The only Gas Furnace Made In Canada. Napoleon manufacturers their renowned Gas Furnaces in Barrie Ontario. When your aging gas furnace is beyond repair, and you’ve been experiencing difficulty enjoying the level of comfort you’ve come to expect, then it may be time for a new Gas Furnace Installation. Metropolitan Heating & Air Conditioning Limited is committed to helping you stay comfortable through the cold winter months. We have been installing new Gas Furnaces in Greater Toronto East, Scarborough and Durham since 1979.