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Mannix Heating & Cooling

Heating and Air Conditioning

About us

Mannix Heating and Cooling is a full service HVAC contractor with a location in Chantilly VA and Gaithersburg MD to serve you. We offer an extensive array of services designed to keep your heating and cooling equipment operating at peak efficiency through many years of reliable operation. We also provide water heater replacement, standby home generators and electrical panel replacements. For more information, please email info@mannixhvac.com

Business highlights

15 years of trusted experience
Emergency Services Offered

Services we offer

Heating & air conditioning - repair, replacement & installation, water heaters, humidifiers. Electrical - upgrades, generators. Service agreements

Services we don't offer

Window Units, New Construction HVAC Systems, Oil Furnace Repair

Amenities

Free Estimates
Yes
Warranties
Yes
Senior Discount

5%

Emergency Services
Yes


Accepted payment methods

Check
CreditCard
Financing Available

Photos of past projects

Reviews

4.9736 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
92%
4
4%
3
1%
2
1%
1
1%


Rating CategoryRating out of 5
quality
4.9
value
4.7
professionalism
4.9
responsiveness
4.9
punctuality
4.9
Showing 601-625 of 736 reviews

Marc V.
12/2015
4.0
electrician, heating & air conditioning/hvac
  + 0 more
unknown
Description of Work: Install new HVAC system for my condo

Rating CategoryRating out of 5
quality
3.0
value
3.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$6,000

Brian W.
11/2015
4.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: Replace heater/ac.

Rating CategoryRating out of 5
quality
4.0
value
4.0
punctuality
5.0

$8,000

Joanne H.
11/2015
5.0
heating & air conditioning/hvac
  + -1 more
.
Description of Work: .
Rating CategoryRating out of 5
Yes, I recommend this pro
$28,000

Mike Z.
11/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: Installed a ductless HVAC unit

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$4,900

Stephen S.
11/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

michael M.
11/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: Replaced HVAC system. Installation was done in less that a day as had been indicated when we got the estimate. No cleanup was needed on our part because they cleaned up everywhere they worked. We've been very satisfied with the new system and have experienced 40% lower electrical usage on AC despite having a really hot July and needing to keep the temperature very low due to a medical condition.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$14,000

Vijaya C.
10/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Rating CategoryRating out of 5

JEAN K.
10/2015
5.0
heating & air conditioning/hvac
  + -1 more
.
Description of Work: .
Rating CategoryRating out of 5
Yes, I recommend this pro
$5,400

Elise S.
10/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: They were very professional and knowledgeable but the price was quite a bit higher than others so we went with another company. Very impressed with this company but price difference was deciding factor.

Rating CategoryRating out of 5
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$4,500

Leslie O.
10/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$300

Ellis M.
09/2015
5.0
appliance repair, heating & air conditioning/hvac
  + 0 more
unknown
Description of Work: Replaced upstairs heating-cooling unit and compressor.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$15,000

Victoria H.
09/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: Date of service: October 15, 2013 Cost of service: 5,000.00
Rating CategoryRating out of 5
Yes, I recommend this pro

Michael P.
09/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: They installed a new HVAC system. They arrived on time, worked quietly, removed the old system, and were careful to not damage floors or walls as they moved items in and out of the house. The heat pump unit had a bad valve that became apparent about a week after the unit was installed. They quickly replaced it at no cost to me. The unit has been working very well since. They were very professional and we are pleased we selected Mannix.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$7,000

MARY ANNE G.
08/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

rona E.
07/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: air conditioning maintenance

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$350

Karen P.
07/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: A fine company for yearly service. They also replaced my gas furnace and hot water heater very neatly, quickly, and skillfully.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$6,000

Scott Y.
07/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: We needed a second heat pump system to cool our upper level. The Mannix rep, Hal was very detailed and thorough when discussing my options (much more than the other 2 HVAC dealers). He gave me several options and even included "scratch & dent" units that would save significant $$. Once I made my decision, they installed the system the next business day. Installers were professional and listened/addressed my installation concerns/suggestions. |Excellent overall service and I would definitely recommend them.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
4.0

Yes, I recommend this pro
$10,000

Kayla S.
06/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Elizabeth B.
06/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: They responded promptly to the call for AC repair, then sent an estimator for installation of a new system (badly needed). For the AC replacement, they arrived on time, and finished efficiently with minimal disruption. The work was superb and the staff was very professional. Highly recommend!

Rating CategoryRating out of 5
quality
5.0
value
3.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$4,200

Ursula D.
06/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Mariangela E.
05/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: New cooling heating system.

Rating CategoryRating out of 5
quality
4.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Anita S.
05/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$125

Sheila B.
05/2015
5.0
electrician, heating & air conditioning/hvac
  + 0 more
unknown
Description of Work: They installed a ceiling fan in a bedroom that did not have a pre-installed ceiling electrical box. Their work was excellent, and their clean up was immaculate. Will use them again.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Mary Sue C.
04/2015
1.0
heating & air conditioning/hvac
  + -1 more
unknown
Description of Work: The technician mis-diagnosed the problem with my A/C unit. They deliberately pointed out things as being problems which were not. They were trying to get me to replace the unit rather than fix a simple problem. After a more reputable company fixed it, the unit lasted through last summer and is still working this year.

Rating CategoryRating out of 5
quality
1.0
value
1.0
professionalism
1.0
responsiveness
5.0
punctuality
5.0

$99.95

Response from Mannix Heating & Cooling
I was sorry to read this member’s review of our services since she has been a customer since June of 2012. We were out to this member’s home a total of three times due to issues with her main floor A/C unit; first in June of 2012, then in July of 2012, and finally in June of 2014. At each service call we noted that the A/C unit was low on R-22 refrigerant. We added 2 pounds in June of 2012, then a capacitor in July of 2012, and on our last visit, our tech noted that the A/C unit was frozen up and he noticed oil on the outdoor unit condensing coil. The customer refused to have us perform a leak search. With the past history of low refrigerant and the fact that the unit was 17 years old, our tech recommended replacement. It should also be noted that it is an EPA violation for us to knowingly add R-22 to a leaking unit, so as a rule, we are only allowed to add refrigerant to a system once before performing a leak search. I wish this member had attempted to contact me directly so I could have at least tried to make things right, but I only found out about this issue from reading this review. Jerry Mannix

Roger P.
04/2015
5.0
heating & air conditioning/hvac
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Contact information

26955 Gum Spring Rd, Chantilly, VA 20152

http://www.mannixhvac.com

Service hours

Sunday:
Closed
Monday:
8:00 AM - 6:00 PM
Tuesday:
8:00 AM - 6:00 PM
Wednesday:
8:00 AM - 6:00 PM
Thursday:
8:00 AM - 6:00 PM
Friday:
8:00 AM - 6:00 PM
Saturday:
9:00 AM - 1:00 PM

Licensing

Bonded

Insured

Licensed*

Trade License Number
2705135017
Trade License Locale
VA
Trade License Authority
Virginia Department of Professional and Occupational Regulation
Trade License Expiration
05/31/2024

Eco-friendly Accreditations

LEED Accredited Professional
No
Energy Star Partner
No
EPA Lead-Safe Certified
No
Use Green Products or Work Practices
Yes
State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.

*Contact business to see additional licenses.


Service Categories

Heating and Air Conditioning

FAQ

Mannix Heating & Cooling is currently rated 4.9 overall out of 5.

Sunday: Closed

Monday: 8:00 AM - 6:00 PM

Tuesday: 8:00 AM - 6:00 PM

Wednesday: 8:00 AM - 6:00 PM

Thursday: 8:00 AM - 6:00 PM

Friday: 8:00 AM - 6:00 PM

Saturday: 9:00 AM - 1:00 PM

Mannix Heating & Cooling accepts the following forms of payment: Check,CreditCard,Financing Available
Yes, Mannix Heating & Cooling offers free project estimates.
Yes, Mannix Heating & Cooling offers eco-friendly accreditations.
No, Mannix Heating & Cooling does not offer a senior discount.
Yes, Mannix Heating & Cooling offers emergency services.
Yes, Mannix Heating & Cooling offers warranties.
Mannix Heating & Cooling offers the following services: Heating & air conditioning - repair, replacement & installation, water heaters, humidifiers. Electrical - upgrades, generators. Service agreements
Window Units, New Construction HVAC Systems, Oil Furnace Repair

Contact information

26955 Gum Spring Rd, Chantilly, VA 20152

http://www.mannixhvac.com

Service hours

Sunday:
Closed
Monday:
8:00 AM - 6:00 PM
Tuesday:
8:00 AM - 6:00 PM
Wednesday:
8:00 AM - 6:00 PM
Thursday:
8:00 AM - 6:00 PM
Friday:
8:00 AM - 6:00 PM
Saturday:
9:00 AM - 1:00 PM