Do you have warranties or guarantees on your services?

Yes, at Parrish Services, we ensure excellence in every service we provide. For all HVAC services, we offer warranties and guarantees so you can have peace of mind with our customers. We’re so confident in our work that you can trust your heating and cooling systems with us.

What if I need emergency service?

We know HVAC emergencies happen at the worst times. That’s why Parrish Services offers 24/7 emergency repair service. Our certified team is available 24/7 to get to you quickly to fix issues like refrigerant leaks and system failures and get you comfortable quickly.

Are your technicians qualified and insured?

Yes. Parrish Services has a team of highly qualified and insured technicians. Our technicians are trained and certified in multiple areas, so they can handle any HVAC service with expertise and precision. Your safety and satisfaction are our top priority.

Gas Lines & Conversions

Gas Lines & Conversions in Manassas, VA

Is it time to replace your old propane or fuel-oil furnace? Clean-burning natural gas is a good choice for powering your home’s water heater, cooktop, clothes dryer and heating system. Supply lines deliver inexpensive natural gas throughout Northern VA cities and rural communities, and Parrish Services installs natural gas lines and completes home fuel-oil conversions. Ask about extending new or existing gas lines to include appliance installation, fireplace inserts, pool heaters and outdoor kitchens, too!

Call Us: (571)-650-1016

Get in Touch!

Parrish Service Expert Holding A Gas Pipe

Hire a Home Maintenance Concierge

Parrish Services’ licensed HVAC contractors Manassas bring equipment, skill and experience to your gas line conversion—without the need for multiple contractors, subcontractors or other third parties. Trust our qualified technicians to submit your plans, obtain necessary permits and perform excavation, electrical and plumbing work. Our expertise includes coordinating gas line installation with local utilities, scheduling inspections and providing gas connection for new appliances or other gas-powered devices. If necessary, we can also modify your electrical supply!

Use our handy mobile app to track the arrival of Parrish Services’ technicians. With our one-stop services, you’ll save time and worry knowing we’ll complete your project—on time and on budget.

Convert to Natural Gas With Parrish Services

When it’s time to replace your heating system, harness the uninterrupted convenience and energy efficiency of natural gas. Call (571)-650-1016 or connect online to schedule an appointment or video sales call. Ask about natural gas line installation, conversion and furnace replacement.

Advantages of Natural Gas Conversion

Why should you convert to gas appliances and heating? Consider these benefits of using natural gas in your Northern VA home:

Quiet, safe heating & appliance operation
Proven energy efficiency
Lower fuel costs
Precise, controlled cooking
Cleaner & greener than other fossil fuels
Abundant domestic supply & widespread infrastructure
Variety of gas appliance options
Uninterrupted supply during storms or disasters

Call Us: (571)-650-1016

10 Steps to Residential Natural Gas Conversion

With the help of Parrish Services, converting to natural gas for home heating, cooking and outdoor entertaining is a snap. You can maintain your busy schedule while Parrish sees to these details and more:

Determining natural gas availability in your area.
Developing a conversion plan for your property.
Performing a site survey.
Applying for necessary permits.
Identifying underground hazards before digging.

Installing natural gas lines & backfilling trenches.
Installing desired gas appliances or furnaces.
Air testing all gas lines.
Scheduling inspections.
Contacting gas utility for meter installation & start of service.

Throughout the gas conversion process, Parrish Services keeps you informed with transparent communication, detailed recordkeeping and app-based access to service records, billing and payment information. Our seasoned, certified technicians and comprehensive heating, cooling, plumbing and electrical expertise make us the one and only home improvement company you’ll ever need!

Call (571)-650-1016 or go online to schedule heating maintenance or request an estimate for furnace replacement and gas line conversions.

Renewable Energy Options in Northern VA

Whether your home is too far from natural gas supply lines or you’re pursuing sustainable living in the city, Parrish Services offers geothermal heat pumps and eco-friendly climate control options that meet your goals. Eliminate emissions and reduce your carbon footprint today. Call our office at (571)-650-1016 or go online, 24/7, to schedule heating maintenance or request an installation estimate for heat pumps, geothermal services, gas conversion and more.

Our Blogs

Become a Parrish Insider! Visit our blog and newsroom to get the scoop on company news,
industry innovation, DIY tips and giving-back campaigns.

Two air conditioners installed outside of a home

How To Prepare Your HVAC System for Warmer Weather

April 3, 2025

As the weather begins to warm up in Virginia, it’s time to prepare your HVAC system for th…

Air Source Heat Pumps vs Geothermal Heat Pumps: Which Is Best for You?

January 30, 2025

When choosing between Air Source Heat Pumps vs Geothermal Heat Pumps, it’s important to co…

Top Signs Your Heat Pump Needs Service Before Winter in Manassas

January 27, 2025

Winter is coming, and the last thing you want in Manassas is a failing heat pump. To avoid…

View More Blogs

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

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

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

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

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

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

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

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

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

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

19:56 25 May 22

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Virginia Class A Contractor 2705191076 with HVAC, gas fitting, plumbing, and electrical specialties.

Working at Parrish