Breathing low levels of the chemical can cause fatigue and increase chest pain in people with chronic heart disease. The technician should look at the electrical and mechanical components of appliances, such as thermostat controls and automatic safety devices. Chimneys and flues should be checked for blockages, corrosion, and loose connections. Individual appliances should be serviced regularly. CPSC recommends finding a reputable service company in the phone book or asking your utility company to suggest a qualified service technician.
Proper installation is critical to the safe operation of combustion appliances.
All new appliances have installation instructions that should be followed exactly. Local building codes should be followed as well. Vented appliances should be vented properly, according to manufacturer's instructions. Adequate combustion air should be provided to assure complete combustion. All combustion appliances should be installed by professionals.