WarmZilla Anmeldelser 

Aziz was very pleasant, arrived nice and early, very respectful. Job completed quickly and efficiently

Easy to book and friendly staff to arrange service.
Engineer made contact before arriving to provide time of arrival was friendly, courteous and professional and did high quality job.

Having my new boiler installed was such a quick and easy process. It took less than a week, 5 days in-fact, from placing my order to having it put in.

The communication from Warmzilla was perfect from day one. I was contacted and told exactly what was going to happen and when.

The installers showed up within the timeframe and were very kind and joyous. They respected me and my property, which was very nice.

They started the preliminary work whilst we awaited delivery of all materials and everything fit together like a jigsaw.

When there were any hiccups or matters to mention, the installers explained everything to me and answered any questions I had; such a change to experience honest and genuine people.

The installation was completed in one day and now I get to enjoy my new boiler.

Very pleased and would definitely recommend.

Survey was ok but after placing my order was told the price needed to be increased by 300. That could be a genuine mistake or sales tactics, probably the latter.
The installation was a car crash, engineer was not aware of the job before he started unboxing. Made a lot of mess, didn’t put any protection on the floor, took a week to dry out as he took the old boiler out whilst full of water and it went everywhere. Various problems like installing boiler and the door couldn’t close, at one point we were expecting to have no water for a few days as it seemed to be going so badly. To cap it all I’ll be paying a roofer/builder to repair the mess of a hole left in the roof. Packing a hole made too large for the flu with some old insulation material and then just putting for roof sealant is cowboy at best. I have photos of this going in. Other things list screwing the flu bracket into the mortar not the brick too….

Great service and easy installation. Highly recommended!

UPDATED:
This is an updated review post completion of our boiler installation.
Our boiler was supposed to be installed on Friday. The engineer installing the boiler was unable to complete it due to the flue provided being too short. He told us he had contacted Warmzilla about this but had not heard back yet (Warmzilla has suggested he never contacted them).
I tried to reach out through a number of avenues on the Saturday to get this resolved and a new flue sent. I had no reply on the phone numbers provied on their website, the live chat (according to Warmzilla there was a fault with this on the morning), email, Whatsapp nor their social media accounts.
This led me to put up a 1 star review on here for poor customer care, upon this I then recieved an email from them with no clear resolution (being told this would be dealt with on the Monday) and asking for the review to be taken down. The tone of the email was rude, putting a lot of the blame on myself for ringing the wrong number (the number they suggested I should have rang is not one available on their website nor emails and one I had only recieved one phone call from) and only got worse when I said I would not remove the review until the matter was resolved. I was accused on writing factually inaccurate review that was incorrect and misleading.
On the Monday I hadn't heard anything from them so at 11am I reached out to find out how they would resolve the situation (given we had not been without hot water all weekend). I was told an engineer would be coming out after 3pm that day.
The engineer did not turn up as expected so I had to reach out to them again. At this point I got through to Rhys, who I have to say was one of the few pleasant parts of this experience. He chased the engineer and found out there had been an emergancy which held him up. Both Rhys and the engineer were extremely helpful in resolving our issue and we were able to get the problem resolved that night. The engineer worked late into the night to complete this for us (leaving around 10pm) and I was very grateful for his dedication to this.
I am thankful the work is complete and grateful to Rhys and the engineer for their hard work and dedication to helping. I might suggest that they look into their policy on how complaints are intially dealt with as this very much overshadowed our experience and left a bad taste in the mouth, particuarly as I made them aware I am 6 months pregnant and was finding the situation very stressful.

These guys are superb - our install was super challenging between Reiss at Warmzilla and our installer they managed 2 separate installs, just weeks after our order. So thank you, super impressive service. 👏🏻👏🏻👏🏻

The installer was the best part of the job. Truly a gent to work with. Top stars for Aziz. Further to this the boiler arrived at the same time as the installer. Thank you. It was absolutely brilliant, and I am over the moon.

Update as of 02/09/26. Worcester Bosch had to send an engineer out, due to a leak. Thereafter, I had to run a isolation test, which confirms that there is a leak in the radiator heating system. Hot water is fine. WarmZilla are requesting me to find a plumber which I feel is unfair, after spending multiple thousands of pounds. Will update this post as and when new information comes to light. For the moment, I have hot water, but no heating. (Therefore, rating amended from 5* to 1*)

Update as of 03/09/26. Remedial works had to be completed, however, WarmZilla disagreed to reimburse for these works.

Spoiler alert: If you get a boiler fitted, expect to pay for further remedial work.

Would be a 5* review, but customer service is some-what lacking. A £4000+ boiler installation wasn’t worth a £100 refund for the remedial works I had to pay, out of my own pocket. Beware, shop around and also look at Boxt!

Annual boiler service. It would have been 5 stars but the engineer never called with a time as promised. He still turned up though, was courteous and completed the job quickly.

No big message needed just a great service as usual.
Had a boiler service and the engineer was first class and very friendly.

I completed the assessment for an aircon install on the company’s website and, based on my responses, was instructed to continue the enquiry via WhatsApp as it isn’t as straightforward.

In my experience, the communication was not what I would expect from a company of this size. I was asked to send “videos they can view”, but no clear guidance was given on what was required (for example, whether they wanted footage of the inside, outside, or both). After I sent the requested videos on Saturday, I did not receive a response until Thursday, despite chasing for an update.

When they eventually replied, I was asked to send all of the same information again by email so they could review it further. This made the process feel repetitive and disorganised, and despite the time I invested, I never received a quotation.

Based on my experience, I found the communication unprofessional and the customer journey frustrating. Unfortunately, I cannot recommend the company.

We recently had air conditioning installed by WarmZilla and the whole experience was really positive from start to finish.
We got a few quotes before deciding, and WarmZilla came in with the best price for the system we wanted. After doing quite a bit of research and speaking to a few companies, we also felt they were the best installers for the job, and they certainly lived up to that.
The installation team turned up when they said they would, were polite, professional, and clearly knew what they were doing. The quality of the installation is excellent, everything was finished neatly, and they left the house spotless. They also took the time to explain how the system worked before they left.
The customer service was excellent throughout as well. Any questions we had were answered quickly, and we were kept informed every step of the way, which made the whole process really straightforward.
Overall, we're delighted with the installation and wouldn't hesitate to recommend WarmZilla. Great price, excellent workmanship, and first-class customer service from start to finish.

*** EDIT ****

After my original review, Warmzilla got in touch, offered me an upgraded system at no extra charge, and brought the installation date forward — the install itself went really well, and we are really pleased with how it was handled.

Most companies wouldn't even bother responding to a negative review, but these guys went above and beyond to resolve the issue, and I would absolutely recommend them.

Seamless experience from start to finish. Well informed throughout and the installion cattered to my exact requirements. Would buy from again.

Boiler checked and serviced professionally.

Our second boiler purchase and installation from Warmzilla. Overall an easy pleasant experience. Sales team and engineers were really helpful. We have a maintenance contract with Warmzilla as well and when Craig the installation engineer fitted the boiler he also sorted out a problem we had with the zone value. All in all really pleased. First class service.

My wife and I had been planning to install air conditioning at our home for a while, so I spent some time researching companies in West Yorkshire.
I looked at a few but decided to go with Warmzilla because the whole process was really simple. Getting a quote was easy, I answered a few questions about what I needed, was given three options to choose from, and the price was fixed for the installation. After choosing the units I wanted, I could book an installation date and choose a payment option. Everything up to that point was quick, easy and a very good experience.
The road started getting a bit bumpy after I booked the installation. My original Thursday appointment had to be changed because of a delay with the delivery, so I moved it to a Saturday. So I lost one day of my Hollidays I was booked for Thursday install
I also wanted the pipework chased into the walls for a cleaner finish. Warmzilla told me they do not carry out surveys and that the installers work from the photos customers upload. I wanted to speak to someone about this, so I requested a call. They rang me the next working day and agreed that the installer would contact me. That did not happen until I chased it up myself, and I later found out the engineer had been on holiday. We ended up having a video call instead and he confirmed where I should chase the walls.
I then took another day off work to prepare everything before the installation. On the Friday evening I received an email saying the electrician was off sick, but the air conditioning engineer would still come and finish most of the work. The next morning I got a text from the engineer saying he was off sick too. That was probably the most frustrating part of the whole experience.
My house was covered in dust sheets, from wall chases and left for ac installation, as its lived house
On Sunday I received a email from Rhys, the Installation Director, who apologised and promised to get everything sorted.
On Monday I received call from Warmzilla and they try to push install for nearly 1 month, which I not agreed and asked call from more senior staff, I have call back from same guy who's emailed me on Sunday, and after explaining my situation, including the fact that my house was covered in dust sheets because I had already chased the walls, Rhys really stepped in and did everything he could to help. He arranged another contractor to come the following Monday and they completed both the air conditioning installation and the electrical work. Rhys also kindly offered a free service next year to make up for all the hassle, which I really appreciated.
The other issue was having to chase the paperwork, which took about four weeks.
Overall it was a stressful few weeks and communication could definitely be better. It would also help if customers had dedicated person looking after their installation, instead I don't know who's responsible for that install, luckily like mentioned I have email from Rhys and I able to ask question directly to him
In the end, though, everything works perfectly and I am happy with the finished installation. Despite the problems, I would probably still choose Warmzilla again because when things went wrong they did make the effort to put them right. I hope they take this feedback on board because there is definitely room for improvement, especially with communication and keeping customers updated.

We went with Warmzilla in December for our boiler service. Have left 2 previous 1 star reviews which they asked us to remove while they sorted issues. First boiler service and they did not even take the front off the boiler so not convinced it was serviced. Arranged for someone else to come out who did not turn up. Finally got the service done. Then had an issue with our boiler and it took 3 months for them to send someone out. We had a new boiler installed last week and can’t fault the guy who did it. Would give 5 stars for him and the boiler fitting. Not sure I believe all the positive reviews as they ask people to remove negative reviews while they sort out the issues. Not sure if we will renew in December based on our overall experience. This is an honest review base on our overall experience. If you get a good tradesman to come out it’s fine but not all are good and the timescales are not great. Yes we had heating and hot water so not expecting same day or next day check but three months is far to long to wait for a boiler check when you report an issue, they are cheap and if you get the right tradesman it’s worth the money but there are issues and delays