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  • Verified reviews icon18
    Verified energy efficiency auditing services reviews

Find Energy efficiency auditors in Centennial

Avatar for Ultimate Heating | Cooling | Plumbing | Electric

Ultimate Heating | Cooling | Plumbing | Electric

4.74(
35
)
Approved Pro

Ultimate Heating | Cooling | Plumbing | Electric

4.74(
35
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1999 years of experience

Local Family owned and operated, Ultimate Heating | Cooling | Plumbing | Electric specializes in repairs, installs and maintenance of HVAC, Plumbing and Electric systems in the Denver metro area. Our technicians are trained, licensed, insured and NATE certified. With over 40 years' experience in the industry, Ultimate can help you with any home project including service on any make and model of equipment.

"My furnace had gone out the other day so I called Ultimate. They came out the same day and I’ve been very very pleased with them. They came in the window. They told me they were gonna be here, the technician was very professional, very friendly, and I felt very, very comfortable with him in my home. They fix the issue And the pricing was very fair. I would definitely refer Ultimate to everyone I know."

Leslie C on January 2025

Local Family owned and operated, Ultimate Heating | Cooling | Plumbing | Electric specializes in repairs, installs and maintenance of HVAC, Plumbing and Electric systems in the Denver metro area. Our technicians are trained, licensed, insured and NATE certified. With over 40 years' experience in the industry, Ultimate can help you with any home project including service on any make and model of equipment.

"My furnace had gone out the other day so I called Ultimate. They came out the same day and I’ve been very very pleased with them. They came in the window. They told me they were gonna be here, the technician was very professional, very friendly, and I felt very, very comfortable with him in my home. They fix the issue And the pricing was very fair. I would definitely refer Ultimate to everyone I know."

Leslie C on January 2025


Avatar for REenergizeCO, Inc.

REenergizeCO, Inc.

4.80(
123
)
Approved Pro

REenergizeCO, Inc.

4.80(
123
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
2012 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 Time Plumbing, Heating & Electric INC

Time Plumbing, Heating & Electric INC

4.73(
26
)
Approved Pro

Time Plumbing, Heating & Electric INC

4.73(
26
)
Approved Pro
Customers say: Quick response
1983 years of experience
Emergency services offered

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


"All around good quality work for a good price.."

Jay R on May 2016

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"All around good quality work for a good price.."

Jay R on May 2016


Standard Renewable Energy

3.67(
3
)
Approved Pro

Standard Renewable Energy

3.67(
3
)
Approved Pro
Customers say: Quality work
2006 years of experience
Free onsite estimate

Standard Renewable Energy, provides energy efficiency and renewable energy solutions that help customers lower energy bills, reduce their environmental impact and increase their energy independence.

"They were friendly, honest (so many other contractors outright lie to you), accurate with their bid, prompt with keeping the installation appointment and thorough from the initial contact to the completion of the job. Service rep followed up with an inspection after the job was complete. Only 2 things I could say were slightly annoying were the screws left on the garage floor (but I was expecting some anyway from a previous contractor's work) and the fact that the sales rep did not deliver the rebate forms until it was almost too late to claim the rebate."

Marie J on June 2010

Standard Renewable Energy, provides energy efficiency and renewable energy solutions that help customers lower energy bills, reduce their environmental impact and increase their energy independence.

"They were friendly, honest (so many other contractors outright lie to you), accurate with their bid, prompt with keeping the installation appointment and thorough from the initial contact to the completion of the job. Service rep followed up with an inspection after the job was complete. Only 2 things I could say were slightly annoying were the screws left on the garage floor (but I was expecting some anyway from a previous contractor's work) and the fact that the sales rep did not deliver the rebate forms until it was almost too late to claim the rebate."

Marie J on June 2010


Avatar for Home Performance Solutions LLC

Home Performance Solutions LLC

New on AngiNew on Angi
Approved Pro

Home Performance Solutions LLC

New on AngiNew on Angi
Approved Pro
2001 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.

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.


Bestway Insulation, LLC

New on AngiNew on Angi
Approved Pro

Bestway Insulation, LLC

New on AngiNew on Angi
Approved Pro
1976 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 DMC Services

DMC Services

4.94(
293
)

DMC Services

4.94(
293
)
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Multiple Angieslist Super Service Award Winner. Family owned and operated Business since 2001. Over 25yrs in the HVAC Industry. NATE and EPA Trained Employees. Excel Energy Contractor. Authorized RHEEM Pro Partner Contractor. BBB + Accredited. Full Service Repair/Replacement on all Air Conditioning and Furnaces, Evaporative Coolers, H20 Heaters. Service all major brands. Also install full line of Aprilaire indoor air quality products. Electronic air cleaners, humidifiers. Light commercial work, and Full preventative maintenance contracts. Also install whole house attic fans, roof vents, ceiling fans. Plumbing, Electrical, fireplace service.

"Overall, just a great experience. I had a new air conditioner installed. Les was incredibly knowledgeable and answered all of my questions as well as providing information to care for the air conditioner. He even fixed issues on my furnace from the previous installers shoddy work at no charge. I highly recommend using DMC Services for your HVAC needs."

John C on June 2023

Multiple Angieslist Super Service Award Winner. Family owned and operated Business since 2001. Over 25yrs in the HVAC Industry. NATE and EPA Trained Employees. Excel Energy Contractor. Authorized RHEEM Pro Partner Contractor. BBB + Accredited. Full Service Repair/Replacement on all Air Conditioning and Furnaces, Evaporative Coolers, H20 Heaters. Service all major brands. Also install full line of Aprilaire indoor air quality products. Electronic air cleaners, humidifiers. Light commercial work, and Full preventative maintenance contracts. Also install whole house attic fans, roof vents, ceiling fans. Plumbing, Electrical, fireplace service.

"Overall, just a great experience. I had a new air conditioner installed. Les was incredibly knowledgeable and answered all of my questions as well as providing information to care for the air conditioner. He even fixed issues on my furnace from the previous installers shoddy work at no charge. I highly recommend using DMC Services for your HVAC needs."

John C on June 2023


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


Paradise Heating & Cooling, Inc.

4.82(
240
)

Paradise Heating & Cooling, Inc.

4.82(
240
)
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Currently we are booked until August 15, 2016. Cost is determined by the job. No travel charges. Service fee of $90.00 includes service call and diagnosis of system. Working rate $80/hr billed in 15 minute increments, parts are separate. We do not service Parker, Highlands Ranch, Lone Tree, and Broomfield or areas further out. We are also not servicing anything North of I-70 at this time. Thank you! License #14903 may contact through e-mail.

"On 3/13/19 we woke-up without any heat so I put in a call to Paradise Heating right on the dot of 8:00 and who should answer the phone but John (the owner). He understood my anxiety because there was a big snow storm (and cold temps) about hit all of CO. John scheduled us in right away for a call that morning. The problem turned out to be a quite a tricky one that he was able to figure out ... but ... he was going to have to make a trip downtown to pick up some parts RIGHT AS THE SNOW STORM WAS GATHERING STRENGTH. John gave me a call once he got to the supplier because it took him longer than expected (due to some traffic lights failing) and gave me an update on when he expected to be back at my place. By the time John got back there was already inches of snow onthe roads and it was getting slick, but, John didn't hesitate about continuing with the repair and it was another hour before he had fixed our furnace and he could head home. This was customer service that went beyond what any customer could expect. A big thanks to John!"

Robin W on March 2019

Currently we are booked until August 15, 2016. Cost is determined by the job. No travel charges. Service fee of $90.00 includes service call and diagnosis of system. Working rate $80/hr billed in 15 minute increments, parts are separate. We do not service Parker, Highlands Ranch, Lone Tree, and Broomfield or areas further out. We are also not servicing anything North of I-70 at this time. Thank you! License #14903 may contact through e-mail.

"On 3/13/19 we woke-up without any heat so I put in a call to Paradise Heating right on the dot of 8:00 and who should answer the phone but John (the owner). He understood my anxiety because there was a big snow storm (and cold temps) about hit all of CO. John scheduled us in right away for a call that morning. The problem turned out to be a quite a tricky one that he was able to figure out ... but ... he was going to have to make a trip downtown to pick up some parts RIGHT AS THE SNOW STORM WAS GATHERING STRENGTH. John gave me a call once he got to the supplier because it took him longer than expected (due to some traffic lights failing) and gave me an update on when he expected to be back at my place. By the time John got back there was already inches of snow onthe roads and it was getting slick, but, John didn't hesitate about continuing with the repair and it was another hour before he had fixed our furnace and he could head home. This was customer service that went beyond what any customer could expect. A big thanks to John!"

Robin W on March 2019

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Energy Efficiency Auditing questions, answered by experts

A whole-home humidifier can impact your energy bill positively. In colder months, humidified air feels warmer, allowing you to lower your thermostat without sacrificing comfort. This can lead to energy savings as your heating system works more efficiently. However, it's crucial to use the humidifier judiciously to avoid excessive humidity, which might strain your cooling system in warmer months.

Generator size requirements vary wildly among properties, but typical generator sizes are listed below based on home square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14kW

  • 2,500 sq ft: 12–16kW

  • 3,000 sq ft: 16–20kW+

Unfortunately, home square footage isn’t always a good indicator of generator size requirements. Instead, you should call in a professional to discuss which items in your home you’d like to run via your generator. They can calculate peak and average consumption for those items and then size your generator appropriately for optimal performance.

Expert installation optimizes insulation properties, cutting energy costs and enhancing home comfort year-round.

Leaving vents open but closing doors in unused rooms will probably not save money on your energy bill. Closed doors prevent the natural flow of air throughout the home, which could reduce the efficiency of the overall HVAC system. They could also restrict airflow into and through the return vents, making the HVAC system less efficient.

There are a few ways to reduce your electricity bills if you use window AC units to keep cool. Set the unit temperature at least 1 degree higher than it is currently to reduce costs. Keep the unit clean for it to run efficiently. You may want to hire a window AC specialist near you to inspect the unit once a year and keep it in tip-top shape.

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

From average costs to expert advice, get all the answers you need to get your job done.

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