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 SINCE 1957








B & B is your answer to a full service total comfort HVAC provider whether you are in need of emergency service, preventive maintenance, or wish to enhance your home with a state of the art air quality solution we are your perfect fit.  With our offices strategically located throughout the Baltimore/Washington, Frederick, Annapolis, Columbia, Elkridge, and Northern Virginia (Fairfax, Leesburg, Sterling , Ashburn, Arlington) areas we are able to provide our customers with fast, dependable localized service.

With technology and standards, rapidly changing B & B stays on top of new products, and requirements in order to provide our customers with the best options for their most important investment, their home.

Staffed with a full complement of highly trained and licensed technical experts, each B & B location is equipped to provide a speedy response and full service, twenty-four hours a day. We provide service for all makes and models of air conditioners, heat pumps, gas-fired furnaces, oil-fired furnaces, boilers, humidifiers, air purification, and gas-fired fireplaces. In addition to the heating and cooling systems we are also offering service and installation of Home Generators. With power outages increasing at a 7.2% rate per year (source: NOAA) it makes sense to install a whole house Generator in your home.  Read More about our Generator Service


 B & B technicians as a condition of employment attend a intensive schooling program from basic to advance technologies. Our instructors are licensed Masters in all trades and work hard to prepare a challenging curriculum. Our school is held in a separate facility the students experience not only hand written instruction but they also have training stations for the hands-on experience. In order to advance from one level to another the employee must have a passing grade above 85%.





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Customer Lobby Link

What customers said

Best heat pump installation I have ever seen, outstanding craftsmanship. Took the time required to do the installation correctly. Thanks for a job well done.

R R Laurel MD


Love your prompt service keep up the good work!!

Donald W    Jessup MD 


We are very happy with our new A/C and Heating System; the Air Scrubber & Aprilaire filter were great additions to our system. The air quality in our home is much improved!

David B.  Laurel MD


John and his helper Guy did a awesome job. They are like family to us. Great Guys.

L. Norris Germantown MD


Excellent Job - Professional  & On-Time Thank You!!

Benny Y Gaithersburg MD


We were very happy with the installers and what a super job they did. Bob Nestor and helper were very professional.

R Ehrenreich  Gaithersburg MD











AFC Financing Available


AFC Financing Logo

Financing available to qualified applicants. Click to apply.


Indoor Air Quality

B & B offers indoor air quality solutions humidifiers, air cleaners, and purification systems...


air quality photos

Air Conditioning & Heating

Service, Maintenance/Repair, and Installations of all makes and models



Certified Maintenance-Service Agreements

B & B offers service contracts for your heating and cooling system, humidifiers, air cleaners, generators, etc. have peace of mind knowing your equipment is being maintained saving money from costly repairs.



Prevent costly breakdowns by having your home's comfort system inspected today.
 $89.95 per system
Not Valid with any other offer or discount. Residential Only




  • Maintenance Service Agreements
  • Preventive Maintenance
  • Trained, Licensed and Insured Technicians
  • 24 hour answering with response service
  • Major inventory of parts
  • Service All brands
  • Free Second Opinions
  • Free Replacement/New System Estimates
  • Generator Service and Installation
  • Humidifiers
  • Air Purification Solutions
  • Rotobrush Duct Cleaning

Tips and Information

Newsletter Link 



Air Conditioning Tips

Heat Pump Tips



Office Locator

Find the office that services your area simply input your zip code below


Multiple Locations

Serving the Baltimore/Washington Area & Northern Virginia

DC/Maryland Metro Area

Rockville Office & Corporate Headquarters


DC Metro Area 301.881.2700
Gaithersburg 301.330.0040
Germantown 240.243.1150
Silver Spring 301.589.3440

Anne Arundel County

Annapolis 410.266.7900
Odenton 410.672.1551
Toll Free 866.366.9975

Baltimore Metro

Baltimore 410.876.2100
Harford County 410.592.9118
Timonium/Towson 410.592.9118

Calvert County


Carroll County

Westminster 410.848.4700

Frederick County

Frederick 301.662.0611
Mt. Airy 301.831.4355

Howard County

Columbia 410.997.2700
Toll Free 888.453.6811

Queen Anne County

Kent Island 410.820.4684

Prince George's County

Bowie/Mitchellville 301.261.8629
Laurel 301.937.0404

Northern Virginia

Arlington 703.524.6700
Ashburn 703.729.7666
Centreville 703.322.2000
Fairfax 703.560.9444
Leesburg 703.779.4700

Northern Virginia Continued

Manassas 703.257.9444
Reston 703.860.2477
Springfield 703.644.1000
Sterling 703.450.2000


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