How to Keep Your Dog Cool in an Apartment During Summer
Picture 3 p.m. in a top-floor apartment: AC off, blinds open, a dog flat on the tile and panting. Whether that needs a fan or a vet depends on a few things you can check, and the plan starts with where the danger really comes from.
Where the heat risk comes from, by the numbers
The best figures come from UK veterinary records, and they point somewhere other than the hot-car warnings. Two studies from the Royal Veterinary College's VetCompass project, one of 905,543 dogs and one on the triggers of heatstroke, give the numbers in this table.
| Factor | What the data found | What it means in an apartment |
|---|---|---|
| Exercise | Triggered 74.2% of heatstroke cases with a recorded trigger, and 67.5% of the exercise cases with a recorded activity followed ordinary walks | The walk is the risky hour. Move it to the coolest part of the day, and see the indoor exercise guide for what to do in place of a long midday outing. |
| Shut in a hot building | Rarer, but about 6 times the odds of a fatal outcome compared with exercise cases | This is the home-alone scenario, so the plan for the hours you are out comes first. |
| Flat-faced head shape | About twice the odds of heat-related illness compared with medium-muzzled dogs | Start cooling a pug or a bulldog earlier than you would another dog. |
| Body weight | Dogs over 50 kg (about 110 lb) had 3.42 times the odds of dogs under 10 kg (about 22 lb) | Size is no protection: the heaviest dogs were the ones at higher odds. |
Nine breeds had higher odds than Labrador Retrievers: the Chow Chow, Bulldog, French Bulldog, Dogue de Bordeaux, Greyhound, Cavalier King Charles Spaniel, Pug, English Springer Spaniel and Golden Retriever. The ASPCA explains part of the flat-faced pattern: pugs, Persian cats and similar pets can't pant as well, so they overheat more easily.
Cooling the apartment before the dog needs it
Blinds, airflow and the window-screen rule
Close the blinds on the sunny side in the morning, before the room heats up. Cross-ventilation (windows open on opposite sides, with a fan facing out of one of them) only helps while the air outside is cooler than the air inside, usually early and late. At peak heat, closed windows and drawn blinds keep more heat out than open windows let in.
Check the screens before you open anything on an upper floor. The ASPCA notes that open unscreened windows pose a real danger because pets often fall out of them, so keep unscreened windows and doors closed and make sure screens are firmly secured.
Water, mats and frozen toys
Keep water in more than one spot and refill it on hot days. Cooling mats, damp towels and bandanas are cheap extras, but the sources behind this post don't measure how much they help, so rank them below shade, airflow and timing. If you use water on the coat, let a fan move air across it: a water spray with air movement is one of the methods researchers recommend for heatstroke, and covering a whole dog in a wet towel can block that airflow.
A rubber toy stuffed with wet food and frozen overnight keeps a dog busy through the hot hours. If you use peanut butter instead, read the label: the FDA warns that xylitol, which is dangerous for dogs, turns up in some peanut and nut butters. The guide to human foods that are dangerous for cats and dogs has the full list.
The coat and the walk
Feel free to trim a long coat, but never shave it, says the ASPCA. It also warns that hot asphalt can burn paw pads, one more reason to walk at the coolest hours. The guide to walking a dog in a high-rise building covers a fixed schedule and the elevator side of getting out.
The hours you are out
Being shut in a hot building was a rare trigger in the UK data, but a deadly one: about 6 times the odds of a fatal outcome compared with exercise cases. The examples in the study were central heating left on or gone faulty. A top-floor apartment with the windows shut and no cooling is the summer version of the same trap.
No source used here sets a safe indoor temperature, so don't build the plan around a number. Build it around the worst hour your apartment has. Close the blinds before you leave, test your setup on a warm day while you are home, and if the unit can't be kept cool, the dog shouldn't spend the day in it. A sitter, daycare or a friend's cooler place are the alternatives.
Don't solve a hot apartment with a car ride. According to the National Weather Service, a parked car's interior can heat up 20 degrees in as little as 10 minutes, and cracking the windows gives little if any relief. The ASPCA warns that dogs can die of heatstroke in cars in warm weather of 70°F and up. A dog never waits in a parked car, not even for a quick errand.
If your dog is already overheating
The ASPCA lists heavy panting or trouble breathing, a fast heart and breathing rate, drooling, weakness, stupor or collapse as signs of overheating, and seizures, bloody diarrhea, vomiting and a body temperature over 104°F in severe cases. Cool first and transport second:
- Move the dog off hot floors and out of the sun into the coolest room, with a fan running.
- Cool the dog with cold water. The VetCompass review of cooling methods names cold-water immersion, and a water spray with air movement from a fan or breeze, as the recommended treatments. In an apartment that means the bathtub, or the shower or sink sprayer with the fan aimed at the dog.
- Skip the old rule of tepid water only, which survives despite extensive evidence to the contrary, and don't wrap the whole dog in a wet towel.
- Then get to a vet. Any trouble breathing or a sudden collapse means an emergency clinic right away.
