Home Heat Loss blog header image
November 21, 2023
Home Heat Loss infographic

Keeping your home warm during the winter is important here in the Portland area and MidCoast Maine. However, poorly insulated homes allow precious heat to escape, leading to hefty energy bills and unnecessary wear & tear on your HVAC system. In fact, homes with insufficient insulation can cause heat loss of up to 30%! 

Where Home Heat Loss Occurs

Let’s take a look at common areas of heat loss in a home and how air sealing and insulation upgrades can help you get your comfort back.

Basements & Crawl Spaces

These areas are often left exposed to the elements, allowing both unwanted airflow and moisture to infiltrate a home’s living spaces. Basement encapsulation creates an added layer of protection.

Ceilings, Walls, & Floors

Poor insulation and air leaks in your home are leading contributors to heat loss. These leaks are often unseen but can amount to heat loss that’s like leaving a window open in your home all year long.


When an attic isn't equipped with proper insulation, it can make your home prone to ice dams as heat rises. Attic insulation helps to combat heat loss by keeping it in your home, where it belongs.


Does your fireplace have an open, missing, or broken damper? If so, it won’t keep your home comfortable, but actually contribute to heat loss.


If plumbing pipes and pipe connections are left uninsulated, the gaps they leave in your walls and foundation will allow unwanted airflow to increase your energy bills, but insulation can help.

Ducts & Vents

Unsealed ducts and poorly installed vents can create air leaks that cause significant heat loss of up to 40% of your HVAC’s output! 

Stay Cozy With Insulation Upgrades 

At Evergreen Home Performance, we’ve helped thousands of families in MidCoast Maine increase their home’s energy efficiency and comfort with our comprehensive insulation, air sealing, and encapsulation services. Get started with a home energy assessment and find out where your home is losing heat.

Unfortunately, 9 out of 10 homes are under-insulated—is yours? Find out with a home energy assessment.  Call 207-594-2244 or contact us online to schedule.

Does your home have enough insulation?

Find out with Evergreen Home Performance


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