Maintenance

Twin Air is proud to provide preventive maintenance on all systems!

A/C  |  Furnace  |  Heat Pump  |  Oil Furnace  |  Geothermal  |  Rooftop Unit  |  Humidifier  |  PCO Kit  |  Attic Fan  |  UV Lights  |  Tankless Water Heater

We offer several different maintenance plans to accomodate your needs and budget.

We will be happy to work with you to determine the plan that is best for you.

Plan A

Two check-ups

Spring (A/C), Fall (Gas Furnace)

Plan B

One check-up

Spring (A/C)

Plan C

One check-up

Fall (Gas Furnace)

Plan D

Two check-ups

Spring and Fall (Heat Pump)

Plan E

Oil Furnace Service

(includes nozzle & filter)

Maintenance Checklists

A/C

  • Check operating pressures
  • Check voltage and amperage to all motors
  • Check air temp drop across evaporator
  • Check for proper refrigerant charge & possible leaks
  • Check evaporator super heat & condenser sub cool
  • Check filters
  • Check pressure switch cut-out settings (if equipped)
  • Check time delay relays (if equipped)
  • Check contactor contacts
  • Check all wiring and connections
  • Check air temperature across condenser
  • Check condensate drain
  • Check capacitor M (microforads)
  • Ensure TwinAir sticker is visible

Furnace

  • Check thermostat
  • Check safety controls
  • Adjust burner for efficiency
  • Check for gas leaks in furnace
  • Check filters
  • Check flue pipe and draft
  • Check manifold gas pressures and adjust
  • Clear pressure switch tubing
  • Check blower
  • Combustion Test
  • Clean pilot assembly and test
  • Check thermocouple
  • Ensure TwinAir sticker is visible

Heat Pump

  • Check operating pressures
  • Check voltage and amperage to all motors
  • Check air temp rise (∧T) across indoor coil
  • Check for proper refrigerant charge
  • Check super heat & sub cool
  • Check filters
  • Check pressure switch cut-out settings (if equipped)
  • Check time delay relays (if equipped)
  • Check contactor contacts
  • Check all wiring and connections
  • Check condensate drain
  • Check defrost controls
  • Check reversing valve
  • Check indoor blower
  • Ensure TwinAir sticker is visible

Oil Furnace

  • Clean and inspect heat exchanger for cracks
  • Replace nozzle and oil filter
  • Adjust nozzle assembly and electrodes
  • Clean and inspect flue
  • Check safeties and clean cad cell – test primary control
  • Check blower
  • Combustion Test/Draft Test
  • Ensure TwinAir sticker is visible

Geothermal

  • Check blower and pumps
  • Test loop fluid pressure/check GT cylinder fluid level
  • Check and calculate heat of extraction/rejection
  • Check refrigerant operating pressures
  • Check and adjust loop field flow rate
  • Check coil and air filters
  • Check ∧T across coil
  • Check contactor
  • Check relays
  • Check safeties
  • Check capacitors
  • Ensure TwinAir sticker is visible

Rooftop Unit

  • Check operating pressures
  • Check voltage and amperage to all motors
  • Check air temp drop across evaporator
  • Check for proper refrigerant charge & possible leaks
  • Check evaporator super heat & condenser subcool
  • Lubricate all moving parts
  • Check belt and adjust tension
  • Check filters
  • Check pressure switch cut-out settings (if equipped)
  • Check time delay relays (if equipped)
  • Check contactor contacts
  • Check all wiring and connections
  • Check air temperature across condenser
  • Check condensate drain
  • Check capacitor M (microforads)
  • Ensure TwinAir sticker is visible

Humidifier

  • Replace pad
  • Clean reservoir
  • Replace canister
  • Check drains
  • Check electrical components
  • Check humidistat/test

PCO Kit

  • Replace Merv 16 Media
  • Replace UVC Bulbs
  • Replace PCO Grid

Attic Fan

  • Check thermostat
  • Check motor
  • Check wiring connections
  • Clean housing and fan

UV Lights

  • Replace bulbs
  • Check ballast

Tankless Water Heater

  • Basic Check

Ready To Work With Us?

Ready To Work With Us?

 

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Office Hours:

Monday - Friday,
7:30am - 4:30pm

Address:

8615-B Quarry Road
Manassas, VA 20110

Email:

office@twinairllc.com

Phone:

703-754-1062

Fax:

703-368-7118

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Serving:

Fairfax, Prince William, Fauquier, Loundon, Arlington, Manassas, Nokesville, Bristow, Gainesville, Haymarket, Fairfax, Falls Church, McLean, Sterling, Arlington, Alexandria, Vienna, Warrenton, Woodbridge, Lorton

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