Statistics Welcome to B & B Air Conditioning and Heating Service Company Inc !

 B & B is a full service air conditioning and heating contractor offering air conditioning service, air conditioning repair, heating service, heating repair, and all indoor air quality needs (i.e., humidifiers, air cleaners, air purifiers, etc.) With offices strategically located in Maryland (Montgomery, Frederick, Anne Arundel, Prince Georges, Howard, Carroll Counties), Washington DC, Northern Virginia, Loudoun County Virginia we are able to provide our customers with fast, dependable localized service. 

Staffed with a full complement of highly trained management and technical experts, each B&B location has their own parts department, sheet metal shop and fleet of fully equipped GPS dispatched trucks, to provide a speedy response and full service, twenty-four hours a day. 

Lennox Systems

 Representing All Major Brands of Heating, Air Conditioning and Heat Pump Systems....

B & B specializes in designing systems to specifics indicated by individual need. Homes and lifestyles vary: and B&B, with factory-trained technicians and experienced engineers, are always prepared to recommend an appropriate, energy efficient, environmentally friendly, cost effective system.



B & B is now offering installation, service/repair of Whole House Generators! With the winter and spring storms progressively worsening having a whole house generator provides your family the benefit of maintaining your normal lifestyle during power outages that may last days. Ask your B & B service technician about these services on our next visit or give us a call and we will assist you with any questions you may have.


Branch Offices


12324 Wilkins Avenue Rockville MD 20852 

7921 Queenair Drive #106 Gaithersburg MD 20879

2816 Dorr Avenue Fairfax VA 22031

183 East South Street Frederick MD 21701

22570 Glenn Drive #7 Sterling VA 20164

1526 Jabez Run Millersville MD 21108

6725 Santa Barbara Ct #101 Elkridge MD 21075



Find the B & B Office Nearest you


All B & B Office phone numbers are also listed
under look up after entering your zip code 

google map

View B & B AC and Heating in a full screen map

What clients said

 We are very happy with our new a/c and heating system, the Air Scrubber and Aprilaire filter were great additions to our system. The air quality in our home is much improved!

David B. Laurel, Maryland 20707

Steven was outstanding. Great Job. Very, very satisfied with his work. He's terrific !

Jon G  Catonsville, Maryland 21228

Thank you for your excellent service throughout the years. I appreciate all that you do for me. $300.00 well spent! All the best

John M.  Ellicott City, Maryland 21043 



Energy Loan Link

 Statistics Review of B & B AC & Heating Services



  • Service Contracts
  • Preventive Maintenance
  • Trained, Licensed and insured technicians
  • 24 hour answering with response service
  • Major inventory of parts
  • Free Second Opinions
  • Free replacement and new system estimates
  • Generator service and installation
  • Humidifiers
  • Rotobrush Duct Cleaning
  • Air Quality

Request A Free Estimate On Equipment

StatisticsReview of B & B AC & Heating Services



In addition to HVAC services B & B installs and services whole house Generators



Carbon Monoxide Detectors

co detector

A carbon monoxide alarm/detector should be used whenever a combustion system is used.


B & B Institute


All service technicians, installation personnel, and engineers have completed or are in the process of completing additional training at B&B's own accredited schooling program.