418e7449_Air_Quality___Mason_Mechanical__Appliances
[Fuel] Natural or Liquefied Petroleum Gas [Typical Potential Problems] Cracked heat exchanger; Not enough air to burn fuel properly; Defective/blocked flue; Maladjusted burner [Appliances] 
Central Furnaces Room Heaters Fireplaces
Indoor Air Quality - Mason Mechanical
Appliances