• Family Owned and Operated
  • Available 24/7- Same Day Service
  • 100% Satisfaction Guaranteed
  • Straight Forward Pricing, No Surprise Fees
  • Experienced and Trained Technicians
  • Proudly Serving Maryland Since 1902
Farnen & Dermer $89 New Customer Special

Spring Tune-Up Special for a limited time only! Get your HVAC System ready for the warm weather ahead. Call today to schedule!

*Offer valid for new customers only. Limit one per person. Some restrictions may apply. Call for details.
Valid from Apr 1, 2021 - May 31, 2021
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  • The technicians are always great.

    “We’ve ALWAYS had great service from Farnen & Dermer. The technicians are always great. Glenn A. was our technician today and he was awesome. #HighlyRecommend”

    - Douglas M.
  • These folks are top-notch.

    “These folks are top-notch. Mr. Dermer was easy to work with. He clearly stated the job to set my expectations. The gentleman that came to do the work was very professional and walked me through the install. T”

    - Clark H.
  • Very Knowledgeable of my heating system

    “Caleb K did a great job! He was professional, Very Knowledgeable of my heating system, and offered ways in which I could keep it healthy.”

    - Terrence S.
  • We have no complaints and love our new system.

    “Farnen & Dermer were excellent people to work with from start to finish. They were professional and knowledgeable. They answered all of our questions (and we had A LOT of questions.) They provided the lowest estimate and best warranty among the other H”

    - Dan K.
  • They were professional and friendly.

    “The Farnen & Dermer team did a great job installing our new HVAC unit. Jay was very helpful and answered all of my questions.”

    - Jen K.
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