WHEN SHOULD I DO FURNACE MAINTENANCE?
The old adage is true: an ounce of prevention is worth a pound of
cure. Below you’ll find our Preventative Maintenance Checklist, which
is our proven method to keep your system in the pink and your home in
- 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
HVAC PREVENTATIVE MAINTENANCE CHECKLIST
Many dealers provide priority service for their customers who have
an annual maintenance or service agreement. Bi-annual preventative
maintenance will ensure that your system runs as efficiently as
possible. Your local dealer will perform the following tasks,
depending on the unit:
- Inspect unit for proper refrigerant level and adjust if
- Clean dirt, leaves and debris from inside
- Inspect base pan for restricted drain openings—remove
obstructions as necessary
- Inspect coil and cabinet—clean as
- Inspect fan motor and fan blades for wear and
damage—on older models lubricate as needed
- Inspect control
box, associated controls/accessories, wiring and connections.
Controls may include contactors, relays, circuit boards, capacitors,
sump heat and other accessories. All control box and electrical
parts should be checked for wear or damage.
compressor and associated tubing for damage
- 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
- 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
- Inspect control box, associated controls, wiring
- Clean or replace air
- Inspect conditioned airflow system
(ductwork)—check for leaks
- WHILE YOUR SYSTEM IS
- Monitor system starting characteristics and
- 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
- 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
- Monitor system for correct line and load
- Monitor system operation per manufacturer's
- 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
a Trane Comfort Specialist near you
- HOW CAN I GET THE
MOST OUT OF MY TRANE HEATING AND COOLING SYSTEMS?
systems are designed to provide optimal efficiency and comfort. Now
it’s time to do the same to your home. Here are some things you can
do around the house to optimize the operation of your system, as
well as the comfort inside your home.
- COOLING SYSTEM
- Set the thermostat as high as comfort will
- Make sure attics are adequately ventilated to relieve
heat buildup. If necessary, improve airflow by adding or enlarging
- When building a new house or renovating an old one,
choose light-colored roof shingles to reflect more of the sun's
- During moderate weather, don't use the air conditioner
- Draw blinds or drapes to block the sunlight
during the hottest part of the day.
- Install awnings over
windows exposed to direct sunlight.
- In the cooling season,
don't run kitchen and bath exhaust fans longer than necessary.
- Don't place lamps, TV sets or other heat-producing devices
beneath a wall-mounted thermostat. Rising heat from that equipment
may cause the air conditioning system to overcool your house.
- HEATING & FURNACE MAINTENANCE
- Locate the thermostat on
an inside wall away from windows and doors.
- Set the
thermostat as low as comfort permits. Each degree over 68°F can add
3% to the amount of energy needed for heating.
generate heat. So lower the thermostat a degree or two when
expecting a large group of guests.
sure your home is properly insulated. This is the single most
important step in conserving energy. Thermal insulation should be
specified in terms of thermal resistance (R-values). R-30 (10")
is recommended for ceilings, and R-11 (3-1/2”) for exterior walls
and floors over unheated areas. In colder climates, consider
- Infiltration of humid outside air is
your heating and air conditioning system's worst enemy—it could
account for 15% to 30% of air conditioning energy requirements. Find
the places where air can sneak into the home and plug them with
caulking, weather-stripping or plastic. Also, weather-strip and
caulk around all entrance doors and windows.
- Cut heat
transfer through your windows by 40% to 50% with double-glazing (two
panes of glass separated by a sealed air space) and low-e
- Use wood- or metal-frame storm windows even if
single-glazed windows are high quality. The extra layer of glass and
the layer of still air will cut heat transfer considerably.
- Install storm doors at all entrances to your house.
- Keep all windows and doors closed.
- Remember that by
increasing the glass area, you increase the amount of heat added in
summer and lost in winter.
- Make sure fireplaces have
tight-fitting dampers, which can be closed when the fireplace is not
in use. Invest in a humidifier to conserve energy in winter. The air
in your home won't be as dry, so you stay comfortable at a lower