Gaithersburg, MD Furnace Replacement · #2 of 4 · 72+ yrs
Financing and free estimates are available, per B&B's website. Emergency and same-day service is advertised with a one-hour response priority. B&B reports over seven decades serving the DMV since the 1950s. B&B lists certified dealer relationships with York, Carrier, Lennox, and Trane. Gaithersburg homeowners face cold winters and gas-heating needs that B&B says it routinely handles with local permit support.
B&B performs furnace replacement and full HVAC installation in Gaithersburg and the DMV area. Years in business: 70+ years serving Maryland and Virginia. Certification note: lists certified dealer relationships with York, Carrier, Lennox, and Trane. Availability signals: advertises same-day service and a one-hour emergency response window.
Above the Gaithersburg, MD Furnace Replacement average of 75/100. Ranks #2 of 4 listed Furnace Replacement providers in Gaithersburg, MD.
Composite of public-record signals (BBB, license records), customer review signals (Google, Yelp), and editorial assessment of provider profile. See full methodology →
| Signal | B&B Air Conditioning … | Gaithersburg avg | Delta |
|---|---|---|---|
| Vouched Score | 79/100 | 75/100 | +4 vs avg |
| Google rating | 4.9★ | 4.9★ | matches city average |
| Review volume | 340+ | 2,245+ | -1907 vs avg |
| Years in business | 72+ | 31+ | +41 vs avg |
| Provider | Vouched | Years | |
|---|---|---|---|
B&B Air Conditioning & Heating Service (this company) |
79/100 | 4.9★ (340+) | 72+ |
| 63/100 | 4.8★ (690+) | 45+ | |
| 72/100 | 4.9★ (175+) | 16+ | |
GAC Services ⭐ Best for High-Efficiency (95%+ AFUE) Upgrades · ⭐ Best for Gas Furnace Replacement |
89/100 | 4.9★ (7,725+) | 56+ |
Profile last updated July 21, 2026.
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