Air Conditioning

Owings Mills AC Services

Over a Century of Keeping Baltimore County Cool

Our ancestors two hundred years ago would have loved to have experienced the hottest of summers from a climate-controlled home. Whether your air conditioning system is old, out of date, non-existent, or in need of quality maintenance, Farnen & Dermer can help you keep your equipment running as smoothly and efficiently as possible. We proudly provide air conditioning services to Owings Mills and the surrounding communities in Baltimore County.

Contact us online or at (410) 600-7964 for a Free Estimate on your next AC service in Owings Mills and the surrounding areas today!

Air Conditioning Maintenance

There is nothing worse in the hot Maryland summers than to have your air conditioning suddenly stop working. Fortunately, you do not have to wait until you are experiencing a cooling emergency, or lots of humidity, to take care of your system. Annual maintenance on your air conditioner will help clean out the dirt and dust that has been accumulating over time, lengthen the life of your system, increase energy efficiency, and identify repairs before they become worse or cause a breakdown requiring replacement.

During your air conditioning maintenance appointment, our certified technicians will:

  • Check operating pressures and temperatures
  • Clean and inspect the outdoor unit
  • Check the refrigerant level in the unit
  • Monitor the air flow and check the evaporator
  • Visually inspect your air conditioner for signs of wear or rust
  • Inspect the overall function of the system

Our Service Agreement Plan

Farnen & Dermer offers an Energy Saving Maintenance Agreement for our customers. With our maintenance plan, we perform one cooling tune-up, and one heating tune-up each year. By cleaning and maintaining your system regularly, you can be assured your air conditioner is operating at peak efficiency, reducing energy costs, and lengthening the life of your system.

More Information:

AC Repairs & Emergency Service

Air conditioners never pick beautifully cool days to break. Instead, you may find yourself in the dog days of summer without a hint of cool air to be found. Sure, there are some DIY AC repair tips, but they will only take you so far… The friendly technicians of Farnen and Dermer have been meeting the emergency service and repair needs of their Baltimore, Maryland customers for more than 100 years. Available 24 hours a day, 7 days a week, we service all brands and models of air conditioners. Our friendly faces will have you enjoying cooler temperatures in no time.

AC Replacements & New Installations

Even if your air conditioning system is meeting your needs, if it is more than ten years old, you may be using more energy to cool your house than you need to. Farnen and Dermer installs energy-efficient American Standard and York equipment that is designed to cool your home using less energy, putting more money back into your pocket where it belongs. With federal tax credits, utility rebates, and energy savings, your new air conditioning system may cost less than you think. For a free, in-home cooling system consultation, contact Farnen and Dermer today. See our financing options.

Want to know exactly what our COO, Zach Dermer did when his own AC unit died? Find out HERE.


At one point, thermostats were nothing more than a switch on the wall, designed to turn your air conditioner on and off. Over time, they became equipped with temperature gauges that allowed the air conditioner to automatically turn on when the room reached a certain temperature. For many years, thermostats served this singular function based on the user’s preferred temperature. Eventually, a timer function was added to an air conditioner’s thermostat giving the user a chance to create weekday and weekend programs that met their cooling needs. Instead of maintaining a cool 68 degrees while the homeowner was at work, the programmable thermostat allowed the homeowner to return home to a comfortable temperature without paying for unnecessary energy expenditure throughout the day. Today, thermostats are one of the easiest upgrades a person can make to create a more energy-efficient home.

Programmable thermostats are designed to change the temperature in your home based on the hours in which your home is occupied. The user is able to set several times and temperature settings, customizing their home’s air conditioning use to their needs. For instance, you may leave home at 7:00 am and return home at 5:00 pm. A programmable thermostat would allow your home to sit at a balmy 80 degrees until 4:45 pm when your air conditioner would turn on, cooling the home for your return.

WiFi-enabled thermostats are equipped with technology that allows you to control your home’s temperature from your smartphone. Where programmable thermostats are ideal if you have the same routine day in and day out, WiFi thermostats, such as the Nest, can be controlled with the touch of a screen. They also come with smart technology that “learns” your daily routines and anticipates your heating and cooling needs.

Are you one of those people who like to keep learning? Read this blog post: What Actually IS an Air Conditioning Unit? If you have any further questions, our air conditioning service experts in Owings Mills are here to help. Contact us today.

Air Cleaners

By now, it is no secret that the air inside your home can be just as polluted as the air outside of your home. And yeah, there are some DIY AC cleaning activities you can perform, but that’s still no reason to forgo professional assistance and efficient, effective air cleaners.

Every heating and cooling system is equipped with air filters that, depending on the quality, are designed to reduce the level of dust, allergens, and particles in the air. While they are effective to a point, Aprilaire Air Cleaners are designed to remove 99.9 percent of all of the pollutants left behind by traditional filters. Some people with severe allergies or sensitivities may be tempted to use a portable air purifier. While effective for a small area, the only way to address pollutants in an entire home is with a whole-home air cleaner. Electronic air cleaners, in particular, are known to trap particles as small as .1 microns in size while improving airflow within your home. For more information about air cleaners or to schedule your customized in-home quote, contact the professionals at Farnen and Dermer.

To learn more about our air cleaning and air scrubbing services, contact us today at (410) 600-7964!

Air Scrubbers

No matter how many times we clean our homes, we are often left with airborne bacteria, viruses, and germs that gradually come to rest on all of the surfaces in our space. ActivTek Air Scrubbers use germicidal UV light rays along with a proprietary catalytic process to produce air-scrubbing molecules of oxygen and hydrogen. These molecules then work invisibly, without harmful chemicals, to rid the air in your home from dangerous germs, thereby keeping the surfaces in your home cleaner. Imagine being able to prevent illnesses in your family without constantly scrubbing with harsh or harmful chemicals. Best of all, air scrubbers keep your heating and air conditioning systems clean, germ-free, and functioning as efficiently as possible. For more information about how an air scrubber can change your home’s health, contact Farnen and Dermer for your in-home consultation.

  • “Farnen & Dermer - Professional HVAC Technicians with quality HVAC components at reasonable costs.”

    - Kevin S.
  • “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.
  • “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.
  • “Charlie was absolutely wonderful! He was beyond courteous and friendly - easy to talk to! Determined the trouble promptly and explained everything - including a few tips to help keep our system in good shape.”

    - Jami L.
  • “Charlie is extremely helpful and knowledgeable. His expertise helped me to understand my system and feel comfortable with the boiler system in my house. He took the time to explain everything to me and walk me through checking my system.”

    - Steve H.
  • “Thank you for the quick install of my HVAC system. Everything went smoothly and the technicians were great.”

    - Britt F.

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