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Corestar Mechanical Ltd

HVAC contractor in Kitchener, ON.

Trade
HVAC contractor
Business address
Kitchener, ON
Telephone
(519) 579-5037
Website
corestar.ca
Hours
  • Monday8:00 am - 4:30 pm
  • Tuesday8:00 am - 4:30 pm
  • Wednesday8:00 am - 4:30 pm
  • Thursday8:00 am - 4:30 pm
  • Friday8:00 am - 4:30 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

4.6 (64)

  • I had them for years to service my furnace and AC, always reasonable in pricing and product expertise. Have very good well trained technicians to deliver to the satisfaction.

    Asif K.

  • Excellent team to deal with and they know their stuff!

    Michelle F.

  • Amazing and fast service.

    Corinne B.

  • Corestar Mechanical has always provided us with great customer service. Their team and techs are knowledgeable, respectful and we will definitely use them again in the future for any HVAC services.

    Steve T.

  • Shaun and Team are amazing! Corestar have been servicing my equipments for years and I have been extremely satisfied with their services.

    Sam D.

  • Once again the guys from Corestar Mechanical did a superb job in installing our new furnace. Thanks again Josh And Matt.

    Ed O.

  • Quit searching! Corestar will provide the type of excellent service you’re looking for, one that I just experienced. From an initial urgent repair completed in a timely fashion by Josh, to an in home, no sales pressure consultation from Shaun and the impressive workmanship by Scott in replacing my 16yr old furnace, can only lead me to recommend Corestar.

    Gwyn M.

  • Great experience. Shaun and his team made the replacement of our furnace easy and seamless. Very professional, clean and work was done in a timely manor. I would recommend to others.

    Blair B.

  • Excellent service, courteous staff. All work was performed professionally.

    Dan L.

  • We have used Corestar Mechanical for around 20 years now for a reason. They've provided outstanding products that have been hassle free, and consistently great service for ongoing maintenance and our recent furnace/AC replacement. They have been excellent to work with all around...highly recommend.

    Rob H.

  • excellent service

    Lenore

  • Five stars for Corestar Rodger team. Very polite and professional. I would recommend them for everybody who have heating furnace problem. Thumbs up for you guys. Greg Chrzaszcz.

    Greg C.

  • Corestar was very quick to respond to our initial repair call for our old furnace & when it was found necessary to replace Corestar was able to install a new one within a matter of days. They did a great job on the install & had us quickly back to a nice warm house.

    John C.

  • Great quality and service.

    George M.

  • We have used Corestar now for a furnace, air conditioner and our new gas line addition for our pool. Excellent service with professional workers. Always on time sometimes even early which we appreciate very much. Thank you Shaun and your superb crews and craftsmanship.

    Tawnya C.

  • Excellent customer service from the house visit and estimate provided by Shaun to the install by tech Josh . Prices was good work was started on time and protective coverings were used and complete clean up was done when finished . Used Corestar 12 years ago for furnace install and still the same great customer service.

    Dave B.

  • We have consistently been pleased with Corestar's services, utilizing them for both plumbing and HVAC. Their exceptional communication and prompt service make them a reliable choice for any service and maintenance.

    Adam M.

  • Excellent…from first contact, to installation and follow-up. We couldn’t have been more pleased.

    Dan M.

  • The installation of our furnace and heat pump was handled in the most competent and professional manner. Staff were courteous , knowledgeable and very tidy. We're delighted with the operation of the new equipment and we would highly recommend Corestar Mechanical. Paula & Frank

    Paula R.

  • My go-to for plumbing and new furnace, water softener etc.

    Tracey J.

  • Very happy with the prompt service provided by Corestar Mechanical, specially by Shaun B. We needed a new furnace and it was installed within 1 day. Very professional company and very price competitive. Thank you guys! Sucha J

    sucha J.

  • This was Corestar's third equipment install at our residence. The team was friendly and professional. They made sure that everything was operating correctly. They answered all our questions clearly and showed us how to operate the system. It was a pleasure to deal with them. My wife and I are very pleased.

    Roger G.

  • A great experience from initial contact through to completed install. Prices were good, service was excellent. The installers took the time to lay drop cloths from my front door all the way to my basement utility room, which was appreciated and showed a high degree of professionalism.

    Mike W.

  • We replaced our old Furnace and AC with new ones, provided by Corestar. The whole process was easy, starting with the initial visits done by Shaun and finishing with the installation process. The team was nice, polite and did an excellent job. Fast response, excellent price, efficient work by Scott, Josh and a third team member, perfect cleanup. Highly recommended!

    Neculai I.

  • Installed when promised Neat, professional install Peter and Josh, the installers cleaned up afterwards, they were great. 25 years I have been doing business with Corestar

    Jeff

  • Fast, honest and friendly service!!

    tom D.

About Corestar Mechanical Ltd

Corestar Mechanical Ltd says it has worked in heating, air conditioning and plumbing since 1996. Its Kitchener work also includes maintenance and service, with emergency repair available by telephone.

Corestar Mechanical Ltd’s heating, cooling and plumbing work

The company names air conditioning among its services alongside heating and plumbing. It also offers financing, which sits alongside its repair, maintenance and replacement work rather than replacing those services.

Corestar Mechanical Ltd is open Monday through Friday from 8:00 am to 4:30 pm. Environment Canada normals for Kitchener’s 1981-2010 period put the mean temperature at 7.3 degrees Celsius, with an average high of 12.1 degrees Celsius and average low of 2.5 degrees Celsius.

Ratings and customer comments for Corestar Mechanical Ltd

Corestar Mechanical Ltd has a 4.6 rating from 64 reviews. Reviewers most often mention knowledgeable technicians, courteous staff, prompt repair work, furnace and air-conditioning replacement, and ongoing equipment maintenance.

Several reviewers describe repeat use over years, including service for furnaces and air conditioners. Comments also mention clean installation work, straightforward consultations, and professional handling of urgent furnace repairs.

The company’s stated range spans routine maintenance, service calls, emergency repair, air conditioning, heating and plumbing. Its 1996 start date is the longest-running concrete business detail it gives.

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 Kitchener

About Kitchener

Population256,885 (2021)
Average yearly snowfall52.9 inches

Sources: Statistics Canada, 2021 Census. Environment and Climate Change Canada, Canadian Climate Normals 1981-2010.