GAS FURNACE MAINTENANCE CHECKLIST
It’s a good idea to perform basic annual furnace maintenance each fall to ensure your heating system is running efficiently. Basic maintenance can include each of the parts that makes up your heater system. The thermostat determines when the heater should come on by measuring the temperature of the air in the room. The thermostat will signal to the heater and blower to turn on. The heater uses combustion to create heat while the blower pushes the air to the heat exchanger where it is distributed through the heating ducts into the home. By following a yearly furnace maintenance schedule, you can help each of these parts run smoothly and keep your home comfortable throughout the winter.
WHEN SHOULD I DO A FURNACE MAINTENANCE?
The old adage is true: an ounce of prevention is worth a pound of cure. Our technicians can easily detect an impending issue before you have to replace a heating unit or spend a lot of money on parts and labor. Below you’ll find our Preventative Maintenance Checklist, which is our proven method to keep your system in the pink and your home in constant comfort.
- For a system that heats and cools: perform maintenance in the spring and fall
- For cooling system maintenance only: perform maintenance at least once a year, before the cooling season
- For furnace maintenance only: perform maintenance at least once a year, before the heating season.
Are Annual Furnace Inspections Really Necessary?
The answer is YES! When your furnace breaks down, you’re not only facing a chilly winter night without heat, you’re also risking the health and safety of your family without even knowing it.
Heating systems can produce dangerous gasses, including tasteless, odorless carbon monoxide.
What's Covered in Your Tune Up
20-Point Gas Furnace Tune Up
- Cycle the furnace
- Limited blower cleaning
- Clean or change filter (customer supplied or purchased from contractor)
- Verify limit operations
- Measure and record delta T
- Clean flame sensor
- Cycle condensate pump (90% or better EF)
- Measure and record amp draw to blower
- Rate/set furnace input
- Measure and record amp draw inducer
- Inspect flue pipe & Pressure Switch Operation
- Measure and verify ignition protocols
- Clean burners
- Tighten electrical connections
- Clean and adjust pilot assembly or HSI
- Clean exterior
- Measure and adjust gas pressure
- Brush and inspect heat exchanger
- Conduct bubble test for gas leaks (if needed)
- Vacuum burner compartment
INDOOR UNIT OWNER REVIEW CHECKLIST
- Inspect and clean blower assembly (includes blower housing, blower wheel and motor)
- On older models, lubricate motor and inspect and replace fan belt if needed
- Check combustion blower housing for lint and debris and clean as necessary
- Inspect evaporator coil, drain pan and condensate drain lines. Clean as needed
- Inspect for gas leaks in gas furnaces
- Inspect burner assembly—clean and adjust as needed
- Inspect ignition system and safety controls—clean and adjust as needed
- Inspect heat exchanger or heating elements
- Inspect flue system—check for proper attachment to the furnace, any dislocated sections, and for signs of corrosion. Replace if necessary.
- Inspect control box, associated controls, wiring and connections
- Clean or replace air filters
- Inspect conditioned airflow system (ductwork)—check for leaks
WHILE YOUR SYSTEM IS OPERATING
- Monitor system starting characteristics and capabilities
- Listen for abnormal noise
- Search for source of unusual odors
- Monitor air conditioning and heat pump systems for correct refrigerant charge
- Measure outdoor dry bulb temperature
- Measure indoor dry and wet bulb temperature
- Measure high and low side system pressures
- Monitor gas furnace for correct line and manifold gas pressure—make adjustments as needed
- Measure temperature rise and adjust airflow as needed
- Check vent system for proper operation
- Monitor system for correct line and load volts/amps
- Monitor system operation per manufacturer's specifications
- Provide system operation report and recommend repairs or replacement as necessary
- NOTE: Trane recommends all maintenance and service work be performed by a professional air conditioning and heating dealer that holds the appropriate credentials to install and service air conditioning and heating equipment.