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Verified Reviews for Energy Efficiency Auditing pros in Forest Ranch, CA
*The Angi rating for Energy Efficiency Auditing companies in Forest Ranch, 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 Forest Ranch, 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 12, 2025
Find Energy efficiency auditors in Forest Ranch

Gallaghers Plumbing, Heating & Air Inc.
Gallaghers Plumbing, Heating & Air Inc.
Welcome to Gallagher's Heating, Air Conditioning & Plumbing, where your family's comfort and safety are our top priorities. Whether you need air conditioning service, heating repairs, plumbing solutions, or indoor air quality improvements, you'll be served by one of our "Stand Up Guys" - highly trained professionals you can trust. Every member of our team has completed rigorous technical training, passed comprehensive background checks, and regular drug screening. We take pride in sending only the most qualified, courteous, and reliable technicians to your home. When you choose Gallagher's, you're choosing peace of mind and exceptional service from professionals who treat your home as if it were their own.
Welcome to Gallagher's Heating, Air Conditioning & Plumbing, where your family's comfort and safety are our top priorities. Whether you need air conditioning service, heating repairs, plumbing solutions, or indoor air quality improvements, you'll be served by one of our "Stand Up Guys" - highly trained professionals you can trust. Every member of our team has completed rigorous technical training, passed comprehensive background checks, and regular drug screening. We take pride in sending only the most qualified, courteous, and reliable technicians to your home. When you choose Gallagher's, you're choosing peace of mind and exceptional service from professionals who treat your home as if it were their own.

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
Climate & Energy Solutions
Climate & Energy Solutions
We have evolved into a Home Energy company. We do Home Energy Audits. We participate in State, Federal, Local and PG&E rebate programs. We offer a whole home solution to energy issues including heating, air conditioning, Solar Energy Systems, Insulation, Air Ducting (installation and cleaning), Energy Efficient Windows, Variable Speed Pool Pump, and Tank-less Water Heaters. We provide both service and sales for any brand of equipment. Our technicians are back round checked, professional, courteous and factory trained. Additional phone number - (530) 342-2562. Additional DBAs - Climate Masters Heating and Air Conditioning, Sheraton Services Inc.
We have evolved into a Home Energy company. We do Home Energy Audits. We participate in State, Federal, Local and PG&E rebate programs. We offer a whole home solution to energy issues including heating, air conditioning, Solar Energy Systems, Insulation, Air Ducting (installation and cleaning), Energy Efficient Windows, Variable Speed Pool Pump, and Tank-less Water Heaters. We provide both service and sales for any brand of equipment. Our technicians are back round checked, professional, courteous and factory trained. Additional phone number - (530) 342-2562. Additional DBAs - Climate Masters Heating and Air Conditioning, Sheraton Services Inc.
R B Spencer Inc Heating & Air
R B Spencer Inc Heating & Air
R.B. Spencer Inc installs and maintains heating and air conditioning units (HVAC) for homes and businesses throughout the N. California. Twenty-four hours a day and seven days a week air conditioning and heating repair and installation headquarters in Yuba City California. With a staff of fully trained and certified air conditioning and refrigeration technicians throughout Northern California to better help you. Serving Colusa County, Nevada County, Placer County, Glenn County, Yolo County, Butte County, Sacramento County Yuba County and Sutter County since 1984. Additional email: [email protected]
R.B. Spencer Inc installs and maintains heating and air conditioning units (HVAC) for homes and businesses throughout the N. California. Twenty-four hours a day and seven days a week air conditioning and heating repair and installation headquarters in Yuba City California. With a staff of fully trained and certified air conditioning and refrigeration technicians throughout Northern California to better help you. Serving Colusa County, Nevada County, Placer County, Glenn County, Yolo County, Butte County, Sacramento County Yuba County and Sutter County since 1984. Additional email: [email protected]

Residential Weatherization Inc
Residential Weatherization Inc
RWI is a woman owned small business that has been serving Northern California communities for the last 20 years. Our mission is to improve the quality of life for each individual who crosses our path. In order to accomplish this, we focus on making your home as energy efficient as possible. As an active contractor with PG&E’s Energy Savings assistant program our team constantly receives training and skill improvement with today’s evolving energy conservation practices. Our crews are ISNET Plus certified and we hold an “A+” rating with the BBB.
"Wonderful"
Foster L on May 2022
RWI is a woman owned small business that has been serving Northern California communities for the last 20 years. Our mission is to improve the quality of life for each individual who crosses our path. In order to accomplish this, we focus on making your home as energy efficient as possible. As an active contractor with PG&E’s Energy Savings assistant program our team constantly receives training and skill improvement with today’s evolving energy conservation practices. Our crews are ISNET Plus certified and we hold an “A+” rating with the BBB.
"Wonderful"
Foster L on May 2022

Urban Design
Urban Design
Urban Design is the premier residential, commercial, and agricultural solar contractor in Northern California specializing in custom solar designs and installs. Based in Chico, Urban Design prides itself on being in the forefront of renewable energy and construction projects and offering the latest technologies from Hanwha Q Cells, REC Solar, LG Electronics, Canadian Solar, SolarEdge, and LG Chem. Making the decision to invest in solar is more than just committing to making the world a better place; you’re also making an economically smart decision for you and your family. We will work with you to not only get the most energy efficient system for your home but also to find the best financing as well as state and federal refunds for you! When you go solar you reduce your electrical bills from the second it’s installed and savings will continue to grow as the years flow. From grid-tie solar arrays to off-grid arrays, from roof mount to ground mount, patio covers to carports, Urban Design is here to help find the best solution for you and your home.
Urban Design is the premier residential, commercial, and agricultural solar contractor in Northern California specializing in custom solar designs and installs. Based in Chico, Urban Design prides itself on being in the forefront of renewable energy and construction projects and offering the latest technologies from Hanwha Q Cells, REC Solar, LG Electronics, Canadian Solar, SolarEdge, and LG Chem. Making the decision to invest in solar is more than just committing to making the world a better place; you’re also making an economically smart decision for you and your family. We will work with you to not only get the most energy efficient system for your home but also to find the best financing as well as state and federal refunds for you! When you go solar you reduce your electrical bills from the second it’s installed and savings will continue to grow as the years flow. From grid-tie solar arrays to off-grid arrays, from roof mount to ground mount, patio covers to carports, Urban Design is here to help find the best solution for you and your home.
PowerHouse Solar
PowerHouse Solar
Premier installer of residential solar energy systems in Northern California, since 2003. 20 employees. A+ rating with the Better Business Bureau, member of Shasta Builders Exchange, Redding Chamber of Commerce, fully Bonded & Insured. We are a "Premer Dealer" for SunPower Corp, the world's most efficient solar panel, with the largest market share of solar installations in the U.S., both Commercial & Residential. Certified installer of Fafco swimming pool solar systems.
Premier installer of residential solar energy systems in Northern California, since 2003. 20 employees. A+ rating with the Better Business Bureau, member of Shasta Builders Exchange, Redding Chamber of Commerce, fully Bonded & Insured. We are a "Premer Dealer" for SunPower Corp, the world's most efficient solar panel, with the largest market share of solar installations in the U.S., both Commercial & Residential. Certified installer of Fafco swimming pool solar systems.
Solar Wolf Energy
Solar Wolf Energy
Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!
Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!
Greg's Draft Busters
Greg's Draft Busters
Home and Business infiltration and air quality specialist.
Home and Business infiltration and air quality specialist.
GreenTech Solutions
GreenTech Solutions
Energy efficiency professional. Expert in "Grid Neutral" and "Net Zero" homes.
Energy efficiency professional. Expert in "Grid Neutral" and "Net Zero" homes.
FAQs for energy efficiency auditing projects in Forest Ranch, 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 Forest Ranch, 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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