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Verified Reviews for Energy Efficiency Auditing pros in Woodbridge, CA
*The Angi rating for Energy Efficiency Auditing companies in Woodbridge, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.
*The HomeAdvisor rating for Energy Efficiency Auditing companies in Woodbridge, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.
Last update on December 13, 2025
Find Energy efficiency auditors in Woodbridge

Prosper Construction Development, Inc.
Prosper Construction Development, Inc.
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

Apollo Energies
Apollo Energies
We are independent energy consultants who reduced our own energy use and saved several hundreds of dollars monthly on our utility bill and made our homes more comfortable and now are helping others achieve similar results. We are not contractors. We do not get paid based on the recommendations we make or the recommendations you choose to do. We want to provide you with what you need to do, explain why you need to do it so that you have all the information you need to make an informed decision. Once you've made the decision on what you want to do, after having all the information necessary to make an informed decision, we will help you implement your decision. We have vetted many home performance contractors and we know they will do the quality work you want and deserve. There are PGE rebates available and financing available that we will show you how to leverage to your advantage. So give us a try. You'll be glad you did.
"Apollo did a fine job assessing my townhomes energy needs. The energy report covered what I needed."
Motiejus R on June 2019
We are independent energy consultants who reduced our own energy use and saved several hundreds of dollars monthly on our utility bill and made our homes more comfortable and now are helping others achieve similar results. We are not contractors. We do not get paid based on the recommendations we make or the recommendations you choose to do. We want to provide you with what you need to do, explain why you need to do it so that you have all the information you need to make an informed decision. Once you've made the decision on what you want to do, after having all the information necessary to make an informed decision, we will help you implement your decision. We have vetted many home performance contractors and we know they will do the quality work you want and deserve. There are PGE rebates available and financing available that we will show you how to leverage to your advantage. So give us a try. You'll be glad you did.
"Apollo did a fine job assessing my townhomes energy needs. The energy report covered what I needed."
Motiejus R on June 2019
Pinnacle Energy Solutions-Unlicensed Contractor
Pinnacle Energy Solutions-Unlicensed Contractor
Pinnacle Energy Solutions has become a staple of professionalism and quality work in San Ramon for years. With decades of experience, there is no job too large or small. Call today to schedule an appointment!
"The thing I appreciate with Steven is, there is no sales pitch! He paired us with best options we have and he always gets back and answers any questions we have to me! Just great!"
Greg N on August 2021
Pinnacle Energy Solutions has become a staple of professionalism and quality work in San Ramon for years. With decades of experience, there is no job too large or small. Call today to schedule an appointment!
"The thing I appreciate with Steven is, there is no sales pitch! He paired us with best options we have and he always gets back and answers any questions we have to me! Just great!"
Greg N on August 2021

California Energy Consultant Service
California Energy Consultant Service
California Energy Consultant Service is one of the largest door and window replacement companies in Sacramento, CA. We cater to all your needs and concerns by offering you superior quality windows and doors. Choose the best from our wide selection of Sacramento windows, doors and siding to give your existing residential or commercial space a new and improved look. Our foundation is based on honesty, integrity, and the commitment to a job worthy of repeat business and referrals. We strive to serve all our clients with the finest quality replacement doors, windows and siding. At California Energy Consultant Service, we understand your requirements and guarantee 100% customer satisfaction. By installing our stylish and ergonomically viable windows and doors, you can drastically improve the appearance of your home or office. We take pride in being the best window replacement company in Sacramento, helping you to increase your property value and save money on your energy costs. Here at California Energy Consultant Service, we have been providing outstanding products and services to the Sacramento area for nearly 30 years. Our highly skilled professional staff is dedicated to matching the right products to your needs, and making sure that the job is done on time and on budget. We are highly committed to helping our customers get the best possible services so that they get value for their hard-earned money. It is our firm belief that our customers are our most important assets, and that’s why we look forward to building a long-term relationship with you. We are proud to say that our client base is full of referrals and repeat business. For years, we have consistently maintained an excellent reputation in the Sacramento door and window replacement industry, and we continue to deliver highly dependable products and services. California Energy Consultant Service - Address: 11367 Trade Center Dr Ste 115, Rancho Cordova, CA 95742 Tel: (916) 852-8132
"Excellent experience with this company. They lent us a portable air conditioner while we waited for our new air conditioner to be installed. They helped us with financing the new system. All the service employees were helpful, friendly, and knowledgeable. They even came out to help us after the office was closed. I fully recommend their company."
Melisa G on September 2019
California Energy Consultant Service is one of the largest door and window replacement companies in Sacramento, CA. We cater to all your needs and concerns by offering you superior quality windows and doors. Choose the best from our wide selection of Sacramento windows, doors and siding to give your existing residential or commercial space a new and improved look. Our foundation is based on honesty, integrity, and the commitment to a job worthy of repeat business and referrals. We strive to serve all our clients with the finest quality replacement doors, windows and siding. At California Energy Consultant Service, we understand your requirements and guarantee 100% customer satisfaction. By installing our stylish and ergonomically viable windows and doors, you can drastically improve the appearance of your home or office. We take pride in being the best window replacement company in Sacramento, helping you to increase your property value and save money on your energy costs. Here at California Energy Consultant Service, we have been providing outstanding products and services to the Sacramento area for nearly 30 years. Our highly skilled professional staff is dedicated to matching the right products to your needs, and making sure that the job is done on time and on budget. We are highly committed to helping our customers get the best possible services so that they get value for their hard-earned money. It is our firm belief that our customers are our most important assets, and that’s why we look forward to building a long-term relationship with you. We are proud to say that our client base is full of referrals and repeat business. For years, we have consistently maintained an excellent reputation in the Sacramento door and window replacement industry, and we continue to deliver highly dependable products and services. California Energy Consultant Service - Address: 11367 Trade Center Dr Ste 115, Rancho Cordova, CA 95742 Tel: (916) 852-8132
"Excellent experience with this company. They lent us a portable air conditioner while we waited for our new air conditioner to be installed. They helped us with financing the new system. All the service employees were helpful, friendly, and knowledgeable. They even came out to help us after the office was closed. I fully recommend their company."
Melisa G on September 2019

Capital City Solar
Capital City Solar
Capital City Solar has the experience and passion to deliver results in Northern California. We aim to make every experience for our individual homeowners and commercial clients memorable. Making the decision to rely on solar energy will be the best decision you’ve ever made. Turn Key Solutions: We do it all so you don’t have to. Leading Elite Dealer for SunPower Flexible financing solutions. Our experience and knowledge means we deliver the best solar solution for you. Professional quality installation on time and on budget with over 50 years of combined experience as solar electrical contractors, Capital City Solar has established a company with an emphasis on customer service. We install only the highest quality products - ones that make a difference for the environment and that work toward a cause which makes economic sense. We design, permit, install and stand behind the warranties of all the systems we build and we do not sub-contract any of our jobs. We live and breathe clean energy to stay on top of our game and provide our customers with the latest in solar technology. What makes us qualified? North American Board of Certified Energy Practitioners NABCEP Certified Solar PV Installer & C-10 electrical contractor. Award winning.
"They were great. Took 2 days and they installed 29 panels. Crew was great. We would have them back again if we needed them. I have an app to monitor the system. SMUD bill is now $20. and that is the charge to stay attached to the grid which is a must."
Linda D on December 2019
Capital City Solar has the experience and passion to deliver results in Northern California. We aim to make every experience for our individual homeowners and commercial clients memorable. Making the decision to rely on solar energy will be the best decision you’ve ever made. Turn Key Solutions: We do it all so you don’t have to. Leading Elite Dealer for SunPower Flexible financing solutions. Our experience and knowledge means we deliver the best solar solution for you. Professional quality installation on time and on budget with over 50 years of combined experience as solar electrical contractors, Capital City Solar has established a company with an emphasis on customer service. We install only the highest quality products - ones that make a difference for the environment and that work toward a cause which makes economic sense. We design, permit, install and stand behind the warranties of all the systems we build and we do not sub-contract any of our jobs. We live and breathe clean energy to stay on top of our game and provide our customers with the latest in solar technology. What makes us qualified? North American Board of Certified Energy Practitioners NABCEP Certified Solar PV Installer & C-10 electrical contractor. Award winning.
"They were great. Took 2 days and they installed 29 panels. Crew was great. We would have them back again if we needed them. I have an app to monitor the system. SMUD bill is now $20. and that is the charge to stay attached to the grid which is a must."
Linda D on December 2019

NRG Clean Power
NRG Clean Power
NRG Clean Power is California’s leading clean power provider. We leverage over 30 years of superior customer service installing solar from the south of San Diego to the northern border with Oregon. In other words, regardless of where you are in California, we can help you make the switch to solar! Not only do we offer top-tier solar services, we are also a total home performance company, devoted to sustainability and energy efficiency. We offer fully customized home and business solar installations with battery backup capabilities. We do not service solar systems that we did not install. We believe the future is clean, renewable energy and with your help we are committed to creating it together. Customer satisfaction is a crucial aspect and the cornerstone of our business. As a result, we have earned the prestigious Diamond Certification 4 years in a row, along with the 2019 Angie’s List Super Service Award. NRG Clean Power offers the finest solar products at the best rates with finance options for everyone. We will be with you every step of the way and for years to come. Check out our promos to take advantage of our best deals. And ask about our Referral Program that allows customers like you to earn cash bonuses for referring friends and family!
"No doubt they hire great installation people, but their communication and honoring their quotes has little to be desired. I will elaborate. I was given a quote, left on my voicemail. I responded the next day letting NRG know I accepted their quote. 1 week later I received a phone call telling me they wouldn't honor the quote give, and they cited the reasons as Tarif's. This was back in April 2025. I still went with NRG, albeit at a$1000.00 increase. The second reason I wouldn't recommend this company, and this for me is the final straw, after installing my solar NRG didn't let me know I needed to have an ESR release, in layman's terms this is necessary for your power company to accept your new solar system. I found out this information when they contacted me in August 2025. NEG blamed the company who upgraded my Electrical Panel. NRG INSTALLED MY SOLAR AFTER THE PANEL WAS UPGRADED. Since this company doesn't communicate with its clients I would say go with another company."
Daniel S on August 2025
NRG Clean Power is California’s leading clean power provider. We leverage over 30 years of superior customer service installing solar from the south of San Diego to the northern border with Oregon. In other words, regardless of where you are in California, we can help you make the switch to solar! Not only do we offer top-tier solar services, we are also a total home performance company, devoted to sustainability and energy efficiency. We offer fully customized home and business solar installations with battery backup capabilities. We do not service solar systems that we did not install. We believe the future is clean, renewable energy and with your help we are committed to creating it together. Customer satisfaction is a crucial aspect and the cornerstone of our business. As a result, we have earned the prestigious Diamond Certification 4 years in a row, along with the 2019 Angie’s List Super Service Award. NRG Clean Power offers the finest solar products at the best rates with finance options for everyone. We will be with you every step of the way and for years to come. Check out our promos to take advantage of our best deals. And ask about our Referral Program that allows customers like you to earn cash bonuses for referring friends and family!
"No doubt they hire great installation people, but their communication and honoring their quotes has little to be desired. I will elaborate. I was given a quote, left on my voicemail. I responded the next day letting NRG know I accepted their quote. 1 week later I received a phone call telling me they wouldn't honor the quote give, and they cited the reasons as Tarif's. This was back in April 2025. I still went with NRG, albeit at a$1000.00 increase. The second reason I wouldn't recommend this company, and this for me is the final straw, after installing my solar NRG didn't let me know I needed to have an ESR release, in layman's terms this is necessary for your power company to accept your new solar system. I found out this information when they contacted me in August 2025. NEG blamed the company who upgraded my Electrical Panel. NRG INSTALLED MY SOLAR AFTER THE PANEL WAS UPGRADED. Since this company doesn't communicate with its clients I would say go with another company."
Daniel S on August 2025

McDonald Plumbing Heating & Air Inc
McDonald Plumbing Heating & Air Inc
McDonald Plumbing, Heating & Air Condition, Inc. offers plumbing, HVAC, solar and home energy solutions for existing home owners and light commercial building owners. This includes smaller repairs and services like drain cleaning to upgrading complete plumbing and Heating and Air systems. As an approved contractor under the Energy Upgrade Program and in cooperation with SMUD and PGE, we provide our customers with energy audits and energy improvements so they can save on utility bills and receive utility rebates and financing.
"Jeremy was professional. He performed the necessary tasks and was very polite. He left the work area very clean. Very satisfied."
Donald C on October 2019
McDonald Plumbing, Heating & Air Condition, Inc. offers plumbing, HVAC, solar and home energy solutions for existing home owners and light commercial building owners. This includes smaller repairs and services like drain cleaning to upgrading complete plumbing and Heating and Air systems. As an approved contractor under the Energy Upgrade Program and in cooperation with SMUD and PGE, we provide our customers with energy audits and energy improvements so they can save on utility bills and receive utility rebates and financing.
"Jeremy was professional. He performed the necessary tasks and was very polite. He left the work area very clean. Very satisfied."
Donald C on October 2019

EcoAttics Energy Saving Solutions
EcoAttics Energy Saving Solutions
Our solutions are guaranteed to cut costs and improve your comfort. One of these solutions is radiant barrier. While many homes already have insulation installed, radiant barrier provides industry-leading technology that will protect your house from extreme temperatures. Additional email - [email protected].
Our solutions are guaranteed to cut costs and improve your comfort. One of these solutions is radiant barrier. While many homes already have insulation installed, radiant barrier provides industry-leading technology that will protect your house from extreme temperatures. Additional email - [email protected].

ROMANO HVAC and Electrical Inc
ROMANO HVAC and Electrical Inc
HVAC and Electrical Professionals Please mention if you are: Senior or L.E. OWNER Builder assistance - INTUITIVE CONSULTING and Design - Code Review Heating - Cooling - Electrical Repair HVAC Maintenance Plans - for your connivence SERVICE Repair appointments available 7am-7pm 7 days week at same fair Flat Rates! - Mention Angieslist and SAVE! Locally owned and operated Heating and Air Conditioning Company. honesty integrity and commitment Air Conditioner Tune UPS Maintenance Plans and Inspections Call ROMANO - - AC Tune Up will $AVE YOUR MONEY! Call Now and SAVE with ROMANO YOU WILL NOT BE DISAPPOINTED North Sacramento - Carmicahel - Arden Arcade - Citrus Heights - Fair Oaks- Folsom - El Dorado Hills - Granite Bay - Rescue - Cameron Park - Gold River - Orangevale - Roseville - Rocklin - Lincoln - Loomis - Auburn - Mather - Rancho Cordova - West Sacramento
"Romano was amazing getting an engineer out same day to identify the issue and get parts ordered. Will try to use them again as much as possible in the future."
Mike M on February 2019
HVAC and Electrical Professionals Please mention if you are: Senior or L.E. OWNER Builder assistance - INTUITIVE CONSULTING and Design - Code Review Heating - Cooling - Electrical Repair HVAC Maintenance Plans - for your connivence SERVICE Repair appointments available 7am-7pm 7 days week at same fair Flat Rates! - Mention Angieslist and SAVE! Locally owned and operated Heating and Air Conditioning Company. honesty integrity and commitment Air Conditioner Tune UPS Maintenance Plans and Inspections Call ROMANO - - AC Tune Up will $AVE YOUR MONEY! Call Now and SAVE with ROMANO YOU WILL NOT BE DISAPPOINTED North Sacramento - Carmicahel - Arden Arcade - Citrus Heights - Fair Oaks- Folsom - El Dorado Hills - Granite Bay - Rescue - Cameron Park - Gold River - Orangevale - Roseville - Rocklin - Lincoln - Loomis - Auburn - Mather - Rancho Cordova - West Sacramento
"Romano was amazing getting an engineer out same day to identify the issue and get parts ordered. Will try to use them again as much as possible in the future."
Mike M on February 2019

GRIFFIN ELECTRIC INC
GRIFFIN ELECTRIC INC
Griffin Electric Inc.
Griffin Electric Inc.
FAQs for energy efficiency auditing projects in Woodbridge, CA
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
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.
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 Woodbridge, 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.
•Discover the average home energy audit cost, what impacts pricing, and how to save money on your audit. Get transparent, expert-backed cost info for homeowners.

A home energy audit is a detailed write-up of how to lower your utility bills and increase your comfort level. Find out if they’re worth the cost.
•Get a detailed breakdown of thermal imaging home inspection costs, including average prices, cost factors, and tips to help homeowners budget.

Home energy audits can identify ways to make your home more energy-efficient. Learn whether an energy audit is a good investment for your home.
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