Licensed, Bonded & Insured

• License HVACR #01-6538 MHIC #28267 •

Welcome to Mullhausen Heating and Air Conditioning Co, proudly serving the Harford & Baltimore County areas. With 20 years experience in heating, ventilation and air conditioning service and sales, you can count on us for high quality service and affordable rates.  Our technicians take pride in their work and make sure it is done right the first time. We know the harmful effects of unclean air in the home and work diligently to make your house energy efficient.

Find more information about the advantages of our energy-efficient HVAC systems. We are here to serve you!

It is important to have your furnace and air-conditioner run at their peak efficiency.  It is also just as important to have an annual inspection done to prevent costly and untimely breakdowns and extend the life of your heating and cooling system.  Whether you heat and cool your house with oil, gas or electric, we have the experience and training to service all brands.  We offer service contracts for all types of systems, along with parts and labor warranty contracts.  If your system is in need of replacement, we can gladly meet your needs.  You can save up to 35% of your annual fuel usage with a new high efficient oil-fired boiler or upgrade your old heating and cooling system with a high efficient furnace and air-conditioner and save up to 40% on utility bills.

Our business has expanded to install and service Generac home standby and portable generators.  

Special financing is also available this year to our customers for new system installation, provided by Synchrony Financial, subject to credit approval (minimum monthly payments required).

Let us help you choose a heating and cooling system that is tailored to address your needs and comfort level, as well as choose a reliable and safe source for your household backup power means.

Services & Products Mullhausen Heating and Air Conditioning Co provides:

• Generac Home Standby Generator Service and Installation
• Generac Portable Generator Service and Sales
• Oil Furnace Service and Installation
• Gas Furnace Service and Installation
• Heat Pump Service and Installation
• Air Conditioner Service and Installation
• Boiler and Oil-Fired Water Heater Service and Installation
• Duct Work Design and Installation
• Oil Tank Installation
• Humidifier, Media Air Filter, and Electronic Air Cleaner Installation