Maintenance

When it comes to HVAC Maintenance services, Twin Air offers flexible plans that cover all your needs for the unique heating and air conditioning unit you have. Based in Manassas, VA, we service units throughout all of Norther Virginia!

A man in a red shirt with a beard and blond hair is working on an electrical panel or appliance. He's focused on connecting or checking wires inside the unit, positioned in a room with beige walls and other equipment around.

Twin Air Is Proud To Provide Preventive HVAC Maintenance On All Systems!

Choose Twin Air for personalized HVAC maintenance plans, designed to suit your specific system and servicing all of Northern Virginia.

We Offer Several Different HVAC Maintenance Plans

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 (Heat)

Plan B

One Check-Up
Spring (A/C)

Plan C

One Check-Up
Fall (Heat)

Plan D

Oil Furnace Service
(Includes Nozzle & Filter)

Ready to Schedule Your Maintenance?

Schedule Now!

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

PCO Kit

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

Attic Fan

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

UV Lights

  • Replace bulbs
  • Check ballast

Tankless Water Heater

  • Basic check
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Serving

Fairfax, Prince William, Fauquier, Loudoun, Arlington, Manassas, Nokesville, Bristow, Gainesville, Haymarket, Fairfax, Falls Church, McLean, Sterling, Arlington, Alexandria, Vienna, Warrenton, Woodbridge, Lorton, & Surrounding Areas!

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Refund Policy

The craftsmanship of our services we maintain at the highest quality. If for some reason your satisfaction is not met, contact our office so we can ensure complete satisfaction.

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