๐Ÿ† Complete Buyer's Guide ยท Dog Care Products

Can a Dog Door Save Heat for a Maltese?

Maltese dogs feel the cold. See how an insulated dog door like the Ideal Ruff Weather Pet Door keeps your tiny pup warm and comfortable all year.

Some links below are affiliate links. If you buy through them we may earn a small commission at no extra cost to you. Our rankings are based on product research, label data and suitability, not on commissions.

๐ŸพNew to the breed? Read our full Maltese breed guide for temperament, care, health and lifespan. Ideal Pet Products Ruff-Weather Pet Door for Small Dogs โ˜… Top Pick: Ideal Pet Products Ruff-Weather Pet Door for Small โ€ฆ Check Price on Amazon →
5-7 lbs
Average Maltese Weight
5x7 in
Recommended Flap Size
1-2 hrs
Average Installation Time
3-5 yrs
Typical Product Lifespan
โšก Key takeaways
  • Best Overall: Ideal Pet Products Ruff-Weather Pet Door for Small Dogs. This door features an insulated flap that seals tightly, reducing drafts and energy loss.
  • Best Budget: PetSafe Freedom Aluminum Pet Door for Small Dogs. An affordable aluminum frame door with a clear flap that is lightweight enough for a Malte.
  • Best for Renters: PetSafe Wall Entry Pet Door for Small Dogs. Designed for wall installation, this door can be placed in an exterior wall without cuttin.
  • Best Insulated: Endura Flap Pet Door for Small Dogs. This door has a double-flap design with magnetic closure and insulation, ideal for energy.
  • Best Smart Feature: PetSafe Electronic Smart Door for Small Dogs. This electronic door opens only when your dog wears a compatible collar key, preventing ot.
At a Glance

Quick Comparison

Quick answer

Our top pick is the Ideal Pet Products Ruff-Weather Pet Door for Small Dogs, offering excellent insulation and a secure locking mechanism that suits a Maltese’s small size. If you need a budget-friendly option, the PetSafe Freedom Aluminum Pet Door provides durability at a lower price. For renters, the PetSafe Wall Entry Pet Door is a great no-cut solution.

What to consider for Dog Door For Maltese Dogs

Maltese dogs are small, typically weighing 4 to 7 pounds, so the door flap must be low enough and lightweight for them to push through easily. Security is crucial because Maltese are often indoor dogs; look for a door with a locking panel or electronic key to prevent unwanted entry. Energy efficiency matters too, as a poorly insulated flap can lead to drafts. Measure your door or wall thickness and choose a model that fits. Also consider whether you want a door that mounts in a door, wall, or window.

What to look for in a dog door

When choosing a dog door for a Maltese, prioritize a flap size that is small (typically 5 by 7 inches or similar) so the dog can pass without struggle. Look for materials like aluminum or heavy-duty plastic for durability. Insulated flaps reduce energy loss. A secure locking mechanism, such as a sliding bolt or electronic lock, adds safety. For renters, a model that installs without cutting (like a window insert) may be ideal. Finally, consider ease of installation and whether the door comes with a template or instructions.

How we chose these picks

  • We analyzed product specifications for flap size, weight, and material to ensure suitability for small breeds like Maltese.
  • We reviewed customer feedback on ease of installation and use for small dogs.
  • We considered security features such as locks and electronic compatibility.
  • We evaluated energy efficiency ratings and insulation claims.
  • We compared price points across brands to identify value options.
  • We prioritized products with clear sizing guides and warranty information.
  • Never ranked a product higher just because it pays a commission.

What to avoid

  • Avoid dog doors with heavy flaps that a Maltese cannot push open easily.
  • Avoid models with poor insulation that let in drafts and increase energy bills.
  • Avoid doors without a lock or security feature if you live in a ground-floor home.
  • Avoid doors that require cutting a large hole if you are renting or have a metal door.

For more guidance, check our dog guides, dog care products, and dog health sections.

Why this matters

Maltese dogs are small and sensitive to temperature, so an insulated dog door can help maintain a consistent indoor climate while allowing them access to the outdoors.

The Options

Types Explained

Door-Mounted Pet Doors

Installed by cutting a hole in an exterior door. They are the most common type and come in various sizes and insulation levels.

Best for: Homeowners with wooden or composite doors who want a permanent solution.

Wall-Mounted Pet Doors

Installed through an exterior wall, often with a tunnel. They can be placed at any height and are good for renters if reversible.

Best for: Homes where doors are not suitable (e.g., metal or glass doors) or when you want to avoid cutting the door.

Window Insert Pet Doors

Fit into a window opening without permanent modification. They are removable and ideal for renters.

Best for: Renters or those who want a temporary, non-destructive solution.

Electronic Pet Doors

Use a sensor or collar key to allow only your pet to enter. They offer high security and can be programmed for multiple pets.

Best for: Owners concerned about stray animals entering or who want to control access.
The Rankings

Top 5 Picks

#1
Ideal Pet Products Ruff-Weather Pet Door for Small Dogs
Best Overall

Ideal Pet Products Ruff-Weather Pet Door for Small Dogs

View on Amazon

This door features an insulated flap that seals tightly, reducing drafts and energy loss. Its small size (5.5 by 7.5 inches) is perfect for Maltese. The locking bolt provides security. However, installation requires cutting a hole in the door, which may not suit renters.

#2
PetSafe Freedom Aluminum Pet Door for Small Dogs
Best Budget

PetSafe Freedom Aluminum Pet Door for Small Dogs

View on Amazon

An affordable aluminum frame door with a clear flap that is lightweight enough for a Maltese. It includes a sliding bolt lock. The main trade-off is less insulation compared to premium models, so some drafts may occur in extreme weather.

#3
PetSafe Wall Entry Pet Door for Small Dogs
Best for Renters

PetSafe Wall Entry Pet Door for Small Dogs

View on Amazon

Designed for wall installation, this door can be placed in an exterior wall without cutting a door. It comes with a tunnel and adjustable frame. The flap is small and easy for a Maltese to use. The downside is that wall installation is more complex and may require professional help.

#4
Endura Flap Pet Door for Small Dogs
Best Insulated

Endura Flap Pet Door for Small Dogs

View on Amazon

This door has a double-flap design with magnetic closure and insulation, ideal for energy efficiency. The small size (5 by 7 inches) fits Maltese well. It is more expensive, but the superior insulation justifies the cost. One limitation is that the magnets may require occasional adjustment.

#5
PetSafe Electronic Smart Door for Small Dogs
Best Smart Feature

PetSafe Electronic Smart Door for Small Dogs

View on Amazon

This electronic door opens only when your dog wears a compatible collar key, preventing other animals from entering. It is programmable and works with small dogs. The flap is lightweight. The main drawback is the higher price and the need for batteries or power.

Before You Buy

Key Buying Factors

01

Flap Size and Weight

The flap must be small enough (around 5x7 inches) and lightweight so your Maltese can push through easily. A heavy flap may discourage use.

02

Security Features

Look for a door with a lock, sliding bolt, or electronic key to prevent unwanted entry by other animals or intruders.

03

Insulation and Energy Efficiency

An insulated flap or double-flap design helps reduce drafts and heat loss, keeping your home comfortable and lowering energy bills.

04

Installation Type

Choose between door-mounted, wall-mounted, or window insert models based on your home and whether you rent. Door mounts are common but require cutting.

05

Durability and Materials

Aluminum frames and heavy-duty plastic flaps last longer. Consider weather resistance if the door faces the outdoors.

Living With It

Care, Cost and Maintenance

Regular Cleaning

Wipe the flap and frame with a mild soap solution monthly to remove dirt and oils. Avoid harsh chemicals that may damage the plastic or seal.

Lubricate Moving Parts

Apply a silicone-based lubricant to hinges and locks every few months to ensure smooth operation and prevent rust.

Check Seals and Insulation

Inspect the weather stripping and seals periodically for wear. Replace if gaps appear to maintain energy efficiency.

Pro tip

If your Maltese is hesitant to use the door, prop the flap open with a stick for a few days and encourage them with treats on the other side.

Frequently asked questions

How do enzyme cleaners work on urine stains?
Enzyme cleaners contain beneficial bacteria that produce enzymes, which break down urine into carbon dioxide and water. They target the uric acid crystals that cause odor, eliminating the smell at a molecular level. For best results, apply the cleaner to fresh or re-wetted stains and allow it to sit for the recommended time, usually 10 to 15 minutes, so the enzymes can work. Avoid using other cleaners beforehand, as residues can interfere. These products are safe for most surfaces when used as directed.
Are enzyme cleaners safe for pets?
Most enzyme cleaners are formulated to be pet-safe once dry. They use non-toxic ingredients and are free from harsh chemicals like bleach or ammonia. However, always check the label for any warnings. Keep pets away from the area while the cleaner is wet, as ingestion could cause mild stomach upset. After drying, the residue is generally harmless. For added safety, choose products labeled as biodegradable or plant-based.
How do I remove set-in urine odor from carpet?
Set-in odors require deep cleaning. First, blot up any fresh urine. Then apply an enzyme cleaner generously to saturate the stain and surrounding area. Let it sit for 15 to 30 minutes, then blot dry. For old stains, you may need to repeat the process. If the odor persists, use a carpet extractor with an enzyme solution. Avoid steam cleaning first, as heat can set the stain. Always test on a hidden area first.
Can dog urine damage my lawn?
Yes, dog urine contains nitrogen and salts that can burn grass, causing yellow or brown patches. Female dogs tend to cause more concentrated spots. To prevent damage, dilute the urine by watering the area immediately after your dog urinates. You can also train your dog to use a designated spot with gravel or mulch. Lawn repair products like Dog Rocks can help reduce nitrogen levels in the urine, but their effectiveness varies.
What is the best way to clean dog urine from carpets?
Blot up as much urine as possible with paper towels. Then apply an enzyme cleaner specifically for pet stains, following the product instructions. Avoid using ammonia-based cleaners, as they can attract dogs to re-mark. For hard floors, use a pet-safe cleaner and mop. For carpets, a wet-dry vacuum can help extract the cleaner. Repeat if necessary until the odor is gone.
Are there any safety concerns when using cleaning products around pets?
Yes. Always keep pets away from wet cleaning solutions, as some ingredients can be irritating if ingested or contacted. Choose products labeled pet-safe or non-toxic. Ensure the area is well-ventilated. After cleaning, allow surfaces to dry completely before allowing pets back. Store all cleaning products out of reach. If your pet shows signs of distress after exposure, contact a veterinarian immediately.
Can I use enzyme cleaners in a carpet cleaning machine?
Many enzyme cleaners are safe for use in carpet cleaning machines, but you should check the product label. Some may require dilution or may not be compatible with certain machines. Using a machine can help deep-clean carpets and remove embedded odors. After using the machine, run a rinse cycle with water to remove any residue. Always test in an inconspicuous area first.
How do I prevent my dog from urinating on the same spot indoors?
Thoroughly clean the area with an enzyme cleaner to remove all odor. Then block access to the spot with furniture or a pet gate. Provide an alternative potty area, like a pee pad or outdoor spot. Use positive reinforcement when your dog uses the correct area. If the behavior persists, consult a certified dog trainer or veterinarian to rule out medical issues.
What should I look for in a lawn repair product for dog urine damage?
Look for products that neutralize urine salts and nitrogen, such as those containing gypsum or beneficial microbes. Some lawn repair products also contain grass seed and fertilizer to help regrow patches. Ensure the product is safe for pets and children once applied. Water the area before and after application to help the product penetrate. Results may take a few weeks.
A note on advice: This guide is general information, not a substitute for professional veterinary advice. Talk to your vet before changing your dog's diet or care routine, especially if your dog has allergies, kidney disease, pancreatitis, obesity, heart disease or any other medical condition.
Transparency

How we made this guide

How we chose. We compared the options on the factors that matter most for Dog Care Products, using manufacturer specifications, aggregated verified owner reviews and editorial comparison. We rank independently: no brand pays for placement, and affiliate commissions never influence our picks.

How it was written. This guide was researched, reviewed and edited by the ProPawPicks editorial team for accuracy and usefulness. We have not personally tested every product; where we have not, rankings rely on verified specs, owner feedback and expert comparison rather than a hands-on review.

Affiliate disclosure. ProPawPicks is reader-supported. If you buy through links on our site, we may earn a commission at no extra cost to you. See our affiliate disclosure.

Keep Reading

More Dog Care Products guides

Invisible Dog Fence for Large Dogs: 5 Best Picks (2026)View picks โ†’Invisible Dog Fence for Sensitive Stomachs: 2026 Top Pick ReviewedView picks โ†’Best Invisible Dog Fence for Small Dogs 2026: 5 Top Picks ReviewedView picks โ†’Expert Picks: Best Invisible Dog Fence for the Money 2026View picks โ†’Which Invisible Dog Fence Is Best? 5 Top PicksView picks โ†’Contain Your Dog Reliably: 5 Best Invisible Fence Picks for 2026View picks โ†’

Sources and further reading

Some links below are affiliate links. If you buy through them we may earn a small commission at no extra cost to you. Our rankings are based on product research, label data and suitability, not on commissions.