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 80 reviews Posted on Leeannebrunne BruneiDecember 4, 2025Trustindex verifies that the original source of the review is Google. Had a heat pump installed. Perfect from beginning to end. Best service bar none!Posted on Adam McLarenDecember 2, 2025Trustindex verifies that the original source of the review is Google. Zack is a constant professional and is always willing to help. He's now done HVAC work in 2 houses for me and he's been a pleasure to work with.Posted on Shreeya HaridasNovember 28, 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. The job was timely and well done. Really appreciate having a real genuine person managing a good business in times of inflated businesses. Pleasure doing business.Posted on BarbaraNovember 28, 2025Trustindex verifies that the original source of the review is Google. Both technicians were professional and completed the task effectively. I phoned and a technician was at my home within a few hours. He was able to determine I had no problems and my gas was restored.Posted on Nick ManosNovember 20, 2025Trustindex verifies that the original source of the review is Google. Extremely knowledgeable and reliable. His workmanship was flawless and professionally handled. Highly recommended!Posted on Sylvia LandOctober 10, 2025Trustindex verifies that the original source of the review is Google. Reliable, competent and hard working.Posted on CoreyOctober 2, 2025Trustindex verifies that the original source of the review is Google. Zack and his crew were fantastic! They removed our old hot water tank and installed a new top-of-the-line tankless water heater quickly and efficiently. Zack was knowledgeable, easy to communicate with, and his pricing was very competitive. Couldn’t be happier with the service and happy to not have to rent a tank anymore. Will be using HVAC Zach again in the future for some upgrades to our cottage. Thanks again guys!Posted on Michelle RobertsOctober 1, 2025Trustindex verifies that the original source of the review is Google. Zack was amazing - he was able to fit is in quickly and diagnosed/fixed our furnace right away.Posted on MSeptember 27, 2025Trustindex verifies that the original source of the review is Google. Hvac Zac is a true professional, he did all new duct work for our home remodel and garage conversion, and also saved us thousands of dollars by being a trustworthy contractor. The motor on our furnace burnt up and died on us randomly, he was kind enough to look the part up, saw it was still under its warranty period and got us a free replacement. Any other contractor would have just upsold us on new parts or furnance, but he was honest! A+++ recommend his work!Posted on Laura LongmanSeptember 9, 2025Trustindex verifies that the original source of the review is Google. Zack was easy to communicate and coordinate with. Very pleased with the install and would recommend him.