At Your Service Heating and Cooling LLC is a family-owned HVAC company serving Baltimore, MD, since 2013. They provide a full range of heating, cooling, and indoor air quality services including repair, installation, and maintenance of air conditioners, furnaces, heat pumps, and HVAC systems. The company carries Trane products and emphasizes skilled technician training to ensure quality workmanship. They are accredited by the BBB with an A+ rating and have received several industry awards. Their services cover both residential and commercial needs with a focus on customer care and indoor comfort.

ABC Cooling & Heating LLC provides heating and cooling services in Baltimore, MD. They offer repair and installation for air conditioners, furnaces, heat pumps, and other HVAC systems for both residential and commercial clients. The company emphasizes customized solutions and employs licensed professionals to ensure dependable indoor comfort.

Perry Hall Heating & Air is an HVAC company based in Baltimore, MD, offering heating and air conditioning services for residential and light commercial customers. Their services include installation, repair, and maintenance of furnaces and air conditioning systems, as well as tune-ups and replacement of new equipment. The company is licensed and insured, with Maryland Master HVAC certification, and provides custom design and installation for homes. Perry Hall Heating & Air is known for accurate diagnostics and efficient installations, serving the Baltimore area with a focus on customer satisfaction.

Frank J. Klein & Sons Inc. is a family-owned HVAC and plumbing service company based in Baltimore, MD, serving the metropolitan area since 1929. They provide installation and repair services for heating and cooling systems, including air conditioners, furnaces, boilers, heat pumps, and geothermal systems. The company also offers indoor air quality solutions such as duct cleaning, electronic air cleaners, and humidifiers. Their skilled technicians handle everything from minor repairs to complete system replacements and offer planned maintenance agreements to help maintain equipment performance.

Aire-Craft Heating & Cooling Co Inc is a family-owned HVAC company serving Baltimore, MD since 1998. They provide a wide range of heating and cooling services including repairs, installations, geothermal heat pumps, indoor air quality solutions, duct fabrication, and commercial refrigeration. Their team includes master HVAC technicians who are licensed and insured, offering expertise in servicing air conditioners of any make or model. Aire-Craft also fabricates custom air ducts using advanced equipment and offers whole house clean air systems to improve indoor air quality.

Supreme Service Today is an HVAC and plumbing contractor based in Baltimore, MD. They provide a wide range of services including air conditioning repair and installation, furnace and heat pump services, boiler maintenance, duct cleaning, indoor air quality testing, and plumbing repairs. Their certified technicians are factory-trained and offer expertise in both heating and cooling systems, as well as water heater and drain services. The company offers emergency and 24/7 live answering services to support urgent needs. Supreme Service Today also specializes in ductless mini split installations and provides comprehensive indoor air quality solutions.

A.J. Michaels is an HVAC and plumbing company serving Baltimore, MD, specializing in heating, cooling, plumbing, and home performance services. They provide installation and repair for furnaces, boilers, heat pumps, air conditioning systems, mini splits, and duct cleaning. The company offers advanced solutions such as SpacePak ductless air conditioning and Aeroseal duct sealing, backed by engineering expertise and continuing education for their technicians. Established in 1978, A.J. Michaels has installed over 35,000 systems in central Maryland and is recognized for its energy efficiency achievements and industry certifications.

Mechanical & Gas Services is an HVAC company based in Baltimore, MD. They provide air conditioning, heating, water heater, boiler, and ductwork services, including preventative maintenance and outdoor coil cleaning. Their expertise covers a range of HVAC repairs and tune-ups to maintain system performance.

Frosty Refrigeration Co is an HVAC company serving Baltimore, MD, and the surrounding Central Maryland area. Established in 1951, the company offers sales, installation, repair, and maintenance services for air conditioning, heating systems, heat pumps, geothermal systems, ductless units, and radiant floor heating. They also provide indoor air quality products and custom metal duct fabrication. Frosty Refrigeration offers 24-hour emergency on-call service for contract customers and works with both residential and commercial clients.

United Air Temp is a Baltimore, MD-based company providing heating, cooling, plumbing, and whole-home generator services. They offer installation, repair, and maintenance for air conditioners, furnaces, heat pumps, boilers, mini splits, geothermal heat pumps, and water heaters. The company also specializes in whole-home generator installation to ensure continuous power during outages. Established in 1931, United Air Temp has over 90 years of experience serving the Baltimore community. They provide 24/7 emergency repair services for heating and cooling systems.