Can I Perform My Own Maintenance Checks?

At Mullen, we believe there are always basic, common sense checks and maintenance that home owners can handle for themselves.

Why choose Mullen? We’ve been providing professional heating and cooling service to residential and commercial customers in the Latrobe and Greensburg areas since 1959. Our long-time, factory trained and experienced technicians know more than many of our competitors, and have a wealth of experience to offer homeowners and businesses alike.

When it comes to your heating and cooling needs, if anything on your checklist concerns you, call Mullen today at 724-537-7203, or visit our Service Request page.

Planned Maintenance Checklists

Air Conditioner / Heat Pump Tune Up Checklist
  • Inspect room thermostat
  • Inspect the air filters
  • Check blower belt and tension
  • Check blower motor and lubricate
  • Check all electrical connections for tightness
  • Check refrigerant charge
  • Check and lubricate outdoor fan motor
  • Check indoor coil for dirt
  • Clean outdoor condensing unit
  • Clean out condensation drain
  • Soap drain
  • Check crankcase heater
  • Check condensation pump
Additional Checklist for Heat Pump
  • Check optimizer setting
  • Check outdoor stat setting
  • Check defrost cycle
  • Check supplemental heat
  • Add up to 1 pound of refrigerant if required
Gas Heating Planned Maintenance Checklist
  • Inspect air filters
  • Check blower belts, tension alignment and lube
  • Check blower motor and lubricate
  • Check blower for cleanliness
  • Test for gas leaks in furnace
  • Test and adjust pressure regulator
  • Check and adjust pilot assembly
  • Check gas filter for pilot
  • Clean and adjust all controls
  • Check operation of safety controls
  • Perform combustion analysis
  • Clean interior of vestibule
  • Clean and adjust thermostat
  • Adjust burner for efficiency
  • Inspect flue pipes and draft diverter
  • Check gas valve
  • Check furnace operation
  • Inspect wiring on furnace
  • Check thermocouple
  • Check baffles in furnace and Inspect heat exchanger
  •  Check draft at breaching
  • Check for combustible material near furnace
  • Check thermostat
Oil Heating Planned Maintenance Checklist
  • Remove nozzle assembly and clean
  • Adjust electrodes
  •  Inspect ignition wires or buss bars
  • Clean combustion air fan
  • Inspect hear exchanger for blockage
  • Vacuum heat exchanger and flue pipe if necessary
  • Check chimney for blockage
  • Check flue pipe
  • Check and adjust draft regulator
  • Check safety control for cut-off
  • Clean bimetal on stack control
  • Replace oil filter
  • Check and lube oil burner motor
  • Replace oil filter
  • Check and lube oil burner motor
  • Check oil burner controls
  • Check oil pump pressure
  • Check oil pump cut-off
  • Check oil pump seal for leak
  • Check burner cone
  • Clean interior of vestibule
  • Check flame with mirror for proper flame retention
  • Check draft over fire
  • Check draft at breaching
  • Inspect combustion chamber
  • Perform combustion analysis
  • Inspect for oil leaks at oil tanks
  • Inspect oil lines for leaks
  • Inspect oil piping at burner for leaks
  • Check and clean cad cell or photo cell if used
  • Check air filters
  • Check blower and motor and lubricate
  • Check belt condition, tension and alignment
  • Check blower for cleanliness
  • Check for combustible material near furnace
  • Check thermostat
Commercial Planned Maintenance Program

One of our most popular offerings is our Planned Maintenance Program for commercial heating and cooling clients.

  • Reduce energy costs
  • Reduce down time
  • Minimize or prevent costly breakdowns
  • Prolong equipment life

Our experience includes heating and cooling service to restaurants and groceries, hotels, taverns, and ice cream parlors, commercial ice machines, and more. We know our hometown market and we serve it well. At Mullen, we have the people and the knowledge to keep your HVAC equipment operating at peak efficiency and we would like the opportunity to talk to you about a service and maintenance program you can count on.

Residential Heating & Air Conditioning

Carrier is the world leader in heating and air conditioning, and at Mullen we take a leadership role in bringing you the best Carrier has to offer along with exceptional hometown service. Mullen is a Carrier Factory Authorized Dealer, and we’ve been doing it right since 1959.

You’ve heard our motto “Professional Service after the Sale.” Now it’s time to find out how we back up those words with reliable on-site results that our customers appreciate. Call us at 724-537-7203 to learn more. Our residential services include:

Call Mullen today at 724-537-7203 for more information.