WarmZilla
Experiences & Reviews
WarmZilla is a UK heating company that supplies, installs and services domestic boilers. It operates an online booking and quotation flow and dispatches surveyors and installation engineers for on-site work. This summary helps consumers find independent review-based information about WarmZilla's installation, service and communication performance.
Overview & Key Metrics
Our Analysis
Service quality
Reviewers commonly report punctual, professional engineers and smooth installations; one review described a wrong unit being delivered but the issue was corrected.
Value for money
A small number of reviewers explicitly mention competitive pricing and satisfaction with cost; the sample for price comments is limited.
User experience
Customers report a simple online form and a clear survey process with fast scheduling; only a few reviews discuss the digital experience.
Product quality
Many reviews note boilers were fitted and working on completion, including successful upgrades from old units and problem-solving for tricky installs.
Communication
Multiple reviewers describe helpful phone contact, regular updates and being kept informed about appointments and progress throughout the process.
Overall experience
Most reviewers give an overall positive verdict, describing the end-to-end process as efficient, stress‑free and worthy of recommendation.
Our Independent Methodology
How we analyse customer reviews without bias
Data Collection
We analyse public reviews from verified platforms like Google, Trustpilot, and Facebook.
AI Analysis
Our AI detects patterns in genuine customer experiences without modifying content.
100% Independent
Zero company influence. No payments, no bias — just real customer voices.
Always Current
Updated regularly with the latest reviews and customer feedback.
Featured Customer Experiences
Representative examples from 21 verified reviews (November 2021 – September 2025).
BOILER
"
We choose the boiler, paid for it, and received regular updates about its development.
We were advised by a phone call that our boiler was ready for fitting, so I set a date.
When the fitter arrived on the scheduled day he informed me that it was not the boiler I ordered but a different one.
This caused some complications for us since we had already paid for the boiler and had to reschedule everything at short notice, which they did a good job and replaced the boiler I ordered.
The boiler was fitted on time and looks excellent.
The engineers were very courteous and friendly, "
Warmzilla , 10 stars if i could
"Having had trouble last year trying to get a reliable person to come service the boiler i decided to go back to where i originally purchased the boile..."
New boiler - perfect!
"Just had a new boiler fitted by Warmzilla. Everything went smoothly from start to finish. Ordering was simple via the website. Installation engineer w..."
Totally stress free boiler replacement.
"From start to finish the Warmzilla experience has been top class. The initial on line survey to choose which boiler would be most suitable was straigh..."
All Customer Reviews
Filtered, experience-based customer reviews from public sources; vague and duplicate submissions removed.
Filter by Rating
Filter by Source
All Customer Reviews
Sources: Trustpilot (20) · Collected.reviews (1) · Quotes shortened · As of: September 2025
Another happy customer
Efficient as ever and nice to have the same engineer ser...
New boiler - perfect!
Just had a new boiler fitted by Warmzilla. Everything went smoothly from start to finish. Ordering was simple via the website. Installation engineer w...
The team was professional
The team was professional, punctual, and very knowledgeable. They explained the pro...
Warmzilla , 10 stars if i could
Having had trouble last year trying to get a reliable person to come service the boiler i decided to go back to where i originally purchased the boile...
Ordered Saturday pm and boiler fitted…
Ordered Saturday pm and boiler fitted by Tuesday a...
Incredibly simple to fill the form and…
Incredibly simple to fill the form and...
Very helpful
Very helpful, discussed, surveyed and helped to select best possible boiler in th...
Great customer service from Josh Day
Great customer service from Josh Day. Keen understand if the situa...
Totally stress free boiler replacement.
From start to finish the Warmzilla experience has been top class. The initial on line survey to choose which boiler would be most suitable was straigh...
Brilliant from start to finish
Brilliant from...
Genuinely might be the best boiler…
Genuinely might be the best boiler company in the country. I had 10+ people tell me the job wasn’t possible due to a flue issue. Warmz...
Very quick and friendly
Very quick and friendly. Ha...
Speedy and reliable
Fantastic service,kept me informed at all stages, and the plumbers w...
Just had it done today
Just had it done today. Great Job - very swift a...
Boiler service
All good no issu...
Great job ..........
Claudiu demonstrated professionalism in eve...
WORCESTER BOSCH Boiler Service
Have had Boiler cover with different providers for the past 40 years. I can honestly say this first service with Warmzills was the most thorough and b...
Engineers very friendly work done to a…
Engineers very friendly work done to a high standa...
Excellent service- highly recommended
Excellent service and kept abreast of all arrangements.. Liam was super helpful. Boiler installed on the agr ed date, the engineer was considerate and...
fantastic service
Fantastic service from initial contact to boiler installation, thank you to Liam i enquired with a few companies online and he was the only person to...
Conclusion
Reviews largely describe WarmZilla as delivering fast, engineer-led boiler installations with clear communication and tidy working practices. Several customers highlight a simple online booking or survey and fast scheduling (for example, ordering one weekend and installation within days). A minority note an isolated operational issue (a wrong unit delivered) that was corrected by the company. If you prioritise prompt installation, engineer professionalism and ongoing communication, these reviews indicate consistent strengths; if pricing or digital UX are decisive, fewer reviews focus on those areas and you may want to compare quotes.