Last updated: January 22, 2026
By accessing or using the HVAC Load Calculator website, you agree to be bound by these Terms of Service. If you disagree with any part of the terms, you may not access the Service.
Important: This tool is provided for educational and estimation purposes only. It is NOT a substitute for a professional load calculation performed by a licensed HVAC contractor pursuant to ACCA Manual J protocols.
We make no warranties, expressed or implied, regarding the accuracy, reliability, or completeness of the calculations provided. We shall not be held liable for any damages, equipment failures, or code violations resulting from the use of this tool.
You agree to use the Service only for lawful purposes. You are prohibited from violating or attempting to violate the security of the Website, including accessing data not intended for you.
The Service and its original content, features, and functionality (including the calculation logic) are and will remain the exclusive property of HVACCalc. Our trademarks may not be used in connection with any product or service without the prior written consent of HVACCalc.
We may terminate or suspend your access immediately, without prior notice or liability, for any reason whatsoever, including without limitation if you breach the Terms.
We reserve the right, at our sole discretion, to modify or replace these Terms at any time. By continuing to access or use our Service after those revisions become effective, you agree to be bound by the revised terms.