Wash the outside AC unit's coil fins clean with a garden hose, the public library serving Marfa.

Pollen, dust, and fine grit have packed into the millimetre-wide gaps between this library's outdoor unit's coil fins, the finest-scale obstruction in this ladder, finer than the feet of crowding and the inches of matted debris already cleared, and nobody has ever washed them out.

Where

the public library serving Marfa, Marfa, TX 79843 (Presidio County; best-estimate location near the town center, branch name and hours to be confirmed with library staff, exact address not confirmed) · Open the map

Pay

$35 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. You see which before you claim, never after.

Proof

before/after coil-fin photos + hose-only confirmation + GPS

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

Level

intermediate

Open until

2026-09-13

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. Power off the outdoor unit at its own outdoor disconnect switch before anything touches the cabinet, the base, or the coil, and confirm the disconnect is off before starting.
2. Remove the top grille or fan shroud only if it lifts off by hand without tools; if it is fastened down, wash through the fins as installed rather than forcing anything open.
3. Confirm with library staff how the unit's coil has been serviced before, then using a garden hose on a gentle spray setting, wash the fins from the inside out, working from the center of the coil outward so loosened dirt is pushed clear of the unit rather than deeper in. Never use a pressure washer or any high-pressure nozzle; the pressure folds the thin fins flat and makes the airflow blockage permanent.
4. Let the coil drip dry, replace any grille that was removed, and photograph the fins before and after.

What counts as done

• Confirmation of library staff permission and coordination on site
• Confirmation that the outdoor disconnect was switched off before the coil was touched
• Before photo of the packed, dust-caked coil fins
• After photo of the washed fins
• Confirmation that only a garden hose on a gentle setting was used, never a pressure washer or high-pressure nozzle

Proof is measured against these, not judged by taste.

The standard this serves

Energy Efficiency Audit. Energy efficiency work begins with the walkthrough audit, the kind the ASHRAE standard describes: a trained eye moving through a building, reading the bills, the walls, the lights, and the equipment, and coming out with the short list of fixes worth doing first. Mastery looks like an auditor who can feel where a building is bleeding money within the hour, and prove it on paper. That instinct is trained by repetition on real buildings. This packet is one repetition: one system observed, one reading taken, one finding recorded the way the standard asks.