Besides replacing your filters on a regular basis—preventative maintenance keeps your system operating properly, efficiently and will prolong the life of your system. A regular ‘check-up’ on your heating/cooling system will ensure that you will have fewer breakdowns during those cold winter months and hot summer days!

Our qualified service technicians keep the heating/cooling systems of many large and small commercial buildings up and running with quarterly, semi-annual, or annual preventative maintenance. Check our gallery page for a few of our current projects.

Our residential customers keep their systems operating smoothly with annual maintenance. Fall maintenance is great for heat pump/furnace systems and spring is a good time for systems with air conditioners.

Here are the preventative maintenance options we provide:

Blairco Maintenance Checks
  • Cycle and test run equipment from the thermostat
  • Check all electrical connections
  • Check amperage to compressor & motors
  • Check and clean evaporator & condenser coils
  • Chemically treat condensate pan
  • Check belt condition & tension
  • Check blower motor & fan
  • Check refrigerant charge
  • Check ignition controls
  • Inspect heating elements
  • Inspect & clean burners
  • Lubricate motors and moving parts
  • Inspect, clean or replace air filters (1″ & 2″ included)
  • Check and calibrate thermostats
  • Check all safety and limit controls
  • Inspect gas lines
  • Check and adjust gas pressure
  • Test and record return air, supply air and outdoor temperatures
Gas Furnace Checks
  • Cycle the furnace
  • Limited blower cleaning
  • Measure and record delta T
  • Clean flame sensor
  • Cycle and clean condensate pump
  • Check condensate drain
  • Rate/set furnace input
  • Measure and record inducer motor amp draw
  • Inspect flue pipe
  • Measure and verify ignition protocols
  • Clean and adjust pilot assy
  • Measure and adjust gas pressure
  • Brush and inspect heat exchanger
  • Conduct bubble test for gas leaks
  • Clean burner compartment
  • Ohm out HSI record reading
Heat Pump/AC Checks
  • Check disconnect
  • Check fuses
  • Check refrigerant service caps and valves
  • Check contactor
  • Check fan blade
  • Check fan motor bearing play
  • Check defrost cycle
  • Check capacitors and record reading
  • Check reversing valve operation
  • Check TXV location & mounting
  • Check unit level
  • Clean debris out from inside of unit
  • Clean outside unit
  • Check lineset insulation/condition


Are you ready? Give us a call at 360-695-1476 or visit our contact page to set up your appointment.