WarmZilla Reviews 

Efficient and friendly.

The only slight issue was after uploading the photos of the old boiler location and plumbing to the website, there seemed to be the inability to pass said photos on the to engineer.

I placed a finance order for an air conditioning system worth approximately £6,000 on 12th August 2026, with an installation date officially booked for 6th October 2026.
Between placing the order on 12th August and 5th October, there was zero proactive communication from Warmzilla, other than automated emails repeatedly requesting installation photos that I had already submitted. On 3rd October, I attempted to get an update via Live Chat, but my messages were ignored on two separate occasions during the day.
With the installation scheduled for 6th October, I took it upon myself to contact customer service on 5th October to confirm the appointment. Only then was I informed that the installation would not be going ahead due to material shortages. No one had reached out to inform me of this delay prior to my live chat contact, and I have still not been given a revised date for when the work will actually take place. What makes this even more frustrating is that Warmzilla continued to offer installation dates around my exact timeframe to new customers despite these known material shortages. I would cancel however now it is looking like late 2027 that other companies will be completing installations so im somewhat trapped with Warmzilla!
While supply chain delays can happen, failing to inform a customer until less than 24 hours before a major £6,000 installation—and only because I chased it up myself—is completely unacceptable. To prepare for the work, I spent 3 days of my annual leave clearing out and dismantling my living room and bedroom, and booked a 4th day off for the installation date itself. My home is now in complete disarray with no clear timeframe for when this will be resolved.
As it stands I can not state this more AVOID WARMZILLA.

The engineer arrived promptly in time, did the inspection and service very efficiently and properly. I will recommend him for everyone I know, and definitely would like him to come for service next year.

Just had a wonderful customer experience from Warmzilla.
From making my service appointment ; customer support was very efficient called Wednesday got appointment for Friday . Followed up with email confirming date and time slot.
Field Engineer who carried out my service was excellent, just oozed confidence that he know what he was doing and my boiler was going to receive a great service.
Thank you warmzilla for employing great people.

Competitive quote, better finance options than rivals and no timeline issues for swift completion.

Update to 5 stars because after leaving the review I had a call from Warmzilla with an apology and concerns that this has happened and was well below what their service should have been,they have sorted this problem out with a satisfying result so I have updated to 5 stars.
Fourth service from warmzilla,last 3 no problem,this one has been a nightmare,bearing on mind this is under their prepaid service plan,been trying to book a service since 25th August,messaged them with dates we were away,never heard anything then was told it had gone into spam folder so was missed,given a date and engineer could come,it was a date that I had already told them we were away from home,told them again we weren't available and never heard anything,contacted again after 2 weeks and was told I would have a date by the end of the day again never heard anything again,had to contact them 3 times again before we actually got a date, that 1 star is for warmzilla,as for the engineer Aziz Bargit it woul be 5 stars plus,very efficient pleasant gentleman,cleaned a filter and found a slight air leak and fixed it,would highly recommend him as a boiler engineer.

During boiler installation damage was cause to our newly decorated wall, the installer decided to go up a ladder on the outside or the building to remove the flue and in his words he said he had to smack the S**t out of it, with a hammer. When I complained about the damage they told me to send photos of the damage, then to arrange quotes. The cheapest quote sent through was £600 for the damaged wall. They then said they were not going to reimburse me for the damage because I had signed a satisfaction survey! I asked for proof of this and recieved a PDF computer generated form with fraudulent questions answered saying I was happy with the work and installation and because I had signed this they were only going to offer £100. I opened a claim with finance company to recover the monies, we agreed on warmzilla to reimburse me £300. They then stalled once again and would nt answer emails, once again the finance company were contacted and I received my money. This whole mess was caused by Warmzilla they made me wait months and I had to fight hard to get a result, they are an untrustworthy company and do not recommend.

engineer arrived in time and the service was professional.

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. quality of service is as friendly as ever and their communication is nothing short of 5 stars. they helped me with all my questions as i wasn't sure about getting air con at first and the benefits of it but they didn't make me feel i was ever asking too much and even beat a cheaper quote i had from another company. process was straightforward and easy that even someone who isn't as technical like me could do it. Another seamless experience from the team and installer was wonderful and respectful of our home. I will recommend to anyone

I did not received the call to get a time window so we missed the first appointment, but we solved the problem in the next days. The Engineer was helpful quick and really friendly.
He also advice to ask for a carbon dioxide detector that should come with the new boiler.

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 day. They even offer a next-day delivery and installation option! Great company, thank you so much.

Nothing wrong with actual service and the company was very helpful.
Unfortunately for the 2nd year running , the booking date was not honoured and no call received to postpone visit.
It’s just the aggravation of waiting in and then having to chase up Warm
Zella the next day.
We need additional parts that have been identified by the engineer, so we will see how this goes when rebooked

Great experience from start to finish. Caryl was amazing with her customer service and the engineer was professional and helpful. Thank you so much! Would definitely recommend this company.

Abbi in customer service was really helpful and knowledgeable. The engineer was polite and time efficient. Would recommend this company to anyone.

I had a boiler service carried out. Really helpful and answered every question I had. Really happy with the service

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 ensure it suited my needs. The Engineer was polite and friendly and kept me updated on each step. highly recommend this compay

I had a boiler installation , work carried out was very speedy and professional. I would highly recommend

I had air conditioning installation and prices are unmatched and the service they provide is amazing from start to finish wouldn’t recommend anyone else

Great prices, kept fully informed about my boiler service. Friendly and professional would highly recommend