Best contractors in Hamilton, Ontario

There are 12 home-service contractors in Hamilton, Ontario in the MSARCH directory, with an average Google rating of 4.7★. That includes 10 HVAC contractors and 2 electricians.

The most-reviewed is Boonstra Heating and Air Conditioning with 4,978 Google reviews, while Dynamic Heating & Cooling holds one of the top ratings at 5.0★. Every listing below is ranked by Google rating weighted for review volume.

12Contractors
4.7★Avg rating
7,527Reviews

Updated July 2026 · Ranked by review-weighted Google rating

Best HVAC contractors in Hamilton 10

HVAC & Heating

Dynamic Heating & Cooling

Hamilton, ON

★★★★★ 5.0 (803)

HVAC & Heating

MDM Mechanical

Hamilton, ON

★★★★★ 5.0 (134)

HVAC & Heating

MY HVAC Guy

Hamilton, ON

★★★★★ 5.0 (90)

HVAC & Heating

Superior HVAC Service, Heating & Air Conditioning

Hamilton, ON

★★★★★ 5.0 (86)

Electricians

ElectricSafe.ca

Hamilton, ON

★★★★½ 4.9 (179)

HVAC & Heating

Rosati HVAC

Hamilton, ON

★★★★★ 5.0 (8)

HVAC & Heating

HAMCO Heating and Cooling Ltd.

Hamilton, ON

★★★★½ 4.8 (728)

HVAC & Heating

Lancaster Heating & Cooling

Hamilton, ON

★★★★½ 4.8 (228)

HVAC & Heating

Boonstra Heating and Air Conditioning

Hamilton, ON

★★★★½ 4.7 (4,978)

HVAC & Heating

Canadian Heating and Air Conditioning Inc.

Hamilton, ON

★★★★½ 4.6 (291)

Electricians

Berwick Electric

Hamilton, ON

★★★☆☆ 3.0 (2)

HVAC & Heating

Canada Climate Services

Hamilton, ON

No rating yet

Nearby cities

Burlington 36 Oakville 25 Mississauga 29 Brantford 53 Brampton 13 Cambridge 103

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How many contractors are in Hamilton?

MSARCH lists 12 HVAC, electrical and plumbing contractors in Hamilton, Ontario, with an average Google rating of 4.7 out of 5.

What is the highest-rated contractor in Hamilton?

Dynamic Heating & Cooling is among the highest rated in Hamilton, with 5.0★ from 803 Google reviews.

How are these contractors ranked?

MSARCH ranks Hamilton 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.