MSARCH

Best contractors in Sarnia, Ontario

There are 52 home-service contractors in Sarnia, Ontario in the MSARCH directory, with an average Google rating of 4.5★. That includes 23 electricians, 16 HVAC contractors and 13 plumbers.

The most-reviewed is Reliance Home Comfort with 3,501 Google reviews, while Lambton Sanitation holds one of the top ratings at 5.0★. Every listing below is ranked by Google rating weighted for review volume.

  • 52Contractors
  • 4.5★Avg rating
  • 5,338Reviews

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

HVAC & Heating (16)Electricians (23)Plumbers (13)

Nearby cities

Wallaceburg 16Strathroy 24Chatham-Kent 7Chatham 44Exeter 6Windsor 66

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How many contractors are in Sarnia?

MSARCH lists 52 HVAC, electrical and plumbing contractors in Sarnia, Ontario, with an average Google rating of 4.5 out of 5.

What is the highest-rated contractor in Sarnia?

Lambton Sanitation is among the highest rated in Sarnia, with 5.0★ from 318 Google reviews.

How are these contractors ranked?

MSARCH ranks Sarnia 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.