Get matched with top energy efficiency auditors in San Antonio, TX
There are 6 highly-rated local energy efficiency auditors.
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12 Verified Reviews for Energy Efficiency Auditing pros in San Antonio, TX
*The Angi rating for Energy Efficiency Auditing companies in San Antonio, TX 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 San Antonio, TX 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 July 16, 2025
Energy efficiency auditors in San Antonio
Small business specializing in electric energy and solar energy installations.
Small business specializing in electric energy and solar energy installations.
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!
"I had a very positive experience with NRG during the sales process: the people I spoke to were knowledgeable, easy to talk to, and quick to follow up with answers to my questions. That changed as soon as we signed the contract and paid our deposit. Communication became sporadic at best, with each step of the process taking much longer--in some cases many months longer--than what I was told during the sales process. To be fair, there were external factors that contributed to the delays. Our project involves installing new roofing, and apparently several roofing contractors are still backed up after the winter storms in early 2023. But that doesn't explain or excuse the near-total lack of communication or the apparent lack of interest in moving our project forward. It has consistently been a struggle to get even the most basic details from NRG, and I've had to follow up every few weeks just to see if anyone is still working on our project. I can't speak to the quality of their work because no work has been done, or even scheduled, more than seven months after signing. I strongly recommend against working with NRG."
Matt K on June 2023
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!
"I had a very positive experience with NRG during the sales process: the people I spoke to were knowledgeable, easy to talk to, and quick to follow up with answers to my questions. That changed as soon as we signed the contract and paid our deposit. Communication became sporadic at best, with each step of the process taking much longer--in some cases many months longer--than what I was told during the sales process. To be fair, there were external factors that contributed to the delays. Our project involves installing new roofing, and apparently several roofing contractors are still backed up after the winter storms in early 2023. But that doesn't explain or excuse the near-total lack of communication or the apparent lack of interest in moving our project forward. It has consistently been a struggle to get even the most basic details from NRG, and I've had to follow up every few weeks just to see if anyone is still working on our project. I can't speak to the quality of their work because no work has been done, or even scheduled, more than seven months after signing. I strongly recommend against working with NRG."
Matt K on June 2023
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!
We are a family owned business that is growing steadily. We provide 24/7 electrical service calls, we accept all major credit cards, money orders, checks and cash. We can assist and prepare your Federal Government Energy Rebate Program package and help maximize and expedite your rebate check.
We are a family owned business that is growing steadily. We provide 24/7 electrical service calls, we accept all major credit cards, money orders, checks and cash. We can assist and prepare your Federal Government Energy Rebate Program package and help maximize and expedite your rebate check.
Specializing in Solar PV Electricity, Solar Hot Water, and Solar Pool Heating, our unequaled product line and expertise have taken us from humble beginnings to become the largest solar installation and integration company in the Eastern United States. And, we are quickly becoming America's solar solution by leveraging our solar installation heritage that dates back to 1992. Whether you desire to switch a hotel or your home to renewable solar power, SolarTEK Energy is your single source solar company and solar Installers.
Specializing in Solar PV Electricity, Solar Hot Water, and Solar Pool Heating, our unequaled product line and expertise have taken us from humble beginnings to become the largest solar installation and integration company in the Eastern United States. And, we are quickly becoming America's solar solution by leveraging our solar installation heritage that dates back to 1992. Whether you desire to switch a hotel or your home to renewable solar power, SolarTEK Energy is your single source solar company and solar Installers.
**Please visit our website to see ways in which our services can help with indoor air quality, comfort in your home and energy efficiency. Poor indoor air quality has been linked to respiratory issues such as asthma, sleep apnea and allergies.*** Indoor Air Quality of Texas specializes in sealing Air-conditioning duct work. Aeroseal seals duct work from the inside which is ideal for inaccessible ductwork and we are able to reduce duct leakage to lower levels than traditional hand sealing methods. Sealing duct work improves indoor air quality, comfort and efficiency.
"Sean (the owner) and Jeff were by far the most professional contractors we've ever had in our home. They went above and beyond on design, documentation and cleaning. The work speaks for itself, we had air flow issues in our 1961 ranch home with original metal ducts. Major leak in one area due to a previous contractor (assumption) falling on the duct and the insulation was worn off / torn. Basically, we were cooling attic air... and getting who knows what into our system. Sean went into our attic within a couple of days of our call, took pictures and walked us through exactly what he planned to do. Carefully covering all registers, and the floor pathways with drop cloths, and the beds, then cleaning the ducts, fixing the damage in the attic, replacing all insulation to double thickness of what it was, cleaning out the entire HVAC closet, resealing it, adding sound boards to reduce the noise of our giant 11 year old system... and then the lovely Aeroseal to close up any remaining gaps. Picture perfect. And they cleaned so much with a handheld Dyson! Seriously. Our house looked perfect when they were done. Sean emailed us documentation and pictures with all data points and graphs provided, plus a certificate of completion. So much value. I can't wait to see the reduction in our bills going forward - and avoid replacing our system for a few more years :) My husband asked Sean when we should get the ducts cleaned again; he said we're probably OK not to unless we have major construction. What? Amazing. Such an honest professional. Best decision. Best experience. Call them now before getting yet another so-so HVAC "maintenance" job done..."
Chauncy F on August 2018
**Please visit our website to see ways in which our services can help with indoor air quality, comfort in your home and energy efficiency. Poor indoor air quality has been linked to respiratory issues such as asthma, sleep apnea and allergies.*** Indoor Air Quality of Texas specializes in sealing Air-conditioning duct work. Aeroseal seals duct work from the inside which is ideal for inaccessible ductwork and we are able to reduce duct leakage to lower levels than traditional hand sealing methods. Sealing duct work improves indoor air quality, comfort and efficiency.
"Sean (the owner) and Jeff were by far the most professional contractors we've ever had in our home. They went above and beyond on design, documentation and cleaning. The work speaks for itself, we had air flow issues in our 1961 ranch home with original metal ducts. Major leak in one area due to a previous contractor (assumption) falling on the duct and the insulation was worn off / torn. Basically, we were cooling attic air... and getting who knows what into our system. Sean went into our attic within a couple of days of our call, took pictures and walked us through exactly what he planned to do. Carefully covering all registers, and the floor pathways with drop cloths, and the beds, then cleaning the ducts, fixing the damage in the attic, replacing all insulation to double thickness of what it was, cleaning out the entire HVAC closet, resealing it, adding sound boards to reduce the noise of our giant 11 year old system... and then the lovely Aeroseal to close up any remaining gaps. Picture perfect. And they cleaned so much with a handheld Dyson! Seriously. Our house looked perfect when they were done. Sean emailed us documentation and pictures with all data points and graphs provided, plus a certificate of completion. So much value. I can't wait to see the reduction in our bills going forward - and avoid replacing our system for a few more years :) My husband asked Sean when we should get the ducts cleaned again; he said we're probably OK not to unless we have major construction. What? Amazing. Such an honest professional. Best decision. Best experience. Call them now before getting yet another so-so HVAC "maintenance" job done..."
Chauncy F on August 2018
Smart Charge Residential (“SCR”) specializes in the purchase, installation and service today’s most advanced plug-in electric vehicle home charging stations (EVSE). Our 240V charging stations take your EV's charging time from 19-20hrs to 2-3hrs. Charge faster and drive more. Time is money and you need to charge fast! SCR was founded one simple belief: That EV charging accessibility should be easy, convenient, affordable and available to everyone. It's a fact that 90%+ of EV charging occurs at home, however not 1 company in America, besides SCR, is exclusively focused on this forefront. And there’s a reason. It’s too much information and too complex for any ordinary business model. There are over 15 complex operational channels and fields of expertise one has to master and engage in order to successfully determine the most optimal solution for your home EVSE. Who has the time to shuffle through the myriad interwoven layers and operational know how’s, not to mention, finding a master certified, trusted, professional local electrician who knows everything there is to know about your Electric Vehicle and the 56 different types of home EVSE’s to choose from. It’s simple! SCR is your answer as we take care of everything for you.
Smart Charge Residential (“SCR”) specializes in the purchase, installation and service today’s most advanced plug-in electric vehicle home charging stations (EVSE). Our 240V charging stations take your EV's charging time from 19-20hrs to 2-3hrs. Charge faster and drive more. Time is money and you need to charge fast! SCR was founded one simple belief: That EV charging accessibility should be easy, convenient, affordable and available to everyone. It's a fact that 90%+ of EV charging occurs at home, however not 1 company in America, besides SCR, is exclusively focused on this forefront. And there’s a reason. It’s too much information and too complex for any ordinary business model. There are over 15 complex operational channels and fields of expertise one has to master and engage in order to successfully determine the most optimal solution for your home EVSE. Who has the time to shuffle through the myriad interwoven layers and operational know how’s, not to mention, finding a master certified, trusted, professional local electrician who knows everything there is to know about your Electric Vehicle and the 56 different types of home EVSE’s to choose from. It’s simple! SCR is your answer as we take care of everything for you.
FAQs for energy efficiency auditing projects in San Antonio, TX
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.
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