5 Best HVAC Services in London (2026)

Independently ranked by our review of ratings, reviews and reputation · How we chose

By Brad Smith, Home Services Expert · ✓ Data verified August 2026 · 8 min read

A dead boiler in a London winter is not a problem you want to sit with while you shop around. Every HVAC contractor on this page holds a Google rating of 4.8 or higher, and between them they have logged well over 500 reviews, so the real decision is which specialty, boilers, air con or heat pumps, matches the job in front of you.

Short answer: For HVAC services in London, Warm and Cool London leads with a 4.9 rating across 157 Google reviews and a strong reputation for boiler servicing and repair. Be Cool Refrigeration & Air-conditioning (4.8, 168 reviews) is the deepest bench for commercial and residential AC and refrigeration, while Breezwell LTD and Air Options Ltd both hold perfect 5.0 ratings for air conditioning installation. Expect an AC installation to take roughly 6 hours per unit once quoted.

Jump to a business

1. Warm and Cool London
2. Be Cool Refrigeration…
3. Breezwell LTD
4. Air Options Ltd
5. iClimate
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How London's HVAC Contractors Compare

#	Business	Rating	Reviews	Best for
1	Warm and Cool London	4.9 ★	157	Boiler servicing and repair	View ›
2	Be Cool Refrigeration & Air-conditioning	4.8 ★	168	Commercial AC and refrigeration	View ›
3	Breezwell LTD	5.0 ★	68	Residential AC installation	View ›
4	Air Options Ltd	5.0 ★	64	Office and commercial HVAC	View ›
5	iClimate	4.8 ★	70	Period property AC installation	View ›

Our picks for HVAC in London

#1 Overall🕑 Open 7 days

Warm and Cool London

4.9157 Google reviews

Warm and Cool London is a Camden-based heating and cooling engineer covering boiler installation, servicing and repair, along with heat pump and air conditioning work for homes and businesses across London. The team includes Heat Geek accredited engineers for heat pump installs. Reviewers frequently mention being referred by a previous, now-retired heating engineer, a sign of trust passed along within the trade itself.

What people praise

Engineers explain the issue clearly before doing the work
Fast response even during holiday periods and bank holidays
Follow-up visits handled quickly when a second issue appears
Reasonable, transparent pricing according to multiple reviewers

Worth knowing

Smaller review base than some larger London HVAC firms, though every review is strongly positive

Reputation scorecardrank in London

Rating4.9 / 5

Review volume157 · 88th

Confidencemoderate

Recency3 months ago

Info completenesssite · phone · hours

Rating breakdown98% 5-star

✓ VerifiedSource: Google

Our take: The highest-rated boiler specialist on this page, with a pattern of trade referrals that is hard to fake. A strong first call for boiler servicing, repair or a full heating system replacement.

Website +442036332322 Directions

The Vineyards, 36 Gloucester Ave., London NW1 7BB

#2🕑 Open 7 days↩ Responds to reviews

Be Cool Refrigeration & Air-conditioning

4.8168 Google reviews

Be Cool Refrigeration & Air-conditioning is a London HVAC contractor based near Ludgate Hill, operating since 2004 and covering air conditioning installation, commercial refrigeration and planned maintenance for homes, restaurants and commercial buildings. Its engineers are F-Gas certified and the company reports over 2,000 completed projects with 24/7 emergency support. It is one of the more established commercial-facing HVAC operators in central London.

What people praise

Clean, tidy installation work with attention to detail on pipework and finishing
Team explains options and gives useful maintenance tips after the job
Competitive pricing versus other AC installers reviewers compared them to
Handles both residential split systems and commercial refrigeration

Worth knowing

A handful of older reviews mention rougher early experiences before recent installs

Reputation scorecardrank in London

Rating4.8 / 5

Review volume168 · 96th

Confidencemoderate

Recency7 weeks ago

Info completenesssite · phone · hours

Rating breakdown93% 5-star

✓ VerifiedSource: Google

Our take: The most established name here for anyone needing commercial refrigeration alongside AC, with the highest review volume on the page and a two-decade track record.

Website +442034881889 Directions

35-37 Ludgate Hill, London EC4M 7JN

#3🕑 Open 6 days/wk↩ Responds to reviews

Breezwell LTD

5.068 Google reviews

Breezwell LTD is a London air conditioning contractor based on Paul Street, focused specifically on air conditioning installation for residential and commercial properties. It positions itself around transparent, upfront pricing and full manufacturer warranty on every installation, with named engineers like Manuel and Dominic mentioned repeatedly by reviewers for quality of work.

What people praise

Perfect 5.0 rating with consistently detailed, named-engineer reviews
Installations described as clean, tidy and left in good order
Clear communication throughout the process
Manufacturer warranty included on every install

Worth knowing

A newer, smaller review base than the more established names on this page

Reputation scorecardrank in London

Rating5 / 5

Review volume68 · 71th

Confidenceearly

Recency3 weeks ago

Info completenesssite · phone · hours

Rating breakdown99% 5-star

✓ VerifiedSource: Google

Our take: A perfect rating built on a smaller but consistent set of reviews. Worth a call for straightforward residential AC installation where transparent pricing matters.

Website +442037400811 Directions

86-90 Paul St, London EC2A 4NE

#4🕑 Open 5 days/wk

Air Options Ltd

5.064 Google reviews

Air Options Ltd is a London HVAC contractor based near Devonshire Square in the City, providing air conditioning installation and servicing for both residential and commercial clients, including long-running maintenance contracts with businesses like dermatology clinics. Reviewers describe ongoing, multi-year working relationships rather than one-off jobs, suggesting a strong repeat-business commercial client base.

What people praise

Perfect 5.0 rating with reviewers citing years of consistent service
Engineers explain diagnostics clearly before starting repair work
Office and admin team praised for responsiveness
Handles both installation and long-term servicing contracts

Worth knowing

Site text was unavailable to verify service specifics beyond what reviewers describe

Reputation scorecardrank in London

Rating5 / 5

Review volume64 · 63th

Confidenceearly

Recency2 months ago

Info completenesssite · phone · hours

Rating breakdown100% 5-star

✓ VerifiedSource: Google

Our take: A strong option for offices and commercial premises wanting a long-term HVAC servicing relationship rather than a single visit, backed by a perfect rating.

Website +442071274686 Directions

9 Devonshire Square, London EC2M 4YF

#5🕑 Open 7 days↩ Responds to reviews

iClimate

4.870 Google reviews

iClimate is a second-generation London HVAC contractor specialising in air conditioning installation across every type of property, from Grade II listed Georgian townhouses to large industrial spaces. The company frames itself around building knowledge specific to London's housing stock and has more than 25 years of family experience in the trade. Its work covers single-room split systems through to whole-house air conditioning projects.

What people praise

Reviewers specifically praise handling of older and listed properties
Team returns quickly to fix any post-install issues at no extra cost
Attention to detail on wiring concealment and finish quality
Strong, consistent five-star pattern across recent reviews

Worth knowing

Focused on air conditioning rather than boiler or heating system work

Reputation scorecardrank in London

Rating4.8 / 5

Review volume70 · 79th

Confidenceearly

Recency4 weeks ago

Info completenesssite · phone · hours

Rating breakdown96% 5-star

✓ VerifiedSource: Google

Our take: The specialist to call if you live in an older or listed London property and want an installer who understands the building constraints, not just the equipment.

Website +442031981101 Directions

43 Berkeley Square, London W1J 5AP

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How we score

Every number on this page is computed from public Google data on the date shown, not from opinion or payment. Rating is the business’s live Google star average. Review volume is how many customers have rated them, measured against other London HVAC contractors on this page. Confidence weighs the rating by that volume, so a 4.9 from over a hundred people carries more weight than a 5.0 from a few dozen. Recency reflects how recently customers are still leaving reviews. No business can pay to change these numbers.

How much does HVAC work cost in London? (2026)

Pricing depends heavily on the job, whether it’s a boiler service, a full AC installation or ongoing maintenance. The only grounded figure available across this page’s data is installation time, not a fixed price, so ask each company for a written quote based on your property and system.

Serving all of London

These HVAC contractors cover central London and the wider metro, including Camden, the City, Ludgate Hill, Shoreditch and Devonshire Square, with several serving Greater London more broadly. Searching for HVAC services near me? Every listing below shows a live phone number so you can reach the closest option fast.

What to ask before you hire an HVAC contractor

Are your engineers F-Gas or Heat Geek certified for the specific system you’re quoting?
Is the quote fixed-price or subject to change once work starts?
What warranty do you offer on parts and installation labour?
How soon can you get someone out for an emergency callout?
Will you provide a written quote before any work begins?

Frequently asked questions

How did you choose these HVAC contractors?

We started from every HVAC contractor in London with a public Google presence, then ranked by rating, review volume, consistency and recency. See How we score above.

Are these rankings paid?

No. Rankings come from the public Google data in the scorecard. A business can pay to be a Featured Partner, which adds a badge and top placement, but that never changes another business’s score or position on the underlying data.

How often is this updated?

The data carries a verified date (August 2026 on this page). We refresh listings periodically so ratings and review counts stay current.

Do London HVAC companies offer emergency callouts?

Several of the contractors here, including Be Cool and Breezwell, run 24/7 support for emergency repairs. Confirm availability and any out-of-hours premium when you call.

How long does an air conditioning installation take in London?

Breezwell reports an average of 6 hours per unit once the survey and quote are complete. Larger multi-unit or commercial jobs will take longer, so ask for a specific timeline with your quote.

The bottom line

Warm and Cool London is the safest default for boiler work on proven track record, while Be Cool is the deeper bench for commercial AC and refrigeration. Whichever you call, get the quote in writing before work starts.

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