4.5 
558 *The Angi rating for Heating And Air Conditioning Service companies in Chillum, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Chillum, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.
Last update on November 21, 2025
Serving Chillum, MD and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"Found a simple solution to what I thought was a major HVAC problem that would have otherwise led me to replace the unit. Would definitely hire again."
Serving Chillum, MD and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"I HIGHLY RECOMMEND HVAC Superior Solutions Inc!! They came over to diagnose my AC problem on very short notice. I decided to get a whole new system and they took great care in all the details and worked overtime to get the job completed. I am very satisfied with the new system and with the great customer service."
Serving Chillum, MD and surrounding areas
Approved (Corporate)
In business since 2000
Free estimates
Credit card accepted
"Cozy Heating And Cooling is a local HVAC service contractor located right here in Woodbridge, VA. Since 2018, Cozy Heating And Cooling has provided dependable service and quality repair work in metro areas of DC, MD and VA. We specialize in satisfying all heating and air conditioning needs to ensure maximum comfort with the highest performance standards from employee training to customer care. All of our technicians are fully certified and trained to install and repair the latest HVAC equipment and technology."
Serving Chillum, MD and surrounding areas
Approved (Corporate)
In business since 1970
Free estimates
Warranties offered
"I am SO pleased with this experience with GAC and highly recommend them! OUTSTANDING information and research on our behalf by Kelly for estimate options and finding the best unit and price for our needs. Chris was very impressive when he came to our home for preparation of the HVAC air handler/heat pump installment. Top notch work by John and the GAC crew on the actual work putting in my unit. They gave us the option and were qualified to run/install a new wire for our electric needs to have all energy savings of the equipment. Easy scheduling with Monica and follow-up too. ALL the GAC staff were happy to answer our various questions in full detail so we understood everything in this project and could make informed decisions. GAC found a high quality unit (Bryant) that suited our needs AND qualified for a PEPCO rebate, which they quickly filed on our behalf. We have been customers for years with GAC for maintenance and with this install, plan to be for years to come."
Serving Chillum, MD and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"After having a very bad experience with another HVAC company, I used them and quickly saw how the other HVAC company was over charging. I found my technician to be very knowledgeable, hardworking and honest. He repaired one AC unit and replaced the other. Would definitely recommend!"
+8
Serving Chillum, MD and surrounding areas
Approved
In business since 1936
Free estimates
Emergency services offered
"Brian and Ray did an outstanding job setting up my new HVAC system. They performed service above and beyond expectations. I would highly recommend McCrea and these individuals looking for high quality HVAC work."
Serving Chillum, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2010
Free estimates
Emergency services offered
"HVAC replacement was reasonable and installation was timely"
+118
Serving Chillum, MD and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"USA HVAC Services arrived on time. Professional, knowledgeable and efficient!!! Price was reasonable for the work done."
+7
Serving Chillum, MD and surrounding areas
Approved
In business since 1967
Free estimates
Emergency services offered
"Very professional and well informed. Educated me on my HVAC and how to maintain it.
"
+13
Serving Chillum, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Credit card accepted
"Julius has been really helpful and knowledgeable about how HVAC works. He cleaned the system really good and I have no problems at all. Was very professional and thorough with the job; made sure we were well informed of what we having performed and offered services without pressure. Really happy we went with this company. Highly recommend!"
+12
From average costs to expert advice, get all the answers you need to get your job done.
When a TXV valve goes bad in your AC, you’ll notice it’s not cooling your home. Read on to learn more about HVAC TXV replacement costs in Washington, DC.
When a TXV valve goes bad in your AC, you’ll notice it’s not cooling your home. Read on to learn more about HVAC TXV replacement costs in Baltimore, MD.
Heating and cooling system on the fritz? Discover the factors that go into HVAC repair costs in Washington, DC, and how you can save money on this project.
Retrofitting your house for AC is, surprisingly, not too hard. Here’s what you’ll need to consider to make it happen.
What is an air source heat pump, and is it right for you? Air source heat pumps are an effective and efficient home climate control solution. Read on for more information.
Your air conditioning unit is a lifesaver during those blisteringly hot summer months, but common air conditioning mistakes may be increasing your energy bill and decreasing overall efficiency. Read on to learn how to avoid them.
