Terms of Service

1. Acceptance of Terms

By accessing and using Heat Loss Calculator (the "Platform"), you agree to comply with and be bound by these Terms of Service.

2. Educational & Estimation Scope

The calculations, formulas, and equipment sizing guidance provided on this website are for preliminary educational, design estimation, and reference purposes. While our algorithms implement recognized building physics standards (including BS EN 12831, ISO 6946, BS EN 442, and CIBSE Guide A), real-world building thermal dynamics depend on professional on-site surveys, airtightness testing, and specific product data.

3. Professional Verification Requirement

Users should always have final designs verified by a certified heating engineer, qualified HVAC contractor, or accredited energy assessor (such as an MCS certified contractor in the UK) prior to procuring heating plant, installing radiators, or completing commissioning documentation.

4. Calculation Assumptions & Inherent Limitations

All tools on this Platform operate under steady-state thermodynamic models (such as Fourier conductive transmission and constant volumetric air exchange). While these conform to standard sizing codes (including BS EN 12831, ISO 6946, and ACCA Manual J), users must understand that steady-state calculations do not model:

• Dynamic diurnal thermal storage and admittance within heavy masonry or concrete structures.
• Unmeasured background air permeability pathways, non-continuous wind pressure fluctuations, or undocumented thermal bypasses.
• Solar radiation thermal gains through fenestration, internal metabolic gains, or intermittent heating pickup allowances unless explicitly configured.

5. Intellectual Property & Permissible Use

The code architecture, layout, design tokens, and explanatory text on this Platform are the intellectual property of Heat Loss Calculator. You may freely use the calculations, export CSV schedules, and print PDF reports for personal, educational, and professional project designs. Automated scraping, reverse engineering, programmatic framing, or commercial redistribution of the calculation engines without prior written authorization is strictly prohibited.

6. Limitation of Liability & Disclaimer of Warranty

The Platform and its tools are provided on an "as is" and "as available" basis without warranties of any kind, whether express or implied. Under no circumstances shall Heat Loss Calculator, its maintainers, or technical contributors be held liable for any direct, indirect, consequential, or punitive damages—including but not limited to incorrect heating equipment sizing, equipment short-cycling, excessive fuel bills, or building regulation compliance failures—resulting from the use of or inability to use this site.

7. Contact & Governance

For permissions, API inquiries, or formal notices, contact our administration at: contact@heatlosscalculator.com.

These terms and any disputes arising out of or related to the use of this Platform shall be governed by and construed in accordance with the laws of England and Wales (the foundational jurisdiction for CIBSE and British Standards reference calculations), without regard to conflict of law principles.