brown and white concrete house under blue sky during daytime — contractors in Markham, Ontario

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

Photo by Dillon Kydd on Unsplash

HVAC & Heating (9)Electricians (3)

Electricians

Lia Electric Ltd.

Markham, ON

★★★★★ 5.0 (189)

Praised for Professional & courteous · Punctual & responsive · Reliable

Electricians

Innovation Electric Inc.

Markham, ON

★★★★★ 5.0 (231)

Praised for Professional & courteous · Reliable · Punctual & responsive

HVAC & Heating

HVAC Smart Solution

Markham, ON

★★★★★ 5.0 (62)

Praised for Reliable · Professional & courteous · Punctual & responsive

HVAC & Heating

Markham Mechanical

Markham, ON

★★★★★ 5.0 (25)

Praised for Reliable · Professional & courteous · Punctual & responsive

Plumbers

Superior Plumbing & Heating of Markham

Markham, ON

★★★★½ 4.9 (50)

Praised for Professional & courteous · Reliable · Punctual & responsive

HVAC & Heating

Service Express HVAC

Markham, ON

★★★★½ 4.9 (417)

Praised for Punctual & responsive · Professional & courteous · Knowledgeable

Electricians

Power Squad Electricians

Markham, ON

★★★★★ 5.0 (14)

Praised for Punctual & responsive · Professional & courteous · Reliable

HVAC & Heating

Aire One Heating & Cooling

Markham, ON

★★★★½ 4.8 (561)

Praised for Punctual & responsive · Professional & courteous · Knowledgeable

HVAC & Heating

Hargrave Heating & Air Conditioning

Markham, ON

★★★★½ 4.9 (426)

Praised for Professional & courteous · Reliable · Quality workmanship

HVAC & Heating

Eco Star Home Services Co.

Markham, ON

★★★★½ 4.7 (559)

Praised for Punctual & responsive · Reliable · Professional & courteous

HVAC & Heating

Pinewood Heating & Air Conditioning

Markham, ON

★★★★½ 4.8 (246)

Praised for Professional & courteous · Quality workmanship · Reliable

Plumbers

Access Plumbing

Markham, ON

★★★★½ 4.7 (48)

Praised for Professional & courteous · Reliable · Punctual & responsive

HVAC & Heating

CooperFix - Appliance Repair

Markham, ON

★★★★☆ 4.4 (29)

Praised for Punctual & responsive · Professional & courteous · Reliable

HVAC & Heating

Constant Home Comfort

Markham, ON

★★★★½ 4.8 (603)

Praised for Professional & courteous · Reliable · Punctual & responsive

Nearby cities

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