21degrees.com

4.7
4.7 Based on 41 reviews

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...

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Average Rating

4.7

/
5

41 Reviews

5 Star
88%
4 Star
5%
3 Star
2%
2 Star
2%
1 Star
2%

All Reviews

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Review Time

Lydia Coleman
Outstanding Post-Purchase Support

Outstanding post-purchase support, much appreciated! 🤩 Our unit encountered an error code after a few years. A temperature sensor seemed faulty. The support team was excellent, and the engineer called to share insights on the potential issue (a corroded wire from exposure to the elements). He guided me on removing the front panel, accessing the sensor, checking/repairing the wire, and performing a general internal cleanup. His advice was spot on, and I managed to get the unit operational again without needing an engineer visit. He also offered to assist us in real time over the phone if necessary. What a true star!

5
Date of experience: Jan 14, 2026
Cheryl Adams
Exceptional After-Sales Support

Exceptional after-sales support, thank you! 🤩 Our unit displayed an error code after a couple of years. A temperature sensor was indicated as faulty. The support team was fantastic, and the engineer called to discuss potential causes (a corroded wire from exposure to the elements). He explained how to remove the front panel, access the sensor, check/repair the wire, and perform a general internal clean. His advice was accurate, and I managed to get the unit working again without needing an engineer visit. He even offered to guide us through the process over the phone if needed. What a true star!

5
Date of experience: Jan 14, 2026
Calla Price
Excellent Service and Quick Response

The response time, diagnosis, and repair were outstanding. Our air source heat pump stopped working overnight, and the service team identified and fixed the issue within a few hours of contact.

5
Date of experience: Dec 11, 2025
Strafzettel88
Quality Product but Ordering Issues

The windows appear to be of high quality, but the ordering process was poorly organized. We received windows with mismatched glazing bar configurations. Although this was indicated on the quote, it wasn't clear as each window was listed on a separate page. The company should provide clearer summaries or visuals of the windows to prevent such mistakes in the future.

1
Date of experience: Dec 08, 2025
JeroMinou
Improved Service Experience

The request for service was handled promptly, a significant improvement from my previous experiences! I consider the new customer service setup a resounding success. The service itself was efficiently executed, and the engineer was pleasant and helpful. Thank you.

5
Date of experience: Nov 28, 2025
Leisha Patterson
High Costs for Local Service

The engineer was excellent, but he couldn't clean out the capsule as he didn't have the seals, so he just drained the water. He spent 1 hour 45 minutes checking, which works out to about £100/hour, making it quite expensive for a local service! I will be looking for more competitive rates next year.

3
Date of experience: Nov 24, 2025
Russell
Efficient and Knowledgeable Service

The technician who serviced our system was very efficient and knowledgeable. He was thorough and left everything tidy.

5
Date of experience: Nov 13, 2025
Cyborg_Anaconda59
Thorough and Efficient Work

The service was thorough and efficient, with good technical discussions regarding various aspects of the system. We finally got the leaking joint in the airing cupboard fixed!

5
Date of experience: Oct 22, 2025
Linda
Reliable Installation and Service

We utilized the service for our heat pump installation and underfloor heating connection. They delivered exactly what they promised, adhered to timelines, and met all our expectations. Although there were a few challenges due to the complexity of the work, they resolved everything quickly and professionally, making the process stress-free. The team was skilled, friendly, and a pleasure to work with. Highly recommend, and we will definitely use them again.

5
Date of experience: Oct 15, 2025
Dick P.
Professional and Friendly Experience

I always have a great personal and professional experience. The team is both knowledgeable and friendly throughout the entire process from quotation to completion. I would always return for further improvements, knowing they have my best interests at heart.

5
Date of experience: Oct 15, 2025

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Business Details

  • 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. See more

  • email info@21degrees.com
  • call 08082815021
  • language https://21degrees.com

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