Dupont Heating And Air Conditioning Ltd. has been in Service Since 1964 serving Toronto & GTA specializing in heating and cooling. We work on all spaces - residential, commercial and industrial - repairing and installing most air system makes and models. We'll fix or install your new furnace, boiler, fireplace, humidifier, air conditioner and so much more. We even install in-floor heaters, for a pair of happy feet on cold winter mornings. Call our experts at Dupont Heating And Air Conditioning. All our work is guaranteed. We also provide 24-hour emergency service as well as free estimates!