HVAC System Maintenance

HVAC System Maintenance Manassas, VA

Your family’s health depends on clean air circulating in your Northern Virginia home. Over weeks and months, dust and contaminants build up in ductwork, on coils and especially in filters. These built-up particles slow airflow and make your HVAC system work harder. Lost efficiency and mechanical wear result in a less healthy indoor environment and more frequent heating and cooling equipment replacement. Regular HVAC maintenance eliminates the accumulation of contaminants in your home, saves you money and takes no DIY effort when you sign up for a Parrish Priority Service Plan.

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Routine home maintenance can be overlooked when you are a busy professional. You’d rather spend your weekends relaxing—not rounding up tools and supplies to tackle seasonal cleaning and tuning of furnaces, heat pumps, air conditioners, ceiling fans, water heaters and plumbing fixtures. Parrish Priority Plans establish a regular schedule of maintenance for all your home systems, and most inspections are performed at the same time. Parrish takes care of scheduling and documenting, too. Your home gets the care it needs, and you enjoy the convenience, energy efficiency and comfort of a well-maintained home.

Day or Night, Call Parrish for Emergency Repairs

Cold Season HVAC Maintenance Checklist

Parrish HVAC maintenance includes inspections and service required to keep your warranty in effect. All heating and cooling maintenance visits are documented and stored online for easy retrieval. Depending on the requirements of your home’s system, our Fall and Winter Checklist includes:

  • Clean or replace furnace or heat pump filters  
  • Inspect flue function & attachment
  • Inspect burner ignition & operation
  • Check wires, fuses & electrical connections
  • Clean heating elements & heat exchanger
  • Inspect inline air purifiers & filters
  • Replace worn belts & parts
  • Test for carbon monoxide
  • Calibrate thermostat
  • Lubricate moving parts
  • Test for gas leaks

Warm Season HVAC Maintenance Checklist

With warm, muggy weather lasting for four months or longer, your Northern VA cooling system gets a workout. Parrish Spring and Summer HVAC Maintenance Checklist includes:

  • Clean or replace filters
  • Remove debris from around outside compressors
  • Clean coils in evaporator and condenser
  • Check drain lines for flow & unclog if needed
  • Empty & clean drain pans
  • Check refrigerant level & look for leaks
  • Inspect ductwork for dust & mold
  • Check wiring & electrical connections
  • Replace worn belts & pulleys
  • Inspect fan & blower operation
  • Lubricate moving parts
  • Recalibrate thermostat 

Improve Your Inside Air With HEPA Filters & Air Purifiers

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Customer Reviews

Parrish has the best customers in Northern Virginia, hands down! To learn more about the Parrish Difference or discover the many reasons that so many new customers are now lifetime customers, check out these stories from verified clients.

Parrish Services technicians are invariably excellent at their job and very personable. The company may not always be the cheapest one in the area but the few extra percents on the bill buy the very best services in northern Virginia. I would not think of using anybody else.
Philippe Lacoude
Philippe Lacoude
17:20 29 Aug 22
Just a standard maintenance evaluation on my HVAC system but my tech was on time, polite, thorough and knowledgeable. He advised me on parts I can replace myself to buy a little more time with my current older unit rather than trying to upsell me. He advised that I will likely need a new unit in the next couple of years, but again did so without any pressure to address prematurely. Overall it was great exchange and established a sense of honest trade work. This will not be forgotten when it is time to buy a new system!
Tim Brown
Tim Brown
19:01 26 Aug 22
This was our 1st annual check up. Robert was very helpful and professional. However, we found the prices to be very high. We’ll have to really consider the recommendations.
Rickey Butler
Rickey Butler
15:47 17 Aug 22
Team was friendly, professional, focused and in great spirits. So far I have no complaints, no criticisms, house is the perfect temperature. Great job!
Michael Arko
Michael Arko
12:30 16 Aug 22
Great service overall! Doug B did a thorough job on my HVAC check providing info on preventative maintenance need next time I need HVAC check, which I will definitely do between Nov and Jan! Great job!!
Lisa Timmering
Lisa Timmering
01:58 02 Aug 22
Joe was exceptional! He quickly diagnosed the issue with my A/C unit/cleared the "fault" and wa-la, the until began working again! Thanks Joe for your work!
Lisa Hensley
Lisa Hensley
15:59 01 Aug 22
When your air conditioner goes out, and it's July...the hottest month of the year...it's an emergency! So I took the first appointment I could get with a company that used a bait and switch technique of leading me to believe they could come soon- only to later confess they would have to come later. I kept calling around and got someone at Parrish Services. They were honest about what they could and could not do. They sent out true professionals who diagnosed the problem within 10 minutes...fixed it, and spoke honestly about what they were doing and what to look out for in the future! Thank you Parrish Services!!
grady powell jr
grady powell jr
09:05 22 Jul 22
I have had a service contract with Parrish Services for many years. Everyone now and again I get pleasantly surprised with service for an issue that is most unpleasant.I had my semi-annual service check done 2 weeks ago. Over the past 2 days it's been warm in the house. I called Parrish to come back to look at the A/C system again. In a matter of 2 hours they were able to schedule next-day service, and the tech re-arranged his calls for service so that he spent less time driving. That meant I was next on his schedule based on location of service calls.The tech ended up locating a major coolant leak. We opted for the lesser of two expenses by having the coil replaced (a quarter of the price of a brand new unit; still not cheap, but better than replacing the entire unit).I am thankful for Parrish Services' scheduling diligence and courteous service. They bent over backwards to schedule a next-day appointment during a stretch of the year when they have an overabundance of A/C service calls.
Peter Prinz
Peter Prinz
13:50 21 Jul 22
Joe C is the Man! Very professional and knowledgeable. He kept me informed every trouble shooting step of the way. Parrish Services, Inc is definitely #1 on my list for all HVAC needs. Thank you!Also thanks to the young lady that booked my appointment! Sorry I can remember her name. She was very kind and found me an opening.
Lee Andrews
Lee Andrews
18:09 02 Jun 22
Really excellent service at all levels, from scheduling to the actual repair. Christopher L. was knowledgeable and extremely smart and persistent in diagnosing the problem and repairing it. We will definitely be using their services again. A+++++
The McFeely Rainbow Experiment
The McFeely Rainbow Experiment
19:56 25 May 22