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*The Angi rating for Energy Efficiency Auditing companies in Grant, MI 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 Grant, MI 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 30, 2026

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Avatar for USA Insulation of Grand Rapids
USA Insulation of Grand Rapids
4.0(
113
)
Home Energy Audit

Serving Grant, MI and surrounding areas

Approved

In business since 1977

Free estimates

Warranties offered

"The workers were very professional. They were here on time and worked diligently. There was a misunderstanding on some areas to do and they returned to do the extra areas. I would highly recommend this company."
Our Work
Our Work
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Attic Insulation

+6

Response time3 hrs
38 neighbors recently requested a quote
Recommended by87%of homeowners
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Double Check Inspect
3.8(
26
)
Home Energy Audit

Serving Grant, MI and surrounding areas

In business since 2000

Free estimates

Credit card accepted

"My first impression of Justin was over the phone. He was clear about what he does, very personable and just seemed to be very real and honest. He came out and seemed happy to answer all of my questions about his findings. He also gave me quick-fix and long-term solutions to each and every problem that he found with my home. He was patient, kind and thorough and I would highly recommend him to any friends and family that ever were in need of a home inspection."
Response time3 hrs
Recommended by80%of homeowners
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Kyle Tissue
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Grant, MI and surrounding areas

In business since 2022

Free estimates

Credit card accepted

Are you trying to find ways to save money on energy costs? Have you been interested in finding out if you qualify for Solar energy? If you're not already signed up to get your solar panels installed, reach out to (company name) right away! The sooner you call, the sooner the energy savings can begin! At Lightskye we have Energy

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Avatar for Greenshield Insulation
Greenshield Insulation
New to Angi
Energy Audit - For BusinessHome Energy Audit

Serving Grant, MI and surrounding areas

In business since 2016

Free estimates

Emergency services offered

Greenshield Insulation is a family-owned and operated company proudly serving Mattawan and surrounding areas within a 40-mile radius since 2016. We specialize in high-quality residential and light commercial insulation services, including spray foam (open and closed cell), blown-in cellulose, insulation removals, attic and sidewall retrofits, and ventilation solutions. With over 50 years of combined experience, we’re SPF-certified, licensed, and insured—bringing knowledge, professionalism, and attention to detail to every project. Our team helps homeowners lower energy bills, improve comfort, and qualify for available rebates and tax credits. We offer free estimates and honest guidance to help you choose the best insulation for your home or building. Serving Kalamazoo, Portage, Paw Paw, Battle Creek, and more.

Attic Insulation Experts
Attic Insulation Experts
Attic Insulation Experts
Attic Insulation Experts
Attic Insulation Experts

+11

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Energy Efficiency Auditing questions, answered by experts

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

Smart glass doesn’t use a lot of electricity, and you can expect a standard window to add between $1 and $2 per year to your electric bills. Smart glass is proof that energy-efficient windows work. Although your smart windows may consume a little energy to operate, they can save enough energy to offset the costs. If you’re concerned about the minimal bump to your electricity consumption, you can opt for smart tint, which doesn’t require electricity to work.

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.

Yes, skylights can affect a home’s energy efficiency, either positively or negatively. Properly installed, energy-efficient skylights with Low-E coatings, double glazing, and UV-blocking glass can help regulate indoor temperatures and reduce heating and cooling costs. However, poorly insulated or older skylights can contribute to heat loss in winter and excess heat gain in summer, lowering overall energy efficiency.

Attic and whole-house fans improve a home's energy efficiency and comfort. They ventilate hot air from the attic, which reduces peak cooling loads, lowers reliance on air conditioning, and decreases indoor temperatures. This improved air circulation and expedited heat exit helps lower cooling costs, balance moisture levels, and enhance overall natural airflow, contributing to the efficient operation of other home equipment.

The Grant, MI homeowners’ guide to energy efficiency auditing services

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