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Approved

One Hour Heating & Air

Central A/C Installation, Central A/C Service or Repair, Furnace / Forced Air Heating System Install or Replace,

About us

Serving Mount Airy & Surrounding Areas Since 1949 One Hour Air Conditioning & Heating® of Mount Airy is proud of its long history serving the Mount Airy community. Our business began in 1949 as a furnace and air duct company. In the 1950s, we began building custom homes and commercial buildings. However, we devoted our attention to HVAC work full-time in 1993. Since then, we focused on making the residents of Mount Airy, Frederick, Gaithersburg, and surrounding areas in Maryland comfortable in their homes.

Business highlights

Emergency services offered
77 years of experience

Memberships & Affiliations

Better Business Bureau

Amenities

Emergency Services

Yes

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
5.05 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
100%
4
0%
3
0%
2
0%
1
0%
Showing 1-5 of 5 reviews
Jack P.
Jun 2026
5.0
Google Review
Mr Gilmer was very polite and patiently explained the issues with our air conditioning unit. He provided us with options and did not pressure us into making immediate decisions that could cost thousands of dollars.

Jon L.
Jun 2026
5.0
Google Review
The techs were early and quick. They broke down everything that needed to be monitored for future references

Joshua G.
Jun 2026
5.0
Google Review
Mr. Gilmer went above and beyond during the service of our AC unit. He took his time and answered all questions. Simply put he was terrific!

Kathleen H.
Jun 2026
5.0
Google Review
Ivery was friendly, communicative, and thorough. He explained what he was doing and what needed to be done to keep our air conditioner running smoothly through the summer.

Ken U.
Jun 2026
5.0
Google Review
Mr Gilmer was working good in my system

Licensing

Insured

Licensed*

Trade License Number

19683

Trade License Locale

MD

Trade License Expiration

08/08/2026

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

One Hour Heating & Air is currently rated 5.0 overall out of 5.

Monday: 8:00 AM - 3:00 PM Tuesday: 8:00 AM - 3:00 PM Wednesday: 8:00 AM - 3:00 PM Thursday: 8:00 AM - 3:00 PM Friday: 8:00 AM - 3:00 PM Saturday: Closed Sunday: Closed

One Hour Heating & Air accepts the following forms of payment: CreditCard

Yes, One Hour Heating & Air offers free project estimates.

No, One Hour Heating & Air does not offer eco-friendly accreditations.

Yes, One Hour Heating & Air offers emergency services.

No, One Hour Heating & Air does not offer warranties.