How to read the source list
Each guide lists the sources supporting its most important factual statements. We favor official agencies, licensing authorities, public programs, standards, and manufacturer instructions appropriate to the exact context.
The scope note explains what a source can support and where it stops. For a provider, property, vehicle, patient, or facility decision, verify the current record directly.
Current source pack
- Heat pump water heater guideENERGY STAR
Equipment benefits and considerations; site conditions and current rates still matter.
- Heat pump water heater design considerationsENERGY STAR
Sizing and installation planning; not a model recommendation.
- Utilities and major systems after an emergencyAmerican Red Cross
Immediate utility safety and qualified-inspection boundaries.