Terms of service

Last updated November 13, 2026. These terms cover Aerion HVAC Design Studio and Aerion Commercial ("Aerion"), sold by Epic Stuff, Things & Co. ("we"). By buying or using Aerion you agree to them.

Your license

A subscription gives you a non-exclusive, non-transferable license to install and use Aerion on one computer at a time for each seat you pay for, for as long as the subscription is active. You may move a license to another computer using Move to another computer in the app.

What you may not do

• Share, resell, rent or sublicense Aerion or a license key.
• Copy, decompile, reverse engineer or modify the software, or try to get around its licensing.
• Use Aerion to build a competing product.

Payments and renewals

Orders are processed by Lemon Squeezy, our reseller and merchant of record, under its own terms. Subscriptions renew automatically each month or year until you cancel. You can cancel any time from your order page; the license keeps working to the end of the paid period. Free trials end on the date shown at checkout and convert to a paid plan unless cancelled first. Refunds follow our refund policy.

Professional responsibility

Aerion is a design tool. You remain responsible for your designs, for checking results, and for meeting the codes, standards and requirements of the authority having jurisdiction. Code and climate data in Aerion is provided for convenience and should be confirmed with the building department.

Your projects

Your project files belong to you. They are stored on your computer, or in a shared business workspace if you use team seats.

Warranty and liability

Aerion is provided "as is", without warranties of any kind beyond those required by law. To the extent the law allows, we are not liable for indirect or consequential losses, and our total liability is limited to the amount you paid for Aerion in the twelve months before the claim.

Changes and ending

We may update Aerion and these terms; continued use after a change means you accept it. We may end a license that breaks these terms. These terms are governed by the laws of the State of Florida, USA.

Contact

Reply to your purchase or receipt email, or contact us from your order page.