Thermwise

Thermwise

Verified Local Listing Unclaimed Profile — Claim It 24/7 Emergency Callouts
★ 4.20 (146 customer reviews)
• Base: W2 (Princethorpe House, London, W2 5SU)

About Thermwise

Thermwise is a verified local trade specialist based in London (W2), specializing in Plumber, Central Heating Service, Gas engineer. Holding a 4.2 star rating across 146 verified Google customer reviews, they offer professional callout services across the area.

Core Specialities: Plumbers

Services & Capabilities

  • Plumber
  • Central Heating Service
  • Gas engineer

Opening & Trading Hours

Open 24 hours
tuesday Open 24 hours
wednesday Open 24 hours
thursday Open 24 hours
friday Open 24 hours
saturday Open 24 hours
sunday Open 24 hours
monday Open 24 hours

Postal Code Districts Covered

Thermwise actively provides free quotes and service across these Greater London postal districts:

Customer Reviews

★ 4.20 (5 verified via Google)
Eszter Szonja Gyongy • London, UK

"Please avoid them, your money will be wasted. They arrived quickly, but failed to resolve a blocked toilet. Charged me £216 for nothing. Quoted me another £720 !!! for removing the wall-hang toilet and unblocking the pipe. Luckily a called another plumber (London Emergency Plumbing) who came and resolved the blockage with a snake in 30 min."

Reviewed on 11 Jun 2026 • Verified Customer (via Google)
Neha Zamvar • London, UK

"I was extremely impressed with DSM Plumbing when they came to repair a gas leak. I called them at midday on Saturday and they were able to send two engineers that same day. The engineers found the leak and replaced the relevant pipe section all within a couple of hours. Despite the job being very difficult (our pipes are in our ceiling and it was not clear where the leak was coming from) the engineers kept working with precision and efficiency. They also tidied up afterwards. I would highly recommend this company for emergency gas leak tracing and repairs."

Reviewed on 16 Nov 2025 • Verified Customer (via Google)
Camille Brayer • London, UK

"Super quick reply! Had water coming back from my pipe, they answered the call in the morning and dispatched someone to come have a look in the afternoon! Trusted and recommended"

Reviewed on 09 Oct 2025 • Verified Customer (via Google)
Edonis Seferi • London, UK

"I had an issue with my boiler and no hot water, which was a nightmare with two kids at home. I called DSM Plumbing, and they had someone over within an hour. The plumber was really friendly, explained the issue to me in a simple, easy-to-understand way, and fixed everything on the spot. Since then, we’ve had no problems at all. Super efficient and trustworthy service – highly recommended!"

Reviewed on 23 Sep 2024 • Verified Customer (via Google)
Marya Filatova • London, UK

"Fantastic service from DSM Plumbing. I ordered slightly wrong components for the job, but Shaban was creative adjusting to existing conditions. Very neat installation and great communication. Glad I found the contact, highly recommend"

Reviewed on 29 Mar 2023 • Verified Customer (via Google)
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