Version 1.0 · Effective November 11, 2026
Your use of this App is governed by the KHouse Terms of Use (version 1.0), which applies to every KHouse app, together with this Addendum.
This Addendum adds to the KHouse Terms of Use and Privacy Policy. They apply in full except where a clause below says it changes a named section for this App.
Estimates heat loss and heating requirements for storage tanks and piping and produces equipment sizing and PDF reports.
Outputs are engineering estimates only, based on simplified thermal models, empirical correlations (including ASTM C680 methods and published natural-convection correlations), historical weather and your inputs. They are not certifications, sealed calculations or professional engineering opinions. Every design, equipment selection and operating decision must be independently verified by a professional engineer licensed in the jurisdiction and checked against applicable codes (for example API 650, ASME, NFPA). Weather data are historical averages and may not reflect future conditions.
Weather: Open-Meteo historical archive and geocoding, with ZIP lookup by Zippopotam.us. Product properties: public references (NIST Chemistry WebBook, CRC Handbook, NOAA CAMEO Chemicals, manufacturer SDS, literature). Equipment data: public manufacturer catalogues. Credits are on the Attributions page and in each report. Third-party data is not warranted.
Do not present outputs as certified engineering calculations.
None.
See also the Privacy Addendum. Questions: scott@bluewatervision.net.