Best HVAC contractors in London, Ontario

MSARCH tracks 48 HVAC contractors in London, Ontario, averaging 4.7★ on Google. Every listing below is ranked by Google rating, weighted for review volume, so the most trusted names rise to the top.

The most-reviewed HVAC contractor is Reliance London Heating, Air Conditioning & Plumbing with 13,157 Google reviews, while Maxcare Heating And Cooling holds one of the top ratings at 5.0★.

48HVAC contractors
4.7★Avg rating
26,808Reviews

Updated July 2026 · Ranked by review-weighted Google rating

Maxcare Heating And Cooling

London, ON

★★★★★ 5.0 (268)

Hawana HVAC Solutions Ac & Furnace Repair London ON

London, ON

★★★★★ 5.0 (191)

Virtue Heating and Air Conditioning

London, ON

★★★★★ 5.0 (134)

Air Design Services Heating & Cooling

London, ON

★★★★★ 5.0 (112)

Core Comfort HVAC

London, ON

★★★★★ 5.0 (82)

Superior HVAC Service, Heating & Air Conditioning

London, ON

★★★★★ 5.0 (62)

Best Services Heating & Air Ltd.

London, ON

★★★★★ 5.0 (33)

London Home Climate

London, ON

★★★★★ 5.0 (21)

Perfect Temperature HVAC Services INC

London, ON

★★★★★ 5.0 (18)

Green Air HVAC

London, ON

★★★★★ 5.0 (17)

Donaldson Home Services

London, ON

★★★★½ 4.9 (2,938)

Platinum Air Care

London, ON

★★★★½ 4.9 (1,697)

Handy Bros. HVAC London (AC and Furnace Repair)

London, ON

★★★★½ 4.9 (761)

Peter Inch & Associates

London, ON

★★★★½ 4.9 (554)

Hometown Heating and Cooling

London, ON

★★★★½ 4.9 (308)

Builders Choice Air Systems Ltd

London, ON

★★★★½ 4.9 (233)

GM Mechanical

London, ON

★★★★★ 5.0 (15)

Comfort Living Heating & Air Conditioning

London, ON

★★★★½ 4.9 (74)

Mozee Gas Heating & Cooling

London, ON

★★★★★ 5.0 (11)

Middlesex Mechanical

London, ON

★★★★½ 4.9 (43)

Reliance London Heating, Air Conditioning & Plumbing

London, ON

★★★★½ 4.8 (13,157)

Finan Home Service

London, ON

★★★★½ 4.8 (890)

Home Service Professionals

London, ON

★★★★½ 4.8 (747)

Orzech Heating and Cooling

London, ON

★★★★½ 4.8 (295)

Same Day Hvac Inc

London, ON

★★★★★ 5.0 (4)

Carver Heating & Cooling

London, ON

★★★★½ 4.8 (76)

Accurate PHC Inc.

London, ON

★★★★½ 4.8 (26)

DesRoches Heating and Cooling HVAC

London, ON

★★★★½ 4.8 (25)

All Climate Inc.

London, ON

★★★★½ 4.8 (24)

MMS HVAC

London, ON

★★★★★ 5.0 (2)

Roy Inch & Sons Home Services by Enercare

London, ON

★★★★½ 4.7 (1,563)

Bow Home Comfort Systems - London ON

London, ON

★★★★½ 4.7 (44)

Comfort Canada

London, ON

★★★★½ 4.7 (41)

London Home Comfort

London, ON

★★★★½ 4.7 (15)

Royal Air Conditioning & Heating Ltd.

London, ON

★★★★½ 4.7 (13)

Prime Air & Water

London, ON

★★★★½ 4.6 (9)

Constant Home Comfort London

London, ON

★★★★½ 4.6 (72)

Zed-Air Heating & Air Conditioning

London, ON

★★★★½ 4.6 (97)

M & K Heating and Air Conditioning

London, ON

★★★★½ 4.6 (1,705)

DHVAC REFRIGERATION OF CANADA, MECHANICAL, HEATING & REFRIGERATION SYSTEM

London, ON

★★★★☆ 4.4 (7)

Aire One Heating & Cooling London

London, ON

★★★★½ 4.5 (274)

TML Supply Company - London

London, ON

★★★★☆ 4.2 (5)

Corner Gas HVAC

London, ON

★★★★☆ 4.4 (39)

Jayden's Mechanical

London, ON

★★★★☆ 4.3 (22)

Gale HVAC Services

London, ON

★☆☆☆☆ 1.0 (1)

Forest City Mechanical

London, ON

★★★½☆ 3.9 (29)

Home Comfort Center

London, ON

★★★½☆ 3.9 (37)

Poulsen

London, ON

★★★☆☆ 3.2 (17)

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How many HVAC contractors are in London?

MSARCH lists 48 HVAC contractors in London, Ontario, with an average Google rating of 4.7 out of 5.

Who is the best-rated HVAC contractor in London?

Maxcare Heating And Cooling is among the highest-rated HVAC contractors in London, with 5.0★ from 268 Google reviews. Compare the full ranked list above before you choose.

How much does an HVAC job cost in London?

Pricing varies by job, so the best approach is to compare quotes. Shortlist two or three highly-rated HVAC contractors from the list above, confirm they are licensed and insured, and request a written estimate from each.

How are these HVAC contractors ranked?

MSARCH ranks London HVAC contractors by their Google star rating, weighted by review count so a company with hundreds of reviews outranks one with only a few. All data is sourced from Google Maps and listings are not paid placements.