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CALL NOW! 905-541-7103


Williams Bros Heating & Cooling Ltd. is First Nations Family Owned and operated on Six Nations of The Grand River reserve with 30 years of experience in the HVAC industry. Specializing in residential heating and cooling services, including estimates, installation, service and repair. Our team of experts is dedicated to providing top-quality service to our customers. Contact us today to learn more about how we can help you with all your HVAC needs.

Founded by Brian Williams in 2007, formerly known as B.D. Williams Heating & Cooling. As part of a succession plan; to continually provide expert and courteous service to Ohsweken, Ontario (Six Nations of The Grand River) and surrounding communities. 

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With over 20 years of experience you can trust us to provide a solution for you.

TSSA Certified

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We also offer emergency repair services to ensure that your home stays warm in the winter and cool in the summer.


At Williams Bros Heating & Cooling Ltd., we are committed to providing our customers with the best services possible. Contact us today to schedule your HVAC appointment and experience the Williams Bros difference for yourself!

Services We Offer


  • Furnaces

  • Gas Line

  • Gas and Electric Fireplaces

  • Installation

  • Maintenance

  • Repair

  • Cleaning


  • Air Conditioners (A/Cs)

  • Heat Pumps

  • Ductless

  • Installation

  • Maintenance

  • Repair

  • Cleaning

Air Quality

  • Heat Recovery Ventilators (HRVs)

  • Dryer Vents

  • Range Hoods

  • Air Filters

We service anything, We Install these Brands

Get in Touch

PO Box 646,

Ohsweken, ON, N0A1M0


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