3 field-tested build protocols — no skills, no power grid, no expensive AC required.
Start this afternoon. Feel the difference tonight.
Your first working build — done this weekend.
Every protocol, every build, every fix — one bundle.
Advanced builds that outperform store-bought units.
Every protocol in this system was built, tested, and measured in real heat — not a lab. If it didn't drop the ambient temperature by a documented number, it didn't make the cut.
All 17 chapters of the complete system
Yoder Builds
I'm not an engineer. I'm a builder who got tired of sweating through summers in spaces where a $1,200 portable AC wasn't an option — first in a van, later in a rental with a landlord who treated a window unit like a felony. I started documenting what actually worked: not YouTube hacks, but builds I ran thermometer tests on, repeated across different climates, and refined until the numbers stopped lying. The protocols in this system were tested in real heat in Arizona, Georgia, and the Texas hill country — in vehicles, tents, and rooms with no insulation worth mentioning. I wrote these books because the information existed in scattered forums, physics textbooks, and HVAC manuals nobody was going to read. I just put it in order, cut the parts that didn't hold up in the field, and made it something you could actually build this weekend.
The honest reason I wrote three books instead of one is that cooling a space is a layered problem. Volume I solves the immediate emergency — you need something working by Friday, you have $50 or less, and you've never built anything like this. That's a real and urgent situation and it deserved a complete answer. But after people built their first system, they came back with questions: why did it work better in the morning than the afternoon? Why did the same build perform differently in a tent than in a van? Those questions led to Volume II — the engineering layer, the measurement layer, the 'now I want to actually understand this' layer. Volume III ties it together with documented benchmarks and build templates that make the whole system reproducible and shareable. I assembled the bundle because these three books work as a complete system in a way none of them do alone. If you're in the middle of a heat emergency right now, Volume I is enough to start. But if you want the whole picture, the bundle is the straightforward call.
Try every protocol. Build the $15 system, test the fan conversion, run the benchmarks. If you don't feel a measurable difference in your space within 7 days, email us and you get a full refund — no forms, no interrogation, no waiting. You keep the books either way.
Every protocol tested. Every number real. Every material available at your hardware store today.
GET THE FULL SYSTEM $67 →For $27 you get 5 tested build protocols and a working cooling system by this weekend. No skills required. No power grid needed. Measurable results or full refund.
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