Customer Reviews

“Our furnace stopped working on the coldest night of the year. ZK Mechanical had a technician at our door within 90 minutes. Professional, honest pricing, and our heat was back on before midnight. Cannot recommend enough!”

“We got three quotes for a new high-efficiency furnace and AC combo. ZK Mechanical was the most transparent with pricing and offered the best warranty. Installation was clean and completed in one day. Very impressed.”

“Switched to a tankless water heater on their recommendation. Lower gas bills and endless hot water — exactly what they promised. The installation team was respectful of our home and cleaned up perfectly.”

“We signed up for their annual maintenance plan after our AC broke down last summer. The fall furnace tune-up was thorough — the technician even found a cracked heat exchanger before it became dangerous. Worth every penny.”

“Used ZK Mechanical for our office building's HVAC overhaul. They designed a system that cut our energy costs by 30%. Professional, on schedule, and the team was great to work with. Highly recommend for commercial jobs.”

“Our old water heater was leaking. They came same day, gave us options, and replaced it within a few hours. No pressure to upsell — just honest advice. We'll use them for all our HVAC needs going forward.”

“Best AC service in the GTA. Our central air wasn't cooling properly and the previous company couldn't figure it out. ZK Mechanical diagnosed a refrigerant leak, fixed it in under two hours, and the house has been cool ever since.”

“Had them install a ductless mini-split in our basement renovation. Clean work, proper permits, and they walked us through the thermostat setup. Great attention to detail.”

“Our whole family suffers from allergies. ZK Mechanical installed a whole-home air purifier and UV sanitizer. The difference in air quality is unbelievable. We can actually breathe properly now.”

“Called for a furnace tune-up and the technician was on time, polite, and thorough. He explained everything he was checking and gave me tips on filter changes. Simple, professional, fairly priced.”

“We needed our entire ductwork cleaned after renovations. The team was efficient and showed us before/after video of the ducts. Amazing how much dust was in there. Definitely notice better airflow now.”

“Replaced our 20-year-old furnace with a high-efficiency model. ZK Mechanical handled the rebate paperwork for us and our gas bills dropped significantly. Professional from start to finish.”