CMS Group LTD.
HVAC contractor in Richmond Hill, ON.
In the words of CMS Group LTD.
Mechanical, Electrical and Communications contractor
- Trade
- HVAC contractor
- Business address
- 9133 Leslie St Ste 110, Richmond Hill, ON L4B 4N1, Canada
- Telephone
- (416) 609-9992
- Website
- cmsgroup.com
- Hours
-
- Monday8:00 am - 4:00 pm
- Tuesday8:00 am - 4:00 pm
- Wednesday8:00 am - 4:00 pm
- Thursday8:00 am - 4:00 pm
- Friday8:00 am - 4:00 pm
- SaturdayClosed
- SundayClosed
From the business's Google listing, checked Oct 2026
- Register
- ON register
Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the provincial licensing body.
Google Reviews
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An electrician by the name of Jesse did work in my suite for my company. He was very organized, helpful, polite, and clean. I will definitely be using this company again because of him!
c
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Cordial workers and impressive workmanship.
Giorgina R.
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Great company. Electricians do amazing work.
Dolores P.
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Great company. Amazing workmanship. Trusted contractor.
J C.
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CMS electrical vehicle plate DKAY 047. To the driver at 0530 this morning on Wellington and Bayview. Your speed was beyond excessive next to your weaving in and out of traffic. CMS address your driver. This is clearly an issue as many people have witnessed.
T P.
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Most Valuable Company I've ever encountered!
MIGUEL M.
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Great team to work with. Always responsive, easy to work with. Great partner.
ken S.
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Work was done in a timely and cost effective manner. Amazing customer service!
Ajay P.
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First class contractor built on integrity and partnerships. Always fair and a pleasure to do business with.
Joel T.
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Great company to work with
Travis P.
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CMS Group is truly a top tier company and their professionalism is unmatched in the industry.
Paul H.
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Very knowledgeable and friendly staff!
Keith D.
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Top Tier Contractor, with one of the best teams in the business.
Mark P.
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Best contractor in town!
Michael W.
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Always enjoy working with the team at CMS! Top notch.
Andrew P.
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CMS has been a valued partner for Lutron in the electrical industry. They continue to take care of their customer and that culture falls in line with Lutron.
Robert B.
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Been Dealing with CMS Group since day one. All staff are very welcoming when entering their offices, nothing but professional and helpful, they pay close attention to detail and want the best for their clients. My team at Sesco and myself want nothing more than to see CMS succeed and continue to service their customers.
Maurizio M.
About CMS Group LTD.
Mechanical and electrical services
CMS Group LTD. operates as a mechanical, electrical, and communications contractor. The company says it provides commercial plumbing along with service and maintenance. Its website names approximately 50 years of experience in the industry.
Reviewers frequently mention the company's workmanship and professionalism. One reviewer noted that the team was responsive and easy to work with, while others described the staff as knowledgeable and friendly.
Richmond Hill contractor details
Operating from Monday to Friday between 8:00 am and 4:00 pm, the company holds a 4.5 star rating based on 51 reviews. According to Environment Canada normals, the Richmond Hill area has average high and low temperatures of 12.6°C and 3.2°C respectively.
CMS Group LTD. has been in operation since 1981.
Services, brands and warranty details come from the company's own website. Ratings, hours and reviews come from Google. Town figures come from Statistics Canada and Environment Canada.
More HVAC contractors in Richmond Hill
About Richmond Hill
| Population | 202,022 (2021) |
|---|---|
| Average yearly snowfall | 59.3 inches |
Sources: Statistics Canada, 2021 Census. Environment and Climate Change Canada, Canadian Climate Normals 1981-2010.