Mannix Heating & Cooling LLC

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Mannix Heating & Cooling LLC

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HVAC About Us

Mannix Heating & Cooling was founded by Jerry Mannix in 2010.

At the time, Jerry had worked for one of the largest heating and cooling companies in the country. During the many years with this company, Jerry watched this company grow from a large local company to a massive nationwide consortium that grew mainly by acquiring smaller companies. He also witnessed the company change from a service oriented company that cared for it’s customers, to a large conglomerate that was owned by a private equity firm who cared more about the bottom line than the customer. Their motto was “we are a sales and marketing company that just happens to sell HVAC equipment”.

31/10/2026

🎃👻 Happy Halloween from all of us at Mannix Heating & Cooling!

We hope everyone has a fun-filled day and a safe, happy Halloween! Enjoy the costumes, candy, and spooky fun with family and friends. Stay safe out there, and have a BOO-tiful night! 🧡

Don't Panic, Call Mannix!

27/10/2026

Our team recently completed a major HVAC upgrade at Pender Pet Retreat in Chantilly, VA!

This project involved replacing an existing 6-ton York gas package unit with a new 6-ton Trane system. With the help of a massive 90-ton crane, the new unit was carefully lifted over the building and into place!

We’re proud to help local businesses like Pender Pet Retreat keep their facilities comfortable for the pets in their care. From boarding and daycare to spa services and enrichment, they do a lot to keep our four-legged friends happy! 🐶🐱

Thanks to Pender Pet Retreat for trusting Mannix Heating & Cooling with this project!

📍 Chantilly, VA

21/10/2026

🍂 October Special at Mannix Heating & Cooling! 🍂

Get your home ready for colder weather with our $69 Fall Heating Tune-Up per unit! 🔥

October is almost over, so don't miss out on this limited-time special!

📞 Call Mannix today to schedule your tune-up and stay warm this fall!

Don't Panic, Call Mannix! 🧡

21/10/2026

https://mannixhvac.com/2026/10/15/7-things-homeowners-should-check-this-fall/

As temperatures begin to drop across Virginia and Maryland, it’s time to start thinking about your home’s heating system. The last thing anyone wants is to turn on the heat during the first cold snap of the season only to discover that something isn’t working properly.

10/10/2026

🔧 Mitsubishi Mini-Split Repair in Annandale, VA! ❄

Silvio and Alan were on the job in Annandale, giving this Mitsubishi mini-split some much-needed TLC! They replaced the blower wheel, cleaned the inside of the unit and coils, cleared the drain line, and cleaned the air filters to help everything run smoothly.

After the work was complete, they tested the system and confirmed it was cooling properly and operating as it should!

Great work by Silvio and Alan! 👏 Thanks to our hardworking techs for keeping our customers comfortable!

Don't panic, Call Mannix!

02/10/2026

🍂 Fall is here — is your HVAC system ready?

October is the perfect time to make sure your heating system is ready to keep your home comfortable when those chilly mornings arrive!

For a limited time, Mannix Heating & Cooling is offering our Fall Maintenance Visit for just $69! 🔥

Our fall maintenance includes:
✔️ Clean and adjust gas burners
✔️ Inspect the heat exchanger
✔️ Check wiring and electrical components
✔️ Inspect the blower motor
✔️ Check gas pressure
✔️ Inspect the ignitor/pilot
✔️ Check filters
✔️ And more!

Regularly $135 — now just $69 for October!

Don't wait until the first cold snap to find out your heating system needs attention. Get it checked out now and head into the season with a little more peace of mind. 🏠🍁

📞 Call Mannix at 703-777-9211 to schedule your October maintenance!

Don’t panic. Call Mannix. 🧡

28/09/2026

🍂🔥 FALL HVAC SPECIAL IS HERE! 🔥🍂

Cooler weather is coming, and now is the perfect time to make sure your heating system is ready for it!

For a limited time, get your Fall Heating Tune-Up for just $69 per system! 🙌

Your tune-up includes:
✔️ Complete heating system inspection
✔️ Safety & performance check
✔️ Electrical & thermostat inspection
✔️ Filter check
✔️ Basic cleaning & tune-up
✔️ Check for potential problems before winter

🎁 AND THERE'S MORE!

If we find a repair needed during your tune-up, you'll get $25 OFF any repair of $250 or more!

✨ PLUS, YOU COULD WIN A FREE UV LIGHT! ✨

Schedule your Fall Heating Tune-Up by October 31, 2026, and you'll automatically be entered into our drawing for a FREE UV LIGHT! 🎉

And yes... we're planning to make the drawing fun and do a LIVE Spin to Win drawing! 🎡👀

📞 Call 703-777-9211 to schedule
🌐 MannixHVAC.com

Don't wait for that first cold night to find out your heating system isn't ready. Let's get you winter-ready! 🍁🔥

Offer expires 10/31/2026. One system. Residential customers only. Additional repairs and parts extra. Some restrictions may apply. Cannot be combined with other discounts or coupons.

23/09/2026

🍊 MEET THE TEAM: C**T! 🍊

We’re excited to introduce the newest member of the Mannix Heating & Cooling family — C**t! 👋

With an incredible 23 years in the HVAC industry, C**t brings a TON of experience to the team. Over the years, he’s worked as a service technician, installer, service manager, install manager, and branch manager. Needless to say, he knows his way around the HVAC world! 🔧

C**t is also a U.S. Army veteran, and we’re proud to have him on board. 🇺🇸

After recently relocating from the Richmond, Virginia area to St. Petersburg, Florida, C**t is ready to hit the ground running as our Florida Manager!

We’re excited to have someone with C**t’s experience, leadership, and knowledge helping us continue to grow Mannix in Florida. 🌴☀️

Help us give C**t a big WELCOME TO MANNIX!

Welcome to the team, C**t! We’re glad to have you!

21/09/2026

📞🚨 Our phones are currently down!

We’re aware of the issue and are working to get everything back up and running as quickly as possible.

If you need to reach us, please send us a message through our website or send us an email, and we’ll get back to you as soon as we can.

We apologize for the inconvenience and appreciate your patience! 🧡

Mannix Heating & Cooling

18/09/2026

A Team Effort to Get This System Back Up and Running!

This one was a big job for Mannix technicians Alan and Erick, who tackled a warranty compressor replacement and a whole lot more to get this system performing the way it should.

They replaced the outdoor compressor and filter drier, recovered the remaining refrigerant, pressure-tested the system, pulled a deep vacuum, and recharged it with 7.5 lbs. of R-410A to meet the manufacturer's specifications.

While they were there, Alan and Erick also:
• Chemically cleaned the furnace blower wheel and internal components
• Replaced a section of 6" flexible ductwork
• Made ductwork modifications to improve airflow and static pressure
• Checked the electrical draw and system operation
• Verified a 21.8°F temperature split across the coil

After all that work and testing, the system was back up and running properly and performing to manufacturer standards. 💪

Great work, Alan & Erick! We appreciate the time, skill, and attention to detail you put into getting this system back in shape. 🧡

Another job done right by the Mannix team!

Don’t panic. Call Mannix.

Address

26955 Gum Spring Road

20152

Opening Hours

Monday	08:00 - 18:00
Tuesday	08:00 - 18:00
Wednesday	08:00 - 18:00
Thursday	08:00 - 18:00
Friday	08:00 - 18:00
Saturday	09:00 - 13:00

Telephone

+17037779211

Website

https://mannixhvac.com/

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