I built a passive house. 21 degrees, fitted the windows and doors, and designed and supplied the MVHR system. These are two different teams, but in both cases, the experience with working with 21 degr... Toon meer
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21 degrees installed my solar system and were great. A year later mice ate some cables and the sent someone out to fix my system within a couple of days which was great service too
Bedrijf heeft geantwoord
Very happy with my experience with 21 degrees - the solar panel setup is working really well for us. They were a pleasure to work with and made it easy to move through the process. The only caveat is... Toon meer
Bedrijf heeft geantwoord
Knowledgeable and keen staff. Fitting triple-glazed windows for the whole house, and they all wanted to get the job done, and didn't look for excuses when things got difficult. I would say the only t... Toon meer
Bedrijf heeft geantwoord
Bedrijfsgegevens
Geschreven door het bedrijf
Our world is changing. We believe now is the time to adapt and so we're pioneering a new future. Our mission is to empower homeowners, architects, and businesses with the knowledge and technology to harness their own sustainable energy and help safeguard the planet. Whether you need a single product or the ultimate Passivhaus, your system needs to be well thought out and designed correctly. We adopt a full-circle approach to provide better performing buildings from a carbon, cost, and comfort perspective to get you the right outcome. Our specialist products and services include renewables such as solar panels and heat pumps, and energy efficient upgrades such as triple-glazed windows and doors, mechanical ventilation with heat recovery (MVHR) systems, and insulation and airtightness products.
Contactgegevens
Verenigd Koninkrijk
- 0808 281 5021
- info@21degrees.com
- 21degrees.com
4,4
Uitstekend
118 reviews
Heeft 83% van zijn negatieve reviews beantwoord
Reageert doorgaans binnen 48 uur
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We have had our heat pump serviced…
We have had our heat pump serviced Friday Mario was the person who did the servicing and I can say he did a magnificent job he was thorough and picked up 2 faults that could have been a major problem in the winter, so a massive thank you,top job no mess left very professional 👏
8 mei 2026
Review zonder uitnodiging
Great service as well as installation
21 degrees installed my solar system and were great. A year later mice ate some cables and the sent someone out to fix my system within a couple of days which was great service too
11 mei 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you for your kind review! We’re really pleased to hear you were happy with both your original solar installation and the aftercare service from our team. Unfortunately, mice do sometimes find their way to cabling, but we’re glad we could get someone out quickly to get everything back up and running for you. Thanks again for choosing 21 Degrees!
I had an emergency leak situation
I had an emergency leak situation. 21 degrees and the plumbing engineer Richard dealt with the matter promptly, and effectively. Richard’s approach and manner was exemplary.thankyou
21 april 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you for your lovely review. We’re sorry to hear you had an emergency leak situation, but we’re pleased we could respond quickly and resolve the issue effectively for you. We’ll be sure to pass your kind comments on to Richard, he’ll really appreciate them. Thanks again for choosing 21 Degrees!
Professional MVHR Service
Professional, friendly and informative MVHR service, excellent.
25 maart 2026
Antwoord van 21 Degrees
Thank you for your kind words! We're really pleased to hear you found our MVHR service professional, friendly, and informative. It was a pleasure working with you, and we’re always here if you need any further support.
First class technical advice
First class technical advice and top quality installation of solar PV for our Church building. The H2-eco team were patient with support while we went though various grant-funding processes and then the roof team were exceptionally hard working in very high temperatures on a hot roof. With reduced grid import and export payments for solar excess our bills are 1/3 of what they were before installation so we are delighted!
30 april 2025
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you for such a detailed and thoughtful review for our H2-eco team! We're delighted to hear how pleased you are with your solar PV installation and the results you're seeing.
We're thrilled to know your energy bills have reduced so significantly - that’s exactly the kind of impact we aim to deliver. If there’s ever anything more we can help with, please don’t hesitate to get in touch.
Great advice, quick service and a quality install of our solar and battery.
Great advice, quick service and a quality install of our solar and battery. Very happy.
20 april 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you for your great review!
We’re delighted to hear you’re happy with the advice, speed of service, and the quality of your solar and battery installation. It’s always our aim to make the whole process smooth and deliver a system that performs exactly as it should.
Really helpful person who serviced our…
Really helpful person who serviced our pump. Polite, helpful and explained things well.
24 april 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
We’re so pleased to hear that our engineer was helpful, polite, and took the time to explain everything clearly.
We’ll be sure to pass your comments on to the team. If you need anything else in the future, we’re always here to help!
Be wary of advice given
First registered with Tesla for the install of a PW3 and EP back in October 2025 and was told they had allocated 21 Degrees as the allocated installer. Having waited a few weeks and hearing nothing, i went back on to retry to see if there was an issue. Again i waited another few weeks but again nothing came from 21 degrees.
Unbeknown to me, 21 degrees Nottingham was the allocated unit but on enquiring with them, i was informed they do not fit the PW3. I asked if i was able to get the York branch to sort which they said yes and provided the number and was told they should be able to.
Having made a call to the York branch, I was given the initial quote that whilst a fair bit more expensive than i was hoping for, the T&C on the cashback offer from Tesla stated i needed to have the work completed buy their recommended installer. With the cashback, it put the price where i was willing to pay.
As i was having a rewire and was wanting the batteries located at the far end of the house to where the consumer unit was, i asked what cabling would be required to have them placed where i wanted them. I was advised incorrectly and ended up fitting a secondary consumer unit and a cable that was not required as the cable went into the consumer unit where it is meant to go straight into the batteries. I don't know what the individual cost was but the electrician stated it would have been around £750 with the labour for both the cable and consumer box.
When the survey was conducted, i was informed that that cable and consumer unit was not required. I naturally hit the roof due to what i had paid to have this installed, i was asked to provide the emails showing what i was informed would be needed and to be fair to 21 degrees; they didn't add any cost onto the cable they then ran for the batteries but that would not have come anywhere near the £750 i had paid so I'm still out of pocket for the bad advice i was given.
Now all installed with no issues and i have just had the refund of £750 approved by Tesla but its still a bitter pill with the money i wasted which is why i can only award 3 stars but i am happy with the install. Just unsure if i would use them again for an ASHP that i will be considering in the future.
19 maart 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you for taking the time to leave such a detailed review - we really appreciate you sharing your experience.
Firstly, we’re very sorry for the confusion and delays at the start of your journey. The allocation between Tesla and our regional teams clearly wasn’t as smooth as it should have been, and we understand how frustrating that must have felt, especially after having to chase things up more than once.
We also want to apologise for the incorrect advice regarding the cabling and consumer unit. That’s not the standard we aim for, and we completely understand why this caused frustration and left you out of pocket initially. While we’re glad we were able to support your case with Tesla and that they approved the £750 refund, we recognise this doesn’t undo the inconvenience caused.
On a more positive note, we’re pleased to hear that you’re happy with the final installation of your Powerwall system and that everything is now working as it should.
Your feedback is incredibly valuable, and we’re already using it to improve how we communicate between teams and advise customers during the early stages of a project.
We completely understand your hesitation about future work, but if you do decide to move forward with an ASHP, we’d really welcome the opportunity to restore your confidence and deliver a smoother experience from start to finish.
If there’s anything further you’d like to discuss, please don’t hesitate to contact us directly.
Best regards,
21 Degrees
Great advice and installation of MVHR system
Good advice and support throughout the whole process from design to installation and commissioning.
The end result is great and very quiet and discrete
14 april 2026
Antwoord van 21 Degrees
Thank you for your kind review!
We’re really pleased to hear that you felt well supported throughout the entire process. It’s great to know the end result has met your expectations, especially in terms of being quiet and discreet, as that’s something we always aim to achieve.
If you ever need any further support or have questions in the future, we’re always here to help.
Thanks again for choosing 21 Degrees!
Antwoord van 21 Degrees
We’re really pleased to hear everything arrived promptly and met your expectations.
If we can help with anything else in the future, just let us know!
Knowledgeable, friendly, and attentive.
I built a passive house. 21 degrees, fitted the windows and doors, and designed and supplied the MVHR system. These are two different teams, but in both cases, the experience with working with 21 degrees is very positive. The guys are knowledgeable and super helpful and have helped us throughout the whole Passive House process. I'd highly recommend them.
31 maart 2026
Antwoord van 21 Degrees
Thank you so much for your kind words and for taking the time to share your experience. It was a real pleasure being part of your Passive House journey.
We’re delighted to hear that both our windows and doors team, as well as our MVHR design team, were able to support you effectively throughout the process. Creating a Passive House is a big undertaking, so it’s great to know you felt well supported every step of the way.
Your recommendation really means a lot to us. Wishing you many years of comfort and performance in your new home!
Very happy with my experience with 21…
Very happy with my experience with 21 degrees - the solar panel setup is working really well for us. They were a pleasure to work with and made it easy to move through the process. The only caveat is they tend to quote high (all-in batteries etc. ), we worked down to what was more reasonable given our situation.
16 april 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you for the great feedback - we’re really pleased to hear your solar panel system is performing well and that you found the process smooth and easy to navigate.
We appreciate your honest comment on pricing too. Our initial proposals are designed to give a complete picture of what’s possible (including options like battery storage), but we’re always happy to refine things to suit individual needs.
Thanks again for choosing 21 Degrees
A good experience
The engineer was on time. He was pleasant and helpful and thoroughly cleaned the unit. Because it was so clean when he arrived, he recommended that the next service be planned for 3 years time.
25 maart 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you for your kind feedback - we’re really pleased to hear you had a good experience.
It’s great to know our engineer was punctual, helpful, and carried out a thorough clean. We also appreciate you maintaining the unit so well; it’s exactly what helps keep everything running efficiently.
Knowledgeable and keen staff
Knowledgeable and keen staff. Fitting triple-glazed windows for the whole house, and they all wanted to get the job done, and didn't look for excuses when things got difficult.
I would say the only thing that could have helped is if they chatted to our on-site builder & joiner before starting work, to get the 'lie of the land'.
17 februari 2026
Antwoord van 21 Degrees
Thanks for your review - we really appreciate it! Great to hear the team’s knowledge and determination stood out during your triple-glazing project.
We also appreciate the note on coordinating with your builder and joiner - that’s really helpful feedback and something we’ll improve on.
Thanks again for choosing us!
Very knowledgeable engineer
Punctual, very knowledgeable and went over and above to sort all our heating issues. Will only use these guys from now on. Thank you!
18 maart 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you so much for your kind words! We’re really pleased we could get everything sorted for you and that you felt well looked after. It means a lot to hear that our team’s knowledge and effort made a difference.
We truly appreciate your support and look forward to helping you again whenever you need us!
Heat pump installation - great service
Great service from start to end of our heat pump installation. Brilliant on site team, particular shout out to Josh, such a hard working engineer, polite and always ready to answer the (101!) questions we asked.
2 maart 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you so much for your kind words! We’re delighted to hear you had a great experience from start to finish with your heat pump installation.
A special thank you for mentioning Josh - we’ll be sure to pass on your feedback. He’ll be really pleased to hear how much you appreciated his hard work and patience in answering all your questions!
As a customer who recommended this…
As a customer who recommended this company to quite a few neighbours and gave them more business, I would no longer recommend this company to anyone. If your battery breakdown it’s no longer their problem. Our battery has been broken for the past 8 months, failing a replacement in November and we are supposedly getting another replacement in March. No compensation or exchange for a different brand. You are on your own to sort it out with the battery company. They will only provide their customer service until the installation and will provide the worst service you will ever experience if your battery fails. If I could give 0 stars I would for the stress and disappointment they caused us for the past few months.
27 februari 2026
Review zonder uitnodiging
So impressed....
From the very first survey I was so impressed with 21 degrees. David was incredibly helpful and knowledgable to guide me through the best tailored option for my new build property. The team carrying out the work were amazing, incredibly diligent and super neat, the finish is far better than I had anticipated. I would highly recommend Matt & his team for anyone considering solar.
27 februari 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
Thank you for such a lovely review. We’re delighted to hear that your experience with 21 Degrees has been positive from the very first survey. David will be really pleased to know his guidance helped you find the right, tailored solution for your new build. It’s also great to hear the installation team impressed you with their diligence, neatness and high-quality finish. We’ll be sure to pass your kind words on to Matt and the rest of the team. Thanks again for the recommendation – it really does mean a lot.
Excellent service and installation of solar system
Excellent service and installation of our solar panels, battery and EV charger. Process was well explained and the team worked hard to get everything installed in really miserable weather.
30 januari 2026
Review zonder uitnodiging
Antwoord van 21 Degrees
We’re really glad to hear you were happy with the installation of your solar panels, battery and EV charger. It’s great to know the process was clearly explained and that the team’s hard work came through – even in such challenging weather!
Thanks again for choosing us, and for taking the time to share your experience.
Time was taken to answer my queries re…
Time was taken to answer my queries re the MVHR amd the service appeared to be very thorough, including changing the kitchen filter.
5 januari 2026
Antwoord van 21 Degrees
Thank you for your review ⭐️
We’re pleased to hear that the team took the time to answer your questions about the MVHR system and that the service felt thorough. Making sure everything is properly checked – including things like changing the kitchen filter – is an important part of keeping your system running efficiently.
Thanks again for taking the time to share your experience.
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