Atassi Mechanical
HVAC contractor in Toronto, ON.
In Atassi Mechanical's own words
Fully licensed and insured HVAC service providers based in Toronto’s junction triangle neighbourhood. We do heating repair, furnace repair, ac repair, and retrofits across Toronto, Etobicoke, Mississauga, Scarborough, Vaughan, and Richmond Hill. Our HVAC service covers heat pump installation, furnace installation, AC installation, boiler replacement, tankless water heaters, in-floor heating, humidifiers, and air purifiers sized to your home instead of pulled from a stock package. Our brands include Mitsubishi, Lennox, Daikin, Carrier, Goodman, Navien and Rinnai. We respond within one hour and quote you the same day at a flat rate that won't change once work begins. Every installation includes a detailed report and 1 year labour warranty!
- Trade
- HVAC contractor
- Business address
- 1655 Dupont St Ste 101, Toronto, ON M6P 3T1, Canada
- Telephone
- (647) 219-5661
- Website
- atassimechanical.ca
- Hours
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- Monday9:00 am - 7:00 pm
- Tuesday9:00 am - 7:00 pm
- Wednesday9:00 am - 7:00 pm
- Thursday9:00 am - 7:00 pm
- Friday9:00 am - 7:00 pm
- Saturday9:00 am - 4:00 pm
- 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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Ibrahim was a pleasure to deal with. Atassi Mechanical provided a very competitive quote and gave great recommendations for a furnace replacement. As we were upgrading from a mid-efficiency to high-efficiency in a 100+ year old Toronto row house, the install had some tricky challenges that Ibrahim worked through methodically. Ibrahim did much of the work himself and stayed late to ensure it was completed in a reasonable timeframe. He even worked on Saturday to get the job finished. Atassi’s crew were punctual, polite and clean. Ibrahim even turned up after hours to resolve a furnace fan issue. All is working great now and we are really happy with the work completed. Thanks so much!
Ross B.
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I had a really good experience with Atassi Mechanical. The service was professional, efficient, and the work was completed with great attention to detail. Communication was clear throughout the process, and everything was handled smoothly. I would definitely recommend them.
Jordao S.
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Very happy with the service from Atassi Mechanical. The team was knowledgeable, responsive, and professional from start to finish. They completed the work efficiently and made sure everything was in good working order. I would gladly use their services again.
Harrison F.
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Ibrahim was great to work with and did a good job. Would recommend.
Noah K.
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Great job, furnace replacement was clean, top quality and on time
M S.
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Really happy with my experience with Atassi Mechanical. Ibrahim replaced my furnace and made the whole process easy and straightforward. The guys were clean, friendly, professional, and did a great job with the installation. I also signed up for their maintenance plan, which is nice for the peace of mind. I’d definitely recommend them if you need furnace or HVAC work in Toronto.
Jamey H.
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First guy messed up our water heater, but Ibrahim came to fully fix it. Very nice, good service, would recommend!
Edgardo G.
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I recently had an issue with my tankless water heater, and this company delivered outstanding service from start to end. Their technician arrived on time and diagnosed the problem quickly. Their boss, Ibrahim explained everything clearly so we know exactly what was happening. Very professional and honest. I highly recommend them to anyone who needs a reliable water-heater repair.
Marivic G.
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Ductless air conditioner deep cleaning: Ibrahim was very quick to respond, provided clear pricing and description of his services and conducted all his work with care, precision and attention to detail. Due to family issues I had to reschedule the appointment a few times and he was very understanding and professional. He arrived when he said he would and was respectful of my property (took shoes off inside the house, turned off garden hose when he was done, wiped down surfaces that were dirtied during cleaning). I'll definitely call him again in the future for HVAC related services.
Ken L.
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Professional, efficient and skilled. Always.
Kimberley A.
About Atassi Mechanical
Atassi Mechanical’s furnace and heat-pump work
Atassi Mechanical says it has handled air-conditioning repair in Toronto since 1932. Its work includes furnace repair, air-conditioner repair, heat pumps, boiler replacement, tankless water heaters, in-floor heating, humidifiers, air purifiers, and maintenance.
The company describes both residential and commercial HVAC work. It also names central air-conditioner installation, ductless mini-splits, and commercial HVAC installation among its services. For installations, it says it provides a detailed report and a one-year labour warranty.
Equipment choices for Toronto properties
Atassi Mechanical names Mitsubishi, Lennox, Daikin, Carrier, Goodman, Navien, and Rinnai among the equipment brands it works with. The company says it selects heating and cooling equipment for the home rather than drawing from a standard package.
It offers indoor-air-quality work alongside heating and cooling service. The company also says financing is available and that it can assist with rebate paperwork. For emergencies, it says it is available 24/7.
Rating, reviews, and regular hours
Reviewers most often mention clear communication, prompt responses, careful installations, clean work areas, and furnace, water-heater, and air-conditioner service.
Regular hours run 9:00 am to 7:00 pm Monday through Friday and 9:00 am to 4:00 pm Saturday; Sunday is closed. Atassi Mechanical says it is fully licensed and insured.
The company says it can provide same-day quotes and respond within one hour.
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 Toronto
About Toronto
| Population | 2,794,356 (2021) |
|---|---|
| Average yearly snowfall | 121.4 centimetres |
Sources: Statistics Canada, 2021 Census. Environment and Climate Change Canada, Canadian Climate Normals 1981-2010.