Last updated: July 26, 2026

Welcome to HVAC Calculators (https://hvaccalculators.net). By using this website you agree to these Terms of Use. If you do not agree, please do not use the site.

What this site provides

HVAC Calculators offers free BTU, mini-split, and room AC sizing calculators plus HVAC education guides for homes, RVs, garages, and cottages. Content is for general information and estimating only.

Not professional advice

Nothing on this site is professional engineering, contracting, financial, medical, or legal advice. Calculators produce estimates based on formulas and the inputs you provide. Always verify materials, measurements, and safety requirements for your project. See our Disclaimer.

Acceptable use

You agree not to misuse the site, including attempting to disrupt servers, scrape content at abusive rates, or misrepresent our estimates as certified professional calculations. You may not copy large portions of our guides for republication without permission.

Intellectual property

Site design, original writing, and compilation of tools and guides are owned by HVAC Calculators or its licensors. Stock photos are credited where shown and remain the property of their photographers / providers. You may link to our pages; you may not frame the site or present our content as your own.

Advertising and affiliates

We may display advertising (including Google AdSense when approved) and affiliate links. Advertising does not change our obligation to keep calculator methods transparent. Affiliate relationships, if any, are disclosed where required.

No warranties

The site is provided “as is.” We do not warrant uninterrupted availability, error-free calculations, or that content meets your specific project needs. Estimates can be wrong if inputs, product labels, or site conditions differ.

Limitation of liability

To the fullest extent permitted by law, HVAC Calculators and its operators are not liable for damages arising from use of the site, including purchasing or construction decisions based on calculator outputs.

Changes

We may update these terms. The “Last updated” date will change when we do. Continued use after changes means you accept the revised terms.

Contact

Questions about these terms:[email protected]or ourContactpage.