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Verified Reviews for Energy Efficiency Auditing pros in Modesto, CA

*The Angi rating for Energy Efficiency Auditing companies in Modesto, 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 Modesto, 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 March 24, 2026

Find Energy efficiency auditors in Modesto

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

Serving Modesto, 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 Apollo Energies
Apollo Energies
4.3(
2
)
Home Energy AuditEnergy Audit - For Business

Serving Modesto, 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."
Before and after attic insulation
Attic insulation
Normalized Indoor Iemperatures
Response time2 days
16 neighbors recently requested a quote
Recommended by100%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 Modesto, 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 Modesto, 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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Energy Efficiency Auditing questions, answered by experts

R-value is calculated by dividing the thickness of an insulation material by its thermal conductivity. The material's composition and density influence thermal conductivity. Materials with lower conductivity values provide better insulation. The higher the R-value, the better the material is at insulating, helping homeowners select insulation that meets the energy needs of their climate and home layout.

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.

If your AC runs constantly, it could be due to a number of things, including a faulty thermostat, incorrect temperature settings, or broken equipment. Alternatively, you might have an airflow problem (for example, blocked vents or leaky ductwork). Either way, an HVAC pro can identify the specific problem and fix it for you.

Yes, with features like LED lighting and variable speed controls for efficiency.

You can save money on heating oil through a combination of improving home efficiency and smart purchasing strategies.

Home Efficiency and Usage:

  • Improve Insulation: Ensure your home, especially the basement and attic, is well-insulated and sealed against drafts to prevent heat leakage.

  • Manage Your Thermostat: Use a properly calibrated and programmable thermostat. Lower the temperature by a few degrees, particularly when you are away from home or asleep.

Purchasing Strategies:

  • Buy in the Off-Season: Order heating oil during the summer months when prices are generally at their lowest. This strategy is most effective if you have a large primary tank or a separate storage tank to accommodate bulk deliveries.

  • Consider a Delivery Contract: Some companies offer contracts with a set price for the term. This can lead to savings if market prices for oil increase, but you might pay more if prices drop.

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

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