Popular Cities
24 companies listed · 7 in Timonium · 13 open 24/7 · 17 open weekends · all 24 rated 4.5+
Data verified October 18, 2026
The 24 companies listed for Timonium, MD work on furnaces, heat pumps and air conditioners. Each profile repeats what the company publishes about its hours, its license and the equipment it fits, alongside ratings and quotes drawn from public reviews.
Of the 24 companies we list here, 7 are in Timonium itself and 17 come from towns including Baltimore (6, 10 mi), Essex (4, 11 mi) and Dundalk (2, 14 mi). The companies on this page are rated from 4.5 to 5.0 across 5,175 reviews; 20 have 50 or more reviews. When customers rate these companies on specific qualities, they most often praise professionalism (90%), responsiveness (83%) and quality (82%). 13 are open around the clock; 17 are open on Saturdays and 13 on Sundays. The services the companies on this page list most often on their websites are AC repair (2), air conditioning (2), furnace repair (2), heating (2) and indoor air quality (2). 9 show a license on their websites; 2 list staff certifications (EPA and NATE) and 7 have a BBB rating of A or A+. 17 have ten or more years of experience, the longest 89 years. 14 offer emergency call-outs; 15 offer financing or payment plans; 10 give free estimates; 7 are family- or locally-owned and 12 list coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Saturday or Sunday hours show up for 17 of the 24 companies here. Saturdays fill with the calls that came in on Friday, so ask whether you are getting a repair slot or a sales visit. Sunday work is usually treated as an emergency call.
