Mann-In, Inc.


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Website | (703) 263-1200
14700 Flint Lee Rd, Chantilly, VA 20151, USA

Opening Hours:
Monday: 7:00 AM – 4:00 PM
Tuesday: 7:00 AM – 4:00 PM
Wednesday: 7:00 AM – 4:00 PM
Thursday: 7:00 AM – 4:00 PM
Friday: 7:00 AM – 4:00 PM
Saturday: Closed
Sunday: Closed

Area Served:
Within 4 miles (6.4km) of 14700 Flint Lee Rd, Chantilly, VA 20151, USA
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Customize Your Indoor Climate To Your Needs

A lot more goes into indoor comfort than just heating and cooling. Mann-In, Inc. installs a variety of systems and can help you keep your air clean, fresh and comfortable. Consider installing one of our...

We'll explain your options and help you design a system that works for your home. Contact our HVAC contractor today for more information.

Google Rating: 4.8 out of 5 stars (92 total ratings)

Martin Gordon
5 Star
Mann-In technician did superb job to remedy heat unit out. He diagnosed problem and removed battery from wall thermostat and did override to get unit running again. A small job because of his . honesty and integrity. He is to be commended by the company cause could see others just want to replace an older unit. Misplaced invoice otherwise would cite his name. Reason been customer of Mann-In for over 20 years.
Sunday 31st March 2024
Julie B
5 Star
We are very happy with Nate and the great Mann-In service! Nate in the Service Dept. and the Office Staff too are true professionals! They are very friendly and always concerned about providing the best service possible. Nate has provided us superior service visits, he is always willing to answer questions, and he has a lot of useful knowledge about heating and cooling systems. We're glad we have had a Mann-In service agreement for 2 years now. Thanks! Keep up the great work! - Julie
Tuesday 12th September 2023
5 Star
This is how companies should be operated: Had Mann-In install a full HVAC system 10 years ago. Recent home sale inspection flagged the venting system as code violation. Contacted Mann-In (Trevor) with info and they admitted it was a over site that even post install inspection didn't catch. Within 24 hours sent out two workers that made it good...AFTER 10 YEARS???? No argument... no charge... no discussion just fixed the issue with only an apology it wasn't done correctly the first time.....That alone should make this your go to HVAC company.
Wednesday 23rd August 2023
Scott Kesselman
5 Star
We had Mann-In come out to provide an HVAC system estimate to either partially or fully replace our current system. Buck was the most knowledgeable and informative person I had met across many contractors. I appreciated his expertise and level of knowledge and detail when recommending solutions. Not only did he give me confidence in the proposed solution, he was extremely enjoyable to work with and it was a pleasure to speak with such a pleasant and passionate individual.
Wednesday 8th March 2023
Maddie Carinci
5 Star
Last week I had a gas leak both inside and outside of my house. We reached out to Mann-In late Tuesday afternoon and Trevor was able to come out Wednesday morning and give us a much more reasonable estimate compared to the other company I had received an estimate from. Mann-In sent out one of their technicians, Nate, who came out about an hour later and he was able to get all of the work done quickly in order to get my gas turned back on later that afternoon. I would highly recommend Mann-In to anyone looking for HVAC services - Trevor and Nate were incredible!
Monday 27th February 2023