M & M Controls

M & M Controls has served the commercial and industrial HVAC marketplace in Timonium, Maryland and throughout the mid-Atlantic region since 1987. This supplier specializes in environmental controls and systems for building automation, earning a 4.7-star rating across 26 verified reviews. The company operates multiple branches across Maryland, Virginia, Washington D.C., and southcentral Pennsylvania, providing controls and parts exclusively to trade professionals rather than residential homeowners.

What distinguishes M & M Controls from typical HVAC service companies is their specialized focus on Direct Digital Control (DDC) systems and building automation. They stock products from major manufacturers including Honeywell, Belimo, and Johnson Controls, offering the kind of technical expertise that other suppliers often lack. Reviewers consistently praise the staff's ability to solve tricky control issues, with one customer specifically noting the team handled a complex problem that required deep product knowledge.

Customer stories from reviewers highlight two technicians by name: Mike is singled out for resolving a particularly tricky controls issue, while Pat is described as leading a team that delivers top-notch service. Another reviewer mentions receiving free products while finding the staff helpful and friendly. The overwhelming majority of reviews award five stars, with criticism limited to a single account of difficulty sourcing a specific quote.