Rooftop unit over a bar and kitchen. No complaint yet. This was a maintenance visit, which is the kind we like.

The filters on a packaged rooftop unit live behind an access panel on the roof. Nobody in the building walks past them. A filter in a hallway return grille gets changed because someone notices it’s grey. These don’t.

What a loaded filter does: it cuts airflow across the evaporator coil. Less air over the coil means the coil runs colder, and eventually it ices. The blower works harder, the compressor runs longer, the dining room gets a few degrees warmer on the hottest afternoon of the year. Then the call comes in as AC not cooling, and a twelve-dollar filter has become a service call and a thaw-out.

This unit takes 20x20x2 pleated filters. We swapped the set, made sure each one seats in the rack properly (a filter that isn’t seated lets air around it, which is worse than a dirty one), and looked over the coil and the drain while the panel was off.

For a kitchen with a grease hood nearby, quarterly is about right. Twice a year is the minimum. Put it on the calendar with the hood cleaning.

We do rooftop unit maintenance on a schedule, so the filters are one less thing you have to remember.

If it heats or cools, we handle it. 📞 718-802-1700