
Serving Biola, CA and surrounding areas
Approved
In business since 2000
Customers say: Quick response
"Apollo did a fine job assessing my townhomes energy needs. The energy report covered what I needed."




*The Angi rating for Energy Efficiency Auditing companies in Biola, 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 Biola, 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 02, 2025

Serving Biola, CA and surrounding areas
Approved
In business since 2000
Customers say: Quick response
"Apollo did a fine job assessing my townhomes energy needs. The energy report covered what I needed."




Serving Biola, CA and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"Darren Holden its great he care about his customers."





+1

Serving Biola, CA and surrounding areas
In business since 2007
Free estimates
"We hired SunRun for the PPA solar program.. no brained, got way cheaper electricity per month. Highly recommended"





+8

Serving Biola, CA and surrounding areas
In business since 2018
Free estimates
Offers commercial services
"They did a really good job and answered all my questions. He knows the business and overall it was the best experience with him. They are pretty good with the installation and everything looks very clean."

Serving Biola, CA and surrounding areas
In business since 2015
Free estimates
Emergency services offered
"The service was performed at a very high level and completed in a timely manner. The team worked with integrity and exhibited professionalism. I highly recommend them for any solar and energy needs."



Serving Biola, CA and surrounding areas
In business since 2020
Free estimates
Credit card accepted
"Can never go wrong with them"

Serving Biola, CA and surrounding areas
In business since 2012
Free estimates
Credit card accepted
"I had a good, technical phone conversation with the first salesperson, so we arranged for a site survey to be performed at our house. Unfortunately the guy doing the site survey did not show up and I had trouble contacting the first salesperson. I second salesperson took over saying that the first one had a family issue come up. I second site survey was performed well. We have a stone coated metal roof, which requires special experience and so was one of the key factors in choosing a solar installer. Slingshot convinced me that not only did they have the experience but they would be hiring a roofer with extensive experience installing stone coated metal roofs to work on the job and insure the integrity of the work. Another key factor for us was being able to install the system before PG&E's NEM 1.0 program filled up. Slingshot was able to offer us the soonest installation time by far. One unique feature of Slingshot Power's offering is that they do an annual cleaning of the panels to save the homeowner from risking their neck. For this job I closely evaluated seven contractors and had quotes from an additional four. Besides matching or beating the other contractors on quality, Slingshot gave me a great deal on installing the highest quality panels from SunPower. They were also flexible in letting me downsize the system after signing the contract without changing the price per Watt. The majority of the installation took a single day. The crew lead did a great job of communicating with us, including introducing everyone and taking pictures throughout the job so that I didn't feel that I needed to climb on the roof and check on their work periodically. They had an impressive number of people here, but everyone seemed to be quite active. I didn't notice people standing around waiting for instructions. The crew lead was quite enthusiastic about the job and his work. The truck was also impressive -- nicely organized and equipped. From what I saw, the crew did a good job with the safety precautions -- lashing the ladder to the house so that it wouldn't tip and having the safety ropes. They did a great job cleaning up afterwards. The one area of the installation in which I wasn't completely satisfied was the caulking of the wood trim around the main electrical panel -- the bead was rather sloppy, some of the caulk fell out right away, and there were gaps. I sent Slingshot photos and the guy that had done that work said that the wood was rotten. They then offered to make a special trip back to replace the wood and re-caulk it -- which was done well. After installation, the county must inspect the job and approve it. The final step is to submit the application to PG&E and get their permission to operate (PTO). During this stage I was working with Slingshot's Manager of Customer Happiness (MoCH). Unfortunately, I was least happy with his service during my dealings with Slingshot. As mentioned before, we were anxious to get it installed before the NEM program filled up. Once the county inspection was passed, the MoCH asked for a copy of our power bill. I had provided one to the salesman a month earlier when the contract was signed, so this caused an unnecessary delay of an entire business day. He then said that we had to get off the Smart Rate plan before switching to solar, so this took another day. It should have been done sooner since they had our bill early on. There was then some slight delays because he entered some information wrong on the application to PG&E. In the end we did make it into the NEM 1.0 program, but we were one of the last. Once PG&E gave PTO, we had to wait another half a week before "throwing the switch" and starting to produce power because Slingshot had to come back out and finish configuring power converter. They said that they had gotten a batch that didn't configure automatically as usual. In general, the MoCH was not responsive to all of my emails. Sometimes I had to send a second note and then he would call me back. We were now producing power, but we didn't have access to the SolarEdge portal to see the monitoring data. The MoCH said that SolarEdge was updating their servers and we couldn't get connected for a while. After a month of waiting, I contacted SolarEdge directly and they said that the upgrades were a continuous process that would not affect getting a monitoring account. Contacting SlingShot again, a different person called me back quickly and got our monitoring account set up. I noticed that the orientation of our array on the portal was incorrect, and he took care of fixing it. Overall, it was a very positive experience despite a few hiccups along the way, but Slingshot took care of correcting everything in the end."

Serving Biola, CA and surrounding areas
In business since 2015
Credit card accepted
"All I can say is WOW !!! The report was was way more than I expected, Allen takes time to explain everything in detail. I would highly recommend Inspection Pro to anyone buying a house, this is information that you need."





Serving Biola, CA and surrounding areas
In business since 2022
Free estimates
Credit card accepted
"They are in the process of sending out an engineer"





+3
Serving Biola, CA and surrounding areas
In business since 2021
Free estimates
Credit card accepted
"Seemed to know exactly what the problem was, repaired got paid and was on his way. Thank you for repair. George M"
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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Wondering what an energy audit is and how it can help keep you safe? Keep reading to learn about home energy audits and how they can save you money.

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.

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.