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Farnen & Dermer Inc.

4.8
(1036 reviews)

Business Details

10500 Reisterstown Rd, Owings Mills, MD
21117, United States
(410) 902-0020
http://www.farnendermer.com

About

HVAC ContractorWater Heater Service
We are Maryland's oldest and most reliable air conditioning, heating, and plumbing service provider. We've been in business since 1902 and are a 5th generation family business!

Location

Farnen & Dermer Inc.
10500 Reisterstown Rd, Owings Mills, MD
21117, United States

Hours

MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours

Reviews

4.8
1,036 reviews
5 stars
882
4 stars
37
3 stars
6
2 stars
8
1 star
38
  • MH
    Margaret Hynson
    2 days ago
    3.0
    Beware of exorbitant prices In 2020 I had an HVAC system installed. I signed up for a service contract. My system had a 10 year warranty on parts and 5 years on labor. In April 2026 my AC stopped working. I already had an appointment for the regular maintenance check up scheduled so I let them know that the AC wasn’t working. I asked for a quote and was told that the problem had to be diagnosed first. The Farnen and Dermer technician determined that the motor was bad. The technician (Mario) was great. Very knowledgeable, courteous and a pleasure to work with. Once it was determined that I needed a new motor, I asked the price and how long it would take to complete the work. Mario called the office to find out. I was told it would take about a half an hour (as long as there were no problems). Much to my dismay I was told that it would cost $879.00 (this was a reduced price since I had a service contract) The repair took a half an hour. I watched it being done $879.00 for a half an hour job. I have never heard of a company charging that much for a half hour!!! Needless to say I won’t be doing business with Farnen and Dermer ever again!!
  • JJ
    jglass42000
    Apr 21, 2026
    5.0
    Had them out for a full system replacement. Gave us a great price with financing options and had an amazing crew come out to install. Definitely recommend
  • DC
    Daniel Cochrane
    Apr 21, 2026
    5.0
    Great work from Farnen and Dermer! We've used their services for almost 10 years now at two different homes, normal maintenance checks as well as three new systems as the old units have worn out. They are always prompt, efficient, and do a quality job. The new heat pump systems are great, by the way, and we could immediately see the difference in energy usage.
  • KB
    Kyle Bell
    Apr 19, 2026
    1.0
    Honestly it really wasn’t a good experience. They showed up took one look for 5 mins and said I need a new unit for $14k. We had a second contractor come and simply change out a wire and fix it for less than $200. Very dissatisfied.
  • HP
    Heather Pigott
    Apr 7, 2026
    5.0
    Had to replace my fan motor. Eric L. (tech) was knowledgable, explained everything, and assured me if I needed anything in the future don’t hesitate to give them a call. Zach was also very accommodating. Would highly recommend.

Brand Certified Facts from Farnen & Dermer Inc.

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Certified April 26, 2026Yext Knowledge Graph
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