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thermalwerk

MCS  ·  Viessmann trained  ·  Daikin approved  ·  London

Home climate,
engineered.

Boilers, heat pumps, air conditioning and underfloor heating for London homes. Installed properly, scheduled reliably, and maintained by actual engineers.

01

Engineering credibility.

MCS-certified for heat pump installations. Viessmann-trained on boilers. Daikin-approved for air conditioning. Gas Safe registered. F-Gas certified. Real credentials, not marketing.

02

Speed and certainty.

Same-day responses. Surveys within the week. Install dates we keep. When something needs fixing later, we pick up the phone.

03

Full climate, one team.

Heating, cooling, air quality and hot water. Under one trusted roof, with a single team who knows the whole system — not three separate contractors pointing fingers at each other.

What we do

Five services. One proper team.

Residential-only. London and the surrounding areas. No commercial work, no commission-driven upsells.

How it works

Four steps.
No theatre.

Most heating companies make this feel more complicated than it is. We don't.

  1. Step 01

    Talk to us.

    Call, WhatsApp or email. We'll ask what you're trying to achieve, and listen before we tell you anything. Same-day response, every time.

  2. Step 02

    Home survey.

    One of our senior engineers visits. Measures your space, checks your existing system, and designs something that actually fits your home and your life. Free, no pressure, detailed written quote within the week.

  3. Step 03

    Installation.

    Fixed date, fixed team, fixed price. Dust sheets on floors, overshoes on boots, a daily text on how the job is going. We commission every system properly and hand it over with a walk-through — not a clipboard.

  4. Step 04

    Aftercare.

    Annual service reminders, warranty admin handled on your behalf, and an engineer on the phone when something is wrong. The bit most installers forget is where we do our best work.

Customer stories

What homeowners tell us after the install is finished.

Placeholder reviews shown while we build a verified Google and Checkatrade profile.

Replaced our old combi with a heat pump. Quiet, much cheaper to run, and the team left the plant room tidier than they found it.
RM

Rachel M.

Dulwich · Heat pump

We had three quotes for a new Viessmann boiler. Thermalwerk was not the cheapest, but they were the only ones who actually explained the sizing.
DK

David K.

Islington · Boiler replacement

Two Daikin units fitted across an open-plan living space. Clean cable runs, properly commissioned, works brilliantly. Glad we waited for them.
PS

Priya S.

Kensington · Air conditioning

Talk to us

Tell us what you're trying to do.

We'll call back the same working day, talk through your options, and book a free home survey if it's the right next step. No pressure, no hard sell.