Top-rated energy efficiency auditors.

Get matched with top energy efficiency auditors in Glendora, CA

Enter your ZIP and get matched with up to 5 pros

Need a pro for your energy efficiency auditing project in Glendora, CA?

Select your specific project to find the pro for you.

Find Energy efficiency auditors in Glendora

Avatar for Global Green Solutions

Global Green Solutions

5.00(
110
)
Approved Pro

Global Green Solutions

5.00(
110
)
Approved Pro
Customers say: Quick response
2005 years of experience
Free onsite estimate

Whether you need an A/C or Heater installation or repair in Los Angeles, our team of HVAC pros is here to deliver outstanding service. We're passionate about delivering an exceptional heating and air conditioning experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. We're committed to serving you with quality and great value. We'll come to you, listen to your needs, and then come back to you with a logical, feasible plan that works for you. Our first-time customers continually become our long-term customers time and time again, choosing us for all the heating, AC, air ducts needs. Contact us today and see what our commitment to quality is all about! We may not be related, but you'll feel like we're family. We Service Los Angeles and surrounding areas. Call us today for a free estimate!

"Fantastic job from the very first phone call. The team was prompt, knowledgeable, and respectful of our home. They restored our heating quickly and checked everything twice. Excellent service all around ? highly recommend!"

Artur K on December 2025

Whether you need an A/C or Heater installation or repair in Los Angeles, our team of HVAC pros is here to deliver outstanding service. We're passionate about delivering an exceptional heating and air conditioning experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. We're committed to serving you with quality and great value. We'll come to you, listen to your needs, and then come back to you with a logical, feasible plan that works for you. Our first-time customers continually become our long-term customers time and time again, choosing us for all the heating, AC, air ducts needs. Contact us today and see what our commitment to quality is all about! We may not be related, but you'll feel like we're family. We Service Los Angeles and surrounding areas. Call us today for a free estimate!

"Fantastic job from the very first phone call. The team was prompt, knowledgeable, and respectful of our home. They restored our heating quickly and checked everything twice. Excellent service all around ? highly recommend!"

Artur K on December 2025


Avatar for Prosper Construction Development, Inc.

Prosper Construction Development, Inc.

4.88(
38
)
Approved Pro

Prosper Construction Development, Inc.

4.88(
38
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
2013 years of experience

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Fast response and clear communication throughout the process."

Marco T on April 2025

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Fast response and clear communication throughout the process."

Marco T on April 2025


Eskimo Air

4.60(
5
)
Approved Pro

Eskimo Air

4.60(
5
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1996 years of experience

Eskimo Air Is Celebrating 30 Years In Business . No job Is To Big Or Small We Do It All Sales Service Installations Please Call 626-945-7930 ESKIMO AIR CONDITIONING IS DEDICATED TO PROVIDING THE BEST POSSIBLE SOLUTION FOR YOUR HOME OR BUSINESS. YOU CAN COUNT ON US TO PROVIDE YOU WITH A SYSTEM AND SOLUTION THAT FITS YOUR UNIQUE NEEDS AND SINCE WE'VE INSTALLED MANY SYSTEMS IN THIS AREA, WE'VE EARNED A REPUTATION FOR DOING THE JOB RIGHT THE FIRST TIME.

"Repairman didn't clean up after this one"

Norma H on October 2024

Eskimo Air Is Celebrating 30 Years In Business . No job Is To Big Or Small We Do It All Sales Service Installations Please Call 626-945-7930 ESKIMO AIR CONDITIONING IS DEDICATED TO PROVIDING THE BEST POSSIBLE SOLUTION FOR YOUR HOME OR BUSINESS. YOU CAN COUNT ON US TO PROVIDE YOU WITH A SYSTEM AND SOLUTION THAT FITS YOUR UNIQUE NEEDS AND SINCE WE'VE INSTALLED MANY SYSTEMS IN THIS AREA, WE'VE EARNED A REPUTATION FOR DOING THE JOB RIGHT THE FIRST TIME.

"Repairman didn't clean up after this one"

Norma H on October 2024


Avatar for Isrey Home Inspection

Isrey Home Inspection

New on AngiNew on Angi
Approved Pro

Isrey Home Inspection

New on AngiNew on Angi
Approved Pro
2008 years of experience
Free onsite estimate

Isrey Home Inspection is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

Isrey Home Inspection is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!


Avatar for JO Solar Designs

JO Solar Designs

New on AngiNew on Angi
Approved Pro

JO Solar Designs

New on AngiNew on Angi
Approved Pro
2018 years of experience
Free onsite estimate

JO Solar Designs is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

JO Solar Designs is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.


Solar Energy - Unlicensed Contractor

New on AngiNew on Angi
Approved Pro

Solar Energy - Unlicensed Contractor

New on AngiNew on Angi
Approved Pro
2021 years of experience
Free onsite estimate

Empowered Solutions is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Empowered Solutions is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.


Avatar for E.Z. Energy Solutions

E.Z. Energy Solutions

3.90(
10
)

E.Z. Energy Solutions

3.90(
10
)
Customers say: Quality work
2008 years of experience

One of Southern California's favorite Solar Energy Expert and Home Improvement/ Remodeling Contractor in Southern California! We provide you with clean, efficient and affordable solutions customized to your needs. Our highly skilled technicians will be with you throughout the entire process to help you secure your Energy Future and Home Remodeling dreams! When you decide to go solar or remodel part or all of your home or commercial project, you need a team you can trust to create top-quality work, with consistent communication and a great reputation E.Z. Energy Solutions has worked hard since our founding in 2008 to become the company we are today! Services include Solar Panels, Home Solar, Commercial Solar, Insulation, Solar Electric, Solar Panel Installation, Complete Residential and Commercial Remodeling, Kitchen Remodeling, Bathroom Remodeling, Custom Accessory Dwelling Unit, Garage Conversion and Addition, Room Addition, Interior and Exterior Paint, Roofing, Solar Panel Installation, Repair, Maintenance, Energy Efficiency Consultations and Products, AC;

"My panels haven’t work for the last 8 months And I’m paying for them and paying Edison for electricity., we all could have mistakes but I think 8 months is just ridiculous time very very frustrated I don’t know what to do anymore"

Oscar L on September 2022

One of Southern California's favorite Solar Energy Expert and Home Improvement/ Remodeling Contractor in Southern California! We provide you with clean, efficient and affordable solutions customized to your needs. Our highly skilled technicians will be with you throughout the entire process to help you secure your Energy Future and Home Remodeling dreams! When you decide to go solar or remodel part or all of your home or commercial project, you need a team you can trust to create top-quality work, with consistent communication and a great reputation E.Z. Energy Solutions has worked hard since our founding in 2008 to become the company we are today! Services include Solar Panels, Home Solar, Commercial Solar, Insulation, Solar Electric, Solar Panel Installation, Complete Residential and Commercial Remodeling, Kitchen Remodeling, Bathroom Remodeling, Custom Accessory Dwelling Unit, Garage Conversion and Addition, Room Addition, Interior and Exterior Paint, Roofing, Solar Panel Installation, Repair, Maintenance, Energy Efficiency Consultations and Products, AC;

"My panels haven’t work for the last 8 months And I’m paying for them and paying Edison for electricity., we all could have mistakes but I think 8 months is just ridiculous time very very frustrated I don’t know what to do anymore"

Oscar L on September 2022


Avatar for Sunlux Energy

Sunlux Energy

4.92(
107
)

Sunlux Energy

4.92(
107
)
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

Sunlux is a roofing and solar energy provider servicing southern California that provides a variety of options in order to help you find what best fits your needs. We deliver the tools, support and advice you need to make going solar simple. We handle everything from paperwork to maintenance, so all you have to worry about is what to do with the savings. We guarantee installation, parts and maintenance for every job. Your satisfaction is our top priority and we’ll be here for you through every step of your solar and roofing journey. Ready to talk to our team? Please call us today!

"We were in the market for a solar system from a company that was reliable and we could trust. After doing lots of research we asked Sunlux to be our solar provider. They were very honest with their prices (they were on one of the lowest) and their customer service has been excellent? Since we did not know a lot about solar systems, they educated us to be smart consumers and gave us options and choices that met our needs. We can truly say, we are very happy with Sunlux and would recommend them to others as well."

Kevin B on February 2020

Sunlux is a roofing and solar energy provider servicing southern California that provides a variety of options in order to help you find what best fits your needs. We deliver the tools, support and advice you need to make going solar simple. We handle everything from paperwork to maintenance, so all you have to worry about is what to do with the savings. We guarantee installation, parts and maintenance for every job. Your satisfaction is our top priority and we’ll be here for you through every step of your solar and roofing journey. Ready to talk to our team? Please call us today!

"We were in the market for a solar system from a company that was reliable and we could trust. After doing lots of research we asked Sunlux to be our solar provider. They were very honest with their prices (they were on one of the lowest) and their customer service has been excellent? Since we did not know a lot about solar systems, they educated us to be smart consumers and gave us options and choices that met our needs. We can truly say, we are very happy with Sunlux and would recommend them to others as well."

Kevin B on February 2020


Home Performance Matters Inc

4.89(
66
)

Home Performance Matters Inc

4.89(
66
)
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

About us: We are a fully integrated Home Performance Contractor based in Upland, California.HPM provides BPI-certified energy audits, custom energy designs, and complete energy retrofit services including: insulation, HVAC and duct replacement, lighting and baseload consultations, and solar panel installation. Mission: Your Full-Service Energy Efficiency and Solar Experts. Goals with every project: * Clients become friends and begin to share our passion for sustainable energy * We make a positive impact on the level of neighborhood, community, and planet * We demonstrate professionalism, integrity, and quality that produces raving fans and collaborators

"First, we had a consultation with Jim, who was very thorough and honest about all the options available. The crew were punctual and very considerate, making sure everything was covered in plastic to keep things clean. There were A LOT OF rocks and debris in the attic (apparently the roof used to be flat concrete). So, it took them all day instead of half the day to finish the work. I feel so bad for the crew, and they were still so nice."

JITTIMA J on April 2018

About us: We are a fully integrated Home Performance Contractor based in Upland, California.HPM provides BPI-certified energy audits, custom energy designs, and complete energy retrofit services including: insulation, HVAC and duct replacement, lighting and baseload consultations, and solar panel installation. Mission: Your Full-Service Energy Efficiency and Solar Experts. Goals with every project: * Clients become friends and begin to share our passion for sustainable energy * We make a positive impact on the level of neighborhood, community, and planet * We demonstrate professionalism, integrity, and quality that produces raving fans and collaborators

"First, we had a consultation with Jim, who was very thorough and honest about all the options available. The crew were punctual and very considerate, making sure everything was covered in plastic to keep things clean. There were A LOT OF rocks and debris in the attic (apparently the roof used to be flat concrete). So, it took them all day instead of half the day to finish the work. I feel so bad for the crew, and they were still so nice."

JITTIMA J on April 2018


Avatar for HERS Rater LA/HouseSmart Green Solutions

HERS Rater LA/HouseSmart Green Solutions

5.00(
24
)

HERS Rater LA/HouseSmart Green Solutions

5.00(
24
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

HERS Rater LA provides quick, efficient and reasonably priced HERS (Home Energy Rating System [Title-24] field verifications for heating, ventilating and air conditioning (HVAC) systems in both residences and light commercial buildings. HERS Rater LA is certified to perform field verifications on new construction and additions. We also provide Air Balancing for new and redesigned duct systems in residential and commercial buildings.

"Dav is clearly an EXPERT in what he does. He imparted a TON of valuable information and knowledge to my husband and I both DURING our Home Energy Audit, as well as in the report which we opted to have him do. This information is going to be a superb guide as we prioritize & move forward with home improvement projects that will increase our home's efficiency, conserve energy, etc."

Dana B on May 2019

HERS Rater LA provides quick, efficient and reasonably priced HERS (Home Energy Rating System [Title-24] field verifications for heating, ventilating and air conditioning (HVAC) systems in both residences and light commercial buildings. HERS Rater LA is certified to perform field verifications on new construction and additions. We also provide Air Balancing for new and redesigned duct systems in residential and commercial buildings.

"Dav is clearly an EXPERT in what he does. He imparted a TON of valuable information and knowledge to my husband and I both DURING our Home Energy Audit, as well as in the report which we opted to have him do. This information is going to be a superb guide as we prioritize & move forward with home improvement projects that will increase our home's efficiency, conserve energy, etc."

Dana B on May 2019

...
Showing 1-10 of 210
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.

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.

A small sump pump running infrequently uses an average of 10 kilowatt-hours (kWh) of electricity per month. The average cost for electricity is $0.171 per kWh. The size and use frequency affect how much electricity it uses. Sump pumps average one-third to one horsepower (hp) motors. One hp is equal to 745.7 watts. Watts multiplied by the time your pump is running divided by 1,000 equals your average kWh. Multiply kWh by your average cost of electricity. In areas with high rain or a marsh basin, the average cost can be as high as $15-$25 a month.

Blower door tests are measured in a few different ways, but the most popular are air changes per hour (ACH) and cubic feet of air (CFM) moving through the house per hour. A good ACH score is less than 2ACH, but 1ACH is better. This means the house experiences a total air change within 60 minutes (for 1ACH). For 2ACH, there’s a complete change every 30 minutes, and so on. CFM scores are similar in that a lower score means less air change, and therefore less leakage.

Wood windows fall in the middle of the window frame materials when it comes to energy efficiency. They’re more insulating than aluminum and vinyl, but they aren’t as efficient as fiberglass or composite frames. If you love the look and lifespan of wood windows and want to maximize efficiency, you can upgrade to double-pane or triple-pane glass and consider window tinting and low-emissivity (low-E) coatings to minimize heat transfer.

The Glendora, CA homeowners’ guide to energy efficiency auditing services

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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"