Best Dog Doors: 7 Types Compared + 7 Mistakes to Avoid

It's a rainy Sunday afternoon, and you're curled up with a good book and a cup of tea. Just as you get to the most exciting part, your dog starts scratching at the door, needing to go out. You reluctantly put your book down, get up, and let them out, only to have them back scratching to come in five minutes later.

Frustrating, right? We've all been there. Installing a dog door seems like the perfect solution. But not all pet doors are created equal, and choosing the wrong one can lead to a whole new set of headaches.

Below, we compare the best types of dog doors, then walk through the 7 most common mistakes so you can pick the right one the first time.

The best dog doors by type (quick answer)

The best dog door depends on where it goes. For a regular exterior door, a lockable flap door like the Security Boss MaxSeal PRO is the most popular choice. For a sliding glass door, a no-cut patio insert is best. For a wall, choose an insulated wall-mount door. And if you want to keep strays and wildlife out, choose an electronic door that opens only for your dog.

Big dog? See our dog doors for large dogs. Small dog or cat? Try dog doors for small dogs.

Mistake #1: Choosing the wrong size

Getting the size of your pet door right is crucial. A door that's too small can be uncomfortable and might even deter your dog from using it. And if it's too large, the doggie door can be a security risk, potentially letting in unwanted guests.

You need to measure your dog accurately. Here's how to do it:

• Height: Measure from the top of your dog's shoulders (also known as the withers) to the bottom of their chest or belly.
• Width: Measure the widest part of your dog, usually across the shoulders or hips, depending on their build.
• Clearance: Measure the height from the ground to the bottom of your dog's chest. This tells you how high to install the door so your dog doesn't have to jump awkwardly.

A common mistake many pet owners make is guessing the size or assuming their dog won't grow much more. This is especially problematic with puppies. They grow faster than you think, and a pet door that fits now might be too small in just a few months.

Always consider the adult size of your puppy's breed when choosing a door.

Mistake #2: Ignoring your home's climate

If you live in a colder region, an insulated pet door is a must. These doggie doors are designed to keep the cold out and the warmth in. Without insulation, you'll not only face higher heating bills but also a chilly home, because non-insulated pet doors let in drafts and force your heating system to work overtime.

In hotter areas, the sun can be brutal. UV-resistant pet doors are your best bet here. They keep the intense heat from entering your home and can withstand the sun's rays without warping or becoming brittle. A regular door in these climates can warp, which shortens its life and lets air through.

So, what should you look for?

• Insulated Doors: If you're in a colder region, look for doors with good insulation like the Security Boss SB72W Wall Mount Insulated Dog Door. Some even come with double flaps or magnetic seals to keep the cold out.
• UV-Resistant Doors: For hot climates, choose doors made from durable, UV-resistant materials. These will last longer and keep your home cooler.
• All-Weather Doors: If your area experiences both extremes, consider all-weather doors. These are designed to handle both cold winters and hot summers.

Mistake #3: Overlooking security

A poorly secured pet door can invite more than just your pet into the house. The last thing you want is an easy entry point for intruders or even neighborhood critters. Here's what makes a dog door secure:

• Locking Mechanisms: Basic dog doors come with simple locking covers like the Watchdog Security Pet Doors Cover, but advanced options offer multiple locking points. Look for doors that allow you to lock them from both inside and outside.

• Electronic Controls: High-tech dog doors can be a game-changer. These electronic dog doors use your pet's microchip or a special collar key to unlock only for them, like the PetSafe Electronic Lockable Patio Dog Door.
• Sensor Systems: Some dog doors come with sensors that detect your pet's presence. These systems can open the door when your dog approaches and close it securely after they pass through. Learn more in how automatic dog doors work.

Mistake #4: Neglecting installation compatibility

Installing a dog door might seem straightforward, but improper installation can lead to problems. One common mistake is jumping into a DIY installation without the proper tools or instructions. It might look simple enough on YouTube, but each dog door and home setup is different, and missteps can leave you with a door that's not secure or efficient.

Step-by-step guide to installing a dog door

1. Read the Instructions: Start by thoroughly reading the manufacturer's instructions. It sounds obvious, but skipping this step is where many go wrong.
2. Gather the Right Tools: Make sure you have all the necessary tools before you start. This might include a jigsaw, drill, measuring tape, and level.
3. Measure Twice, Cut Once: Carefully measure the placement of the dog door. Double-check your measurements to avoid cutting too large or too small an opening.
4. Mark the Outline: Use a pencil to mark where you'll cut. This helps ensure a precise fit.
5. Cut the Opening: Follow the outline with your jigsaw. Take your time to make sure the edges are clean and straight.
6. Install the Frame: Place the dog door frame into the opening. Check that it fits snugly before securing it with screws.
7. Seal the Edges: Use weatherproofing materials to seal around the edges of the door. This prevents drafts and water leaks.
8. Test the Door: Make sure the door swings or slides smoothly. Adjust as needed so it works perfectly for your dog.

For more detailed instructions, see How To Install Dog Doors In A Door. Don't want to cut anything? A sliding glass door insert fits in your existing patio track with no tools. If you're not comfortable installing a pet door in an existing door or wall, it's best to call a professional.

Mistake #5: Skimping on quality

The materials used in your dog door play a crucial role in its durability, security, and overall performance. Here are the common materials and their pros and cons:

• Plastic dog doors are lightweight and often the most affordable option. They're easy to install and come in various sizes. However, they can wear out quickly, especially if your dog uses the pet door frequently, and they're more prone to damage from chewing or scratching.
• Aluminum dog doors like the Security Boss MaxSeal PRO are more durable than plastic ones. They can withstand frequent use, are often more secure, and resist chewing and scratching. They can cost more and may need professional installation, especially in a wall, but their durability makes them worth it for larger or more active dogs.
• Vinyl dog doors offer a balance between durability and flexibility. They're weather-resistant, handle regular use and insulate well, making them a solid choice for both hot and cold climates. Vinyl usually costs more than plastic but less than aluminum.

While saving money upfront can be tempting, low-quality materials often lead to higher costs in the long run due to frequent replacements and repairs.

For high-traffic areas, aluminum doggie doors are the best choice due to their durability and resistance to damage. For moderate use, vinyl doors strike a good balance between cost and durability. If budget is a concern, look for higher-quality plastic doors with reinforced edges to increase their lifespan.

Mistake #6: Not considering the dog's age and mobility

Puppies grow quickly, so a pet door that fits them now might be too small in a few months. Choosing a door that fits their adult size saves you from upgrading later. Also make sure the door is easy for them to use, with no sharp edges or heavy flaps that are hard to push.

As dogs age, they may develop joint issues or arthritis, making it hard for them to jump or push through a heavy door. Look for doors with lower step-over heights so your dog doesn't have to lift their legs too high, and wide openings so they can move through comfortably without squeezing.

If your dog has hip dysplasia, arthritis, or any other condition that affects their movement, choose a dog door that is safe and easy to navigate. Features like gentle magnetic closures, lightweight flaps, and no-step entry can make a big difference.

Mistake #7: Forgetting to train your dog

Without proper training, even the best dog door can turn into a source of frustration. Approach training with patience: your dog needs to feel safe and confident using the pet door, and that takes time and positive experiences. Forcing them through quickly can make them scared of it, and scolding creates a negative association. Instead, focus on positive reinforcement.

Start by letting your dog explore the doggy door while it's propped open. Use treats and praise to make it a positive experience. Then stand on the other side of the door and call your dog through, using their favorite treats or toys as incentives.

Once your dog is comfortable going through the open door, start closing it slightly. Encourage them to push it open with their nose or paws, rewarding them every time they succeed. Consistency is key, so practice several times a day, but keep sessions short and fun. For a full walkthrough, see training your puppy to use a dog door.

Frequently asked questions

What is the best type of dog door?

For most homes, a lockable, weather-sealed door-mount flap door is the best all-round choice. Choose a sliding glass door insert if you rent or don't want to cut anything, a wall-mount door if you want to keep your doors intact, and an electronic door if you need to keep other animals out.

What is the most secure dog door?

Electronic dog doors that unlock only for your pet's collar key or microchip are the most secure against animals. Against intruders, look for a door with a locking steel or aluminum security panel and a flap sized no larger than your dog needs.

What is the best dog door for cold weather?

Choose an insulated door with a double flap and magnetic or brush seals, such as the Security Boss SB72W or MaxSeal PRO.

Want a door that opens on its own? Read the best automatic dog doors.

Finding the best dog door for your home

Choosing the right dog door makes life easier for both you and your furry friend. Pick the right type for your door or wall, size it for your dog's adult size, and install it properly, and you'll avoid the headaches above. Ready to choose? Shop all dog doors.