Parts of your air conditioning system (such as your furnace electrical controls and blower) also operate in the fall, winter and spring to heat your house. That means a second inspection will be done as mentioned in items 3, 10, 11, 13, 14, 15 from the Maintenance Checklist: A/C. In addition, the following furnace items are checked for the winter months:

1. Heat Exchanger - Inspected for cracks & deterioration
Heat exchangers can develop cracks with age. If they exist, there is a risk of serious illness from the toxic fumes emitted.

2. Burners - Removed & cleaned if necessary
Dirty burners can cause poor combustion, soot, condensation, and will shorten the life of the furnace. You pay for useful heat that ?goes up the chimney? instead of going into your house.

3. Fan Switch - Checked & adjusted
A fan switch that is not properly adjusted can waste energy and cause nuisance fan cycling

4. Pilot & Pilot Assembly - Cleaned & adjusted as necessary
Weak or dirty pilots can easily be extinguished causing the furnace to shut down

5. Safety Controls - Operationally inspected
Safety controls that do not operate can cause dangerous problems.

6. Gas Line - Leak checked from the furnace shut off valve to the burners
Undetected gas leaks are dangerous.

7. Combustion Air - Openings will be checked
Blocked or restricted combustion air openings can be dangerous.

8. Flue Pipe - Inspected
Flue pipe corrosion or leaks are dangerous.

9. Temperatures & Performance - Recorded
An accurate record of vital data can indicate potential problems that can be eliminated.

10. Panels - Secure all panels
Loose panels can increase operating costs and cause either a shutdown or a dangerous condition.