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*The Angi rating for Energy Efficiency Auditing companies in Williamsburg, 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 Williamsburg, 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 October 13, 2026

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Avatar for Johns Home Inspections - Facebook
Johns Home Inspections - Facebook
4.5(
30
)
Home Energy Audit

Serving Williamsburg, MI and surrounding areas

In business since 2019

Emergency services offered

Small jobs welcome

"John and Pam were absolutely amazing. He got to the house early and finished in amazing timing. He was very detailed with his inspections and helped me understanding everything he went over."
Cabin of 1998
Home Inspection
Outside Construction
Credit Card Accepted
Complete Home

+3

Response time2 hrs
Response rate97%
Recommended by96%of homeowners
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Avatar for Geofurnace Heating & Cooling, LLC
Geofurnace Heating & Cooling, LLC
4.6(
51
)
Home Energy Audit

Serving Williamsburg, MI and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"To hid the heat pump condenser we had the unit mounted on our house. It makes a vibrating sound in the house. But in defense of Geofurance we haven't given them a chance to resolve the problem. I would also like to say the heat pump has saved us a lot of money as far as propane cost. It also replaced a resistance heating system in our loft. It now allows us the ability to use the loft in the winter."
Blower Door Test
Inferred Imaging
Hands on Evaluating
Spray Foam Insulation
We service all makes and models

+1

Response time1 day
Recommended by95%of homeowners
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Energy Efficiency Auditing questions, answered by experts

Blower door tests are measured in a few different ways, but the most popular are air changes per hour (ACH) and cubic feet of air (CFM) moving through the house per hour. A good ACH score is less than 2ACH, but 1ACH is better. This means the house experiences a total air change within 60 minutes (for 1ACH). For 2ACH, there’s a complete change every 30 minutes, and so on. CFM scores are similar in that a lower score means less air change, and therefore less leakage.

Yes, barndominiums are energy-efficient as long as insulation professionals properly install quality insulation, windows, and doors. Utility bills for barndo living can be up to 50% lower than those for a traditional home.  Make your barndo more energy efficient by working with contractors and HVAC professionals to strategically place windows, doors, and heating/cooling systems. 

Costs depend on the property size, audit complexity, and whether additional testing (e.g., blower door) is included.

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.

Audits typically take 2-4 hours, depending on the property size and energy systems.

The Williamsburg, MI 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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