MSARCH

Best contractors in Markham, Ontario

MSARCH tracks 14 vetted contractors in Markham, Ontario, averaging 4.9★ on Google. That includes 9 HVAC contractors, 3 electricians and 2 plumbers.

The most-reviewed is Constant Home Comfort with 603 Google reviews, while Innovation Electric Inc. holds one of the top ratings at 5.0★. Every listing below is ranked by Google rating weighted for review volume.

  • 14Contractors
  • 4.9★Avg rating
  • 3,460Reviews

Updated July 2026 · Ranked by Google rating, review volume and recent-review sentiment

HVAC & Heating (9)Electricians (3)

Nearby cities

Richmond Hill 49Concord 12Vaughan 14Toronto 295Pickering 11Whitchurch-Stouffville 9

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How many contractors are in Markham?

MSARCH lists 14 HVAC, electrical and plumbing contractors in Markham, Ontario, with an average Google rating of 4.9 out of 5.

What is the highest-rated contractor in Markham?

Innovation Electric Inc. is among the highest rated in Markham, with 5.0★ from 231 Google reviews.

How are these contractors ranked?

MSARCH ranks Markham 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.