Commercial HVAC in Manassas.

Manassas splits into two kinds of commercial building. Old Town has brick storefronts and restaurants that were never designed around a mechanical room, so equipment tends to hide wherever it fit: a split system in a back stockroom, a condenser on a low roof or in an alley. Out toward Route 28 and the airport, the industrial and flex buildings run bigger packaged rooftop units over warehouse space and offices.

The restaurants are where the cold side shows up. This summer a Manassas restaurant’s walk-in freezer stopped keeping temperature. The evaporator fans inside had fallen off their mounts, the coil had iced over, and the charge was low on a system old enough to predate today’s refrigerants. We wrote up the fans, the iced coil and the low charge as separate proposals, so the owner could see what was urgent and what could wait.

That job is typical for older kitchens. A fan that falls or seizes starves the coil of air, the coil ices, and the freezer then fights itself until it quits. Most of the damage is slow, so a coil and fan check on a schedule catches it long before a full walk-in of food is on the line.

Some Manassas buildings are mixed use, with offices or apartments above the shop below, and each tenant tends to be on a separate system. On a visit we map which unit serves which space first, so a call about one suite doesn’t turn into a search across the roof.