B&B Air Conditioning and Heating Service Company, Inc.

301-881-2700 Rockville*301-589-3440 Silver Spring*301-330-0040 Gaithersburg*240-243-1150 Germantown*301-662-0611 Frederick*410-848-4700 Carroll County*410-266-7900 Annapolis*410-672-1551 Odenton*301-261-8629 Bowie-Upper Marlboro*410-535-4327 Calvert County*410-820-4684 Kent Island*410-997-2700 Columbia*410-876-2100 Baltimore*410-583-9444 Towson*410-592-9118 Harford County*301-937-0404 Laurel*703-860-2477 Reston*703-524-6700 Great Falls.McLean*703-450-2000 Sterling.Herndon*703-560-9444 Fairfax.Arlington*703-644-1000 Springfield.Alexandria*703-322-2000 Chantilly.Centreville

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Providing First-Rate Service For Over 50 Years...


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B&B has been providing service, maintenance, installation and repair of all brands of central air conditioners, heat pumps, furnaces, boilers, humidifiers, air cleaners and other add-on optional comfort accessories since 1957.


Our elite service staff is perhaps the most highly trained and qualified group of technicians in the industry. Unlike many other companies, our service technicians our trained in our own training institutes. All service technicians, installation personnel and engineers are factory trained, and have completed or are in the process of completing - additional training at B&B's own Institute of Advance Heat Pump Technology.



Free Estimates to Upgrade Your System to a More Energy Efficient Model!
All Brands Serviced
Oil and Gas Conversions
EPA Certified Technicians
Free Second Opinions
Certified Service Contracts(SAVINGS$$$)
Custom and Replacement Systems
High Efficiency Filters
Air Purifiers
Refrigerants Recovered to Protect the Environment!


COOLING: (Spring)
HEATING: (Fall)
  • Check refrigerant charge
  • Check air filters
  • Check indoor and outdoor coils
  • Check electrical connections
  • Check running voltage
  • Check condensate drain
  • Inspect contactor points
  • Inspect capacitors
  • Check amperages of motors and compressor
  • Check temperature split across
    evaporator coil
  • Check refrigerant charge
  • Check air filters, clean if necessary
  • Check coils, clean if necessary
  • Check electrical connections
  • Check voltage and amperage of motors and compressor
  • Lubricate fan motors
  • Check fan blades for tightness
  • Check amp draw of electric heaters
  • Check 1st stage heating
  • Check 1st and 2nd stage heating
  • Check low temperature cut off
  • Check defrost initiation and termination
  • NOTE: If any above services are performed there is a charge for materials. No charge for labor if you have a service contract. Non-contract customers will be charged labor.


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