• The Quality Heating & Cooling Service You Deserve

    Your family heating & cooling company. Providing lasting comfort to London, St. Thomas & Area with reliable service, top quality systems, and the “Best coverage in the industry” -Jamie Donaldson


Furnaces, Air Conditioners, Water Heaters, More

As London’s locally trusted heating and cooling company, we service, maintain, install and even design custom heating and cooling systems all around London & surrounding areas. For owners of new homes, old homes, multi-family residential and small commercial buildings.

Why Donaldson

Always Know When We’re Coming

We value your safety and time more than anything so contact us today to book a 2 hour arrival window for any service and receive a text and photo of your Technician when they’re on their way. Let’s make it happen!

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Warranties & Guarantees

Donaldson Heating And Air Conditioning warranties and guarantees were designed just for you. From our promise to always provide upfront pricing, standing by out work with our size & lifetime repair guarantee plus the True Care Protection on new equipment, we are here to help.

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Technicians At Donaldson Heating and Air Conditioning

All of our technicians work for us (we do not hire outside contractors), they are fully licensed and are specifically hired for their ability to provide exceptional service. Our entire team stands behind everything that we do.

Contact Us

Donaldson Heating and Air Conditioning

77 Bessemer Road
London, ON
N6E 1P9

519-439-HEAT (4328)


Monday – Saturday: 8am – 8pm
Closed Sunday

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