The engineer left the old boiler and all the packaging, loads of mess (brick dust, cable cut offs on the floors and benches), had my teen bleed the radiators and didn't replace the cupboard that the b... ãã£ãšèŠã
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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... ãã£ãšèŠã
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... ãã£ãšèŠã
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... ãã£ãšèŠã
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WarmZilla ã«ã€ããŠ
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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.
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Capital Tower, Greyfriars Road, CF10 3AG, Cardiff, è±åœ
- 02921 684 152
- ask@warmzilla.co.uk
- warmzilla.co.uk
4.3
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Great Service
2026幎2æ26æ¥
WarmZilla ããã®åç
Hi Kevin,
Thank you for your review!
Weâre really pleased to hear you received great service and appreciate you taking the time to share your feedback.
WarmZilla ããã®åç
Hi,
Thank you for your review.
Weâre really pleased to hear you found our service trustworthy and effective.
We truly appreciate your feedback and your support.
New boiler
Great value , very professional fitters , next day delivery on the hole great company and would recommend
2026幎2æ26æ¥
WarmZilla ããã®åç
Hi Christopher,
Thank you so much for your fantastic review!
Weâre delighted to hear you were pleased with the value, our professional fitters, and the next-day delivery. Itâs great to know everything came together smoothly for you.
Your recommendation means a lot to all of usâ thank you for choosing us!
Absolutely 5 star professional service
Absolutely 5 star professional service. Arrived as planned - Rob was lovely, quick and efficiently fit with no mess. Couldnât ask for better. Cost may be little more but it was worth every penny. Excellent throughout.
2026幎2æ17æ¥
WarmZilla ããã®åç
Hi,
Thank you so much for your wonderful 5-star review!
Weâre delighted to hear you were happy with the service and that everything went smoothly on the day. Rob will be especially pleased to hear your kind words about his efficiency and professionalism.
We always aim to deliver a high standard of workmanship with as little disruption as possible, so itâs great to know you felt it was worth every penny.
Thanks again for taking the time to share your experience â it truly means a lot!
Easy to order and great communication
Easy to order and great communication. The enginner was wonderful and did a great job!
2026幎2æ17æ¥
WarmZilla ããã®åç
Hi Alan,
Thank you so much for your kind review!
Weâre really pleased to hear that you found the ordering process straightforward and that our communication met your expectations. Itâs also fantastic to know the engineer did a wonderful job â weâll be sure to pass your feedback on.
We truly appreciate you taking the time to share your experience!
excellent company
excellent for communication, delivery, installation and after service of my boiler replacement. Amy and Josh were very good and helpful responding very quickly to my questions. good warranty provided on Ideal boiler.
2026幎1æ28æ¥
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WarmZilla ããã®åç
Hi David,
Thank you very much for taking the time to leave such a kind and detailed review!
Weâre delighted to hear that you were happy with the communication, delivery, installation, and after-service throughout your boiler replacement. Itâs wonderful to know that Amy and Josh were able to help and respond quickly to your questions â weâll be sure to pass your compliments on to them.
We really appreciate you choosing us and are glad youâre pleased with the warranty and overall service. Thanks again!
Needed a new boiler soon as
Needed a new boiler soon as, as mine was done and l had no hot water or heating. WarmZilla got me sorted within 24 hours as promised. Everything arrived when they said it would including the engineer. Glad to have heating and hot water back, all l have to do now is work out how to set it properly to my needs.
2026幎2æ9æ¥
WarmZilla ããã®åç
Hi Patricia,
Thank you for your great review!
Weâre really pleased we were able to get you back up and running so quickly.
Itâs fantastic to hear that we delivered everything as promised within 24 hours and that the arrival times were convenient for you.
If you need any help weâre always happy to help. Enjoy being warm again!
WarmZilla ããã®åç
Hi Gill,
Thank you for your kind review.
Weâre really pleased to hear you were happy with the pricing and finance options, and that our customer service stood out. We truly appreciate your feedback and your support.
Had boiler installed
Had boiler installed , trying to book 3 service to keep Warranty up to date. Been trying since November and not getting any respinse. Chat bot doesnt work. Loads of emails sent to Ask Warmzilla. Nothing. Paying £13.99 a month to include free service. Shocking service.
2026幎2æ17æ¥
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WarmZilla ããã®åç
Hi,
Thank you for your feedback. Weâre really sorry to hear about your experience â this certainly isnât the level of service we aim to provide.
We understand how important it is to keep your boiler service up to date for warranty purposes, and we sincerely apologise for the frustration caused by the lack of response.
Weâd really like to get this resolved for you as quickly as possible. We will be looking into this further.
Thank you for bringing this to our attention â we appreciate the opportunity to put things right.
Got a fantastic deal on Warmizlla forâŠ
Got a fantastic deal on Warmizlla for my Viessmann setup, and I couldnât be happier. Everything was handled smoothly from start to finish. The service, support, and aftercare were excellent, and the whole process felt professional and hassle-free. Really appreciate the effort from the team â highly recommended!
2026幎2æ16æ¥
WarmZilla ããã®åç
Hi Mohammed,
Thank you so much for your fantastic review!
Weâre absolutely delighted to hear that youâre happy with your Viessmann setup and that everything ran smoothly from start to finish. Itâs great to know that our service, support, and aftercare made the whole process feel professional and hassle-free â thatâs exactly what we aim for.
Your kind words truly mean a lot to the team, and we really appreciate you taking the time to share your experience.
If you ever need anything in the future, weâre always here to help!
Great fitting but annual boiler servicing is nightmare
Warmzila were great when they fitted my new boiler. The problem I am having with them is that I took a boiler service and maintaience contract with them over £170 per year but trying to get them to sort out my annual service is a nightmare. I have requested my service several times now but keep getting fobbed off saying they cannot get a engineer in my area to carry out the service. So buyer beware they talk a good game but cannot fulfill their side of the contract.
2026幎1æ12æ¥
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WarmZilla ããã®åç
Hi,
Thank you for your honest feedback. First of all, weâre really pleased to hear that you were happy with the boiler installation itself â that means a lot to us.
However, weâre very sorry to read about the difficulties youâve experienced arranging your annual service. We completely understand how frustrating this must feel, especially when you have a maintenance contract in place and expect it to be straightforward. Thatâs absolutely a fair expectation.
We would really like the opportunity to resolve this properly for you.
Weâll escalate this with our service team as a priority and ensure this is addressed as quickly as possible.
Thank you again for bringing this to our attention â we genuinely value your feedback and the chance to put things right.
WarmZilla ããã®åç
Hi,
Thank you for your review!
Weâre really pleased to hear you had a good experience and that the work was completed on time. Delivering quality service efficiently is something we take great pride in.
If thereâs ever anything else you need, weâll be more than happy to help!
Amazing experience recommended toâŠ
Amazing experience recommended to anybody 10/10 experience!!!
2026幎2æ11æ¥
èªçºçãªã¬ãã¥ãŒ
WarmZilla ããã®åç
Hi Chris,
Thank you for the fantastic review!
Weâre absolutely delighted to hear you had an amazing experience and would recommend us â 10/10 means the world to our team.
We really appreciate your support!
WarmZilla ããã®åç
Hi,
Thank you for the great review!
Weâre so pleased you were happy with the service and really appreciate the recommendation.
Amazing service would definitelyâŠ
Amazing service would definitely recommend
2026幎2æ10æ¥
èªçºçãªã¬ãã¥ãŒ
WarmZilla ããã®åç
Hi,
Thank you for your wonderful review!
Weâre so pleased to hear you received amazing service and truly appreciate your recommendation.
If you ever need anything in the future, weâre here to help.
The best boiler experience Iâve had x
2026幎2æ11æ¥
èªçºçãªã¬ãã¥ãŒ
WarmZilla ããã®åç
Hi,
Wow â thank you! Thatâs fantastic to hear.
Weâre delighted that this has been the best boiler experience youâve had. It means a lot to the whole team.
If you ever need anything in the future, weâre always here to help.
Brilliant service couldn't ask forâŠ
Brilliant service couldn't ask for anyone better 10/10 recommendation!!!
2026幎2æ11æ¥
èªçºçãªã¬ãã¥ãŒ
WarmZilla ããã®åç
Hi,
Thank you so much for the amazing feedback!
Weâre absolutely delighted to hear you couldnât have asked for better service â 10/10 and a recommendation really means a lot to us.
We truly appreciate your support!
Absolutely brilliant service from startâŠ
Absolutely brilliant service from start to finish! I ordered a new boiler on Friday and it was installed just three days later. The installation took a little over two hours and was completed perfectly with no issues at all. Any enquiries I had before and after purchasing were answered straight away, which was really reassuring. Fast, professional, and hassle-free - I couldn't be happier and would highly recommend them!
2026幎2æ9æ¥
WarmZilla ããã®åç
Hi Sammy,
Thank you so much for taking the time to leave such a fantastic review!
Weâre delighted to hear you were happy with the speed of the installation and that everything went smoothly from start to finish. Itâs great to know our team was able to answer your questions promptly and make the whole process hassle-free.
Your recommendation really means a lot to us â thanks again for choosing us!
WarmZilla ããã®åç
Hi Stewart,
Thank you very much for your kind words.
Weâre really pleased to hear you were happy with the service and found everything professional.
We truly appreciate your support and hope to work with you again in the future.
The engineer cleaned out the grit fromâŠ
The engineer cleaned out the grit from the compress unit, something which had not been done before
He also explained the settings for manual as opposed to auto giving us better control of our heating.
Excellent . Thank you
2026幎2æ3æ¥
WarmZilla ããã®åç
Hi,
Thank you for your excellent feedback.
Weâre really pleased to hear that the engineer was able to clean out the grit from the compressor unit and explain the manual versus auto settings clearly. Itâs great to know this has given you better control over your heating. Weâll be sure to pass your kind words on to the engineer.
Thank you for taking the time to leave a review â itâs much appreciated.
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