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TRUSTED BY HOMEOWNERS

Average homeowner rating star icon4.6
Average homeowner rating
Verified reviews icon19
Verified energy efficiency auditing services reviews

Energy efficiency auditors in Firestone

Avatar for Lion Home Service
Lion Home Service
4868 Innovation Dr
4.49(
77
)
Approved Pro
Lion Home Service
4868 Innovation Dr
4.49(
77
)
Approved Pro
Customers say: Super punctual
161 local quotes requested
16 years of experience

Lion Home Service is setting a new standard of excellence in the industry. We specialize in prompt service, quality fixes, and a reliable response that you can trust. We take pride in our reputation and have built our business one satisfied customer at a time. Whether you need an emergency repair, regular maintenance, or have a project you are planning, we are your total home solution. Service Delivered With Pride! Heating, Cooling, Electrical, Plumbing, Drain Cleaning, Septic, Roofing, Gutters, Indoor Air Quality and MORE! Look for the Home Service company offering the best service and guarantees to ensure your repair or service is done correctly the first time! 100% SATISFACTION GUARANTEE- We agree to accept responsibility for your complete satisfaction with the materials we use and the workmanship we provide. During the first year, if you are dissatisfied with our service or our people for any reason, we will do whatever it takes to make it right and correct the problem to your satisfaction. Additional Guarantees- We Value Your Safety- No Blame Game-We Value Your Time-Apples to Apples -Workmanship

"Lion Home Service did a terrific job pumping our septic tanks. They sent out their technician early on a Saturday morning."

Janet O on January 2025

Lion Home Service is setting a new standard of excellence in the industry. We specialize in prompt service, quality fixes, and a reliable response that you can trust. We take pride in our reputation and have built our business one satisfied customer at a time. Whether you need an emergency repair, regular maintenance, or have a project you are planning, we are your total home solution. Service Delivered With Pride! Heating, Cooling, Electrical, Plumbing, Drain Cleaning, Septic, Roofing, Gutters, Indoor Air Quality and MORE! Look for the Home Service company offering the best service and guarantees to ensure your repair or service is done correctly the first time! 100% SATISFACTION GUARANTEE- We agree to accept responsibility for your complete satisfaction with the materials we use and the workmanship we provide. During the first year, if you are dissatisfied with our service or our people for any reason, we will do whatever it takes to make it right and correct the problem to your satisfaction. Additional Guarantees- We Value Your Safety- No Blame Game-We Value Your Time-Apples to Apples -Workmanship

"Lion Home Service did a terrific job pumping our septic tanks. They sent out their technician early on a Saturday morning."

Janet O on January 2025


Avatar for One Source Home Service
One Source Home Service
3740 Interpark Drive
4.27(
541
)
Approved Pro
One Source Home Service
3740 Interpark Drive
4.27(
541
)
Approved Pro
Customers say: Super punctual
103 local quotes requested
13 years of experience

One Source Home Service is a family owned & operated company and has an A rating with the Better Business Bureau. We are here to provide you with the ultimate customer service experience and we are now offering plumbing and electrical .Rest assured you will be well taken care of by our experienced team of service and maintenance technicians. We have over 25 years experience in residential and light commercial. Denver H & V A License #LIC00247049 Denver Refrigeration A License #LIC00247050

"Word of caution, call for action: Our heater went out during the last snow storm and we called One Source Home Service out. They overcharged for parts and labor, SIGNIFICANTLY. I was on the Ramsey show, Denver, yesterday and we are now launching an investigation and I am working towards a class action. If you have had a horrible experience with this company please reach out to me via call or text at 719.357.8017."

Gary G on December 2024

One Source Home Service is a family owned & operated company and has an A rating with the Better Business Bureau. We are here to provide you with the ultimate customer service experience and we are now offering plumbing and electrical .Rest assured you will be well taken care of by our experienced team of service and maintenance technicians. We have over 25 years experience in residential and light commercial. Denver H & V A License #LIC00247049 Denver Refrigeration A License #LIC00247050

"Word of caution, call for action: Our heater went out during the last snow storm and we called One Source Home Service out. They overcharged for parts and labor, SIGNIFICANTLY. I was on the Ramsey show, Denver, yesterday and we are now launching an investigation and I am working towards a class action. If you have had a horrible experience with this company please reach out to me via call or text at 719.357.8017."

Gary G on December 2024


Avatar for Behold Heating & Cooling Services
Behold Heating & Cooling Services
9800 Mt Pyramid Ct #4040
4.92(
25
)
Approved Pro
Behold Heating & Cooling Services
9800 Mt Pyramid Ct #4040
4.92(
25
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
292 local quotes requested

Behold the Difference! Every day we are invited into our customer’s homes. Into their safe place and sanctuary. Quite often this is in the midst of a concern or issue that needs to be fixed! With an extensive background that spans well beyond just the trades, we love to be different. In addition to decades of industry experience, we bring some secret sauce - we love to take all the time needed to help, to make sure you are comfortable, and to provide amazing solutions. Come BEHOLD the difference! "Unfortunately we do not service or intall swamp or evaporative coolers".

"Went great. The team responded very quickly to the initial inspection request, and were very helpful and communicative during the process of getting it replaced."

Daniel H on March 2025

Behold the Difference! Every day we are invited into our customer’s homes. Into their safe place and sanctuary. Quite often this is in the midst of a concern or issue that needs to be fixed! With an extensive background that spans well beyond just the trades, we love to be different. In addition to decades of industry experience, we bring some secret sauce - we love to take all the time needed to help, to make sure you are comfortable, and to provide amazing solutions. Come BEHOLD the difference! "Unfortunately we do not service or intall swamp or evaporative coolers".

"Went great. The team responded very quickly to the initial inspection request, and were very helpful and communicative during the process of getting it replaced."

Daniel H on March 2025


Avatar for High 5 Plumbing, Heating, Cooling & Electric
High 5 Plumbing, Heating, Cooling & Electric
15710 W COLFAX AVE
4.69(
75
)
Approved Pro
High 5 Plumbing, Heating, Cooling & Electric
15710 W COLFAX AVE
4.69(
75
)
Approved Pro
Customers say: Quick response
222 local quotes requested
13 years of experience

If you have any plumbing, heating, cooling or electrical issues at all, contact the experts at High 5 today. We are highly experienced and extensively trained. Using state-of-the-art equipment and a comprehensive understanding of plumbing and HVAC, we handle all of your needs in a timely and professional manner. Whether you need to install, repair, or replace piping, unclog a toilet, replace your ceiling fan, repair an electrical box, install a new air conditioner, need furnace maintenance, or more, they can handle it quickly and efficiently. With High 5, you can count on their expert plumbers, electricians, and HVAC technicians to show up as at your home on time and ready to work. We are well-known among their customers and neighbors for our ethical and honest mode of operation. Many other companies take advantage of their customers’ lack of experience and provide low-quality services at exorbitant rates. At High 5, we've built our business based on honesty, integrity, quality work, and exceptional service at fair pricing. Because of these values, it has allowed us to employ the best of the best in our professional fields. Contact us today and schedule an in-home cost estimate for your plumbing, HVAC or electrical in the Denver area. We proudly offer a Senior Discount and Military Discount of 10% off up to $100.

"The project went smoothly, from the inititial call to setting the date and the actual work. The plumber was friendly and professional and showed up on time. He had all the required parts on his truck and completed the job within 30 minutes. The project rate ended up being in the ballpark of what I expected. It would have been nice to have some idea of the price before they showed up though. This seems to be an overall issue with Angi's list with 5+ vendors wanting to show up at you house before providing an estimate. It's probably the nature of the work..."

Matt B on August 2024

If you have any plumbing, heating, cooling or electrical issues at all, contact the experts at High 5 today. We are highly experienced and extensively trained. Using state-of-the-art equipment and a comprehensive understanding of plumbing and HVAC, we handle all of your needs in a timely and professional manner. Whether you need to install, repair, or replace piping, unclog a toilet, replace your ceiling fan, repair an electrical box, install a new air conditioner, need furnace maintenance, or more, they can handle it quickly and efficiently. With High 5, you can count on their expert plumbers, electricians, and HVAC technicians to show up as at your home on time and ready to work. We are well-known among their customers and neighbors for our ethical and honest mode of operation. Many other companies take advantage of their customers’ lack of experience and provide low-quality services at exorbitant rates. At High 5, we've built our business based on honesty, integrity, quality work, and exceptional service at fair pricing. Because of these values, it has allowed us to employ the best of the best in our professional fields. Contact us today and schedule an in-home cost estimate for your plumbing, HVAC or electrical in the Denver area. We proudly offer a Senior Discount and Military Discount of 10% off up to $100.

"The project went smoothly, from the inititial call to setting the date and the actual work. The plumber was friendly and professional and showed up on time. He had all the required parts on his truck and completed the job within 30 minutes. The project rate ended up being in the ballpark of what I expected. It would have been nice to have some idea of the price before they showed up though. This seems to be an overall issue with Angi's list with 5+ vendors wanting to show up at you house before providing an estimate. It's probably the nature of the work..."

Matt B on August 2024


Avatar for Heart Heating, Cooling, Plumbing & Electric
Heart Heating, Cooling, Plumbing & Electric
646 Bryant St
4.75(
73
)
Approved Pro
Heart Heating, Cooling, Plumbing & Electric
646 Bryant St
4.75(
73
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
233 local quotes requested

Heart Heating, Cooling, Plumbing & Electric provides the highest quality service for all your Furnaces, Air Conditioner, Boilers, Water Heaters, plumbing, and electrical systems. We utilize the latest technology to save our customers time and money, including tablet-based systems with "Uber Style" tracking of your technician and "Up Front" pricing so there are never any surprises. Our staff is licensed, insured, background checked, drug tested, and in a company uniform and vehicle for your safety and peace of mind. We are a veteran-owned company.

"Liars, Crooks and very dishonest"

Christopher L on September 2024

Heart Heating, Cooling, Plumbing & Electric provides the highest quality service for all your Furnaces, Air Conditioner, Boilers, Water Heaters, plumbing, and electrical systems. We utilize the latest technology to save our customers time and money, including tablet-based systems with "Uber Style" tracking of your technician and "Up Front" pricing so there are never any surprises. Our staff is licensed, insured, background checked, drug tested, and in a company uniform and vehicle for your safety and peace of mind. We are a veteran-owned company.

"Liars, Crooks and very dishonest"

Christopher L on September 2024


Avatar for Time Plumbing, Heating & Electric INC
Time Plumbing, Heating & Electric INC
2525 W 6th Ave.
4.45(
29
)
Approved Pro
Time Plumbing, Heating & Electric INC
2525 W 6th Ave.
4.45(
29
)
Approved Pro
Customers say: Quality work
52 local quotes requested
42 years of experience

Founded in 1983, Time Plumbing, Heating & Electric Inc. has been serving the Denver, CO area with their plumbing, heating and electrical needs. If you have a drain that needs cleaning, a heater installed, or your panel box upgraded, then call the experts at Time Plumbing, Heating & Electric Inc. They are excited to hear from you so make the call now for your next appointment!

"So I've just sold my home in Lakewood and the Technicians at Time have come to repair a furnace motor and correct an code violation in my electrical panel that the city missed when I stalled 4 years ago. Their service has always been excellent. Madison returns messages first thing in the morning. The electrician Kevin Wendt explained the code violations clearly and corrected in 2 hours. I forgot the young man who repaired my furnace but he found the last motor in town for my model, potentially saving me having to spend thousands more. Home repair is never a pleasant experience but 3 times over the last decade, this business has given me peace of mind and fixed all issues quickly and professionally. Richard Gainer"

Richard G on April 2023

Founded in 1983, Time Plumbing, Heating & Electric Inc. has been serving the Denver, CO area with their plumbing, heating and electrical needs. If you have a drain that needs cleaning, a heater installed, or your panel box upgraded, then call the experts at Time Plumbing, Heating & Electric Inc. They are excited to hear from you so make the call now for your next appointment!

"So I've just sold my home in Lakewood and the Technicians at Time have come to repair a furnace motor and correct an code violation in my electrical panel that the city missed when I stalled 4 years ago. Their service has always been excellent. Madison returns messages first thing in the morning. The electrician Kevin Wendt explained the code violations clearly and corrected in 2 hours. I forgot the young man who repaired my furnace but he found the last motor in town for my model, potentially saving me having to spend thousands more. Home repair is never a pleasant experience but 3 times over the last decade, this business has given me peace of mind and fixed all issues quickly and professionally. Richard Gainer"

Richard G on April 2023


Avatar for FerguSons Heating and Cooling LLC
FerguSons Heating and Cooling LLC
5.00(
5
)
Approved Pro
FerguSons Heating and Cooling LLC
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 local quotes requested

We offer all of your residential and commercial needs at a competitive price. We provide complete installs, repairs, emergency calls as well as full service for your ac, furnace, water heaters and swamp coolers.

"My dad is elderly and needed a new HVAC system. So I decided to find a person who could install a new HVAC system and we found Cody. Cody was very friendly, honest, and communicated very well. At one point he told us we could probably go another 3-5 years with the current system, but since my dad only has so many years left we told he to go ahead and install a whole new system in. He treated us like gold and even spent the time showing my Dad all the new features with the thermostat. I would highly recommend Cody for any repairs or HVAC needs you have."

Brian T on June 2021

We offer all of your residential and commercial needs at a competitive price. We provide complete installs, repairs, emergency calls as well as full service for your ac, furnace, water heaters and swamp coolers.

"My dad is elderly and needed a new HVAC system. So I decided to find a person who could install a new HVAC system and we found Cody. Cody was very friendly, honest, and communicated very well. At one point he told us we could probably go another 3-5 years with the current system, but since my dad only has so many years left we told he to go ahead and install a whole new system in. He treated us like gold and even spent the time showing my Dad all the new features with the thermostat. I would highly recommend Cody for any repairs or HVAC needs you have."

Brian T on June 2021


Avatar for REenergizeCO, Inc.
REenergizeCO, Inc.
1791 East 58th Avenue, Unit B
4.80(
123
)
Approved Pro
REenergizeCO, Inc.
1791 East 58th Avenue, Unit B
4.80(
123
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
13 years of experience

REenergizeCO is an approved contractor through Xcel Energy and Efficiency Works that specializes in home energy audits and insulation upgrades that improve the quality and efficiency of existing residential homes along the front range. Properly installed insulation in the attic, walls, crawl space, garage, basement, and air sealing are a few of the services offered. Reach out to schedule an energy audit or a free estimate with one of our BPI-certified technicians.

"The inspection went well. It's after the inspection that is terrible. Telling me that I need these things done to improve the then charging an astronomical amount of money. I was willing to do some of the work. Sent a list of what I would like done and got a new estimate, with virtually had the same as the first. Only change was to eliminate some insulation. I believe they try to put one over on people."

Todd S on December 2024

REenergizeCO is an approved contractor through Xcel Energy and Efficiency Works that specializes in home energy audits and insulation upgrades that improve the quality and efficiency of existing residential homes along the front range. Properly installed insulation in the attic, walls, crawl space, garage, basement, and air sealing are a few of the services offered. Reach out to schedule an energy audit or a free estimate with one of our BPI-certified technicians.

"The inspection went well. It's after the inspection that is terrible. Telling me that I need these things done to improve the then charging an astronomical amount of money. I was willing to do some of the work. Sent a list of what I would like done and got a new estimate, with virtually had the same as the first. Only change was to eliminate some insulation. I believe they try to put one over on people."

Todd S on December 2024


Avatar for Omni Property Inspections & Environmental
Omni Property Inspections & Environmental
6547 North Academy
4.92(
108
)
Approved Pro
Omni Property Inspections & Environmental
6547 North Academy
4.92(
108
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
11 local quotes requested

Serving Colorado Springs, Omni Home Inspections, LLC is the solution to all of your home inspection needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship, so that the next time service is needed, there will be no question on who to call. Satisfaction guaranteed!

"Darrell was so helpful! He showed us where the problems were in our house and gave us great ideas on how to fix it. We have an older home and our electric bill is expensive. After the audit I can see why. We have a game plan now of where to start. Some of the things we need to fix are simple and inexpensive but will make a great impact. He also told us about rebates both with Excel and the federal government that will make this easier. I highly recommend doing this audit. You get a rebate through Excel for half of the cost"

Alan S on March 2025

Serving Colorado Springs, Omni Home Inspections, LLC is the solution to all of your home inspection needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship, so that the next time service is needed, there will be no question on who to call. Satisfaction guaranteed!

"Darrell was so helpful! He showed us where the problems were in our house and gave us great ideas on how to fix it. We have an older home and our electric bill is expensive. After the audit I can see why. We have a game plan now of where to start. Some of the things we need to fix are simple and inexpensive but will make a great impact. He also told us about rebates both with Excel and the federal government that will make this easier. I highly recommend doing this audit. You get a rebate through Excel for half of the cost"

Alan S on March 2025


Walker Home Comfort
No reviews
Walker Home Comfort
No reviews

We are a local insulation company specializing in home comfort, we offer a wide variety of services from air sealing, blown in fiberglass/ cellulose, fiberglass batts and spray foam! With nearly two decades in the insulation industry our mission is to help homeowners with any budget become more comfortable in their home!

We are a local insulation company specializing in home comfort, we offer a wide variety of services from air sealing, blown in fiberglass/ cellulose, fiberglass batts and spray foam! With nearly two decades in the insulation industry our mission is to help homeowners with any budget become more comfortable in their home!

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Energy efficiency auditing services FAQs

An energy audit costs about $420 on average, ranging from $100 to $2,250, depending on the size of your home, property, location, and the tests the auditor needs to perform. Keep in mind that the 2022 Inflation Reduction Act’s Energy Efficient Home Improvement credit covers up to $150 of home energy audit costs. Common energy audit tests include:

  • Blower door test: $350

  • Duct testing: $100

  • HERS test: $375

  • HERS certification: $200

  • Infrared imaging: $200

To find a reputable energy auditor, find a local company that offers energy audit services. Research the company’s reviews, methods, and certifications to find a reliable professional in your area. The most reputable energy audit companies are HEP-certified by the Building Performance Institute (BPI). Be sure to check our state licensing tool to review the local energy auditor guidelines to ensure you’re hiring a certified professional.

The difference between an energy auditor and a home inspector is primarily in the purpose of the inspection. The energy auditor conducts tests in your home to determine the energy efficiency levels in areas like windows, insulation, and doorways. The auditor then makes recommendations for ways to improve a home’s energy efficiency

A home inspector examines various structures of your home to determine that everything is up to code and gauge the condition of features like the roof, foundation, HVAC, and electrical. The home inspector reports on the overall home and makes repair recommendations.

Typically, a local home energy auditor is responsible for performing energy audits. A home energy auditor will conduct one of three energy audits designed by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) to determine the energy efficiency of your home. The auditor often provides analysis that can help guide changes and improvements to your home for better energy efficiency, giving recommendations as necessary.

The three levels of home energy audits include:

  • Level 1: Review of your energy bills and home for signs of energy inefficiency and areas for improvement. The average cost range is $0.08 to $0.12 per square foot.

  • Level 2: A level 2 ASHRAE energy audit costs $0.12 and $0.35 per square foot. In-depth analysis of your energy usage and provides a report of cost-saving changes.

  • Level 3: Comprehensive analysis and detailed recommendations for ways to improve your home’s energy efficiency. A level 3 audit costs about $0.36 to $0.50 per square foot.

The homeowners guide to energy efficiency auditing services
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