Sources & Methodology
Our diagnostic guidance references established engineering standards. This page documents those sources so homeowners and professionals can verify the foundation of our recommendations.
Last updated: August 2026
How We Use These Standards
ServiceFind.Center uses these standards to classify home service issues into diagnostic categories — not to provide engineering specifications or replace professional judgment. Diagnostics identify the likely type of problem. A licensed professional on-site always determines the specific cause and solution.
Thermodynamics & HVAC
ASHRAE 62.1 — Ventilation for Acceptable Indoor Air Quality
American Society of Heating, Refrigerating and Air-Conditioning Engineers
ASHRAE 90.1 — Energy Standard for Buildings
American Society of Heating, Refrigerating and Air-Conditioning Engineers
Plumbing & Fluid Dynamics
IAPMO Uniform Plumbing Code (UPC)
International Association of Plumbing and Mechanical Officials
ASPE Plumbing Engineering Design Handbook
American Society of Plumbing Engineers
Electrical
NEC 2023 — National Electrical Code (NFPA 70)
National Fire Protection Association
Structural & Materials
ASTM International Standards — Materials testing and performance
ASTM International
ASCE 7 — Minimum Design Loads for Buildings and Other Structures
American Society of Civil Engineers