Commercial Service & Maintenance

On a packaged rooftop: filters, belts and sheaves, bearings, condenser and evaporator coil condition, condensate pan and trap, economizer damper and actuator travel, electrical connections and contactor condition, refrigerant readings against design, gas train and combustion on the heating side, and the control sequence doing what it is supposed to do. On hydronic plant it moves to pumps, strainers, water treatment, tower fill and drift, and valve travel. The list is built per equipment class, then per unit.

Twice a year is the floor for packaged equipment — once before cooling season, once before heating. Filters usually need attention more often than that, and buildings next to construction or heavy traffic need them more often again. Kitchen exhaust, make-up air and anything running continuously moves to quarterly. Chillers and towers follow their own calendar around start-up and lay-up.

Two practical things. First, a technician arriving on a covered building already has the asset list, the zone map and the last readings, so the diagnostic half of the call is largely done before he is on the roof. Second, the failures that get caught on a planned visit are cheap ones — a belt, an actuator, a contactor — while the same faults left alone become compressors and boards. Break-fix only looks cheaper until the second summer.

We start at the space, not the roof. Is the complaint the whole floor or one exposure? Is it all day or after two in the afternoon when the west glass loads up? Then the zone: thermostat placement and calibration, VAV box damper and reheat valve position, supply air temperature at the diffuser. Only then the unit. Working in that order stops the classic outcome where a healthy rooftop gets a new board and the corner office is still warm.

Yes. Packaged rooftops, split systems, VRF, air handlers, fan coils, unit heaters, make-up air and gas-fired equipment from every major manufacturer. On proprietary controls we will tell you honestly where a factory technician is the faster route, rather than spending your money learning somebody else’s platform on site.

Yes, and for anything inside occupied space it usually should. Roof and mechanical room work often runs fine during the day. Filter changes above a trading floor, coil cleaning near a server room, or anything requiring a lift in a lobby goes into an evening or weekend window agreed with building management, with the certificate of insurance and access list sorted in advance.

Yes. Every visit produces a record against the tagged asset: what was checked, the readings, what was replaced and what was recommended. Refrigerant added or recovered is logged by machine. That file is what turns a replacement recommendation into something an owner will approve instead of question.

Usually yes, but the goal changes. On aged equipment maintenance stops being about efficiency and starts being about warning — keeping the machine running predictably until the replacement is budgeted and scheduled, rather than letting it quit in July with a long lead time on the part that killed it. That is also the point at which the replacement conversation should start.