Energy Ratings

A home energy rating involves an analysis of a home's layout/design and onsite inspections. We use a software package to perform an energy analysis of your home. We then conduct a blower door test (to test the leakiness of the house) and a duct test (to test the leakiness of the ducts). Results of these tests, along with inputs derived from the layout/design review, are used to generate the HERS Index score for your home.


The HERS Index is a scoring system established by the Residential Energy Services Network (RESNET) in which a home built to the specifications of the HERS Reference Home (based on the 2006 International Energy Conservation Code) scores a HERS Index of 100, while a net zero energy home scores a HERS Index of 0. The lower a home's HERS Index, the more energy efficient it is in comparison to the HERS Reference Home.

Each 1-point decrease in the HERS Index corresponds to a 1% reduction in energy consumption compared to the HERS Reference Home. Thus a home with a HERS Index of 85 is 15% more energy efficient than the HERS Reference Home and a home with a HERS Index of 80 is 20% more energy efficient.

Energy Rating Benefits
When purchasing a home a energy rating allows you to compare homes in relation to their energy efficiency.

  • A energy rating is mandatory when qualifying for an energy efficient mortgage (EEM).
  • A energy rating is mandatory for a home to be labeled as ENERGY STAR.
  • Energy ratings can help qualify your home for certain rebates.

For more information on HERS energy ratings, visit the RESNET web site.

Energy Star We are proud to provide rating services to qualify new homes for the ENERGY STAR® label. ENERGY STAR qualified new homes are substantially more energy efficient than homes built to the minimum code requirements. Even in states with more rigorous energy codes, the U.S. EPA ensures that ENERGY STAR remains the symbol for truly energy-efficient performance. These homes are good for businesses, consumers, and the environment.

Benefits of owning an ENERGY STAR qualified new home include:

A Label Backed by the Government
All ENERGY STAR qualified new homes are certified to meet EPA's strict guidelines for energy efficiency. This exemplary performance is verified by an independent third party.

Lower Utility Costs
Compared with standard homes, ENERGY STAR qualified new homes use substantially less energy for heating, cooling, and hot water heating. Homeowners can expect to save about $200-$400 annually on their utility bills.

More Comfortable/Quieter Homes
The energy-efficient features of ENERGY STAR qualified new homes keep out excessive heat, cold, and noise, and ensure consistent temperatures between and across rooms-making these homes more comfortable to live in.

Helping to Create a Better Future
By purchasing an ENERGY STAR qualified new home, you are joining millions of consumers who have changed to ENERGY STAR, helping our nation reduce our energy needs and building a cleaner environment for the future.

Learn more about ENERGY STAR qualified new homes at


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Northern Colorado: 970-556-1249
Denver: 720-515-1250

Copyright 2014 Efficiency Matters, LLC All rights reserved


Contact Us

Efficiency Matters, LLC provides top quality Home Energy Audits and
Home Energy Ratings using the latest technology, detailed analysis,
and detection.

1800 E Lincoln Ave, Suite A Fort Collins, CO 80524

Northern Colorado: 970-556-1249
Denver: 720-515-1250



About Us

Our approach is to LOOK, LISTEN, EVALUATE, and UNDERSTAND.
These are the core principles that guide us through our everyday business.

Greg Fox - Owner
Greg has been involved with residential construction and green building for the last 10 years.
His passion is creating ideal situations for homeowners so they can safely and comfortably
enjoy their time spent at home. This is important since purchasing a home is on average the
largest investment you will make in your lifetime.

In his spare time he enjoys fishing, skiing, working on his own home, and in general, enjoying
what Colorado has to offer.


  • BPI Certified Building Analyst
  • RESNET Certified Energy Rater
  • LEED Green Associate
  • Colorado State University; Green Building Certificate
  • Northern Arizona University; B.S. in Environmental Sciences

Direct: 970-658-6540
Denver: 720-515-1250




Christopher Swetnam - Master Carpenter

Christopher’s carpentry experience began 14 years ago in college restoring a home in Flagstaff, Arizona. His experience progressed to historic restoration for the state of Colorado with court houses, high schools, and homesteads. He owned and operated a private contracting company that focused on remodel and new builds for private clients and has currently partnered with the Efficiency Matters team.

Christopher Swetnam resides in Fort Collins, Colorado with his wife and children. He was born in Flagstaff, Arizona where he received a b.s. from Northern Arizona University. He loves spending time with his family, white water rafting, telemark skiing, and hockey.

Direct: 970-980-3966



Mike Rodriguez - General Manager

Mike Rodriguez has more than 15 years’ experience in construction management and has spent the last 7 years specializing in green building. Mike began his “green” work at Energy Logic as an energy auditor and rater for new construction and existing homes. During his time with Energy Logic he saw a real need in the industry for a reliable and knowledgeable contractor to perform energy retrofits and green builds. He owned and operated an energy retrofit company and soon after partnered with Efficiency Matters where he is able to combine his passion for energy efficiency and general contracting while helping homeowners save money and improve overall health and comfort in their home.

Mike resides in Longmont with his wife, 2 children, and Great Dane. He enjoys snowboarding and travel but most weekends are busy watching his son’s football, baseball, and lacrosse games.

Certifications & Credentials:

  • Class D1 License and Supervisor Certificate through the City of Fort Collins
  • MOS School for Diesel Mechanic in the United States Marine Corp
  • Building Performance Institute Certified Building Analyst
  • Certified RESNET Energy Rater
  • Certified Foam Insulation Installer

  • Phone
    Direct: 720-469-5219



    What our customers are saying

    At Efficiency Matters, your comfort and complete satisfaction is our top priority.
    We would be glad to provide references so you can hear about us first hand.

    Here are just a few examples of what our customers are saying.

    Jim and Karin Higgins of Fort Collins, CO
    In the fall Efficiency Matters did a major upgrade to the efficiency of our home. It turned out we had a home with many air leaks that were robbing us of needed heat in the winter and we were losing our cool in the summer. Efficiency Matters did a comprehensive analysis of the house and recommended several things that could be done to tighten the house and make our heating and cooling systems operate more efficiently. Recommendations were made considering the return on investment value. We have gone through a winter and half of a very hot summer and could not be more pleased. Our utility bills are roughly half what they used to be. Great job Efficiency Matters, I will recommend your services to anyone.

    Ryan and Katy Kirkpatrick of Wellington, CO
    "We would definitely recommend having an energy audit done by Efficiency Matters.
    Greg was knowledgeable, professional and honest. We really appreciated that he told us about many improvements that we could do ourselves (and exactly how to do them), in addition to completing two larger improvements for us. We found the price of these “retrofits” reasonable and workmanship excellent! As first-time homeowners, this was a great investment for us and we are very happy with the company we chose. Thanks Greg!"

    Gary Zook of Fort Collins, CO
    I would describe Greg as honest, thoughtful, conscientious, thorough, and hard working. I've worked with many contractors through the years and while most of them do a decent job, a few of them really impress with both their skills and attitude. Greg is one of the best and I would not hesitate to recommend him for improving the energy efficiency of your home.
    Read Full Testimonial

    Scott Rogers of Windsor, CO
    Greg, I wanted to give you a follow-up on how things are working. Since yesterday was such a hot day we really got to see how things were working. I must say we are VERY HAPPY with the results. Amy said the house stayed very cool until after 7:00PM. Then the A/C came on for only a few minutes. We used the Whole House Fan around 9:00 PM and it cooled the upstairs 2 degrees (making the whole house the same temp). We slept very comfortably last night. This is exactly the results we were hoping for. Thank you so much!



    Efficiency Matters is proud to partner with the following companies
    to bring you the best services and products for your home

    Comfort RX