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Verified Reviews for Energy Efficiency Auditing pros in Hilmar, CA

*The Angi rating for Energy Efficiency Auditing companies in Hilmar, 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 Hilmar, 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 January 12, 2026

Find Energy efficiency auditors in Hilmar

Avatar for Santiago Electric, Inc.
Santiago Electric, Inc.
4.9(
23
)
Energy Audit - For BusinessHome Energy Audit

Serving Hilmar, CA and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"The owner responded quickly and came to our home for a free estimate within hours. He recommended installing a new outlet to prevent electrical issues down the road. The job was completed within 72hrs (due to the weekend) and we were very happy with the work. I would highly recommend and will use them again for future needs."
Response time5 hrs
Recommended by95%of homeowners
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Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Energy Audit - For BusinessHome Energy Audit

Serving Hilmar, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"We recently had Mega Power Electric Inc install a solar system and panels. The President and provided excellent communication all the way through the process. He even met with us after installation to explain the almost incomprehensible PG&E bill. Although not the least expensive bid, his was competitive and I felt he was as interested in educating me about solar and the various types of panels and inverter systems as he was in selling a system. He demonstrated how the array of panels would meet our energy needs and as opposed to some of the other companies, wasn't selling us more than we needed. We are very satisfied with our solar system and I highly recommended Mega Power Electric Inc."
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+32

Recommended by100%of homeowners
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Avatar for Electrotrade SolarLife, Inc
Electrotrade SolarLife, Inc
5.0(
5
)
Energy Audit - For BusinessHome Energy Audit

Serving Hilmar, 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."
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Recommended by100%of homeowners
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Avatar for Patrick with Solar Energy Partners
Patrick with Solar Energy Partners
5.0(
2
)
Energy Audit - For BusinessHome Energy Audit

Serving Hilmar, CA and surrounding areas

In business since 2020

Free estimates

"I was mind blown with his service. I talked to 6 solar businesses before, all of them has poor customer service and the price was too high. The service was beyond amazing. It was great. The process went very smooth. One of the best experience I ever had in contacting a business. That young man was really polite. I was really happy with his service."
Solar Energy System Design 94513
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+17

Recommended by100%of homeowners
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Energy Efficiency Auditing questions, answered by experts

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

R-value measures an insulation material's thermal resistance, indicating its ability to resist heat transfer. A higher R-value signifies better insulation performance because the material is more effective at slowing heat flow. The R-value depends on the type, thickness, and density of the insulation material, such as fiberglass, foam, or cellulose. Each inch of insulation typically provides an R-value between 3 and 8. There is no single universal R-value; the optimal choice depends on your climate zone. Colder climates require a much higher R-value than warmer ones to maintain energy efficiency, keep the home warm in winter and cool in summer, and manage costs.

To find a reputable home energy auditor, start by researching local companies that offer the service and check their reviews, methods, and certifications. The most reputable professionals are often Home Energy Professional (HEP)-certified by the Building Performance Institute (BPI). You can also consult the Department of Energy’s certified list of energy auditors or use a state licensing tool to review local guidelines and ensure you are hiring a certified professional for your area.

You can check your home's humidity in a few ways. A simple option is to use a hygrometer, which you can find at a hardware or big box store. Your smartphone may also have an app that can measure humidity. Modern thermostats, particularly smart thermostats, are also able to measure humidity levels.

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

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