Hand Holding Thermal Imager in Front of House

A good energy audit will give you an honest and unbiased analysis of the areas of your home that need to be improved.  A window replacement company is likely to recommend new windows.  A furnace contractor will recommend a new furnace. An insulation contractor will recommend more insulation. An independent and objective audit from EverGreen however, will show you where you can get the best return on your home improvement investment.

Using the nationally standardized BPI and HERS rating protocol, an assessment of the energy performance of your home by EverGreen includes:

  • A detailed occupant interview and utility bill analysis to identify specific concerns
  • A top to bottom building envelope inspection of the thermal barrier in the attic, walls, basement and other locations
  • Blower door testing to locate and measure air leakage and measure natural ventilation or the “tightness” of your home
  • State of the art infrared imaging (always in combination with a blower door!) to see air leakage and areas of ineffective or absent insulation
  • An inspection of heating and cooling equipment including testing for combustible gas leaks, carbon monoxide levels, and proper combustion appliance draft and venting
  • Appliances and lighting inspection to identify opportunities for significant savings and improved performance
  • Powerful energy modeling software with improvements analysis showing estimated energy savings and carbon reductions unique to your home
  • An indoor air quality inspection identifying mold and other indoor environmental hazards or concerns
  • A detailed and user friendly report with infrared images, narrative summary of findings and analysis of building performance problems and opportunities, with a prioritized list of cost-effective improvement recommendations.


We provide two types of professional energy audits – a comprehensive audit and a comprehensive audit plus HERS rating. And as a licensed and insured performance contracting company we can provide a proposal for making recommended improvements, guaranteed to improve the performance of your home. Depending on the level of energy audit, the process involves about 2 to 3 hours of in-home inspection and testing. Your report is an clear and unbiased analysis with an action plan for common sense and cost saving improvements.

EverGreen Comprehensive Audit

This audit includes a blower door test and infrared thermal scanning, and a home energy survey including detailed report with infrared images displayed clearly within a digital photo, with building envelope improvement recommendations. This audit is perfect for home owners that want a “snap shot” of the homes performance with recommendations for improvements.

EverGreen HERS Rating plus Comprehensive Audit

This audit plus HERS rating includes a blower door test and infrared thermal scanning, and a HERS rating (detailed energy modeling with improvement analysis of building components, i.e. – walls, windows, ceilings, foundation, etc.) including detailed report with recommendations. This audit is a good choice for the homeowner that want to see clearly which systems of the home are using the most energy, and how much upgrading each system will save in utility bills on an annual basis.

RESNET HERS Rater logo


  • I want to thank you for the great job that you did for us. I was able to experience first hand just how much work was involved, and how extensive the project was. If you ever need a commercial reference, please feel free to use Math Reviews.

    Pam B., Ann Arbor
  • Happy New Year! I just wanted to let you know how pleased we are with the upgrades you did for us at our home. The bathroom fan is amazing! And there is a noticeable difference in temperature between the storage part of the attic and the 'room' part of the attic. So thanks!

    Caitlin L., Ann Arbor
  • EverGreen did a fantastic job retro-fitting our home with the latest energy-saving materials, and sealing the unbelievably many places where heat was flowing out. I had no idea that there were so many ways to tighten and better insulate an old, "leaky" house.

    Beth S., Putnam Valley
  • No draftiness and the furnace runs less often. Other (my students) notice the music room is very stable in temperature. I especially liked the grouping of improvements and costs so I could figure out what to have done first.

    Jane H, Ann Arbor
  • No evidence of moisture (frost on the wall and floor)...furnace runs less...house retains heat better...Thanks! You may use me as a reference.

    Donna B, Manchester
  • Hello Nate, Wanted to let you know that my energy usage for mid Feb. - mid March was down from last year for the same period: electric down 34% and gas down 49%. What a difference it made putting in the insulation, changing some lightbulbs, and sealing up the band joists and crawl space.

    DeLynn C, Ann Arbor
  • Hi Nate - Attached below are the electrical and the gas usage comparisons for this house between 2008 and 2009. After Evergreen did the energy conservation work (Feb08), we saw substantial decreases in the gas usage from March 08 and onward...

    David B, Ypsilanti
  • After I had an energy audit by (an insulation company) I added insulation but still noticed a lot of the cold air leaks – Thank you for taking the time to explain to me and show me what was happening (using) your "blower door" – I will be doing air sealing next!"

    Jackie K, Ann Arbor
  • The very first night after (EverGreen) air sealing around our home we noticed such a difference in our daughters' bedroom – what a difference! Thank you!

    Michelle K, Ann Arbor
  • Architectural Resource endeavors to bring much more to our clients than merely great residential design. We are constantly looking to add value to our architectural services particularly in the Green and sustainable design areas. Energy management is a key component of our Green design process... Read More

    Michael Klement, AIA, NCARB, AIBD, CPBD, CGP Principal Architectural Resource, LLC , Ann Arbor