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How To Make Infrared Cooling Paint (Electricity Free Air Conditioning)

NightHawkInLight · 1.2M views · 2022-07-09 · 25:34

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Overview

NightHawkInLight shows how to make ultra-white radiative paint that cools surfaces below ambient temperature without electricity. He walks through the research papers and the household-materials process.

On Hacker News

HN points to it as a practical, well-researched DIY demonstration of passive radiative cooling.

Recommended by 4 HN people across 4 months · HN mentions 2022–2025

Topics

Materials scienceChemistryPower grid, heating & buildings
Search by tags
radiative coolingdiy chemistrypaintpassive cooling

What people said

teeray · 2023-07 · Strong recommendation

This YouTuber[0] does an excellent job recreating chemistry research from papers and improving on the techniques to be accomplished with household materials. He documents his failures and takes an empirical approach to arriving at his successes. I’m not sure of his background, but it’s certainly research that he’s doing. Watching his channel always reminds me that the scientific method does not have “first obtain an expensive degree” as one of its steps. [0] [VIDEO]

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jcims · 2025-12 · Recommendation

DIY radiative cooling paint from YouTuber NightHawkInLight - [VIDEO] It has pretty impressive performance. Tech Ingredients did one or two vids as well - [LINK] Was thinking of whipping up a batch for my rv.

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energ8 · 2025-06 · Recommendation

It's a thing in from thousands of years ago [LINK] and today [LINK] for PDRC there are a couple good videos about it from NightHawkInLight [VIDEO] , [LINK] and Tech Ingredients [LINK] [LINK]

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Sources

Video by NightHawkInLight, played through YouTube.

Data and selection notes

HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.

HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.

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