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  • Average homeowner rating star icon4.8
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  • Verified reviews icon24
    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Elizabeth

Avatar for Home Performance Solutions LLC

Home Performance Solutions LLC

4.00(
1
)
Approved Pro

Home Performance Solutions LLC

4.00(
1
)
Approved Pro
25 years of experience
Free onsite estimate

We are extremely passionate about the work that we do. You can depend on us to provide a high quality service at a fair and honest price. Customer Service is our highest priorit and we provide a Free estimate! High Energy bills and Comfort issues can be directly attributed to a lack of Insulation and a leaky uncomfortable home. Since we are Building Science Gurus, we can directly fix Air leakage Issues using Blower Door directed Air sealing (Weatherization) with non-toxic low VOC caulking, sealing light cans, outlets etc....contributing to overall leaky home. In addition, most homes built 15-50 years ago are all lacking the proper insulation needed to have low utility bills and comfort issues Cellulose insulation is the most energy efficient attic insulation on the market! Giving a higher R-value per inch than fiberglass and air tight. We test homes before and after will provide 30-40% more air tightness than fiberglass.

"Happy with the overall time spent and work done and the results of having new insulation. A definite improvement."

Sara M on January 2026

We are extremely passionate about the work that we do. You can depend on us to provide a high quality service at a fair and honest price. Customer Service is our highest priorit and we provide a Free estimate! High Energy bills and Comfort issues can be directly attributed to a lack of Insulation and a leaky uncomfortable home. Since we are Building Science Gurus, we can directly fix Air leakage Issues using Blower Door directed Air sealing (Weatherization) with non-toxic low VOC caulking, sealing light cans, outlets etc....contributing to overall leaky home. In addition, most homes built 15-50 years ago are all lacking the proper insulation needed to have low utility bills and comfort issues Cellulose insulation is the most energy efficient attic insulation on the market! Giving a higher R-value per inch than fiberglass and air tight. We test homes before and after will provide 30-40% more air tightness than fiberglass.

"Happy with the overall time spent and work done and the results of having new insulation. A definite improvement."

Sara M on January 2026


Avatar for AtticWise, Inc.

AtticWise, Inc.

New on AngiNew on Angi
Approved Pro

AtticWise, Inc.

New on AngiNew on Angi
Approved Pro
7 years of experience
Free onsite estimate

We at AtticWise? take pride in our reliability, integrity and the quality of our work. We specialize in comprehensive home insulation needs offering the products and services of eShield? - an industry leader in reflective insulation - and Johns Manville? - provider of the utmost quality blown-in insulation. We make it a point to provide the highest level of customer service with both residential and commercial clients and apply the same attention to detail regardless of project size or complexity. We look forward to earning your business!

We at AtticWise? take pride in our reliability, integrity and the quality of our work. We specialize in comprehensive home insulation needs offering the products and services of eShield? - an industry leader in reflective insulation - and Johns Manville? - provider of the utmost quality blown-in insulation. We make it a point to provide the highest level of customer service with both residential and commercial clients and apply the same attention to detail regardless of project size or complexity. We look forward to earning your business!


Bestway Insulation, LLC

New on AngiNew on Angi
Approved Pro

Bestway Insulation, LLC

New on AngiNew on Angi
Approved Pro
50 years of experience
Free onsite estimate

Home Pro of the Year in 2010 (Service Magic)Home Performance Contractor of the Year for the last 8 out of 10 years. We are a company that specializes in re-insulating existing homes by using blown-in insulation and getting huge reductions on our customers energy bills by Air Sealing and compressing fiberglass or rockwool in the walls and Dense packing it tight.Where most companies are happy getting 10%energy reductions on their clients homes, we want 50% or higher. Our family has owned and operated Bestway Insulation, LLC, in Colorado since 1976. Born & raised CO. Top Rebate producer for air sealing in 2009 - 2021. Home Performance with energy star Contractor of the year 21 out of 23 Years starting with NREL when they were doing it in 1996. I want huge results for my clients.

Home Pro of the Year in 2010 (Service Magic)Home Performance Contractor of the Year for the last 8 out of 10 years. We are a company that specializes in re-insulating existing homes by using blown-in insulation and getting huge reductions on our customers energy bills by Air Sealing and compressing fiberglass or rockwool in the walls and Dense packing it tight.Where most companies are happy getting 10%energy reductions on their clients homes, we want 50% or higher. Our family has owned and operated Bestway Insulation, LLC, in Colorado since 1976. Born & raised CO. Top Rebate producer for air sealing in 2009 - 2021. Home Performance with energy star Contractor of the year 21 out of 23 Years starting with NREL when they were doing it in 1996. I want huge results for my clients.


Avatar for Colorado Home Services

Colorado Home Services

4.96(
110
)

Colorado Home Services

4.96(
110
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

CHS is a local, veteran-owned licensed electrical contractor that provides full residential electrical services with deep expertise in whole house fans, attic fans and ventilation, sun tunnels and skylights. We have been providing the most environmentally friendly, cost-effective and energy-efficient home cooling and daylighting solutions in Colorado since 2003. We pride ourselves on delivering an un-matched customer service experience. From pricing to install, our team is dedicated to earning your trust and finding the best home cooling and daylighting solutions for your home, no matter what! Offering industry-leading brands and a wide range of products suited for any home, we are Colorado's premier home electrical, cooling and daylighting provider.

"When it comes to home services, CHC sets the bar exceedingly high. They installed a whole house fan that dramatically reduced the amount I need to run my AC. They were on time, professional, and completed the install faster than expected (~3.5 hours). They cleaned up after and took some time to train me on the many ways I could use the fan to save energy and improve comfort in my home, some of which I wouldn't have thought of. In an industry where low expectations seems to be the norm, to say that CHC exceeds expectations is an understatement."

Tyler N on September 2022

CHS is a local, veteran-owned licensed electrical contractor that provides full residential electrical services with deep expertise in whole house fans, attic fans and ventilation, sun tunnels and skylights. We have been providing the most environmentally friendly, cost-effective and energy-efficient home cooling and daylighting solutions in Colorado since 2003. We pride ourselves on delivering an un-matched customer service experience. From pricing to install, our team is dedicated to earning your trust and finding the best home cooling and daylighting solutions for your home, no matter what! Offering industry-leading brands and a wide range of products suited for any home, we are Colorado's premier home electrical, cooling and daylighting provider.

"When it comes to home services, CHC sets the bar exceedingly high. They installed a whole house fan that dramatically reduced the amount I need to run my AC. They were on time, professional, and completed the install faster than expected (~3.5 hours). They cleaned up after and took some time to train me on the many ways I could use the fan to save energy and improve comfort in my home, some of which I wouldn't have thought of. In an industry where low expectations seems to be the norm, to say that CHC exceeds expectations is an understatement."

Tyler N on September 2022


Avatar for Scott Home Inspection LLC

Scott Home Inspection LLC

4.76(
62
)

Scott Home Inspection LLC

4.76(
62
)
Customers say: Super punctual
24 years of experience

Professional home inspection company serving the northern Colorado area including Larimer, Weld, Boulder, Adams, Broomfield, Jefferson and Denver counties. All inspections conducted according to American Society of Home Inspectors (ASHI) Standards-of-Practice & Code-of-Ethics. Certified Radon & Mold testing. On-line Scheduling of Inspections. On-site generation & printing of Inspection Report Summary. Internet access to Full Inspection Report. Why Scott Home Inspection? 15+ years experience in residential remodeling & electrical engineering project management. Candidate Member with ASHI - the most respected home inspection organization in North America. E&O Insurance Coverage + General Liability Insurance. Graduate ASHI Home Inspector Training Program. On-line, Real-Time Scheduling of Inspections. Web-based Inspection Report & Email Notification.

"Great service and attention to detail."

Jonny R on November 2019

Professional home inspection company serving the northern Colorado area including Larimer, Weld, Boulder, Adams, Broomfield, Jefferson and Denver counties. All inspections conducted according to American Society of Home Inspectors (ASHI) Standards-of-Practice & Code-of-Ethics. Certified Radon & Mold testing. On-line Scheduling of Inspections. On-site generation & printing of Inspection Report Summary. Internet access to Full Inspection Report. Why Scott Home Inspection? 15+ years experience in residential remodeling & electrical engineering project management. Candidate Member with ASHI - the most respected home inspection organization in North America. E&O Insurance Coverage + General Liability Insurance. Graduate ASHI Home Inspector Training Program. On-line, Real-Time Scheduling of Inspections. Web-based Inspection Report & Email Notification.

"Great service and attention to detail."

Jonny R on November 2019


Avatar for Key Heating & Air dba Oneguy Heating & Cooling

Key Heating & Air dba Oneguy Heating & Cooling

4.91(
85
)

Key Heating & Air dba Oneguy Heating & Cooling

4.91(
85
)
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

Your Heating & Air Conditioning Service Expert for over 20 years! As much as half of the energy used in your home goes to heating and cooling system. Making educated decisions about your home’s heating, ventilating, and air conditioning (HVAC) system can have a big effect on your utility bills — and your comfort. If your heating or air conditioning system is more than 10 years old, consider having them evaluated by the HVAC expert of Oneguy . We are an army of 4. I am a small company offering a higher quality installation of high efficiency equipment and system design in new custom homes or fixing all the trax homes that will not heat or cool with an Arzel wholehouse zoning system. A perfect solution for your basement finish project that will fix all your problems on the upper floors. Oneguy does not use sub-contractors unless it is a lic. plumber, electrician, to do any work out of my field to complete the job. I am lic. in Denver and most all metro cities and carry 2 million liability insurance. As an American Standard Dealer, I can provide you with the best furnaces and air conditioning units on the market as listed by consumer reports and consumer digest. You can look that up on thier web sites. Call Oneguy where quality takes priority 720-560-7100

"Excellent. Very professional, Final cost came in under estimate, substantially below competitive bid and with equipment."

Phil and Donna S on September 2020

Your Heating & Air Conditioning Service Expert for over 20 years! As much as half of the energy used in your home goes to heating and cooling system. Making educated decisions about your home’s heating, ventilating, and air conditioning (HVAC) system can have a big effect on your utility bills — and your comfort. If your heating or air conditioning system is more than 10 years old, consider having them evaluated by the HVAC expert of Oneguy . We are an army of 4. I am a small company offering a higher quality installation of high efficiency equipment and system design in new custom homes or fixing all the trax homes that will not heat or cool with an Arzel wholehouse zoning system. A perfect solution for your basement finish project that will fix all your problems on the upper floors. Oneguy does not use sub-contractors unless it is a lic. plumber, electrician, to do any work out of my field to complete the job. I am lic. in Denver and most all metro cities and carry 2 million liability insurance. As an American Standard Dealer, I can provide you with the best furnaces and air conditioning units on the market as listed by consumer reports and consumer digest. You can look that up on thier web sites. Call Oneguy where quality takes priority 720-560-7100

"Excellent. Very professional, Final cost came in under estimate, substantially below competitive bid and with equipment."

Phil and Donna S on September 2020


Avatar for American Veteran Heating & Air

American Veteran Heating & Air

5.00(
27
)

American Veteran Heating & Air

5.00(
27
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

*******NO SERVICE CALL FEE for Seniors, Veterans, First Responders, and Department of Defense workers******* American Veteran Heating & Air is family owned and operated led by Brian Conway, a six-year United States Army veteran, who is an HVAC professional with over 23 years of experience getting the job done right! We are proud to be the only residential UNION affiliated contractor in the entire Colorado Springs area. Being UNION trained means that we are able to provide our Clients with the most highly qualified technicians and installers. We have been members of SMART Local 9 UNION for over 20 years, we are members of the Benevolent and Protective Order of Elks Lodge 309, and are members of New Life Church here in Colorado Springs. We are blessed to have strong community ties and really enjoy giving back to this amazing group of people! We can handle your maintenance or repairs, system design, and installation with one simple call. Contact American Veteran Heating & Air today to help you with your next project!

"Great service.Arrived on time,very professional +respectful of Property! Thank you to Aaron,Dominic + Omar for a job well done.They completed job in 1/2 the time I thought it would take. Brian-You are lucky to have employees of this caliber!"

Dave J on December 2022

*******NO SERVICE CALL FEE for Seniors, Veterans, First Responders, and Department of Defense workers******* American Veteran Heating & Air is family owned and operated led by Brian Conway, a six-year United States Army veteran, who is an HVAC professional with over 23 years of experience getting the job done right! We are proud to be the only residential UNION affiliated contractor in the entire Colorado Springs area. Being UNION trained means that we are able to provide our Clients with the most highly qualified technicians and installers. We have been members of SMART Local 9 UNION for over 20 years, we are members of the Benevolent and Protective Order of Elks Lodge 309, and are members of New Life Church here in Colorado Springs. We are blessed to have strong community ties and really enjoy giving back to this amazing group of people! We can handle your maintenance or repairs, system design, and installation with one simple call. Contact American Veteran Heating & Air today to help you with your next project!

"Great service.Arrived on time,very professional +respectful of Property! Thank you to Aaron,Dominic + Omar for a job well done.They completed job in 1/2 the time I thought it would take. Brian-You are lucky to have employees of this caliber!"

Dave J on December 2022


Avatar for REenergizeCO Inc

REenergizeCO Inc

4.82(
34
)

REenergizeCO Inc

4.82(
34
)
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

We are a Denver-based home energy auditing company that believes basic building science errors are handicapping our local energy grid. REenergizeCO is an approved contractor with both Xcel and Denver Energy challenge, and we help you fill out all of the required paperwork to get the rebates from these programs.

"I had a great experience with REenergizeCO. They installed new insulation in the attic and crawlspace of my townhome. What a difference! The crew was efficient, helpful, and friendly, and the estimate was completely thorough. Dexter was wonderful to work with."

Sherri L on August 2024

We are a Denver-based home energy auditing company that believes basic building science errors are handicapping our local energy grid. REenergizeCO is an approved contractor with both Xcel and Denver Energy challenge, and we help you fill out all of the required paperwork to get the rebates from these programs.

"I had a great experience with REenergizeCO. They installed new insulation in the attic and crawlspace of my townhome. What a difference! The crew was efficient, helpful, and friendly, and the estimate was completely thorough. Dexter was wonderful to work with."

Sherri L on August 2024


Avatar for Premier Roofing Company

Premier Roofing Company

4.68(
44
)

Premier Roofing Company

4.68(
44
)
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

The Denver branch of Premier Roofing is dedicated to serving the restoration roofing needs of single-family homeowners and multi-family communities in the area. When hail or wind causes damage to roofs in our area, we go to the impacted neighborhoods to help homeowners get their roofs restored as quickly as possible. We work with all insurance companies, ensuring the only out of pocket cost to homeowners is their deductible. We are proud to provide quality craftsmanship, straight talk, great customer service and the best workmanship and material warranties in the industry.

"Work done well and quickly. Couple of small problems handled. They dealt completely with my insurance company and basically left me out of it. They also were here to ensure that the insurance estimator saw all the damage including that which was not related to the roof."

Wayne P on January 2018

The Denver branch of Premier Roofing is dedicated to serving the restoration roofing needs of single-family homeowners and multi-family communities in the area. When hail or wind causes damage to roofs in our area, we go to the impacted neighborhoods to help homeowners get their roofs restored as quickly as possible. We work with all insurance companies, ensuring the only out of pocket cost to homeowners is their deductible. We are proud to provide quality craftsmanship, straight talk, great customer service and the best workmanship and material warranties in the industry.

"Work done well and quickly. Couple of small problems handled. They dealt completely with my insurance company and basically left me out of it. They also were here to ensure that the insurance estimator saw all the damage including that which was not related to the roof."

Wayne P on January 2018


Avatar for HERITAGE ELECTRIC

HERITAGE ELECTRIC

4.81(
16
)

HERITAGE ELECTRIC

4.81(
16
)
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Electricians in Denver, we specialize in commercial, industrial, and residential electrical service and remodels. Heritage Electric is licensed, insured, and we service all cities in the Denver metro area. We're available for emergencies 24 hours a day.

Electricians in Denver, we specialize in commercial, industrial, and residential electrical service and remodels. Heritage Electric is licensed, insured, and we service all cities in the Denver metro area. We're available for emergencies 24 hours a day.

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Energy Efficiency Auditing questions, answered by experts

STC (Sound Transmission Class) ratings tell you how well something blocks airborne noise. It’s a single number that sums up how much sound a material, like a window, can stop across regular speech frequencies. The higher the number, the better the sound reduction. A typical single-pane window hovers around STC 25 (where you can hear normal conversations), while well-sealed, double-pane options can push past STC 45 (which blocks out loud speech and most music). Just keep in mind that STC doesn’t cover everything—low rumbles like bass or thunder can sneak through—so pairing methods are always ideal for the most peace and quiet.

Not all homes are suited for solar panel systems. Older roofs or those in poor condition may need repairs or replacement before solar panels can be installed. Some other factors to consider are the amount of sunlight your roof receives, the roof’s orientation and pitch, and any shading from nearby trees or buildings.

Upgrade to double-glazed glass or apply energy-efficient coatings to reduce heat loss and utility costs.

Smart glass doesn’t use a lot of electricity, and you can expect a standard window to add between $1 and $2 per year to your electric bills. Smart glass is proof that energy-efficient windows work. Although your smart windows may consume a little energy to operate, they can save enough energy to offset the costs. If you’re concerned about the minimal bump to your electricity consumption, you can opt for smart tint, which doesn’t require electricity to work.

You can determine what size generator you need by listing the various appliances it will power during an outage. Write down the start-up watt usage, and then add them all together. 

A 7,500-watt generator will run your refrigerator, freezer, well pump, and lighting circuits without a problem. However, you’ll need an extra 3,000 to 4,500 watts to run your water heater and another 5,000 to 25,000 watts to run your electric furnace. In these instances, a whole-home generator is your best bet for running your critical equipment.

The Elizabeth, CO homeowners’ guide to energy efficiency auditing services

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