The original and patented cooling hat insert — U.S. Patent No. 11,266,193
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Stay Cool While Fixing AC
Ironic, Right?

Chiller Body cooling hat inserts for HVAC technicians working in attics, rooftops, and hot mechanical rooms.

How It Works

1

Freeze

Freeze your Chiller Body inserts overnight or for 2-4 hours before your shift or game.

2

Insert

Slide the frozen insert into your hat, helmet, or headwear for immediate relief.

3

Stay Cool

Enjoy 20-30 minutes of intense cooling. Swap with a backup for all-day protection.

Frequently Asked Questions

Does it work in attic/crawlspace heat (130°F+)?

Yes, and this is exactly the environment it was designed for. The insert provides direct cooling through thermal contact with your scalp regardless of ambient temperature. In extreme heat like attics, the insert will warm faster — expect 10-15 minutes of active cooling — so carrying multiple inserts is essential for attic work.

How does it fit with a hard hat or bump cap?

The insert sits flat against the crown of your head and fits comfortably under hard hats, bump caps, and standard baseball caps. It does not interfere with the suspension system of hard hats or compromise their safety rating.

Can the insert handle confined space environments?

Yes. The insert is a passive cooling product with no electronics, batteries, or moving parts. It produces no vapors or emissions, making it safe for confined space work where air quality and equipment restrictions are a concern.

How quickly can I swap inserts between service calls?

Swapping takes about 5 seconds — just pull the warm insert from your hat and slide a fresh frozen one in. Keep a small cooler in your service van with 3-4 spare inserts so you can rotate them throughout the day without any downtime.

Stay Focused.
Stay Cool.

Join thousands of professionals and athletes who trust Chiller Body for relief.

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U.S. Patent No. 11,266,193