When shopping for a pet door, you’ll often see the term “energy efficient”—but what does that actually mean? And more importantly, how do you know if a pet door will truly help maintain your home’s comfort?

The reality is that not all pet doors are built with energy efficiency in mind. Understanding what to look for can help you avoid drafts, reduce energy loss, and make a smarter long-term investment.

At Moore Pet Supplies, we’ve spent 30 years helping pet owners choose pet doors that perform in real-world conditions. Here’s what defines an energy-efficient pet door.

Insulated Flap Design
One of the most important features is the flap itself. Basic pet doors often use thin, flexible material that does little to block temperature transfer.

Energy-efficient models use thicker, insulated flaps designed to reduce heat loss in winter and keep hot air out in summer. Some designs even use multiple flaps to create an added barrier.

Tight, Reliable Seals
A pet door is only as good as its seal. Gaps around the flap or frame allow outside air to enter your home, reducing efficiency.

Look for pet doors that close tightly every time. Magnetic closures and precision-fit designs help ensure the flap stays sealed when not in use.

Strong Frame Construction
A solid frame plays a key role in maintaining insulation. Weak or poorly constructed frames can warp over time, creating gaps that allow air leakage.

Durable materials help maintain the integrity of the seal and keep the door performing as intended.

Proper Installation
Even the most energy-efficient pet door can fail if it’s installed incorrectly. Gaps between the door frame and the wall or door can allow drafts and moisture to enter.

Taking the time to install the pet door properly—or hiring a professional—ensures you get the full benefit of its design.

Size Matters More Than You Think
An oversized pet door creates a larger opening, which can increase energy loss. Choosing the correct size for your pet helps maintain efficiency while still providing comfortable access.

Proper sizing is a key part of overall performance.

Designed for Real-World Conditions
True energy efficiency isn’t just about features—it’s about how the pet door performs over time. High-quality materials and thoughtful design ensure consistent results, even with daily use.

A well-built pet door should continue to seal properly and resist wear for years.

Comfort Without Compromise
An energy-efficient pet door allows your pet the freedom they need without sacrificing your home’s comfort. It’s a balance between convenience and performance—and when done right, you don’t have to choose between the two.

For three decades, Moore Pet Supplies has helped pet owners find solutions that deliver both. That commitment is why we continue to be known as America’s #1 Choice for Pet Doors.

When you understand what makes a pet door energy efficient, choosing the right one becomes simple—and your home stays comfortable all year long.