There's a particular kind of magic to an outdoor evening that stays warm even after the sun's gone down — string lights on, a heater glowing nearby, everyone still outside instead of drifting in. But a patio heater is still a heat source and, for gas models, a combustion appliance, which means a few minutes spent on setup and habits pays off all season long. Here's what to know before you switch yours on this fall.
Choose the Right Heater for Your Space
Not every heater suits every patio. Propane and natural gas heaters throw a lot of heat and work well in open or semi-open spaces with strong natural airflow, but they produce carbon monoxide as a byproduct of combustion, so they need real ventilation — never run one in an enclosed porch, garage, or any space without regular airflow. Electric and infrared heaters skip the combustion question entirely, which makes them a better fit for covered patios, smaller spaces, or anywhere ventilation is limited. If you're not sure which is right for your layout, that's worth a conversation with our team before you buy rather than after.
Give It Room to Breathe
Every heater needs clearance, and it's more than people usually assume. Keep at least 3 feet of open space on all sides — away from umbrellas, furniture, curtains, plants, and anything else that can catch a stray gust of heat. If your heater sits under a pergola, gazebo, or covered patio, that clearance applies to the ceiling and walls too. It's an easy rule to forget when you're arranging seating around a heater for maximum warmth, but the clearance is what keeps that seating (and everyone in it) safe.
Set It Up on Stable, Level Ground
A tipped heater is the fastest way for an evening to go wrong. Set yours on flat, level ground, and look for a model with a built-in anti-tilt or tip-over switch that shuts the unit off automatically if it's knocked over — most quality heaters include one, but it's worth confirming before you buy. On a wooden deck, a heat-resistant mat underneath adds another layer of protection. And on breezy evenings, anchor or weight down freestanding heaters so wind can't do the tipping for you.
Never Leave It Unattended
Treat a patio heater the way you'd treat a lit grill or fireplace — on and unattended don't mix. Keep kids and pets at a comfortable distance, keep flammable materials (napkins, table linens, decor) well clear of the heat source, and if you're using a gas model near any enclosed or semi-enclosed space, a carbon monoxide detector is a smart, inexpensive extra layer of protection. When the evening's over, turn the heater off and shut the gas supply completely rather than just letting the flame burn down.
Cover and Store It Properly
Between uses, a fitted cover keeps moisture and debris out of the heater's components — both of which shorten its lifespan and can affect safe operation over time. If you're storing a propane tank, keep it upright, away from direct sunlight and any heat source, in a well-ventilated spot like a garage or shed rather than sealed away in a closet.
Keep Up with Maintenance
A few minutes of upkeep goes a long way. Clean burners and air passages periodically so nothing restricts airflow, and if you're running a gas model, do a quick soapy-water check on the connections every so often — bubbling means a leak worth addressing before you light it again. Plan on a professional inspection annually, especially if the heater sees regular use through the cooler months.
Warm Nights, Handled Right
A patio heater should make the season longer, not riskier. Give it space, keep it stable, watch it while it's running, and store it properly between uses — after that, it's just about enjoying the extra weeks outside.
Shopping for a heater or fire pit this fall? Browse Today's Patio's heating and fire collection or visit one of our Arizona showrooms — our team can help match the right heater to your space, covered or open.
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