Green Remodeling and Deep Energy Retrofits

Green building based remodels. Additions, kitchens, baths, green houses, storage sheds all built with durability, efficiency, low embodied energy in mind.

Windows and Flooring
Custom Trim
Click any image to see a larger version

Is your kitchen or bath in need of a green make over? Let us install the latest green products in your bathrooms and kitchens. Green products are better for the environment, more durable, and make for a healthier home.

We will build your dream deck or patio using sustainable and durable products.

Moisture Control/Ventilation
Properly controlling moisture in your home will improve the effectiveness of your air sealing and insulation efforts, and vice versa. Thus, moisture control contributes to a home's overall energy efficiency. We will install the proper sized ventilation/fans for your home.

We practice the art of deconstruction in hopes of re-purposing any items taken from your home.


Rebate Center



Quick Links
Energy Audits
Whole House Fans
Energy Ratings
Green Building Consulting

YouTube Channel

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

Copyright 2013 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




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.

    Jackie & Henry Thompson of Fort Collins, CO
    The insulation work is paying off with very energy efficient temperature control. We didn’t use our A/C at all last summer and our natural gas bill for heating has been lower than previous years! Thanks!

    Tony Reyelts of Longmont, CO
    Just wanted to pass on thanks for a nice job well done. I've run the A/C in my house _once_ since the new Airscape fan was installed. And that was my own fault because I had two crock pots going full bore in the kitchen most all of that day.

    In the past, it didn't matter much that it was cooler at night: I simply couldn't get any of that cool air into the house. Overnight, I could maybe drop the temp 5 degrees total before having to close up in the morning... and that was with multiple fans running by windows. The picture below is a pretty good example of the new paradigm. On the same type of day before the fan, the indoor temp by noon without A/C would have been pushing 80. Now, I can get the house cool enough in the morning that it tops out at around 75 or so in the evening on a 90+ day... just around the time the outside is cooling off enough to start the cycle again.

    There's some additional savings in that I had been planning to install a ceiling fan in the master bedroom. I have a low-ceilinged house, so that wasn't my first choice. And now the whole house fan negates the need and does a better job, to boot.

    Anyway, thanks from a satisfied customer. I'll send anybody your way that I can.

    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


    Home Before

    Home After

    Wrapping the entire house in insulation

    Living Room After

    Custom Cabinets

    Custom built windows and flooring work

    Custom Trim work


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

    Comfort RX