HVAC reviews in Owings Mills, Maryland

James and the other tech were very courteous and were very business-like in installing the new furnace and instructed us where necessary!

Caleb & Crew did a great job. They showed up exactly on time, worked all day, cleaned up when they left, and made sure I understood everything before they left. Ed came out to do the quote and was also very thorough in helping me understand the needs of my house and the options. Prices were in line with other quotes I received. We're looking forward to continuing with them for maintenance and care in the future. Would recommend.

I scheduled my appointment and had same day service! It was amazing. Technician was friendly and timely! Great job

As always, the service technicians are always professional and competent. When they do the work they leave the house the same way as they found it. Extremely neat and conscientious.

The team was friendly, professional, and had our new furnace installed in just one day. They did excellent work and made the whole process easy. Highly recommend!

Technician Glenn arrived as scheduled. Glenn evaluated the thermostat. Glenn explained how to program the thermostat. We requested he install Air Scrubber Air Purification System.
Glenn installed the system. He explained how the Air Purification functions.
He acted professionally and was friendly. He had good knowledge of HVAC systems.

As was the case 20 years ago when they did a boiler installation for me, the workers were very skilled, accommodated my requests, answered my questions, and tested the system thoroughly before finishing. I would highly recommend them.

Wanted to give a shout out to Sean who worked diligently to correct problems we asked for as well as figuring out a long term problem that many others had no real idea how to fix. He was a pleasure to work with, timely and put in long hours to get the job done right!

The overall experience is amazing. One problem we are having now is that the entire HVAC unit was replaced and when they cut the air on, it contaminated the entire house with mold and now me and my wife are very sick and having physical reactions. We hired a mold company to come treat the air ducts but both of us are very sick now. There’s heat and air circulation now but it’s contaminated with mold. I spent 12k to fix the problem and really don’t know what to do now. The unit is definitely making us very sick though.

I am writing to express my sincere appreciation for the excellent service I received during the recent installation of an air conditioning unit at my home. I would especially like to commend Eric L. for his outstanding professionalism and workmanship throughout the process.

From start to finish, Eric demonstrated expert knowledge, attention to detail, and a courteous attitude that made the entire experience smooth and stress-free. He arrived on time, worked efficiently, and ensured the installation was completed to the highest standards. He also took the time to explain the new system thoroughly and answer all my questions.

It is not often that you come across a technician as capable and respectful as Eric, and I believe he is a great asset to your company. Based on this experience, I would not hesitate to recommend your company to friends and family for any future HVAC needs.

Thank you again for a job well done.

Caleb and the team did a great job on this emergency install. He spent time going over the new thermostat and exactly how the dual fuel system works.
Highly recommend.

Glenn A. was polite, experienced and explained everything so that we could understand what was going on with the heating system. I like that the company sent a picture of who was coming to the house ahead of time.

On time, polite, clean, and explained the work that was done. I love the fact they send a text and email of a picture & name of the tech who is coming to your house. Nice peace of mind. I would highly recommend.

He didn’t want to do the repair, they just wanted to sell me a new system, my furnace got repaired by another company for 100 dollars one small part.

We appreciate Eric arriving early for what we considered an emergency situation at our home . Eric was very professionally and knowledgeable of replacing our hot water heater. He provided information on the various parts of the equipment.

I’ve had Farnen & Dermer install my brand new AC unit recently and today they replaced my old leaking 40 gallon water heater with a brand new one but this one is even better according to the new HVAC codes. With each install I had a great, prompt, and satisfying experience. Their prices are fare and reasonable and these guys know what they’re doing. I definitely recommend this company for all of your household needs! Thanks Again Guys

Farnen & Dermer was very responsive. I placed a service call on a Saturday with their automated attendant, requesting service on Monday at 9am. By 7:30am on Monday, I had a text confirming my appointment. The technician, Charlie, showed up around 9am, diagnosed the problem, and suggested a fix to get more life out of our 16 year old device. Very pleased with the service!

Called for a whole house humidifier and air purifier due to poor air quality in the house. Service was really fast and reasonably priced. Provided different options to make payment affordable.

Replaced gas hot water heater. Between locating the water shut off valve, moving the old heater out and the new one in and reconnecting the gas line, it was a long job which the men did cheerfully and competently. So far so good.

I have a service contract with Farnen & Dermer. They came out for service and found a bad Supco Super Boost SPP6. Proceeded to charge me $250 for a part I can buy on Amazon for $15.

Then proceeded to charge another $250 to renew the service contract.

This is not how you treat loyal customers.

WARNING: This company is practicing an imaginary system called planned obsolescence that this company for whatever reason is trying to convince their consumers with older units in their venerable state that their tech can not fix older units due to parts are no longer available. On Friday Jan 30, 2026 the tech arrived he sat down on a bucket and they claimed I need a board and a motor pressuring me to buy new for round $10,000; unnecessary repairs without physically testing my furnace, only to find out second opinion the next day all I needed was a new battery located inside my furnace and a clean filter that this angel of a tech had on his company work truck in this frigid weather that the Farnen & Dermer tech left my family that Friday Jan 30, 2026 the previous evening without any heat. WARNING
Misleading customers about repair feasibility is unethical sales tactics.