Our company was established in 1949 building custom homes and remodeling in the Montgomery County area. In 2000 we re-directed the company to specialize in residential air conditioning and heating service and replacement. Our team continues to strive to become the most customer oriented service company in the county. We to do this through on-going training in communication skills and technical procedures.
Keeping abreast of new product knowledge in the HVAC industry so we can provide the homeowner with options to keep their homes comfort in severe weather. Still family owned and operated; we pride ourselves on providing excellent service for you-our customer.
GILLIAN COLLINS – OWNER – VICE PRESIDENT
Raised in Gaithersburg and received a degree in Computer Science/accounting from Montgomery College. Gillian worked at HHS/NIDA and Montgomery College as a computer systems analyst for 15 years. She joined her husband, Larry, in the business in 1989. Gillian’s passion, other than her family, is plein air painting. She has won numerous awards and sells her work at local galleries and art shows.
LARRY COLLINS – OWNER – PRESIDENT
Raised in Gaithersburg and received a degree in Microbiology from University of Maryland. Took over his father’s building/remodeling business in 1979 and expanded the company to service residential plumbing and water treatment. Larry holds a Master HVAC, Master Plumbing and Journeyman Electrical licenses. He enjoys spending his spare time target shooting and go-carting with his 3 children and grandsons. To relax his takes walks with his wife, Gillian, of 34 years.
TERRY FISHER – OWNER – GENERAL MANAGER
Central and Western Maryland: 301.515.1001
One Hour Air Conditioning & Heating is the residential expert in Central and Western Maryland. We offer top-notch, craftsman installation, warranties, and One Hour Air exclusive guarantees. We also specialize in all aspects of Indoor Air Quality including electrostatic filters, UV lights, Humidifiers, and more. Our highly trained service technicians provide an unparalleled service with straightforward pricing. We are available 24 hours a day, 7 days a week, 365 days a year including holidays! Family owned and operated. Family owned and operated. Up to 60 Months No Interest Financing on HVAC Install!!!
- Air Conditioners
- Air Handlers
- Heat Pumps
- Indoor Air Quality
- Maintenance Agreements
- Duct Cleaning
- Tankless Water Heater
- Cabin John
- Chevy Chase
- Mount AIry
- Silver Spring
- Carroll, Frederick, Howard, Montgomery, and Washington Counties
Your home’s heating and air conditioning systems keep you comfortable but you really only notice them when something goes wrong.
At One Hour Heating & Air Conditioning®, we know that every home owner and every home itself is different. As a service partner of Direct Energy®, we are proud to offer the Home ComfortCollection™, protection plans designed to fit your home’s needs.
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