Custom AC Cover & Drywall Repair · Manhattan, NY

A Custom AC Cover Box and Flood-Damaged Wall Repair in a NYC High-Rise

A flooded high-rise apartment in Kips Bay, Manhattan, had its floor replaced, but the wall was still damaged and the AC unit under the window was bare. Repair Asap built a custom cover box in the workshop, installed it, patched the drywall and repainted — two days on site.

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A Custom AC Cover Box and Flood-Damaged Wall Repair in a NYC High-Rise
Kips Bay, East Side of Manhattan, NY
ClientResidential client
LocationKips Bay, Manhattan
Property typeResidential home
CompletedAugust 2026
Starting condition

After the flood: a damaged wall and a bare AC unit

The flood had already forced a new floor. What was left behind was a water-damaged section of wall near the window, drywall full of holes, and the AC unit itself — an exposed metal cabinet with loose wires and a plywood board sitting on top of it as a makeshift sill.

The homeowner asked for two things: repair the wall so it looks like nothing happened, and build a custom cover for the unit so it looks like part of the apartment instead of a piece of equipment.

Scope of work

  • First visit: measure the existing under-window AC (fan-coil) unit and quote the job
  • Build a made-to-measure cover box in the workshop — a shop day, about 6–7 hours including buying the materials
  • Prime and paint the box in the shop, then deliver it to the apartment
  • Day 1 on site: install the box and patch the flood-damaged wall section and the holes in the drywall
  • Day 2 on site: finish-paint the box in place and repaint the repaired walls
  • Keep the unit working: a vented top grille and an open bottom so air still moves through
Before and after

From a bare AC unit to a built-in cover box

Drag the handle to compare — the same corner under the window, before and after the custom box went in on day one.

The AC unit under the window, before and after

The same window with a custom white AC cover box installed on day one, patched wall beside it, NYC high-rise apartment
Exposed under-window AC unit with loose wires and a plywood sill after a flood, NYC high-rise apartment

Drag the slider: the same spot under the window. The bare metal unit became a made-to-measure white box with a vented top. This is day one — the box just installed and the wall freshly patched; the final coat of paint on the box and walls came on day two.

The work

Measured on site, built in the shop, installed in a day

The box was built to the measurements taken on the first visit, in the workshop rather than in the apartment. That was a shop day — about six to seven hours including buying the materials — and it meant the cutting and sanding happened off-site: no sawdust in a home that had just been put back together. The box was primed and painted in the shop and delivered ready to install.

Day one on site: the box was set under the window and fixed in place, and the flood-damaged section of wall and every hole in the drywall were patched and skimmed. The box has a vented grille on top and an open bottom, so the unit still pulls and pushes air the way it should.

Day two: the box got its finish coat in place, and the repaired walls were repainted so the patches blended into the wall. The apartment was left clean, with the unit hidden and the wall smooth.

Why it works

Built to measure, finished on site

A cover for an AC or fan-coil unit only looks right when it fits the unit exactly — flush with the wall, the sill and the floor, with nothing forced. That is why the first visit was for measuring and the quote only, and the box was built from those numbers in the workshop. Building off-site also keeps the noise and dust out of the apartment and lets the box be painted properly before it ever arrives.

Hiding the unit is only half the job; it still has to work. The top of the box carries a vented grille and the bottom is left open, so air moves through the cover the way it moved through the bare unit. And because the box was installed on the same visit as the drywall patching, the finish coat on day two brought the box and the repaired walls together into one clean, even result.

Related services

Need a wall repaired or an AC unit hidden?

This project connects to drywall repair, interior painting, and general home repairs for apartments across Manhattan and New York City.

FAQ

AC cover box & flood wall repair FAQ

Can you build a cover for an under-window AC or fan-coil unit?

Yes. The unit is measured on site first — that is also when the job is quoted — then a made-to-measure box is built in the workshop, primed and painted, and installed in the apartment. On this project the box has a vented grille on top and an open bottom so the unit keeps working normally.

Why was the box built in the workshop instead of in the apartment?

Cutting, sanding and priming happen off-site, so there is no sawdust or paint fumes in the home, and the box arrives ready to install. It also means the fit is decided by careful measurements rather than by cutting on the spot.

Do you repair walls after a flood or a leak?

Yes — once the wall is dry. On this job the floor had already been replaced, so the work was the rebuild: patching the water-damaged section and the holes in the drywall, skimming, priming and repainting so the repair disappears.

How long does a job like this take?

Here it was a first visit to measure and quote, then a shop day of about six to seven hours to build and paint the box (including buying the materials), then two days on site: installation and drywall patching on day one, painting the box and the walls on day two.

Water damage on a wall, or an AC unit you want covered?

Send a few photos of the wall or the unit and Repair ASAP can quote the repair, a made-to-measure cover box, or both.