"Since 1990 making your house feel like home"

Your Trusted HVAC Contractor in Alliston
Alliston is one of Canada’s fastest-growing communities, and its residents need a local HVAC company they can trust to handle their home comfort needs. Don’s Heating & Cooling opened a showroom in Alliston in 2014 and has been exceeding expectations for commercial and residential customers in the area ever since. We carry high-quality furnaces, water heaters, air conditioners, and more.
Our showroom is open six days a week, so you can browse our quality heating and cooling products and speak to one of our HVAC experts. You can also contact us at 705-435-5005 or request service online.
Get in Touch
Do you have any questions or want to ask for a quote? Fill out the eform below and we will help you out.
Don's Heating & Cooling
Hours
Services and Installations:
Monday - Friday: 9:00 AM - 5:00 PM
Saturday: 9:00 AM - 3:00 PM
Showroom Alliston:
Monday - Friday: 10:00 AM - 6:00 PM
Saturday: 9:00 AM - 3:00 PM
Why Choose Don’s Heating & Cooling in Alliston
Here’s what sets Don’s Heating & Cooling in Alliston apart from the competition:
Award-Winning Excellence
For three consecutive years, we’ve proudly received the prestigious Carrier President’s Award, a testament to our commitment to customer satisfaction, HVAC expertise, and operational excellence.
Guaranteed Craftsmanship
We stand behind our work with a Lifetime Workmanship Guarantee. Our licensed and apprentice-trained technicians—never subcontractors—ensure every job meets the highest standards of quality and care.
Certified Technicians for Your Safety
All our technicians are certified by the Technical Standards and Safety Authority (TSSA), ensuring the safe and efficient operation of your HVAC systems, including boilers and other heating equipment.
24/7 Emergency Service
HVAC emergencies don’t follow a schedule, which is why we’re available around the clock in Alliston. Call us anytime at 705-435-5005 for reliable assistance.
Proudly Supporting the Alliston Community
As a locally owned and operated business, we’re deeply committed to giving back to the Alliston community. We proudly support local organizations like My Sister’s Place and Stevenson Memorial Hospital, strengthening the community we serve.
The Communities We Serve
While Don’s Heating & Cooling showroom is in Alliston, we’re also proud to serve residential and commercial customers throughout New Tecumseth and nearby communities:
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New Tecumseth Township
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Beeton
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Tottenham
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Many other communities in southern Simcoe County
We also offer prompt, 24/7 emergency service to customers in these areas through our Alliston office at 705-435-5005.

Heating and Cooling Services
Don’s Heating & Cooling offers sales, installation, repair, and service for all your home comfort needs. Here are the products and services we provide:
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Furnaces - We’re a Carrier factory-authorized dealer of high-efficiency furnaces, the highest-quality units on the market. We also offer maintenance and repairs to meet warranty requirements.
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Air conditioners - We offer single air conditioner units and entire Carrier systems. We also provide air conditioner maintenance and repairs.
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Heat pumps - Heat pump systems provide versatile heating, cooling, and humidity control to keep your home cooler in summer and warmer in winter.
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Ductless systems - Ductless mini splits, including ductless air conditioners and heat pumps, can fit in any space, even where traditional HVAC units don’t.
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Water heaters and boilers - Consider a tankless water heater that only heats water on demand, giving you endless hot water.
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Indoor air quality - We carry air exchangers, air purifiers, and humidifiers to ensure the best air quality in your home. We also provide maintenance services for your air and water quality units.
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Fireplaces - Choose from direct-vent fireplaces, gas and propane inserts, stoves, and electric fireplaces. Service your gas fireplace every one or two years.
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Barbecues - We have a grill for every application and offer a variety of full-size and portable models. We also repair and provide warrantied replacement parts for most brands.
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Central vacuums - A central vacuum system carries dust and allergens away from your living areas to the canister of your unit. You’ll never have to replace a filter.
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Outdoor living - We carry a wide selection of outdoor gas fireplaces, patio heaters and patio tables to your enjoy outdoor living.
Sign up for our pre-paid and pre-scheduled service maintenance plans, and you’ll never have to worry about booking your next appointment!
Testimonials
Join the many satisfied homeowners who trust Don’s Heating and Cooling for their HVAC needs.
“Brian was very helpful. Brendan, the installer and his helper were very neat and careful with all the work.. Answered all our questions pleasantly. Lori and Katie in the office were more than helpful also.”
Very Helpful
- Elaine B.
“Excellent service. Price great. Moved to a second new house further North and still used them. Go beyond expectations. Extremely knowledgeable, courteous and friendly. Highly recommend this company.”
Very Helpful
- Rachel H.
“Very friendly and quick service given. Like the text notification knowing tech was on the way. Thank you.”
Like the Text Notification
- Vic S.
“Prompt, professional, very knowledgeable. Took the time to explain what needed replacing and why. Having the Heating Protection Plan has paid for itself. Thanks again Sam 👍🏻”
Prompt, Professional, Very Knowledgeable
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“Thank you for the quick response to no heat from the furnace all night and 60F degrees inside and -22c outside. I can always count on you to save us with superior customer service. Feeling the warmth from the furnace now! As always, highly recommended. Thank you to Don and Sam”
Feeling the Warmth from the Furnace Now!
- Sherri T.
“Excellent work. Went above and beyond to explain everything including other systems that weren’t being serviced. Will definitely call them back to clean out our fireplaces and to look after any furnace or air conditioning needs down the road”
Went Above and Beyond
- Jackie T.
“From urgent call to furnace backup and heating out home – Chris was in and out in under an hour and 15 minutes. Incredible service and met any/all COVID protocols. Cannot thank you enough.”
Incredible Service
- Dave P.
“Don came over to look at my 20 year old furnace and we both decided that it was a good time to have it replaced as winter was approaching. We went with a Carrier which we previously had and has served us well over the years. Don was able to get me a very generous discount from Carrier as the part that the old furnace needed was heavily backordered. A few days later Ashley came with his partner and had it installed in about 4 hours and they were very professional and very nice people. Very happy with the whole process!!”
Very Happy with the Whole Process!!
- Jerry J.
“We purchased a barbeque and they delivered it assembled and in pristine condition right to our door as promised. They provided competitive pricing and we have heard from others in the area their service is highly recommended should we ever need it. We are doing our best to support local businesses and they make it easy to choose them as our preferred store and dealer!”
We Are Doing Our Best to Support Local Businesses
- Markyintoronto L.
“Chris did an excellent job; arrived on time; performed the work and sent paperwork when done. Really like Don's Heating & Cooling and have had Chris tune up our furnace for winter more than once over the years! Always an excellent experience with COVID protocols in place this year. Thank you Chris; nice seeing you again.”
Chris Did an Excellent Job
- MacRae, Noreen

Contact Your Local HVAC Company in Alliston
Don’s Heating & Cooling is your award-winning HVAC contractor for Alliston residents and businesses. Visit our Young Street showroom in Alliston and browse the products we carry. Contact us online to schedule an appointment.