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Verified Reviews for Energy Efficiency Auditing pros in Keystone, SD

*The Angi rating for Energy Efficiency Auditing companies in Keystone, SD 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 Keystone, SD 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 07, 2025

Find Energy efficiency auditors in Keystone

Avatar for USA Alarm Service, Inc

USA Alarm Service, Inc

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USA Alarm Service, Inc

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29 years of experience

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.

USA Alarm is a national company that has more than two decades of experience and an award winning command center that protects more than 700,000 homes and businesses through the United States, 24 hours a day and 7 days a week. We have offices located throughout the US, with two main offices in Indianapolis, Indiana and Post Falls, Idaho.

Solar Wolf Energy

2.00(
2
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Solar Wolf Energy

2.00(
2
)
10 years of experience

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!

Swiftec, Inc

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Swiftec, Inc

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20 years of experience

Locally owned and operator, Swiftec Inc., has been in business since 2005. Swiftec offers both residential and commercial services. Swiftec strives to be a leader in the electrical Industry with quality standards. The Swiftec goal is to provide a wide range of electrical service that is competitive and proficient. Always reliable and affordable, no job is too large or too small. Experience the Swiftec difference.

Locally owned and operator, Swiftec Inc., has been in business since 2005. Swiftec offers both residential and commercial services. Swiftec strives to be a leader in the electrical Industry with quality standards. The Swiftec goal is to provide a wide range of electrical service that is competitive and proficient. Always reliable and affordable, no job is too large or too small. Experience the Swiftec difference.

Avatar for Energy Choice Center

Energy Choice Center

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Energy Choice Center

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16 years of experience

We provide free energy consulting services that pertain to discounted natural gas and electricity supply services through local utility companies.

We provide free energy consulting services that pertain to discounted natural gas and electricity supply services through local utility companies.

Energy Efficiency Auditing questions, answered by experts

ENERGY STAR®-certified windows are the most energy-efficient windows on the market. This certification means that the window meets strict efficiency guidelines set forth by the Environmental Protection Agency. While they might cost more upfront, they can save you money on your energy bills in the long run. ENERGY STAR®-certified windows lower household energy bills by an average of 12% annually.

A home energy audit costs about $420 on average, ranging from about $100 to $2,250 or more. Cost factors include the size of your home, the type of testing, and the thoroughness of the audit. A Level 1 walk-through inspection will cost between $150 and $200 for the auditor to point out inefficiencies in your home. On the other hand, a more thorough Level 3 audit with testing and a detailed report will cost about $900.

Window AC units use a fair amount of electricity during use, but the usage pales in comparison to central units. As a matter of fact, window units use around a third of the amount of energy as a central AC. On average, a window air conditioner costs between $15 and $40 per month to run, though this depends on a number of external factors.

Thankfully, LED lights use less electricity than incandescent lights, meaning you won’t spend as much on utility bills by using these light strips. Each 5-meter LED light strip will cost about $3 per year on your energy bill.

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 Keystone, SD homeowners’ guide to energy efficiency auditing services

From average costs to expert advice, get all the answers you need to get your job done.

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