Editorial & Verification Policy

📐 1. Calculation Standards & Physics Derivations

Unlike consumer websites that rely on crude "rules of thumb" (such as multiplying floor area by an arbitrary Wattage figure), every calculation engine on Heat Loss Calculator implements recognized, published thermodynamic equations derived directly from governing international standards:

• Fabric Heat Transmission: Governed by steady-state Fourier conduction models conforming to BS EN 12831-1:2017 and BS EN ISO 6946:2017 (combining surface thermal resistances surface thermal resistances R_si, R_se, and material thermal conductivity λ).
• Volumetric Ventilation Losses: Derived from standard air density (ρ = 1.204 kg/m³) and specific heat capacity (c_p = 1005 J/kg·K), applying the recognized constant 0.33 Wh/m³K specified in CIBSE Guide A (Section 5).
• Radiator Output Correction: Calculated under BS EN 442-2 utilizing the standard non-linear exponent $n = 1.30$ to model emission derating at low flow temperatures ($\Delta T30$ and $\Delta T25$).
• Climatic Design Conditions: 99.6% winter outdoor design temperatures sourced from CIBSE Guide A (Table 2.24) weather stations and ASHRAE Climatic Design Information (Fundamentals Chapter 14).

🛡️ 2. Editorial Independence & Monetization Transparency

Our core mission is to provide an uncompromised, objective engineering reference. To safeguard editorial objectivity:

• Zero Commercial Sponsorship: We do not accept payment, equipment donations, or kickbacks from boiler manufacturers, heat pump brands, or radiator distributors.
• Zero Affiliate Links: Our tools and articles contain no affiliate tracking tags or pay-per-click referral partnerships. Sizing recommendations are based purely on physics, not commercial kickbacks.
• Zero Intrusive Ad Networks: We do not run third-party popups, auto-playing video banners, or programmatic ad tech that disrupts calculation workflows or tracks user behavior across the web.

🤖 3. Computational Tools & AI Disclosure

We leverage modern software engineering tools, static site generators (Astro), and automated test suites to build our web calculators and format explanatory documentation.

All mathematical formulas, unit conversion coefficients, and regulatory citations published on this site are manually verified against primary standards documents (BSI, CIBSE, ISO, ASHRAE, and UK Building Regulations). We do not deploy autonomous AI bots to generate unverified engineering advice or synthetic author personas.

⚖️ 4. Corrections Policy & Public Log

We welcome scrutiny from practicing HVAC engineers, building services designers, MCS contractors, and academic researchers. When a mathematical discrepancy, typographical error, or regulatory code update is brought to our attention, our process is:

1. Acknowledgment: We log the query and confirm receipt within 1 to 2 business days.
2. Cross-Verification: The claim is checked against current primary standards (e.g., the latest revision of BS EN 12831 or Approved Document L).
3. Remediation: If a formula or constant requires adjustment, the code is updated and deployed immediately.
4. Public Transparency: Material corrections are noted with an update notice on the affected page and recorded in our changelog below.