The Best Toronto Furnace, Air Conditioning & Heating Service Contractors When your a customer of Laird & Son you become our reason for doing what we do. Ensuring your Comfort and Safety. For over 60 years Laird and Son Heating and Air Conditioning has been there to take care of our customers across the GTA, serving the Downtown Toronto region, Markham, Scarborough, Richmond Hill and North Toronto. If you are outside of our service area please call us and we will do our best to help! For over three generations, Laird & Son has stayed true to its founding principle: making sure that every customer is completely satisfied. Emergency Furnace, Air Conditioning and Heating Services We are a family owned and operated company and one of the most experienced HVAC companies in Toronto. Laird & Son is the oldest independent Lennox dealer in Canada and we operate on values that place the customer first by providing prompt 24 hour emergency service for furnace repair, boiler repair, air conditioner service and installation, and tankless water heater repair. Laird & Son Fuels Ltd. can provide service on oil furnaces, new tank installations as well as automatic fuel delivery. We take pride in carrying the best equipment for fair prices. Our reputation precedes us with 90% of our business resulting from referrals and existing customers. We love to do a great job, read your online reviews, see our customers smile, and then hear the neighbours call us about the friendly HVAC contractor or prompt air conditioning service.