We’ve been running our A/C all summer long, but the First Day of Fall is quickly approaching and the weather is changing. While it might not be freezing outside yet, temperatures are dropping and humidity levels are rising. These changes can cause hidden issues in your HVAC system that may not have been an issue during the summer months when you needed to keep your home cool at all costs. If you let these issues go unaddressed during the fall, you risk having them turn into major repairs in the spring or winter when you really need your system to be working well to keep your home comfortable.


The Importance of Fall HVAC Maintenance

After running the A/C all summer long, fall HVAC maintenance is a necessity in Manassas. Getting your system ready for the cooler temperatures will ensure your home comfort and catch any hidden issues in your system. Your heating and cooling system works hard to keep you comfortable all year long, so it’s important to give it the TLC it deserves.

From checking for loose insulation to testing electrical connections, getting an annual checkup from our technicians can help extend the life of your system.  In addition to preventive maintenance services that are recommended by industry professionals at least twice a year (or once every six months), there are several things homeowners can do themselves at their convenience.


What to Expect During HVAC Inspection


Gas 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

You Can Trust our Technicians

Our certified technicians at Twin Air, LLC have been servicing the Northern Virginia area since 2005. Family-owned and operated, we take pride in our work and always put the customer first. No matter how big or small the project is, we’re here to help.

Not to mention we’re highly certified specialists!


don’t fall behind! Schedule your maintenance today 

With the weather already starting to cool down, it’s not too early to start thinking about fall HVAC maintenance. After running your air conditioner all summer, it’s important to get your system ready for the cooler temperatures. This will ensure your home comfort and catch any hidden issues in your system. Get your name on our schedule today by giving us a call or sending us a contact form!

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