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Best Exterior Doors for Insulation

Best Exterior Doors for Insulation

Windows and doors are a striking way to add character to your home. But the wrong ones or old ones can cost you in terms of energy efficiency. That’s because ill-fitting or inefficient ones can let out up to a third of your home’s heating or air conditioning, according to the Department of Energy.

When you’re upgrading your home’s exterior doors in Mankato, you’ll want to pick the most energy-efficient option possible. At Pella of Mankato, our front entry doors are designed with energy efficiency and long-term performance in mind. And you’ll have the choice to customize them for your home, with just the right hardware, color and glass features for your preferred designs.

Here are our top picks for best exterior doors for insulation.

Fiberglass Exterior Doors

When you’re choosing an insulation type for your home, there’s a reason why fiberglass is the most common. It doesn’t conduct heat very well, keeps temperatures comfortable and repels moisture. The same can be said about fiberglass exterior doors, which are frequently one of the top picks for energy-efficient doors.

As an added bonus, fiberglass:

  • Has low expansion and contraction, making them ideal if you reside somewhere notably hot or cold.
  • Doesn’t need a lot of upkeep, such as painting.
  • Naturally protects against dents and scuffs.

At Pella of Mankato, you’ll have complete access to a large number of choices that adhere to your home’s unique design, including solid and glass fiberglass doors.

While a glass pane is an easy way to bring more natural light into your home, you might want to know if it will make the door less insulating. With energy-efficient glass to choose from, you’re guaranteed to find a style that works with the weather in Mankato.

Our glass selections consist of full light to one-quarter light, with optional glazed glass for extra privacy. You’ll be able to further customize your door with caming, beveling and between-the-glass grilles and blinds.

Steel Exterior Doors

While steel doesn’t insulate as well as fiberglass, it’s still a great choice for your front door, namely if you want additional security. Steel exterior doors are naturally tough, which guarantees substantial durability against wind and rain damage. Like fiberglass, steel doesn’t depend on much maintenance like painting.

At Pella of Mankato, our steel doors are offered in three attractive traditional and contemporary styles, two-panel square, six panels and flush. You’ll be able to pick from a crisp white or a primed finish, so your door can be whatever color you’d like.

We partner with Baldwin, a premium hardware brand, so you’ll have additional security enhancements for your steel door and extra peace of mind.

Other Things to Think About When Installing Your Exterior Door

Now that you’ve picked out the material you want, there are a small number of other things you want to consider when purchasing new entry doors.

You Likely Don’t Need a Storm Door

When doing your door replacement project, you might be wondering whether it’s beneficial to add a storm door, namely if you previously had one. The U.S. Department of Energy argues this generally isn’t worth the extra cost and won’t save you that much more energy. This option is typically only recommended if you have an older door that’s in good condition but could benefit from a boost in insulation.

Don’t Forget to Assess Energy Performance Ratings

Every entry door has an energy-efficiency rating from the National Fenestration Rating Council. You’ll want to keep this in mind when making your choice, as well as the weather in Mankato and your home’s particular design. This rating covers solar heat gain and U-factor.

For solar gain ratings, you’ll have a chance to keep your home cool in the summer with lower numbers and cozier in the winter with higher numbers. Choosing the right combination can help with better adjusting indoor temperatures.

With U-factor, you’ll want to find a lower number. This means the door is more effective at conserving heat inside.

For the best performance and energy efficiency, try doors that are ENERGY STAR® certified. Doors that bear this certification have multiple panes of glass to cut down on heat flow, premium core materials for improved insulation and a secure seal to reduce energy loss.

These types of doors may lower your energy bills while making your home more comfortable. And reduced energy needs means better protection for the environment and natural resources. At Pella, we’ve continued to be a proud partner with ENERGY STAR since 1999 and offer many products that meet or exceed ENERGY STAR certification standards in every state.

There’s a reason why Pella is the #1 preferred entry door brand by homeowners.* Our exceptional exterior doors can be customized and you’ll receive helpful advice from our staff from start to finish, from your consultation to installation and everything in between. We’re happy to make the process easy and even enjoyable. To learn more, get in touch with us at 507-625-6933 today!


*Study of homeowner perceptions of leading national brands. Study commissioned by Pella, 2019.

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