The Future of Portable Restroom Ventilation is Here!
Breathe New Life Into Your Outdoor Spaces
Poor ventilation is a common problem in outdoor structures leading to heat, humidity, and stubborn odors. Spartan Sol’s "Johnny Hat" is a universal solar-powered ventilation fan designed to solve exactly that.
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Whether you're outfitting a shed, greenhouse, chicken coop, hunting blind, or even a portable restroom, the Johnny Hat improves airflow, reduces moisture, and helps protect what matters—plants, animals, tools, or people. It installs easily and runs on sunlight alone—no wiring, no batteries, no hassle.
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Built tough for year-round use, this fan was originally designed for the demanding conditions of job sites and outdoor events, making it a reliable upgrade for any enclosed space that needs better air.
From backyard sheds to portapotties—if it has a roof, it can breathe easier with the Johnny Hat.
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Johnny Cap Features
Solar Power
Air Flow
Easy Install
Same porta-potty, totally different experience! What’s the difference between a John with a Johnny hat and one without? Watch and see.
Reviews
Linda T.
The Johnny Hat is exactly what we needed for our remote campground. It works great during the day, and the difference in odor control is amazing!
Marcus D.
I was skeptical at first, but this fan works incredibly well as long as there’s sunlight. It’s durable and works great for our construction site porta-potties.
Emily R.
I’ve been using it for months, and it’s been a game-changer! Keeps the air fresh and moving without needing any electricity—perfect for outdoor events.
Blog Posts
How to Cool a Shed Without Electricity: 5 Solar Solutions for a Comfortable Space
If you’ve ever stepped into a shed in the middle of summer, you know how stifling it can get. Without insulation, airflow, or power, sheds often trap heat—creating an environment that's unbearable and even damaging to tools, supplies, or plants. But what if you could cool your shed without running electricity?​
Good news: with today’s solar technology, it’s easier and more affordable than ever.
The Best Solar Ventilation Option for Greenhouses: Why Airflow Matters
​A greenhouse is meant to be a nurturing space—one where plants thrive, seedlings flourish, and your garden grows year-round. But without proper ventilation, your greenhouse can quickly become a deathtrap of overheated, stagnant air. If you’ve ever opened the door to a wave of humid, musty heat, you know what we mean.
The solution? Solar-powered greenhouse ventilation.
How the Johnny Hat Keeps Your Portable Toilet Cool and Odor-Free
When summer hits, portable toilets—whether at a construction site, festival, campground, or outdoor event—can quickly become unbearable. The heat, the odor, and the lack of airflow combine to create an experience that no one wants to deal with. But what if you could drastically reduce those issues with one simple upgrade?
Meet the Johnny Hat—a solar-powered exhaust fan.
EVERY EVENT BENEFITS
Concerts, Festivals, Farmers Markets, Family Events, Block Parties, Job-Sites, Trail Heads, Carnivals, Fairs... the options are endless...
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