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 68 reviews Suzanne PeatAugust 1, 2025Trustindex verifies that the original source of the review is Google. The Best! HVAC ZACK was originally recommended to us by a colleague. He rescued us last summer and rescued my Mother and Brother this summer! Respectful, responsive and reasonable! Kind and considerate. We would recommend HVAC ZACK over and over again. Laura BaileyJuly 31, 2025Trustindex verifies that the original source of the review is Google. Zack and his apprentice are extremely professional, reliable and honest. My husband and I are really happy with HVac Zack and highly recommend them. Zack takes pride in ensuring him and his team provide a great service. Thank you Zack! Wilma KulykJuly 24, 2025Trustindex verifies that the original source of the review is Google. We heard about Zack last year and asked him to come to our home for a cleaning. We spoke to him about the terrible air-flow and circulation both summer and winter. Zack recommended HVAC repairs to improve our airflow. We are so pleased with his work, and the difference in our home is incredible. Thanks Zack for your great service!!! Sureshkumar RavindranJuly 17, 2025Trustindex verifies that the original source of the review is Google. Zack is amazing and he doesn't take shortcuts. He explains everything and ensures 150% effort is put in his work Cole FoleyJuly 16, 2025Trustindex verifies that the original source of the review is Google. Hvac Zach did an amazing job installing our new air conditioner. He was respectful, clean, and knowledgable. The price was affordable and I was very satisfied with the whole experience. Thanks Zach! Stephen JonesJuly 14, 2025Trustindex verifies that the original source of the review is Google. Been working with Zack for years. Always dependable and fair. Laurie MayJuly 3, 2025Trustindex verifies that the original source of the review is Google. Zack was there when he said. He did an excellent job on a rush basis. He's professional, clean and most of all trustworthy. Thank you again Zack Karen PetersonJuly 3, 2025Trustindex verifies that the original source of the review is Google. I reside in a newly custom-built home, and my Trane air conditioning unit malfunctioned during the latest heatwave. I reached out to the technicians who installed the system, but they were unable to accommodate me for five days. I contacted Zack, and despite being extremely busy during that period, he took the time to come out, diagnose the issue, and resolve it promptly. His philosophy is to assist his clients one at a time to the best of his ability. He is diligent, trustworthy, and fair. What more could one ask for? Jeffrey McAlpineJune 22, 2025Trustindex verifies that the original source of the review is Google. Zack was incredible and helped my family with our air conditioner when we really needed the help! He was professional and easy to work with! I would highly highly recommend him and his company! I have had lots of service people help me out since becoming a homeowner and he has been one of the best! AGX PropertiesJune 17, 2025Trustindex verifies that the original source of the review is Google. HVAC ZACK responded promptly to resolve a problem with my air conditioner. He arrived at the agreed-upon time, identified the problem with a quick diagnostic and resolved the issue within an hour. Highly recommend Zach!!