Build and place a box-fan air filter, a resident's own home living room, Iraan, TX.

No filtration exists in this living room at all, and no purchased purifier is in the budget -- a box fan and stacked furnace filters, taped into a cube per the published design, moves and cleans room air for a fraction of the cost, built entirely from parts sold at any hardware or box store.

Where

a resident's own home living room, Iraan, TX 79744 (Pecos County); best-estimate location near the town center, exact address not confirmed · Open the map

Pay

$85 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash — recorded, and readable any time at vealth.net/labor/credit/(your wallet). You see which before you claim, never after.

Proof

baseline PM2.5 reading + parts-staged photo + finished-box photo + post-run PM2.5 reading + GPS

This is exactly what gets it approved. Nothing settles without it.

Level

entry

Open until

2026-09-10

Posted by

0x034F…6c89

The creator wallet. Its signature is what approves proof and settles the wage.

How this work is done

A documented method, so this packet comes out the same whoever does it.

Steps

1. 1. Gather a standard 20-inch box fan and four to five 20x20-inch (or matched-size) MERV-13 furnace filters, checking each filter's printed airflow-direction arrow.
2. 2. Take a baseline PM2.5 reading with a handheld particulate meter at the room's center point before building or running the unit.
3. 3. Stand the filters on their edges in a cube with the fan on top, every airflow arrow pointing into the cube toward the fan, and tape every seam airtight with wide tape, including the fan-to-filter seam.
4. 4. Set the finished box on a stable, unobstructed surface, plug the fan into an existing grounded outlet, and run it at its stated speed for the same interval used for the baseline reading.
5. 5. Take a second PM2.5 reading at the same point and record the reduction, and photograph the finished, taped, running box.

What counts as done

• Baseline PM2.5 reading before the box is built or running
• Photo of the filters and fan staged with airflow-direction arrows visible before assembly
• Photo of the finished, fully-taped box with no visible gaps at any seam
• Second PM2.5 reading after the stated run interval showing a measured reduction

Proof is measured against these, not judged by taste.

The standard this serves

Indoor Air Quality. Indoor air quality is the health of the air where people actually live, and most of us are indoors nine hours in ten. The standards give it numbers: carbon dioxide that tells whether fresh air is reaching a room, fine dust, fumes from finishes, moisture that invites mold. Mastery looks like reading a room's air the way a doctor reads a pulse, and knowing which fix matters first. It is learned meter in hand. This packet is one room measured honestly, and one measured room is worth a hundred guesses.