Is your home too hot, too cold, drafty, or uncomfortable?

This could be caused by:

  • Leaks in the internal duct system
  • Little or no insulation
  • Air leakage through building envelope
  • Inefficiency or improperly sized HVAC system

Having an inefficient home is like throwing money out the window.

  • Your home is your biggest investment; becoming energy efficient saves thousands of dollars over its lifetime.
  • The utilities market is uncertain; becoming more efficient protects you from rising energy prices
  • We will show you where improvements can be made.

Benefits of properly insulating your home

  • Makes your home more comfortable
  • Lowers heating and cooling costs
  • Improves the air quality inside your home
  • Increases your home's resale value
  • Reduces household impact on the environment

Remodels and rebuilds with efficiency and green building in mind.

  • Green products are more durable.
  • Green products make for a healthier home.
  • Green products are better for the environment.
  • Green products increase resell value.

Efficiency Matters provides strategic whole home improvement services specializing in energy efficiency, sustainability and durability. This includes new construction, home remodeling services, insulation, air sealing, whole house fans, windows/doors, siding, and energy efficient retrofitting.

We have both the knowledge and experience to make your next project environmentally and financially successful.

Efficiency Matters is based in Fort Collins, CO and provides green home improvement services throughout Northern Colorado (Denver metro included) and southern Wyoming. We can travel upon request.

Free Consultation

Email us

Northern Colorado

Denver / Boulder



Remodeling / Retrofitting
We create healthy living spaces, with sustainable architecture, and responsible use of recycled materials. Talk to us about why green building is actually smart building.
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Case Studies

"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!"

- Ryan and Katy Kirkpatrick of Wellington, CO

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Certifications & Partners

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

YouTube Channel

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

Copyright 2014 Efficiency Matters, LLC All rights reserved

Read Unbiased Consumer Reviews Online at
Click for the BBB Business Review of this Energy Audits in Fort Collins CO


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.

    Tony Reyelts of Longmont, CO
    Greg, Just wanted to pass on thanks to Brett 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



    Efficiency Matters is growing and looking for new team members.

    Click here to download and application to include along with
    your resume.

    We offer competitive pay and a chance to learn valuable skills.

    Starting pay will be based on experience.

    Send application along with resume to: Greg Fox

    Yo hablo espanol

    If your location is in Fort Collins please use this link.

    If you are South of Loveland; Example Longmont, Boulder, Denver please user this link.

    This is for areas outside of Fort Collins, but not south of Loveland. Includes: Windsor, Wellington, Loveland, Estes Park, Etc.

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