Durham Region's Trusted Heating & Cooling Expert
- Based in Oshawa - service from Pickering to Bowmanville
- Expert with Durham’s older homes and new builds
- Backed by decades of hands-on HVAC experience
- Licensed and insured to ensure your safety

Hi, I'm Zack - owner and operator of HVAC ZACK.
With over 15 years in the heating and cooling industry, I’m proud to bring hands-on expertise, meticulous workmanship, and a commitment to fair, honest service to every home I work in across Durham Region.
As a licensed and insured HVAC professional, I specialize in heat pumps, furnaces, air conditioning, tankless water heaters, and more — treating every project like it’s for my own family, because doing right by my clients matters most.
Services
Heating & Cooling Services
Everything you need from heating your house in the winter, cooling it in the summer and making it comfortable in-between!
EXCELLENT Based on 88 reviews Posted on Smriti AMarch 17, 2026Trustindex verifies that the original source of the review is Google. We've had Zack and his team by a few time recently. He's always responsive, polite and friendly. He's very knowledgeable and takes the time to explain what's happening and what he's done to resolve the issue. Even after a busy day, he's fit us in and helped us out. Thanks Zack!Posted on Samuel MarmaraMarch 3, 2026Trustindex verifies that the original source of the review is Google. Very honest and his workmanship was amazing.Always was there if a question was needed to be answeredPosted on Robert MarleauFebruary 14, 2026Trustindex verifies that the original source of the review is Google. We recently had a heat pump installed in our garage along with a propane heat blower and we couldn't be happier with the results. The entire process was smooth and start to finish. Zack was knowledgable punctual and took the time. Page explain how everything works and how to get the best performance out of our system. The heat pump keeps the space at a comfortable consistent temperature and a propane heater is a great back up for a really cold days. Insulation was clean and well organized, and I left the workshop spotless when they were done. You can tell they take pride in their work and care about doing the job right. If you're looking to make your garage useable year-round I definitely recommend this set up in this crew. Great. overall experience!Posted on Maria RomanukFebruary 3, 2026Trustindex verifies that the original source of the review is Google. Zack has been reliable, honest and, I recommend his services to anyone. He is professional & I trust him with all his work:)Posted on M NaccaratoJanuary 14, 2026Trustindex verifies that the original source of the review is Google. We are very happy with our heat pump installation. Zack is professional, thorough and very easy to deal with.Posted on Greg McHaleJanuary 9, 2026Trustindex verifies that the original source of the review is Google. When I called HVAC Zach he was polite and straight forward. Our furnace decided to quit on a mid December Thursday. Even though Zach was busy he showed up on a Saturday morning and our new furnace was installed and running within a few hours. Being a small local business his quote beat the larger companies by a lot!! We will be calling Zach in the future when our old air conditioner inevitably quits on us. Thanks Zach!Posted on INEX General contractingJanuary 7, 2026Trustindex verifies that the original source of the review is Google. Zack goes above and beyond with his trade, innovating and problem solving practical solutions for any project at hand. Any time we have used him, he has offered alternate solutions, advice. And critical thinking as a part of his services alongside excellent craftsmanship. If you need a reliable HVAC company, look no further than HVAC Zack!Posted on Shreeya HaridasDecember 6, 2025Trustindex verifies that the original source of the review is Google. Super responsive, efficient and well priced. Zack was pleasant to speak with from the first go. His budget estimate for the project was lower than others - the actual cost was further lower than the estimate. Josh from the team arrived timely and did a fantasic job. Really appreciate having a real genuine person managing a good business in times of inflated businesses. Pleasure doing business.