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.

Anytime Services & Maintenance Inc is an HVAC company serving Baltimore, MD, specializing in residential and commercial heating, cooling, and ventilation services. They provide sales, installation, maintenance, and repair for a variety of systems including air conditioners, furnaces, heat pumps, and boilers. The company offers energy audits to help identify insulation and thermal issues that can reduce energy costs. Anytime Services & Maintenance Inc has been serving the White Marsh area for many years and is available 24/7 for HVAC questions and emergency services.

GreenDena Inc. is an HVAC contractor serving Baltimore, MD, specializing in air conditioning repair and installation, geothermal heat pump systems, and thermostat installation. The company offers residential and commercial HVAC services with a focus on green energy solutions such as geothermal and radiant floor heating. Established in 2002, GreenDena Inc. brings over 20 years of industry experience to its work.

Total Energy Concepts is an HVAC contractor based in Baltimore, MD, offering services in air conditioning, furnace, heat pump, and geothermal system installation, repair, and maintenance. They serve Harford and surrounding counties, helping customers find efficient heating and cooling solutions for homes and businesses. The company specializes in geothermal heat pumps, which use consistent ground temperatures to provide energy-efficient year-round comfort. Total Energy Concepts highlights the environmental benefits and cost-effectiveness of geothermal systems, recognized by the EPA as a leading green technology.

Supreme Service Today provides heating, cooling, and plumbing services in Baltimore, MD, including areas like Halethorpe, Timonium, and Silver Spring. They handle AC repairs, furnace and boiler maintenance, heat pump services, mini split installations, and indoor air quality improvements such as air purifiers and filtration systems. The company also offers plumbing solutions, including water heater repairs, drain cleaning, gas line repairs, and water treatment with filtration and softening systems. Known for emergency HVAC and plumbing repairs, Supreme Service Today responds to urgent issues like burst pipes and heating failures. Their team is licensed and experienced, serving the local community for several years with a focus on lasting solutions.

GT Mechanical Services is a mechanical contractor based in Baltimore, MD, offering a full range of HVAC services including installation, repair, and maintenance of air conditioning, furnaces, heat pumps, boilers, and HVAC systems. They serve the DMV area and provide 24/7 emergency HVAC service to address urgent heating and cooling needs. The company works on all makes and models and handles both residential and commercial projects. GT Mechanical Services also offers building automation and financing options for their customers.

M & A Heating & Cooling offers HVAC installation, repair, and maintenance services in Baltimore, MD. They handle residential, commercial, and industrial projects, providing system design, testing, and certification to ensure safety and efficiency. Their capabilities include gas furnace and boiler repair and installation, as well as complete HVAC system solutions tailored to customer needs.

Crosby Heating & Cooling provides a full range of HVAC services in Baltimore, MD, including repair and installation of air conditioners, furnaces, heat pumps, and boilers. They also offer indoor air quality solutions such as air purifiers and humidifiers, along with seasonal tune-ups to maintain system efficiency. The company is equipped to handle 24/7 emergency HVAC services to address urgent heating or cooling problems. Serving the Towson community, Crosby Heating & Cooling combines experienced technicians with comprehensive HVAC solutions to support year-round indoor comfort.

Got Ductless: Baltimore Showroom is a mini split installation contractor located in Baltimore, MD. They specialize in installing ductless mini split systems and support a variety of mini split brands. The business is SAM.gov verified, indicating compliance and eligibility for federal contracts and partnerships.