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*The Angi rating for Energy Efficiency Auditing companies in Freeman, 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 Freeman, 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 August 26, 2025

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Energy Efficiency Auditing questions, answered by experts

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.

Upgrade to double-glazed glass or apply energy-efficient coatings to reduce heat loss and utility costs.

Yes, most audits include a report with prioritized recommendations for improving energy efficiency. Confirm with your auditor.

The extra insulation helps reduce energy costs by minimizing drafts and temperature exchange between indoors and outdoors.

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.

The Freeman, SD homeowners’ guide to energy efficiency auditing services

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