Rosati HVAC
HVAC contractor in Hamilton, ON.
In Rosati HVAC's own words
Rosati HVAC is a trusted HVAC expert offering reliable heating, cooling, and gas line services for homes and businesses. Serving the greater Hamilton area with fast, professional solutions year-round.
- Trade
- HVAC contractor
- Business address
- 101 Barons Ave S, Hamilton, ON L8K 2Y5, Canada
- Telephone
- (905) 818-4327
- Website
- rosatihvac.ca
- Hours
-
- Monday8:00 am - 5:00 pm
- Tuesday8:00 am - 5:00 pm
- Wednesday8:00 am - 5:00 pm
- Thursday8:00 am - 5:00 pm
- Friday8:00 am - 5:00 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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Mark is the best in the business. Recommend him to all my clients and the only call I make for my own home’s HVAC needs. Experienced and as important, honest!
Sean D.
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If you want an honest and hardworking HVAC tech, Mark is great . I’ve used his services multiple times - new installs, upgrades, and most importantly service calls . He has fair pricing, quality of work is top notch, stands behind his work and is a great guy ! Strongly recommend him for any needs HVAC related.
Phil F.
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Echoing what other reviewers have said. Friendly and helpful! Came quickly during the heat wave to put in a new AC. His price was very fair compared to other companies I called. Has many years of experience. Will be calling back for any future HVAC needs.
karim L.
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Rosati HVAC was able to diagnose and fix the issue with my air conditioner effectively in this heatwave. I would highly recommend using this company for any of your future HVAC needs.
Matt B.
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We’ve had Mark Rosati help us out with two separate jobs — one for our fireplace and another for our air conditioner — and both times he was awesome. For the fireplace, he figured out the issue quickly and had it working again just in time for the cold weather. A few months later, our AC stopped working during a heatwave, and we didn’t think twice about calling Mark again. He showed up on time, explained everything clearly, and had it fixed fast. He’s friendly, professional, and really knows his stuff. Highly recommend Mark if you need someone reliable.
Ryan L.
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Excellent service! .Mark arrived on time, was very professional, and did a thorough job with our summer AC tune-up. Highly recommend for reliable and friendly service!
Anna P.
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Mark was great to work with from coordinating a time to put in our gas line for our bbq to the actual work. The gas line looks great too! Highly recommend Mark and Rosati HVAC.
Kate S.
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So happy with my experience at Rosati Hvac. Mark really knows what he's talking about and you can tell he genuinely cares about doing quality work. He's the only person I'd trust with my hvac needs! 10/10 highly recommend
Vanessa T.
About Rosati HVAC
Air conditioning work from Rosati HVAC
Rosati HVAC describes its air conditioning work as new installations, repairs, and routine maintenance. The company also names heating, cooling, and gas-line services for homes and businesses in the greater Hamilton area.
Its website includes commercial HVAC work and maintenance support among its services. It also offers indoor-air-quality work through Heat Recovery Ventilators (HRVs) and Energy Recovery Ventilators (ERV), which improve ventilation and indoor air quality.
Hamilton HVAC work and customer feedback
Rosati HVAC has a 5.0 rating from 8 reviews. Reviewers most often mention Mark Rosati's communication, punctuality, technical knowledge, and work on air conditioners, fireplaces, gas lines, tune-ups, installations, upgrades, and repair calls. Several also mention fair pricing, clear explanations, and returning for later work.
The business is open Monday through Friday, 8:00 am to 5:00 pm. Hamilton's Environment Canada normals for 1981-2010 show a mean temperature of 7.9°C, with an average high of 12.8°C and average low of 2.9°C.
Ventilation and maintenance options
For ventilation projects, Rosati HVAC names HRV and ERV equipment rather than presenting indoor air quality as a general add-on. The company says it helps customers choose an option and provides installation and maintenance support.
The business also identifies commercial HVAC alongside its residential work, while its air-conditioning services cover installation, repair, and routine maintenance.
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.