HERS Testing

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Certified Eastern Iowa Residential HERS Testing

Preferred Energy Consultants has certified HERS testers that inspect and test a home in order to evaluate each of the minimum rated features established by RESNET. They also prepare a comprehensive residential HERS rating according to Chapters One and Three of the RESNET Mortgage Industry National Home Energy Rating. Keeping Cedar Rapids, Iowa City, Quad Cities, Dubuque and Waterloo, IA energy efficient!

What is a HERS rating?

A home energy rating involves an analysis of a home's construction plans and onsite inspections. Based on the home's plans, one of our Home Energy Raters uses an energy efficiency software package to perform an energy analysis of the home's design. This analysis yields a projected, pre-construction HERS Index. Upon completion of the plan review, the rater will work with the builder to identify the energy efficiency improvements needed to ensure the house will meet ENERGY STAR performance guidelines. The rater then conducts onsite inspections, typically including a blower door test and a duct leakage test.

Results of these tests, along with inputs derived from the plan review, are used to generate the HERS Index score for the home

Residential HERS Testing Certifications

As certified residential HERS testing raters, Preferred Energy Consultants can provide you with the residential certificates you need to show the building inspector. Our reliable and courteous professionals are happy to assist you all the HERS rating requirements and certifications.

  • Residential HVAC Alterations 
  • Residential New Construction & Energy Star Certifications
  • Solar Homes Certified

HERS Testing Includes

  • Duct Testing

  • Refrigerant Charge Verification

  • Airflow Measurement

  • Fan Watt Draw

  • NSHP Solar Verification

  • Quality Insulation Inspection

What is Blower Door Testing?

A blower door is a machine used to measure the airtightness of buildings. It can also be used to measure airflow between building zones, to test ductwork airtightness and to help physically locate air leakage sites in the building envelope.