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A good dog door changes daily life for both you and your dog. No more getting up every hour to let your dog out, no more accidents because you were five minutes too late, and no more dog scratching at the door at 6am. Your dog gets independence, and you get peace of mind.
In this guide we cover the best dog doors in 2026 for every type of home, wall, and dog size.
Quick Picks — Best Dog Doors
| Product | Best For | Dog Size | Our Rating |
|---|---|---|---|
| PetSafe Freedom Aluminium | Best overall | Small to large | ★★★★★ |
| Endura Flap Double Flap | Best energy efficiency | All sizes | ★★★★★ |
| PetSafe Electronic SmartDoor | Best security | Small to large | ★★★★☆ |
| High Tech Pet Power Pet | Best automatic | Medium to large | ★★★★☆ |
| PetSafe Wall Entry | Best for walls | Medium to large | ★★★★☆ |
| Ideal Pet Products Sliding Glass | Best for glass doors | Small to XL | ★★★☆☆ |
Types of Dog Doors — Which One Do You Need?
Before buying, you need to know which type fits your home:
Door-mounted — the most common type. Installed directly into a solid door by cutting a hole. Works on wooden, fibreglass and hollow-core doors.
Wall-mounted — installed through an exterior wall. More work to install but more secure and better insulated. Best for homes where door installation is not possible.
Sliding glass door inserts — a panel that slides into the track of your existing sliding glass door. No cutting required — the easiest installation option.
Electronic and microchip doors — only open for pets wearing a specific collar sensor or microchip. Prevents other animals from entering.
Screen door inserts — lightweight flap installed in a screen door. Not secure or insulated but useful for mild climates.
The 6 Best Dog Doors in 2026
1. PetSafe Freedom Aluminium Pet Door — Best Overall
The PetSafe Freedom is the most widely recommended dog door for good reason. The aluminium frame is durable and weather-resistant, the double-flap design provides solid insulation, and it comes in five sizes to fit dogs from 5 lbs all the way up to 220 lbs.
Why it works: The rigid aluminium frame holds its shape over years of use and does not warp in heat or cold the way plastic frames can. The vinyl flap is flexible enough for small puppies to push through but rigid enough to seal properly in wind and rain.
Best for: Most homeowners installing a dog door for the first time. Reliable, long-lasting, and available at a reasonable price point.
Sizes available: Small, medium, large, extra-large, and giant.
2. Endura Flap Double Flap Pet Door — Best Energy Efficiency
If your priority is keeping your home’s temperature stable — and your energy bill low — the Endura Flap is the best option available. The double-flap magnetic seal is tested to outperform single-flap doors in energy efficiency, and it is the only pet door independently certified to meet energy performance standards.
Why it works: The two separate flaps create an air pocket between them that acts as insulation. Even in extreme cold or heat, the Endura Flap keeps drafts out far more effectively than standard single-flap doors.
Best for: Homes in very hot or cold climates, energy-conscious owners, anyone whose previous dog door caused noticeable drafts.
3. PetSafe Electronic SmartDoor — Best Security
The PetSafe SmartDoor only opens when it detects the SmartKey worn on your dog’s collar. No SmartKey means no entry — keeping neighbourhood cats, raccoons, and other wildlife out of your home.
Why it works: The motorised door slides open automatically when your dog approaches and locks securely when they are inside. The SmartKey has a range of about one metre, so the door activates just before your dog reaches it.
Best for: Homes in areas with wildlife, owners who have had problems with neighbourhood cats using their dog door, anyone concerned about security.
The downside: Requires batteries. If batteries die and your dog is outside, the door will not open automatically — though there is a manual override.
4. High Tech Pet Power Pet Electronic Door — Best Automatic Door
The Power Pet is the most sophisticated automatic dog door on the market. An ultrasonic collar activates the door from up to 4.5 metres away — further than any competing product — and the motor opens and closes the door smoothly without the mechanical clicking of cheaper motorised doors.
Why it works: The ultrasonic sensor means your dog does not have to be directly at the door for it to open. Large dogs that move quickly will find the door already open when they arrive rather than having to wait for the motor.
Best for: Large and fast-moving breeds, older dogs who struggle to push through a heavy flap, homes where a fully automatic door is preferred over a manual flap.
5. PetSafe Wall Entry Pet Door — Best for Wall Installation
If you want to install a dog door through an exterior wall rather than a door, the PetSafe Wall Entry is the most straightforward option. It includes an extendable tunnel that adjusts to different wall thicknesses and a locking cover for security when not in use.
Why it works: Wall installation allows you to choose the exact location of the door — low traffic areas, closer to the garden, away from the main entrance. The tunnel extends from 4.5 to 8.5 inches to accommodate standard wall thicknesses.
Best for: Homes where door installation is not possible, owners who want to avoid cutting into a quality front or back door, garage-to-garden access.
Note: Wall installation is more involved than door installation — consider hiring a handyman if you are not comfortable cutting through an exterior wall.
6. Ideal Pet Products Sliding Glass Pet Door Insert — Best for Rental Properties
If you rent your home or simply do not want to cut any holes, the sliding glass insert is the answer. This panel slides into your existing sliding glass door track, replacing part of the glass panel with an aluminium frame that includes a built-in dog door.
Why it works: Zero permanent modification to your home. When you move out, remove the panel and replace the original glass section. Available in heights to fit most standard sliding glass door frames.
Best for: Renters, anyone who does not want to cut into their doors or walls, homes with sliding glass doors to the garden.
What Size Dog Door Do You Need?
Measure your dog before buying. The door opening should be:
- At least 2 inches wider than your dog’s widest point (usually their shoulders)
- At least 2 inches taller than the distance from the floor to the top of their back
Most manufacturers provide a sizing guide. When in doubt, size up — a door that is slightly too big is far better than one your dog has to squeeze through.
| Dog Weight | Recommended Size |
|---|---|
| Up to 15 lbs | Small |
| 15–40 lbs | Medium |
| 40–100 lbs | Large |
| 100 lbs+ | Extra-large or Giant |
How to Install a Dog Door in 5 Steps
Step 1 — Choose your location Most people install dog doors in the back door leading to the garden. The bottom of the flap opening should sit about 2–3 inches above the ground outside to prevent flooding.
Step 2 — Mark and cut Use the template included with your door to mark the cut lines with a pencil. Use a jigsaw for wooden doors, a reciprocating saw for walls. Drill a starter hole at each corner first.
Step 3 — Insert the frame Slide the interior frame into the hole from inside. Attach the exterior frame from outside. Most doors use screws to sandwich both frames together through the door material.
Step 4 — Seal the edges Apply weatherproof sealant around the exterior frame edge to prevent water from getting between the frame and the door.
Step 5 — Train your dog Hold the flap open and encourage your dog through with treats. Once they are comfortable, hold the flap halfway and let them push through. Most dogs learn within a few sessions.
According to the American Kennel Club, introducing your dog to a new door slowly with positive reinforcement produces the best results. The Humane Society recommends never forcing a dog through a new door as this creates negative associations.
Frequently Asked Questions
Will a dog door let cold air into my house? Single-flap doors let in some draft. Double-flap doors like the Endura Flap are significantly better insulated. In very cold climates, a double-flap or electronic door is worth the extra cost.
Can burglars get in through a dog door? Standard dog doors sized for breeds under 40 lbs are too small for a person to get through. For large breed doors, electronic models with locking mechanisms are the most secure option.
My dog won’t use the new door — what do I do? Start by propping the flap fully open so your dog can walk through without pushing anything. Reward every successful pass. Once confident, let the flap rest on their back as they walk through, then finally let it close fully. Never push your dog through.
How do I stop other animals from using the door? An electronic or microchip dog door is the most reliable solution. Alternatively, lock the door when your dog is inside for the night.
Can I install a dog door in a glass door? Not directly — cutting glass requires professional tools. The sliding glass insert panel is the best solution for glass doors.
How do I clean a dog door? Wipe the flap with a damp cloth and mild soap. Check the frame and seal annually for wear. Replace the flap if it becomes stiff, cracked, or no longer seals properly.
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Always supervise your dog when first introducing a new dog door. Most dogs adapt quickly with patience and positive reinforcement.