Resource Library

How to Read the Wiring Diagrams of a Heat Pump to Understand how each of the Components Work and How they are Wired. We cover the Schematic Wiring Diagram, the Connection Diagram, and the Legend, as well as Explaining how the Defrost Board Works.

Guide for code enforcement and code user's review. It also gives contractors and designers an idea of what inspect during permitting and inspection processes. For HVAC heat pumps.

An extensive guide on old water heater replacement for efficient HPWH. Provides helpful checklists for before, during, and after HPWH installations.

Guide for code enforcement and code users review. It also gives contractors and designers an idea of what inspect during permitting and inspection processes. For HPWH.

Image of HVAC Filter

This image shows the major components of an HVAC system. The outdoor compressor is purple, the return ducts are blue, the supply ducts are red, and the the thermostat is orange.

This presentation provides some helpful images related to (mostly poor quality) installation.

This video describes basic information about HVAC systems including types of systems, proper installation tips and potential design pitfalls.

ICF Block Types

ICF Installation