We are a family owned and operated company serving the Greater Toronto Area for the past 75+ years. This experience, paired with our dedication to quality and over-delivering on our service promise, has established us as one of the best heating, furnace and air conditioning companies in Toronto.Laird & Son Heating & Air Conditioning is the oldest independent Lennox dealer in Canada and we operate on values that place the customer first by providing swift, emergency service for boiler repair, furnace repairs, tankless water heater repair, and air conditioning / heat pump service and installations.