The final walkthrough on a new Port St. Lucie home usually focuses on paint touch-ups, cracked tiles, cabinet adjustments, appliances, doors, windows, and obvious cosmetic items. AC vents rarely get the same attention. That is a miss, because builder punch-list work can leave fine dust in and around vents right before closing.
Punch-list dust is not ordinary household dust. It often comes from small repairs that happen after the main construction cleanup: drywall patches, texture repair, trim sanding, tile replacement, cabinet adjustments, attic access, and paint prep. These jobs may look minor, but they can create very fine particles. If the AC is running, nearby returns and supplies can collect that dust before the buyer receives the keys.
For a new home, the right question is not whether every duct must be cleaned automatically. The better question is whether the visible parts of the system show enough dust or debris to justify cleaning before furniture, rugs, and boxes arrive. Air Duct Cleaning PSL helps local buyers and homeowners make that call with a practical inspection and cleaning approach.
Why the punch-list phase is dusty
Late-stage construction is full of small corrections. A drywall seam gets skimmed. A door is planed. A cabinet filler is trimmed. A tile edge is cut. A ceiling spot is sanded and repainted. Each task is short, but the dust can be light enough to drift. In Florida, where crews often keep the house cooled while finishing work, the HVAC system can be part of that air movement.
The return side deserves special attention. Returns pull air from the home back toward the air handler. If a return is near a dusty repair, it can collect particles quickly. Supply vents can also gather dust when covers are off, registers are uncovered, or debris falls into floor and ceiling openings during work.
What to check during the walkthrough
You do not need special equipment for a basic vent check. You need a flashlight and a few minutes in each main area. Start with the return grille. Look at the face of the grille, the corners, the filter rack, and the visible area behind the cover. Heavy gray dust, white powder, loose drywall pieces, or a filter that already looks loaded should be noted.
Then check supply vents. Look for dust on the grille blades, staining around the edges, and loose debris just inside the boot. In bedrooms and living areas, pay attention to vents near recent drywall or paint touch-ups. In kitchens and baths, look around areas where tile or cabinet work may have happened late in the build.
If a vent cover was painted in place, note that too. Paint can partially bridge the openings or seal the cover to the ceiling. That may not be a duct-cleaning issue by itself, but it can reduce airflow and make future cleaning harder. Better to catch it before closing than after the room never cools evenly.
Useful notes for the builder
If you see dust or debris, take clear photos. Photograph the room, the vent, and a close view of the issue. Keep the language simple: visible drywall dust inside supply boot, dusty return grille, filter loaded before occupancy, vent cover painted over, debris in register. Builders respond better to specific observations than to broad complaints about air quality.
Ask whether the affected area can be cleaned before closing and whether the HVAC filter can be replaced after all punch-list work is done. If the builder ran the AC during drywall sanding or tile cutting, ask whether the returns were protected at that time. The answer matters less than the evidence in front of you, but it helps establish context.
When professional duct cleaning makes sense
Professional cleaning is worth considering when dust is visible in multiple vents, when the return area is heavily coated, when filters load quickly, or when fine powder keeps appearing after surface cleaning. It also makes sense if the home had late drywall, tile, cabinet, or trim repairs near open vents.
A professional visit should not turn into a dramatic sales lecture. New homes often have straightforward problems: loose dust, debris in the boots, dirty covers, and a filter that needs replacement. The work should focus on what is visible and accessible, then leave the system cleaner for move-in.
Air Duct Cleaning PSL serves Port St. Lucie and the Treasure Coast. The company is family-owned, licensed and insured, and has a 5.0 rating with 47 Google reviews. Duct cleaning starts at a $245 minimum. If you also want the dryer vent checked, dryer vent cleaning is $125 for a single-story home and $175 for a two-story home.
Do this before the furniture arrives
Timing is the advantage. Before closing, you still have leverage with the builder. Before move-in, you still have open rooms and easy access. After move-in, every vent check means working around beds, dressers, boxes, and a schedule that is already full.
If the home is empty and dusty work is complete, that is the cleanest window for duct cleaning if it is needed. If punch-list work is still happening, wait until the dusty items are finished. Cleaning before another sanding pass is paying to do the same job twice. Efficient only for the invoice.
A simple closing-week checklist
- Inspect the return grille and filter before the final walkthrough ends.
- Check supply vents in rooms with recent drywall, paint, tile, or cabinet work.
- Photograph visible dust, debris, staining, or painted-over grille openings.
- Ask for the filter to be replaced after dusty punch-list work is done.
- Schedule duct cleaning after dusty work is complete and before move-in, if needed.
Checking vents before closing is a small step, but it can prevent a frustrating first month in a brand-new home. If you see dust and want a local second look, call Air Duct Cleaning PSL at (772) 237-0018. Hours are Monday through Saturday, 8AM to 5PM, and Sunday is closed.