1.

Start unit 

Essential to check operating efficiencies and comfort conditions.

 2.

Inspect flue and diverter

Ensures safe operation. Flue pipe corrosion or leaks are dangerous. 

 3.

Clean interior of vestibule

Provides safety.

 4.

Clean pilot assembly

Saves money.

 5.

Adjust pilot

Saves unnecessary & costly service calls.

 6.

Check thermocouple

Provides safety and helps prevent costly emergency service calls.

 7.

Clean burners 

Dirty burners prevent gas from being burned properly & efficiently.

 8.

Adjust burners

Increased efficiency & fuel savings.

 9.

Set gas manifold gas pressure

Provides safety, helps prevent costly repairs .

10.

Set burner air adjustment

It is important to have a properly adjusted furnace for fuel economy and system effectiveness otherwise useful heat that you have paid for goes up the flue. 

11.

Check gas valve operation

Provides safety and prevents costly emergency service calls.

12.

Test for gas leaks

Safety check.

13.

 Check thermostat 

Defective or improperly calibrated thermostat affects comfort and operating costs.

14.

Check heat anticipator

Promotes comfort in home; helps prevent costly service calls.

15.

Check thermostat contacts

Saves money; increases comfort.

16.

Check safety devices

Inoperative safety controls can cause dangerous problems.

17.

Check fan control

When properly set, avoids wasting heat and improves comfort conditions.

18.

Check limit control

Keeps unit in safe operating condition.

19.

Inspect heat exchanger for leaks

Safety check for possibility of creating carbon monoxide

20.

Inspect combustion chamber 

Saves money on fuel bills and promote safety and helps eliminate expensive repair.

21.

Check blower wheel

A clean blower lengthens motor life.

22.

Check blower motor and lube

Extends life, saves money, prevents failure.

23.

Check for belt tension and align

Avoids costly service calls, saves money on utility costs.

24.

Check and secure all panels

Newer systems have a blower door safety switch and will not operate if door is not properly in place.

25.

Check air filter 

Dirty air filters increase operating costs.

26.

Check furnace wiring

Extends life of system, ensures safety.

27.

Check noise and vibration levels

Increases comfort, can extend life of system.

28.

Check for combustible materials around furnace

Keeps the unit in safe operating condition.

29.

Check for combustion air 

Blocked or restricted combustion air openings can be dangerous.

30.

 Make final operation test

To make certain that everything is working just the way it should.

31.

Advise improvements if needed

It allows you to gauge effectiveness, efficiency and potential need for repair or replacement.

32.

Check temperature difference of supply & return air temperatures

Temperature difference indicates production and capacity of unit.  Also affects comfort level.