Open Monday-Friday: 8am-5pm
16700 Sideroad 17A, Sunderland, ON L0C 1H0
Need Emergency Service?
24 Hours, 7 Days a Week, 365 Days a Year!
Quality & Safety
Dedicated to High Standards
FAMILY OWNED SINCE 1982
Elevating Comfort Across Sunderland and Surrounding Areas
Since 1982, Harold's Heating & Cooling, a three-generation family business, has blended traditional craftsmanship with modern technology to deliver innovative comfort solutions year-round.
ALL-SEASON COMFORT
ECO-FRIENDLY OPTIONS
CUSTOM FABRICATION
24/7 EMERGENCY SERVICE
Our commitment to excellence, innovation, and reliability drives us to offer custom-tailored solutions that meet the unique needs of each client. From the moment you reach out to us, you'll experience the highest standards of customer service and professional expertise.
FAMILY OWNED SINCE 1982
Elevating Comfort Across Sunderland and Surrounding Areas
Since 1982, Harold's Heating & Cooling, a three-generation family business, has blended traditional craftsmanship with modern technology to deliver innovative comfort solutions year-round
ALL-SEASON COMFORT
ECO-FRIENDLY OPTIONS
CUSTOM FABRICATION
24/7 EMERGENCY SERVICE
As Carrier specialists, we excel in quality installations, repairs, and maintenance for all, distinguishing us as your trusted HVAC experts. Our commitment to excellence and versatility in handling anything gas-run, from heated driveways to heat pumps, sets us apart as your trusted local HVAC provider.
WHAT WE OFFER
Residential & Commercial Services
ADVANCED FURNACE SYSTEMS
Experience unparalleled warmth and efficiency in your home.
HEAT PUMP & MINI-SPLIT
Versatile heating and cooling for year-round comfort.
AIR CONDITIONING EXCELLENCE
Stay cool with our energy-efficient air conditioning solutions.
WATER BOILERS & TANKS
Hot water solutions that promise reliability and performance.
INDOOR AIR QUALITY
Enhance your home's air quality with our cutting-edge systems.
GEOTHERMAL SOLUTIONS
Tap into sustainable comfort with our eco-friendly geothermal systems.
40+ Years of Service
4.5 Star Rating
24/7 Emergency Support
100% Eco-Friendly Options
REAL STORIES, REAL SATISFACTION
Hear What Our Customers Think
The service I received was exceptional. The individuals that installed my air conditioner were clean and courteous. I would highly recommend Harold's Heating.
- Bev Primrose
Excellent service and quick response. They installed a new furnace and hot water tank for me as well as perform my service. Would recommend.
Thank you to Harold’s Heating for prompt and efficient service. We really appreciated JP’s attention to detail. His customer service and diagnostic skills are exemplary!
Had Carly out today! She did a very thorough cleaning and check for furnace and fireplace. Very good at explaining and communicating what she was doing, Great job! Thanks all!