Air Condition

Professional HVAC Repair & Service

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Air Conditioning Service & Repair

Automotive A/C & Heating Services in Towson, MD

Is your car blowing warm air from the vents? Does the fan only work at certain speeds? Cold air fading or turning warmer while at slow speeds or idle? These can all be signs of needing to service your vehicle.

Both Packard and Cadillac experimented with car air conditioning in the early 1940s. But Packard was the first to add a/c as an available option, simultaneously Hollenshade’s Auto Repair opened in 1939. We have seen the evolution of air conditioning in vehicles and are proud to offer expert automotive repair service to our customers. Contact us today for more information or to schedule service.

When having your car’s HVAC system diagnosed or repaired, it’s strongly encouraged to be prepared to leave the vehicle with us (2-3 hours). Finding a leak in the a/c system can be a tedious task. First, the system is recharged and recovered, then UV fluorescent dye is added to the system to pinpoint a leak. After the leak has been repaired, the refrigerant is topped off, and you can enjoy cold A/C again. As you can tell, our process is thorough and is not an in and out one hour service.

After visiting us for an A/C service, you will leave with a working HVAC system or a definite diagnosis with a repair estimate. After a week or so bring your car back for a complimentary re-inspection. During this trip, we will go over the system once again to verify all components are in their proper working condition. If any issues remain, we will find them. Our customers are #1, and we want them to be comfortable driving this summer with cold A/C and warm during the winter with hot heat. Trust Hollenshade’s to bring your car’s HVAC system back to its factory efficiency. Contact us today or call: 410-828-5750.


replacing ac condenser hollenshades auto repair of towson

Paul replacing an A/C condenser on a Toyota Camry

Does Your Vehicle Require R-1234yf Refrigerant?

Car manufactures are starting to move their product lines over to a new automotive refrigerant – R-1234yf. Until 2018, most vehicles under mass production left the lot with R-134a refrigerant. While both refrigerants are close, they are not exact due to different pressure ratings. Visit our vehicle brands page to verify which refrigerant your make and model is running.

In addition, the new refrigerant is also better for the environment with a break down time of a day compared to years with the old refrigerant. Auto manufacturers also claim leaks and potential issues that may arise with the HVAC’s cooling system will be more easily detectable.


Some of Our Common A/C Services:

Cabin Air Filter

Similar to the furnace filter in a house the cabin air filter helps clean the air that is brought into the cabin from outside the vehicle. This is an often overlooked component of the vehicle’s HVAC system that provides relive to individuals with allergies and helps reduce odors in the cabin.

Learn more about our Baltimore area cabin air filter services here.


Your car’s a/c compressor is a critical element in your car’s cooling system. When your fan stops blowing cold air through your vents or a noise is coming from the belt area, it’s time to schedule a service. During the Mid Atlantic summers, humidity and warm temperatures make it uncomfortable driving without your air conditioning running correctly.

Click here for more on compressor servicing.


Your car’s a/c condenser is very important in the cooling process. This is the part which removes heat from the refrigerant that cools your cabin. If the condenser is not operating at full capacity, you may experience cool but not cold air and a burning smell while your a/c is on.

Click here for more on your vehicle’s condenser.

Leaking A/C Condenser

Blower Motor

Does the speed of the fan only work on high speed or not at all? This can indicate a problem with the blower motor or blower motor resistor on your vehicle.

Click here to learn more about recognizing the signs of blower motor issues.


Having an evaporator that works is important for your car’s a/c system. When the evaporator is working efficiently, the heat is pulled from the evaporator coil. This helps keep the liquid refrigerant as cold as possible.

Click here to learn more about our evaporator repair services.

Leaking Evaporator Core Identified by Dye Stain in Condensation Drain Hose _ Hollenshades Auto Service Towson

Leaking Evaporator Core Identified by Dye Stain in Condensation Drain Hose

Refrigerant Recharging

A full system is required for peak function of the car’s air conditioning system. Since most newer vehicles only require 14-28 ounces of refrigerant, you must have an ASE certified mechanic complete the charging, if required.

Learn more about refrigerant recharging here.

Refrigerant Leak from Failed Condenser Connection Fitting O-ring _ Hollenshades Auto Service Towson

Refrigerant Leak from Failed Condenser Connection Fitting O-ring

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The shop will be closed May 27th through May 29th so that our team can spend time with their loved ones in honor of Memorial Day.