Business Details
41 Years
experience
Emergency
services
Trusted Residential HVAC Services in Stouffville, ON
Unionville Heating & Air Conditioning has served residential clients in Markham, Unionville, Stouffville, and surrounding areas for over 40 years. Established in 1985, our company prioritizes quality installations, repairs, and maintenance for heating, ventilation, and air conditioning systems. Our team of certified technicians combines technical expertise with personalized service, ensuring systems operate efficiently and safely. We emphasize preventative maintenance programs to extend equipment lifespan and prevent emergencies. With a 98.7% customer satisfaction rate and recognition as a Readers Choice Award winner for 22 years, we maintain a reputation for reliability and community trust.Our commitment to environmental responsibility includes recycling old materials and offering energy-efficient solutions. We provide 24/7 emergency support and guarantee workmanship quality, backed by 15,000 satisfied customers.
Services
Furnace Repair
AC Maintenance
Thermostat Installation
Water Heater Repair
Air Quality Solutions
Ductwork Design
Gas Fireplace Service
UV Purifier Installation
Humidifier Services
Emergency HVAC Repair
Details
- Year established: 1985
Highlights and features
- We have over 40 years of experience in residential HVAC services.
- Our technicians guarantee first-time repairs with certified expertise.
- We maintain a 98.7% customer satisfaction rating from 15,000+ clients.
- Emergency services available 24/7 with live telephone attendants.
- We prioritize eco-friendly recycling and energy-efficient solutions.
What people say
Exceeded expectations
Prompt service
Professional crew
Energy-efficient solutions
Reliable technicians
Services
Furnace Repair
Our certified technicians diagnose and fix furnace issues promptly, ensuring safe and efficient operation. We handle all brands and models, providing same-day emergency repairs. With preventative maintenance options, we help homeowners avoid breakdowns during critical heating seasons.
AC Maintenance
Professional air conditioning maintenance extends system lifespan and improves energy efficiency. Our technicians clean coils, check refrigerant levels, and optimize performance. Annual tune-ups prevent summer breakdowns and reduce energy costs for homeowners.
Emergency HVAC Repair
Available 24 hours a day, our emergency repair team responds promptly to heating and cooling crises. Trained technicians carry common replacement parts for immediate fixes. We prioritize restoring comfort during extreme weather conditions with transparent pricing.
Water Heater Repair
We service both traditional tank and tankless water heating systems. Our maintenance includes sediment removal, pressure checks, and safety inspections. For aging units, we provide replacement recommendations with energy-efficient models.
Air Quality Solutions
Our air purification systems reduce allergens and improve ventilation in homes. Services include UV purifier installation, humidifier setup, and HRV maintenance. We address specific climate challenges in cold regions to maintain healthy indoor environments.
People
John St Germain
President
Leading the company since its 1985 founding, John St Germain oversees operations and strategic direction. With decades of HVAC experience, he maintains focus on customer satisfaction and community engagement.
Dave Mainland
Chief Operations Manager
Managing daily operations, Dave Mainland ensures service quality and technician training. His 20+ years in HVAC leadership support the company's commitment to technical excellence and timely service delivery.
Eric Ranchigoda
Service Manager
As service manager, Eric Ranchigoda coordinates emergency responses and preventative maintenance schedules. His team leadership ensures consistent service standards across all residential HVAC solutions.
Nick Russo
Installation Technician
Nick Russo specializes in HVAC installations, bringing technical precision to every project. His hands-on expertise ensures proper system setup for optimal performance and energy efficiency in residential settings.
Brenson Anistan
Service Technician
Brenson Anistan provides prompt repair services, earning recognition for customer service during emergency calls. His technical skills address complex HVAC issues while maintaining clear communication with homeowners.
Questions
What HVAC services are available in emergencies?
We offer 24/7 emergency furnace and AC repair with live attendants. Technicians respond promptly to heating/cooling crises, prioritizing safety and system restoration.
How can I maintain my HVAC system efficiently?
Annual preventative maintenance includes coil cleaning, filter replacement, and system checks. Our We Care program provides reminders and priority service for regular upkeep.
Do you service all HVAC brands?
Yes, we work on all brands including Goodman, Aprilaire, and Ecobee. Our technicians have experience with various systems for repair, maintenance, and installation.
What areas do you cover?
We serve Markham, Stouffville, Unionville, Pickering, Ajax, Whitby, Oshawa, Brooklin, and Aurora. Emergency services extend to surrounding regions during critical weather.
How do I schedule HVAC installation?
Contact us via phone or website to discuss needs. Our team provides quotes, recommends appropriate systems, and schedules installations with minimal disruption to homeowners.
Reviews (7)
Mpd Home
Feb 02, 2022
Report
I've been using UHAC for more than 20 years, and they didn't disappoint when I suddenly found a large unexplained puddle in my furnace room at 10pm on a Sunday. Even that late at night they had a tech available to consult, and he texted me through shutting off the dehumidifier until they could get someone out there. By 8am Monday they were on the phone arranging an appointment, and a tech was there by 11am. Just a great business, a real delight to deal with.
Tariq B.
Jan 26, 2022
Report
My home was without heat for over 14 hours during an "extreme cold alert" and I tried to contact my HVAC provider, Enercare, to help me with this issue as it was -25 degrees outside and the temperature in my house dropped to 10 degrees. I called Enercare 3 times and nobody responded (despite me paying additional costs for a heating and cooling maintenance plan for 2 years) and there was no sign they were going to send an Enercare technician. I was fed up and my family was freezing so I contacted Unionville Heating, and John, the president of this company, picked up IMMEDIATELY. He ensured he would
Tony Choi
Jan 24, 2022
Report
Jeffery came to investigate my furnace problem. Came at exact time as promised. Very friendly and took time for a thorough inspection. Explain to me what he was doing as I was with him (while maintaining social distancing). I was very impressed by him letting me know what was happening and how he went about locating my furnace problem. My problem has not recurred and now I hardly notice my furnace running after his furnace fix. I have been their satisfied customer for more than 30 years. Furnace is crucial to house living and being responsive to emergency calls and living up to its promises are
Shelley Cappuccio
Jan 17, 2022
Report
-22 outside, 15c inside - Michelle was our first contact at the office and she quickly sent Todd who was able to repair our furnace. Todd and his assistant were efficient, professional and very helpful about what needed to be done to get heat in our home when it was -22c. We need a new furnace, but it is repaired until we have the new one installed, also purchased from Unionville Heating & Air Conditioning. Very helpful, knowledgeable about their product and were able to fix our furnace (for now!) right away. New one gets installed next week.
Paul Marks
Jan 13, 2022
Report
We had a furnace failure at my mothers house so I called our "Old Reliable" HVAC company - Unionville Heating. They were there in a few hours, repaired the issue quickly and cleanly as usual. Pricing was quite reasonable. I've been used them several times over the years and have never been disappointed.
Diesel C.
Jan 12, 2022
Report
Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
I needed repairs done to my natural gas line. Spoke to Eric, who provided a quote and time they would have someone out. They arrived on time and work was completed in less than 1hour. All of this done on one of the coldest days (-24c). Thank you for wonderful service under the circumstances!
I needed repairs done to my natural gas line. Spoke to Eric, who provided a quote and time they would have someone out. They arrived on time and work was completed in less than 1hour. All of this done on one of the coldest days (-24c). Thank you for wonderful service under the circumstances!
Doug Vw
Jan 10, 2022
Report
When do you need a new furnace? When its the coldest outside, of course. The Staff at Unionville Heating and Air Conditioning are a pleasure to deal with. Very professional and helpful. My new furnace installation was done very efficiently and more than exceeded my expectations. Dave consulted with me before the installation. He was able to answer all my questions about how the install day would happen. It was very clear to me that Dave and the Staff have done this kind of work before. I was very impressed with Nick and Daves work ethic. They wasted no time on installation day. Every task
