Furnaces London Ontario

 London’s Premier Furnace Replacement Services

You depend on your furnace to keep your home or business comfortable and warm during the winter months. So, when your furnace reaches the point where it becomes too costly to operate or repair, you’ll need a reliable HVAC contractor to come in and replace it. That’s where we come in. At Donaldson Heating and Air Conditioning, we offer furnace replacement services throughout London and surrounding area.


 Why Choose Donaldson Heating & Air Conditioning?

Restoring Warmth to Homes & Businesses

We understand that a working furnace is something you simply cannot function without. So, when the time comes, we will do our best to replace it with a new high efficiency furnace quickly with our 24/7 emergency services and 2-hour arrival window, without compromising on quality. When you buy a new furnace from Donaldson Heating & Air Conditioning, we’ll ensure that your system is sized correctly, installed properly, and set up to maximize the efficiency of the equipment. You can trust Donaldson Heating and Air Conditioning for a replacement furnace model that will restore warmth to your home or business.

 Furnace Replacement Warranty: Peace-of-Mind Guaranteed

Each of our furnaces come with a company-backed 10-year parts and labour warranty. Our warranty ensures that anything not directly related to a maintenance issue is fully covered, with no processing fees or diagnostics. To ensure that you receive the highest levels of efficiency, we also include the first-year maintenance on all of our furnaces. Want peace-of-mind for longer? Learn more about our True Care Program today! The program has an $8,000 value for an additional $23.25 per month with the purchase of any furnace or furnace and air conditioner system.

The Donaldson Heating & Air Conditioning Guarantee Certificate


√ We Value Your Home
√ We Value Your Safety
  √ We Value Your Satisfaction
√ We Value Your Time
  √ Lifetime Replacement
√ Upfront Pricing
√ “True Care” 15 Year Guarantee



 What Customers Are Saying About Donaldson Heating & Air Conditioning

“Can’t say enough about Donaldson Heating and Air. I have had them several times through renovation and service calls. I thought I was prepared to purchase a new furnace and after looking it over, the owner actually told me it wasn’t necessary and I was blown away by the honesty and service.” – Charles

The True Care Protection Program 

√  15-Year System Coverage
√ Lifetime HVAC Maintenance Checks
√ Lifetime Annual Filter Replacement
√ 5″ Filter Rack Included with Installation
√ Wifi Thermostat Included with Installation
√ Priority Booking

View our Specials page to see what we have on offer.

Check Out Our Furnaces for Sale, Request a Quote, and Learn More About Your Options for a Furnace Replacement Today.

Our Furnace Manufacturers

Trane