WarmZilla Avis 1 997

TrustScore 4.5 sur 5

4,5

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Lisez les avis des autres

Noté 5 sur 5 étoiles

Super quick. Kept informed. The engineer (Marcos) was outstanding in every way. Professional, polite, helpful, patient and highly skilled. Incredible how much he achieved in less than 2 days and le... Voir plus

L'entreprise a répondu

Noté 5 sur 5 étoiles

First time needing a new boiler and lots of companies to choose from. Warmzilla promised a smooth process and definitely delivered. Their chosen engineer Richard was knowledgeable, clean working... Voir plus

L'entreprise a répondu

Noté 1 sur 5 étoiles

Reported broken boiler Wednesday morning 48hrs later no contact made at all not to mention having an engineer booked. So with no joy water since Tuesday and no light of having this fixed anytime. noon... Voir plus

L'entreprise a répondu

Noté 5 sur 5 étoiles

A company that gets customer service. If only all companies were like Warmzilla. Just made my second major purchase with them of air con having bought a boiler off them before. I also have a boiler co... Voir plus

L'entreprise a répondu

À propos de l'entreprise

  1. Fournisseur de chaudières
  2. Borne de recharge pour véhicules électriques
  3. Ingénieur gaz
  4. Service d'installation du gaz
  5. Gazier
  6. Fournisseur de chauffage

À propos de WarmZilla

Écrit par l'entreprise

Promotional GIF
Click, pick, and we fit your perfect boiler!
Manufacturer's Guarantee
Get up to 10 years guarantee on your new boiler for added peace of mind.
Workmanship Guarantee
As well as getting a manufacturer's guarantee of up to 10 years, we also offer a 1-year workmanship guarantee on your installation.
Choice of Brands
We supply and fit models of Worcester Bosch, Ideal, Alpha, Viessmann and Vaillant boilers.

Do you need a new boiler? If yes, then please click the 'Get Boiler Quote' button above to get your quote within a couple of minutes.

We can supply and fit boilers, EV chargers and smart home products. We can also provide home covers for peace of mind.

The price we quote is FIXED and NOT an estimate which is not subject to change. No small print, no hidden extras - only great value for money.

Once you’ve chosen your product, you can then choose an installation date that suits you.

Buy your new home heating or smart home products easier and cheaper with WarmZilla. We are the UK's leading experts.

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.

Coordonnées de contact

4,5

Excellent

TrustScore 4.5 sur 5

2 k avis

5 étoiles
4 étoiles
3 étoiles
2 étoiles
1 étoile

A répondu à 100 % de ses avis négatifs

Répond généralement dans un délai de 2 semaines

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Noté 3 sur 5 étoiles

Opentherm Veissmann 100W

**UPDATE: We have managed to have a visit by an engineer (arranged within days) to connect up Opentherm and it is all working well. Considering this and the previous issue where the sub-contractor didn't do the job to my expectations, and the fact that the sub-contractor misled myself and the Warmzilla customer service - I will keep the rating at 3 stars. I do have faith that Warmzilla will improve on their Opentherm installations and hopefully sub-contractors tarnishing their reputation will not be used again. The only thing that I am waiting for is the boiler warranty documents - I hope to receive them soon. **

**EDIT: Rhys is looking to get this rectified and the errors are being rectified. Rhys's response is really encouraging and they seem really keen to fix the issues. I have revised the star rating since. The issues of the customer service knowledge has been refreshed, so this shouldn't happen again. **

I ordered a Veissmann 100W Combi to take advantage of the 12 year warranty along with the great reviews. I have my own smart controls that are Opentherm compatible (previous boiler wired up for opentherm), so I selected reconnect the thermostat in the ordering process.
Warmzilla were initially very helpful and proactive. Although the installation date had to be moved, it wasn't too big of an issue for me.

On installation day, a third party contractor showed up and I explained at the time that I want to retain Opentherm connections to the boiler.

At the end of the install, the engineer was packing up and didn't mention the connections until I asked if Opentherm was operating. He responded that he couldn't do it, and to my surprise didn't even know what open therm does. He made up some story about a special connection, but it turns out they just needed a £1 cable to connect it all up to the two terminals on the thermostat and the boiler. The engineer left, with the boiler in on/off configuration.

I noticed that the engineer had thrown a load of rubbish to obscure areas of the attic space and failed to reconnect the loft ladder. There was also a scattering of suitcase thrown across the place - the least of my issues.

I reported the issue to Warmzilla, but the response has been so slow. It had taken a week to contact the installer to only receive some made up story that the thermostat is not opentherm compatible from the installer- despite being connected to it before. I've also received false information from Warmzilla about veissmann claiming that the maximum efficiency of the boiler can be achieved in on/off configuration - Just google 'Veissmann Opentherm' and they have a web page devoted to the benefits in increased efficiency.

I am now getting frustrated that the company is not offering a solution to the issue. It's an easy fix, probably 20 minutes work with a £1 cable.

So far, I have rejected to release the interest free finance to Warmzilla and will continue to do so until this is resolved and the 12 year boiler warranty is registered.

They need to improve their customer service response time and test their installers. iheat, heatable etc has plenty of information about opentherm and the benefits, I am regretting my decision to go with warmzilla. The one star is down to both the installer and warmzilla trying to mislead me on the benefits of opentherm and poor communications after installation.

10 novembre 2025
Avis spontané
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Réponse de WarmZilla

Hi Andrew,

Thank you for taking the time to provide detailed feedback. We sincerely apologise for the issues you experienced during and after your boiler installation. We completely understand your frustration regarding the Opentherm connection and the delays in our response.

We’re pleased to hear that Rhys has been able to engage with you and that the errors are being addressed. Please rest assured that we are committed to rectifying the remaining issues promptly and ensuring your boiler is set up correctly for Opentherm operation.

We greatly value your feedback and your patience as we work to resolve this. Our goal is to ensure your experience ends on a positive note and that you can enjoy the full benefits of your Veissmann 100W Combi and warranty.

Noté 2 sur 5 étoiles

Caused more issues than help

Caused more issues than help - the only reason they get 2 stars is because of their customer service response times (shout out to Josh for his persistence)

- Their contractor arrived much later than estimated on the day, with no updates
- Their contractor caused our wiring to smoke and continued to do so despite tripping the electrics several times, we were later told by a serviceman sent by the boiler manufacturer that we were lucky a house fire did not occur
- Their contractor failed to come prepared with basic materials, using our own cement instead
- This first installation left us without heating and a broken boiler despite being brand new. It was left non-functional for eight days as a result of their contractor frying the circuit board of a brand new boiler
- Two repair appointments were arranged by Warmzilla in between the first failed installation and the fix, one where no one turned up so we were left waiting, and another that was cancelled less than 24 hours before.
- Warmzilla claimed we had to take it up with the manufacturer directly as it was under warranty. When the manufacturer sent someone to look, they showed us the fried circuit board (thanks to Warmzilla's contractor) which meant the boiler was not faulty.
- It has taken almost 7 weeks to receive the gas safety certificate and warranty, supposedly a timeline outside of their control

Warmzilla eventually repaired the boiler and after some negotiation received compensation in the form of 11% of the price we paid, but it was so much hassle, back and forth, re-arranging plans/working arrangements after Warmzilla did not stick to their appointment dates.

The only reason there are stars in this review is because the customer service was quick albeit painful and stand-offish at times.

2 octobre 2025
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Réponse de WarmZilla

Hi,

Thank you for sharing your feedback.

We acknowledge that some aspects of the installation did not go as smoothly as planned. However, we believe the review may not fully reflect the efforts made to resolve the situation.

We have provided compensation for the issues you experienced and hope this helps address your concerns.

Thank you again, and we wish you all the best moving forward.

Noté 5 sur 5 étoiles

Great service

Great service, fast, timely
Great follow up support

16 novembre 2025
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Réponse de WarmZilla

Hi,

Thank you for your kind words!

We’re thrilled to hear you found our service fast, timely, and that our follow-up support was helpful.

We really appreciate your feedback!

Noté 5 sur 5 étoiles

Worcester oil combi boiler

Excellent service from getting the quote to fitting .

5 novembre 2025
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Réponse de WarmZilla

Hi,

Thank you for your feedback!

We’re delighted to hear you had an excellent experience from the quote right through to the fitting.

We really appreciate your support and kind words!

Noté 4 sur 5 étoiles

Thank you Warmzilla!!!

I was kept informed every step of the way by the warmzilla team from the beginning to the day my boiler was fitted.
Although there was a little hiccup with the scheduled date for the boiler installation, it was worth the wait and the gentleman who came to install the boiler was very polite and professional, cleaned up afterwards and left us in a very good mood. I will definitely use them again and will strongly recommend their products and services😊.

14 novembre 2025
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Réponse de WarmZilla

Hi Juliet,

Thank you so much for your thoughtful feedback!

We’re delighted to hear that, despite the slight scheduling hiccup, your experience with our team and the installation went smoothly. It’s wonderful to know our engineer left such a positive impression and that you’re happy with your new boiler.

We really appreciate your recommendation and look forward to working with you again in the future!

Noté 5 sur 5 étoiles

Excellent service provided.

Excellent service provided by this company when installing a new boiler.
Questions were replied to very quickly via emails with Josh.
Excellent communications before and after the install.
Day of install went perfectly, with no issues. Highly recommended.

7 novembre 2025
Avis spontané
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Réponse de WarmZilla

Hi John,

Thank you so much for your kind review!

We’re delighted to hear that you were happy with the service, communication, and smooth installation process. Josh and the team really appreciate your feedback. It was a pleasure completing your boiler install, and we’re thrilled to have earned your recommendation.

If you ever need anything in the future, we’re always here to help.

Noté 5 sur 5 étoiles

After contacting worcester bosch fast…

After contacting worcester bosch fast track for a new boiler. Warmzilla got in touch to arrange installation. Engineer was brilliant, arrived on time and left no mess

11 novembre 2025
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Réponse de WarmZilla

Hi,

Thank you for taking the time to share your experience!

We’re glad the process from purchase through to our installation went smoothly. It’s great to hear your engineer arrived on time and kept everything clean — we’ll be sure to pass on your kind words.

If you need anything in the future, we’re always here to help!

Noté 5 sur 5 étoiles

New Boiler

Ordered a new oil boiler from WarmZilla. Absolutely great company to deal with. Great communication throughout the process & a brilliant professional job installing the New boiler from Kevin the engineer. 1st class service all round. Would highly recommend WarmZilla if you’re looking for a new Boiler.

10 novembre 2025
Avis spontané
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Réponse de WarmZilla

Hi,

Thank you so much for your fantastic review!

We’re delighted to hear that you found the process smooth and communication clear from start to finish. Kevin will be thrilled to know his installation work made such a positive impression. We truly appreciate your recommendation and are glad you’re happy with your new oil boiler.

If you ever need anything in the future, we’re always here to help.

Noté 5 sur 5 étoiles

Roland went above and beyond on my uk…

Roland went above and beyond on my uk radiator installation. Roland was very thorough in his work ethics, very knowledgeable, and did a fantastic install, thank you very much. I would highly recommend

6 novembre 2025
Avis spontané
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Réponse de WarmZilla

Hi,

Thank you so much for your wonderful feedback!

We’re thrilled to hear that Roland went above and beyond during your radiator installation. His thorough approach, knowledge, and high-quality workmanship are exactly what we aim to deliver. We’ll make sure he receives your kind comments.

We truly appreciate the recommendation and are always here if you need anything in the future.

Noté 5 sur 5 étoiles

New boiler

Good price , fast delivery and professional engineer

7 novembre 2025
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Réponse de WarmZilla

Hi Bianca,

Thank you for your review!

We’re glad you were happy with the pricing, quick delivery, and professional service from our engineer.

We appreciate your feedback and look forward to helping you again in the future.

Noté 1 sur 5 étoiles

AVOID WARMZILLA FOR BOILER SERVICING. YOU HAVE BEEN WARNED.

I took out a contract with Warmzilla for boiler cover - servicing and repair. I was told I had to wait 2 weeks before my annual boiler service could be done. So, that was fine and understandable. So after 2 weeks I contacted Warmzilla to arrange the boiler service. A date - a Monday - was fixed but the engineer phoned up at nearly 5pm that day to say he could not make it and he would contact me later to get another appointment later that week. By 4pm that Friday NO CALL from the engineer. So I contacted Warmzilla direct. They made lots of excuses basically saying that they employ contractors to do the servicing and repair work, have little control over which jobs such contractors prioritise and contractors would obviously prioritise more lucrative boiler breakdown work. Anyhow I was promised that a new date would be arranged. BUT NO SUCH DATE WAS ARRANGED even a month later. I therefore cancelled the contract. AVOID WARMZILLA FOR BOILER SERVICING!
UPFATE: OK. So a few minutes after my review went live I received a personal phone call from the Operations Director (and also one of the company's founders) of Warmzilla apologising for the service I had received. He also said that the information about contractors deprioritising service work was incorrect and he would follow up internally with the staff members concerned and look at customer service training. He did accept, however, that my experience is true and was a failure in this instance. So. I am grateful the Ops Director himself followed this up and it shows they obviously do care about service. But I cannot deny whst my experience was.

7 novembre 2025
Avis spontané
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Réponse de WarmZilla

Hi,

Thank you for sharing your experience.

We sincerely apologise for the delays and the poor communication you experienced with your boiler service. We fully acknowledge that your experience fell short of the standard we aim to provide.

We’re committed to ensuring that incidents like this are addressed internally and do not happen again. Your feedback is invaluable in helping us improve our service, and we’re sorry that it impacted your trust in us.

Noté 5 sur 5 étoiles

Recommended service.

Arrived on time. Very polite and nice to talk to. Knew what he was doing and explained everything. Recommended.

7 novembre 2025
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Réponse de WarmZilla

Hi Mr Walsh,

Thank you for your kind words!

We’re delighted to hear our engineer was polite, knowledgeable, and able to explain everything clearly.

We really appreciate your recommendation!

Noté 5 sur 5 étoiles

Happy with the service and good…

Happy with the service and good communication

6 novembre 2025
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Réponse de WarmZilla

Hi

Thank you for your feedback!

We’re glad to hear you were happy with the service and communication. We really appreciate you taking the time to share your experience!

If you need anything in the future, please do let us know.

Noté 5 sur 5 étoiles

Great comunicación with Josh

Great comunicación with Josh. He found me an appoitment despite this being their busiest period, regularly reminded me of timing and even phoned me back within 10 mins of sending a query.

5 novembre 2025
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Réponse de WarmZilla

Hi Simon,

Thank you so much for your lovely feedback!

We’re so pleased to hear that Josh was able to find you an appointment during such a busy period and kept you updated throughout. Providing prompt and clear communication is something we really value, and it’s great to know Josh delivered that for you. We’ll be sure to share your kind words with him!

Thanks again for choosing us!

Noté 5 sur 5 étoiles

Fast efficient service

Everything was quick delivery fast installation fast the engineer guy was simply great very efficient and works tirelessly hard thanks for everything 100%

29 octobre 2025
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Réponse de WarmZilla

Hi Colin,

Thank you so much for your fantastic review!

We’re delighted to hear that your delivery and installation were quick and efficient, and that our engineer made such a great impression. We’ll be sure to pass along your kind words to the team — they’ll be thrilled to know their hard work is appreciated.

Thanks again for choosing us!

Noté 1 sur 5 étoiles

Very poor service on all levels.

Failed to turn up for 3 different half day appointments. No notification that this may happen on each occasion. I had to chase up on each occasion. Boiler cabinet left dirty - grubby fingers all over white paint and not put back in place correctly. Wedges of what looks like thick card used to hold in place. Screws not utilised. No comment from service engineer to say it was an issue. No paperwork left or any notification to say it would be emailed. Very unsatisfactory. Unfortunately can't give 0 stars or would have. Customer service very good at saying they're sorry.

5 novembre 2025
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Réponse de WarmZilla

Hi,

We’re very sorry to hear about your experience and sincerely apologise for the inconvenience caused. This is not the standard of service we aim to provide. We understand how frustrating it must have been with the missed appointments and issues with the boiler cabinet. We take your feedback seriously and will be reviewing this with our team.

Noté 5 sur 5 étoiles

Easy contact

Easy contact, quick respond to questions. Lovely customer service and engineer. Whole process was quick and smooth.
Availability to spread the costs with 0% interest.

3 novembre 2025
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Réponse de WarmZilla

Hi Anna,

Thank you so much for your wonderful feedback!

We’re thrilled to hear that you found our team easy to contact and responsive, and that both our customer service and engineer made the process smooth for you. We’re also glad the 0% interest payment option helped make things easier. We really appreciate you taking the time to share your experience!

Please let us know if you need any assistance.

Noté 5 sur 5 étoiles

Excellent service

Josh made this rather complicated experience seem so smooth. He ensured I was kept up to date at all times and communicate with great understanding and timely responses. Juggling between myself, state agent and tenant. 10/10 service Thank you Josh.

23 octobre 2025
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Réponse de WarmZilla

Hi Anita,

Thank you so much for your kind words!

We’re delighted to hear that Josh made the process smooth and stress-free for you. Clear communication and excellent service are top priorities for us, and it’s great to know Josh delivered on both. We’ll be sure to share your feedback with him — he’ll really appreciate it!

If you require anything, please do let us know.

Noté 5 sur 5 étoiles

Efficient service..

Efficient service... friendly and and professional from start to installation...I was made to feel a valued customer.. well done 👍

22 octobre 2025
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Réponse de WarmZilla

Hi,

Thank you so much for your wonderful feedback!

We’re delighted to hear you had such a positive experience from start to finish. Our team takes great pride in providing friendly, professional service and making every customer feel valued.

We truly appreciate your support and look forward to helping you again in the future.

Noté 5 sur 5 étoiles

Had my boiler installed over 17 months…

Had my boiler installed over 17 months ago. Recently had a problem with my remote and was provided excellent Customer Services (Caryl) who sorted my problem over the phone. Plus even followed up next day by Josh.

28 octobre 2025
Avis spontané
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Réponse de WarmZilla

Hi,

Thank you so much for taking the time to share your experience!

We’re really pleased to hear that Caryl was able to resolve your issue so efficiently and that Josh followed up to make sure everything was running smoothly. It’s great to know your boiler is still serving you well after 17 months!

We truly appreciate your kind words and continued trust in our service.

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