D&A Service Company delivers exceptional comfort for your home or business. Since 1981, our highly skilled technicians have built decades of experience providing exceptional HVAC maintenance, repair, and installation services for all your needs. We’re here for you 24/7 with emergency service, so you can always breathe easy knowing your home’s climate is under control.
We offer a wide range of HVAC equipment to meet your needs, including air conditioners, furnaces, air handlers, boilers, ductless systems, heat pumps, and water heaters (tanked & tankless).
Our services include HVAC maintenance, repair, and installation for residential and commercial properties. We also offer 24/7 emergency service.
We provide expert installation, repair, and maintenance services for all types of air conditioning systems.
We specialize in furnace installation, repair, and maintenance, ensuring your home stays warm and comfortable throughout the winter.
We offer comprehensive air handler services, including installation, repair, and maintenance.
We are experts in boiler installation, repair, and maintenance, providing efficient and reliable heating solutions.
We install and service ductless heating and cooling systems, offering customized solutions for individual rooms or zones.
We provide expert heat pump installation, repair, and maintenance, maximizing energy efficiency and comfort year-round.
We offer indoor air quality solutions, including air purifiers, humidifiers, and ventilation systems, to improve the air you breathe.
We install and service both tanked and tankless water heaters, ensuring a constant supply of hot water for your home.
Regular HVAC maintenance is essential for optimal performance and longevity. We offer comprehensive maintenance plans to keep your system running smoothly.
We provide HVAC services for commercial properties, including installation, repair, and maintenance of large-scale systems.
- Fully Accredited and Insured
We are fully licensed and insured, providing you with peace of mind and protection.
- Experienced Technicians
Our highly skilled technicians have decades of experience providing exceptional HVAC services.
- 24/7 Emergency Service
We are available 24/7 for emergency HVAC repairs, ensuring your comfort and safety.
- MDHVAC
Licensed by the Maryland HVAC Board.
- WSSC
Licensed by the Washington Suburban Sanitary Commission.
- DC
Licensed by the District of Columbia.
“Our heat went out unexpectedly on one of the coldest days of the year. D&A had someone out in under 3 hours. The staff and techs are very polite and knowledgeable. They were very thorough and did a great job. Would highly recommend!”
“The installation of my new furnace and A/C was just completed. I also needed to have damaged return ducts in the attic replaced. A new area for easy filter replacement was cut out and placed inside my home. These guys were very professional and easy to talk to. I wouldn't hesitate to refer this com...”
“I got 5 bids to put split ductless units in my 1915 bungalow. The people from D&A Service were prompt and polite in their communication, their bid was the second lowest - but the lowest bid didn’t include the electrical work needed and did not come with the warranty and guarantees that D&A offered...”
“Great experience with a gas water heater replacement. The office dispatch and the technicians were all prompt, reliable, and pleasant to work with. It was only a few hours from the initial service call to getting a quote, and then the replacement happened within that week. My Technician was knowledg...”
“Utterly impressed! I have never spoken to an office that was this pleasant/professional. My technician was great as well, but the form of a business relationship & professionalism starts with the first call-in, and I was blown away by the knowledge and friendliness. Kudos to this company and their o...”
“I was running a few minutes late for my appointment, but I called the office and explained, and the tech patiently waited for me. This was the first time they checked my systems, so went over completely. He went very thoroughly through both of my systems. When he was done gave me a report. I am very...”
“Very responsive, fair pricing, got the job done a week after scheduling it. The crew was very courteous, extremely clean installation, and overall, I'm highly impressed. Recommend and would use them again in the future! Thank you!”
“Impressed!! Tech was very informative and helpful. If I’m being quite honest the icing on the cake was their excellent office staff it grabbed and kept my attention. Very full of knowledge and customer service from the very beginning, phone call was so pleasant and stands out more than any other c...”
