Contractor Resources & Links


Training and study resources are available through Saturn Resource Management (

We strongly suggest purchasing Residential Energy: Cost Savings and Comfort for Existing Buildings by John Krigger and Chris Dorsi.

The class study guides are:

The Blower Door Testing Reference Sheet is a good resource.

The Energy Conservatory user manuals are useful.

Retrotec has been a great supporter of the St. Louis regional HPwES program and has good learning resources.

Helpful Contractor Links


Greater St. Louis Home Performance with ENERGY STAR Contractor Forum

Saturn Resource Management
Online study materials and online training

Building Performance Institute
Training, certification, accreditation, and quality assurance

Kansas Building Science Institute (KBSI)
BPI and HERS rater training/certification located in Manhattan, Kansas

Metropolitan Energy Center (MEC)
BPI training located in Kansas City, Missouri

Residential Energy Services Network (RESNET)
A national standards-making body for building energy efficiency rating systems; provides contractor certification.

The Energy Conservatory
Energy assessment equipment

Professional Equipment

Energy assessment equipment

Energy Federation Inc.
Energy efficiency products

Contractor Portal
Downloadable forms and documents for participating contractors are available at our Contractor Portal.

Contractor Forum
Got a question for a fellow contractor? Got resources you’d like to share with other area contractors? Join the conversation at our forum.