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July 23, 2025February 12, 2012

Winter’s coming. It’s already heating season. So how do you save money on heating costs? You’ve got to own your heat. Simple as that. You’ve paid for all that warm air already, so it doesn’t make much sense to waste it now.

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Customer Reviews

Jeremy: Thank you for sending. As I mentioned to you on Thursday, I appreciate your attention to detail. This report… Read more “Peter, Denver”

Peter - Denver, CO

Don’t know what we’d do without your thoroughness. Your detailed reports & other information has helped immeasurably while working with… Read more “Doug from Frederick”

Doug - Frederick

Thank you for your work and the information and professionalism.

Judy - Denver, CO

Andy, Jeremy – I just wanted to let you know I didn’t have any questions or concerns with the Audit… Read more “Testimonial”

Tom - Denver, CO

Andy, Thank you, I knew the energy audit would be worth the cost when we first talked. I did not… Read more “Testimonial”

Peter - Aurora, CO

Have you seen this yet? Wow….what a great report, just stating the facts, with no opinions in the building science… Read more “Testimonial”

Brian - Denver, CO

Dear Andy, Based on a recent Xcel Energy bill, which indicated that the energy usage in my home is considerably… Read more “Ken from Evergreen”

Ken - Evergreen, CO

Dear Andy, Based on a recent Xcel Energy bill, which indicated that the energy usage in my home is considerably… Read more “Sarah from Denver”

Sarah - Denver, CO

As the owner of an older home in Denver facing high utility bills, I was looking for an expert opinion… Read more “Testimonial”

Marc - Denver, CO

Hi Andy. Thx for the audit. Very educational read..

Brian - Denver, CO

Janice had 20 ppm ambient in the home – 3008 ppm CO emissions to the outside – “The energy audit… Read more “Testimonial”

Janice - Denver, CO

Thank you both for the suggestions, and for the photos and excellent energy audit report!

Rick

I just wanted to thank you for your participation with the Denver Energy Challenge and as an Xcel approved home… Read more “Cory”

Cory

I was very impressed by the thoroughness of your report and that you were very nice to work with.

Phil - Denver, CO

Andy, Thank you for your detailed report and the valuable time you spent with me on the phone and Taylor… Read more “Christine”

Christine

Thank you for supporting the participation of Andy Wildenberg in the U.S. Department of Energy’s Multifamily Job Task Analysis (JTA)… Read more “Testimonial”

NREL

Also, I wanted you to know that I was able to reduce the heat after you insulated and still be… Read more “Jo”

Steve came and did my assessment which was absolutely fabulous. I learned a lot! Thanks to all of you for… Read more “Nancy | Arvada, CO”

Nancy - Arvada, CO

First, thank you for a very professional, and exceptional job. We have had a couple of very positive remarks on… Read more “Testimonial”

Cathy and Bob - Boulder, CO

Thank you so much for your help, and for the information in the report, it was very helpful. Walking around… Read more “Testimonial”

Jeremy and Jolene - Thornton, CO

Thanks so much for going above and beyond to help us!

Dan - Denver, CO

We first contacted Andy Wildenberg, owner of e3 Power, through their advertisement on the Internet. We asked Andy to do… Read more “Testimonial”

Kennel and Cheryl - Indian Hills, CO

[Andy] and [Steve] were professional, comprehensive in their study of our energy use and our building, and thorough in their… Read more “Testimonial”

Rory - Lakewood, CO

Jeremy did a wonderful job. He was patient, polite, thorough, knowledgeable, and friendly. Be assured I will post favorable reviews… Read more “George from Boulder”

George - Boulder, CO