DeMarco Mechanical offers residential and commercial HVAC installation, repair, replacement, maintenance services, and more across the GTA and York Region: Downtown Toronto, North York, Etobicoke, Scarborough, Thornhill, Markham, Richmond Hill, Vaughan, Concord, Aurora, Woodbridge, Maple, King City, Newmarket, Stouffville, Pickering, Ajax, Whitby, Oshawa, and the surrounding areas.
Reviews ( 278 )
DeMarco Mechanical showed up fast during a furnace emergency and fixed the issue without upselling. Clear communication and fair pricing. Highly recommend!
They handled an HVAC install on my rental property and kept everything on schedule. Transparent, respectful, and dependable—great experience.
Our A/C broke during a heatwave and they had it running the next day. Friendly techs, great service, and no hidden fees. Super impressed!
Adrian from DeMarco Mechanical Services came out promptly and explained every step while repairing our gas line and installing a new AC unit. He took care to protect our home, even routing lines above the ceiling to avoid drywall damage. The installation was seamless and stress‑free—exactly what we needed. Highly recommend!
Adrian and team installed a new gas line and gas oven, then followed up with an AC installation the very next day. They were prompt, highly knowledgeable, and left everything spotless—no drywall damage, and every detail explained clearly. Their pricing was very competitive, and the whole process was utterly stress-free. I wouldn’t hesitate to hire them again!
After many years of issues with our ductless split AC… we decided to go with a new ductless split heat pump installation. The installation team was really good—they did a fantastic job, with great customer service and spotless cleanup afterward. Very happy with the level of service.
Adrian previously installed a new gas line and a new gas oven… I was so impressed with his professionalism, knowledge and the fact he took additional precautions to protect our property… he came to our home the next day, purchased the AC unit and made the whole process stress-free and seamless.
I had an issue with a gas leak in my home. Contacted DeMarco Mechanical and they came out right away, found multiple leaks and fixed everything. Got the gas back onto our house within a few hours. Really thankful—they are so professional and quick to respond.
After years of patchwork repairs on our ductless split system, we called DeMarco Mechanical. They provided a thorough inspection, offered a reasonable recommendation, and completed a quality heat pump installation. Their follow‑up service was top‑notch, and they left the entire place spotless. Excellent customer service from start to finish!
Adrian installed a brand-new air conditioning unit and impressed us with how cleanly everything was done—no damage to drywall, no mess left behind. He clearly explained how the system worked and answered all our questions. The installation was stress‑free, prompt, and competitively priced. Highly recommend!
When our home’s gas line needed repair, Adrian and his team responded right away and resolved the issue within just a few hours. They were extremely knowledgeable, thorough in explaining the problem, and handled everything with professionalism and care—plus, the pricing was fair. Couldn’t ask for better service!
DeMarco Mechanical was a lifesaver when our gas furnace gave out in freezing weather. Adrian arrived on time, wore full PPE during Covid, and clearly explained every step. Their professionalism and speedy response turned a stressful situation into a smooth fix.
Adrian’s hands-on approach is a breath of fresh air. He listens, explains all options without pressure, and ensures systems are engineered for efficiency. Trustworthy and skillful—just what HVAC service should be.
They installed a tankless water heater when ours failed. It’s been flawless. The workmanship was excellent, and Adrian’s recommendations were spot-on.
Quality preventative maintenance! DeMarco’s annual tune-up caught minor issues before they escalated, keeping our HVAC system efficient and worry-free all winter.
Adrian engineered the perfect system for our home — a new furnace and AC. The price was fair, work was meticulous, and the team was courteous. Highly professional from quote to cleanup.
Their AC installation was top-tier. They even hid mechanical components neatly, offered a smart thermostat, and showed me all energy-saving features. Clean, informative, and professional!
We had a tricky gas-line repair that no one would touch. DeMarco Mechanical scheduled us within 48 hours, gave a fair quote, and tested the repair carefully. Friendly, accommodating service – highly recommended.
After struggling with our old ductless AC for years, Adrian suggested a new heat-pump split system. His team installed it flawlessly, cleaned up thoroughly, and now our home stays perfectly cool year-round.
Nguyen Phuong Hai Quynh
James Ralston
D Smith
Mark Willdosen
Ali
Michael L Breen
Margarita Jose
A gas leak struck during COVID‑19. I called DeMarco Mechanical and Adrian was on site the next day, fully equipped and respectful of safety protocols. He walked us through everything, fixed the leak swiftly, and made the entire experience feel calm in a stressful moment.