information provided doesn’t meet the criteria required for an accurate or safe estimate. That said, we completely understand your frustration and appreciate that your time is valuable.
At WarmZilla we’re constantly working to improve both our systems and communication to make the process smoother for customers. Thank you again for your honest feedback.
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