Terms of Service

Acceptance of Terms

By accessing and using SEER Calculator ("the Service," "the Website," or "the Calculator"), you accept and agree to be bound by these Terms of Service. If you do not agree to these terms, please do not use the Service.

These terms apply to all visitors, users, and others who access or use the Service. Your continued use of SEER Calculator following the posting of any changes to these terms constitutes acceptance of those changes.

Description of Service

SEER Calculator provides free online tools for estimating air conditioning energy consumption, comparing efficiency ratings, and calculating potential savings when upgrading HVAC equipment. The Service includes:

  • Savings Calculator: Estimates annual energy and cost savings when upgrading from one SEER rating to another
  • SEER Comparison: Compares energy consumption between two units with different SEER ratings
  • EER to SEER Converter: Converts between Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER) values
  • Cost Calculator: Estimates annual operating costs based on SEER rating, unit size, usage, and electricity rates

The Service also includes educational content, guides, and informational articles about HVAC efficiency and energy savings.

Disclaimer of Warranties

THE SERVICE IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

We do not warrant that:

  • The Service will meet your specific requirements or expectations
  • The Service will be uninterrupted, timely, secure, or error-free
  • The results obtained from using the Service will be accurate, reliable, or suitable for any particular purpose
  • Any errors in the Service will be corrected

You understand and agree that any material downloaded or otherwise obtained through the use of the Service is done at your own discretion and risk.

Limitation of Liability

TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, SEER CALCULATOR AND ITS OPERATORS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, DATA, USE, GOODWILL, OR OTHER INTANGIBLE LOSSES, RESULTING FROM:

  • Your access to, use of, or inability to access or use the Service
  • Any conduct or content of any third party on the Service
  • Any content obtained from the Service
  • Unauthorized access, use, or alteration of your transmissions or content
  • Decisions made based on calculations or information provided by the Service

This limitation applies whether the alleged liability is based on contract, tort, negligence, strict liability, or any other basis, even if we have been advised of the possibility of such damage.

Accuracy of Information

SEER Calculator provides estimates based on standard HVAC industry formulas and the values you enter. These calculations are intended for informational and educational purposes only.

Important limitations:

  • Results are estimates, not guarantees of actual energy consumption or savings
  • Actual energy usage depends on many factors we cannot account for, including installation quality, duct condition, home insulation, thermostat settings, maintenance, and local weather patterns
  • The calculator uses simplified formulas that may not reflect the complexity of real-world HVAC performance
  • Default values (such as electricity rates and cooling hours) are approximations and may not reflect your specific situation
  • SEER ratings represent laboratory-tested efficiency under standardized conditions, which may differ from actual operating conditions

You should not rely solely on calculator results when making purchasing decisions. We strongly recommend consulting with a licensed HVAC professional who can assess your specific needs, inspect your home, and provide personalized recommendations.

Calculator Accuracy

The results provided by SEER Calculator are estimates based on standard industry formulas derived from the U.S. Department of Energy (DOE) and Air-Conditioning, Heating, and Refrigeration Institute (AHRI). While these formulas are widely used across the HVAC industry, actual results may vary based on:

  • Installation quality: Improper installation can reduce actual system efficiency by 20% or more compared to rated performance.
  • Home characteristics: Insulation levels, window efficiency, air sealing, square footage, ceiling height, and home orientation all affect actual cooling loads.
  • Weather patterns: Year-to-year temperature variations, humidity levels, and extreme weather events affect actual cooling demand beyond what standard climate zone estimates capture.
  • Equipment condition: Dirty filters, low refrigerant levels, aging components, and deferred maintenance reduce system efficiency over time.
  • Ductwork: Leaky, poorly insulated, or improperly sized ductwork can significantly increase energy consumption regardless of SEER rating.

For the most accurate assessment of your specific situation, we recommend consulting with a licensed HVAC professional who can perform an on-site evaluation. For more details on our calculation methodology, see our About page.

Third-Party Resources

SEER Calculator provides links to external government and industry websites for informational purposes. These include resources from the U.S. Department of Energy (DOE), the Environmental Protection Agency (EPA) ENERGY STAR program, and other authoritative organizations.

These links are provided solely to help users access reliable information about HVAC efficiency standards, energy savings, and available incentives. SEER Calculator is not affiliated with, endorsed by, or sponsored by any of these organizations. The inclusion of any external link does not constitute an endorsement of that organization's products, services, or policies.

We make reasonable efforts to link to current and accurate resources, but we cannot guarantee the continued availability or accuracy of external content.

Data Sources

The formulas, default values, and reference data used in SEER Calculator are derived from the following sources:

Permitted Use

You may use SEER Calculator for personal, non-commercial purposes to estimate energy costs and compare AC efficiency ratings. You agree to use the Service only for lawful purposes and in accordance with these Terms.

You agree NOT to:

  • Use the Service in any way that violates applicable laws or regulations
  • Attempt to gain unauthorized access to any portion of the Service, other accounts, computer systems, or networks connected to the Service
  • Use any automated system, including "robots," "spiders," or "offline readers," to access the Service in a manner that sends more request messages to our servers than a human could reasonably produce in the same period
  • Introduce any viruses, trojan horses, worms, or other material that is malicious or technologically harmful
  • Attempt to interfere with the proper working of the Service
  • Copy, reproduce, or redistribute the calculator code without permission
  • Frame or embed the Service on other websites without prior written consent

Linking to SEER Calculator from your website is permitted and encouraged, provided such links do not falsely imply endorsement or affiliation.

Intellectual Property

The Service and its original content, features, and functionality are owned by SEER Calculator and are protected by copyright, trademark, and other intellectual property laws.

The SEER Calculator name, logo, and all related names, logos, product and service names, designs, and slogans are our property. You may not use such marks without our prior written permission.

The underlying formulas used in our calculators are based on publicly available HVAC industry standards established by organizations such as the U.S. Department of Energy. Our specific implementation, design, code, and presentation of these calculations are proprietary.

Educational content and guides on this website are original works. Brief quotations with attribution and a link back to the source are permitted for commentary, criticism, or educational purposes.

External Links

The Service may contain links to third-party websites or services that are not owned or controlled by SEER Calculator. These links are provided for convenience and informational purposes only.

We have no control over, and assume no responsibility for, the content, privacy policies, or practices of any third-party websites or services. We do not warrant the offerings of any of these entities or their websites.

You acknowledge and agree that SEER Calculator shall not be responsible or liable, directly or indirectly, for any damage or loss caused or alleged to be caused by or in connection with use of or reliance on any content, goods, or services available on or through any such third-party websites or services.

We strongly advise you to read the terms and conditions and privacy policies of any third-party websites or services that you visit.

Modifications to Service and Terms

We reserve the right to modify, suspend, or discontinue the Service (or any part thereof) at any time, with or without notice. We shall not be liable to you or any third party for any modification, suspension, or discontinuance of the Service.

We may revise these Terms of Service from time to time. The most current version will always be posted on this page with an updated "Last Updated" date. By continuing to access or use the Service after any revisions become effective, you agree to be bound by the revised terms.

If we make material changes to these terms, we will make reasonable efforts to provide notice, such as by posting a notice on the website. However, it is your responsibility to review these Terms periodically for changes.

Termination

We may terminate or suspend your access to the Service immediately, without prior notice or liability, for any reason whatsoever, including without limitation if you breach these Terms of Service.

Upon termination, your right to use the Service will cease immediately. All provisions of these Terms which by their nature should survive termination shall survive, including ownership provisions, warranty disclaimers, indemnity, and limitations of liability.

Severability

If any provision of these Terms is held to be invalid, illegal, or unenforceable by a court of competent jurisdiction, such invalidity, illegality, or unenforceability shall not affect any other provision of these Terms. The remaining provisions shall continue in full force and effect, and the invalid or unenforceable provision shall be modified to the minimum extent necessary to make it valid and enforceable while preserving its original intent.

Governing Law

These Terms shall be governed by and construed in accordance with the laws of the State of Delaware, United States, without regard to its conflict of law provisions. Any legal action or proceeding arising under these Terms shall be brought exclusively in the federal or state courts located in Delaware, and the parties irrevocably consent to the personal jurisdiction and venue therein.

If you are accessing the Service from outside the United States, you do so on your own initiative and are responsible for compliance with local laws to the extent they are applicable.

Entire Agreement

These Terms of Service, together with our Privacy Policy, constitute the entire agreement between you and SEER Calculator regarding your use of the Service and supersede all prior and contemporaneous agreements, proposals, or representations, written or oral, concerning the subject matter.

Contact Us

If you have any questions about these Terms of Service, please contact us at:

info@seercalculator.org

You may also reach us through our contact page.

For more information about how the calculator works, visit our About page. To understand how we protect your data, see our Privacy Policy. To use the calculator, return to the SEER Calculator homepage.

Last Updated: January 2026