Evergreen Home Performance, Energy Audit, ME

Your home energy audit is the cornerstone of Evergreen's project design phase. This evaluation gives us the data we need to pinpoint problems and engineer solutions. Here’s what you can expect:

Energy Efficiency Audit | Evergreen Home Performance | Maine

Infrared Inspection

We get a good first look at your home during your free energy consult, and we begin the audit with a more thorough inspection, top to bottom, inside and out. We look for common problems based on the age and style of your home, use infrared analysis to detect air leaks or insulation gaps, and take photos to document these issues as well as your home’s particular conditions.

Blower Door Test & Energy Audit | Evergreen Home Performance | Maine

Blower Door Testing

The bright red blower door that measures your home's "leakiness" is the most recognizable part of a home energy audit. It provides crucial information about how quickly air moves through your home. Too fast, and you waste energy by heating air that will soon leak out of your house. Too slow, and your tight house may concentrate indoor air quality problems. 

During the energy audit, we use the blower door’s large calibrated fan to measure airflow, determine the rate of air exchange, and pinpoint leaks that inflate that rate. Though some leaks are visible, most are due to the stack effect, in which cold air presses in through your foundation and warm air leaks out through your roof.

Health & Safety Testing

The safety of your home is our first priority. We test for carbon monoxide – a poisonous byproduct of all combustion appliances, including fuel-burning furnaces, boilers, water-heaters, and space heaters – and ensure that chimneys, flues, exhaust fans are functioning appropriately. We also look for indications of other health hazards, including asbestos, high moisture levels that could foster mold growth, and outdated electrical wiring.

Other Considerations 

Your house is a system, and every variable – from the building envelope and heating system to the way you use your space – affects your comfort and energy costs. We note your fuel use history, domestic hot water production, condition of your windows and doors, and more.

Project Design

This whole-house assessment provides a big picture of your home’s current performance and reveals opportunities to help you create a healthier, more comfortable home with lower energy costs, increased property value, and greater durability. We report that information and recommend improvements that could cut your overall heating and cooling costs by 25-50%.

Ready to improve your home?
Learn how air sealing, insulation, basement encapsulation, and window replacements can make you more comfortable.

Frequently Asked Questions

What is the stack effect?
What's the big deal about carbon monoxide?

Related Content

Free Consult

Your free one-hour consult is the first step toward making your home more comfortable and energy efficient. Describe your home’s current conditions and challenges, learn building science basics, and begin planning an energy efficiency upgrade.

Find out how efficient your home is.

(207) 594-2244

Schedule Service

Get Started


basement encapsulation, evergreen home performance, ME
No one likes stepping out of bed in the morning, only for their feet to hit an ice-cold floor; yet that is exactly what many Mainers experience all winter long. Some flooring materials such as tile... Read more

Case Studies

Matt and Christa knew that the home they had just purchased in the neighborhood they loved -- for the price they could afford -- was going to... Read More