Short answer: yes — infrared patio heaters keep working in winter, because they never relied on warm air in the first place. Long answer: how warm you actually feel at 25°F depends far more on wind, shelter, and mounting than on the wattage printed on the box. This guide sets honest expectations before you spend a dollar.
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Why infrared works when the air is freezing
A propane mushroom heater or a fan heater warms the air — and outdoors in January, that warm air is gone before it reaches your shoulders. Infrared elements work like the sun: they radiate energy that turns into heat only when it hits people, furniture, and floors. Cold air between you and the heater barely matters. That is why you can feel a ski-lodge deck heater on your face in single-digit temperatures.
The flip side: infrared warms what it can see. Step out of the beam and winter is right there again. Below freezing, plan heaters over every zone where people actually sit — not one unit “for the patio.”
The three factors that decide winter comfort
- Wind is the enemy — shelter is the fix. Radiation cannot be blown away, but the warmth it creates in your skin and clothing can be stripped off by moving air. A sheltered patio at 20°F often feels better than an exposed one at 40°F. Windbreaks, roofs, and side screens multiply every watt you pay for.
- Distance and mounting height. Intensity falls quickly with distance. Mount at the manufacturer's recommended range — typically roughly 7 to 9 feet for mid-size electric units — and angle the element toward the seating zone. A heater tucked high in a vaulted ceiling looks tidy and warms nobody.
- Coverage honesty. In real winter, treat published coverage figures as best-case for sheltered spaces. For below-freezing comfort in a partially open space, plan roughly twice the wattage you would need on a mild fall evening — or simply plan one heater per seating zone.
Electric vs. gas below freezing
Both technologies work in the cold, with different winter-specific caveats. Electric units have no fuel to gel, no pilot to blow out, and start instantly at any temperature — but most 2,000 W+ models need a dedicated 208–240 V circuit from a licensed electrician. Propane output drops noticeably in hard cold because tank pressure falls as temperature drops — a half-empty tank on a 15°F night can struggle to feed a high-output burner. Natural gas avoids that problem but needs a fixed line. For roofed and enclosed winter spaces, electric is usually the cleaner answer; for open, unwired spaces, gas still earns its place.
Setups that hold up in real winter
- Covered patio or screened porch: the best case. A Bromic Tungsten Smart-Heat Electric (from $798) over each seating zone delivers ski-lodge comfort deep into winter.
- Pergola with open sides: workable with more wattage and wind screening. The slim Platinum Smart-Heat Electric mounts tight to slats and beams; add side curtains or glass screens before adding more heaters.
- Dining zone under a roof: the Eclipse Smart-Heat Pendant combines light and heat directly over the table — the warmest seat in the house is suddenly outside.
- Open, exposed terrace: be honest with yourself — this is gas territory or a case for two-zone electric plus serious windbreaks. Browse the full electric patio heater lineup and call us before guessing.
On milder days, a Smart-Heat dimmer controller lets you run the same heaters at partial output instead of cycling them on and off — more comfort, lower bill.
Frequently asked questions
Down to what temperature do infrared patio heaters work?
There is no cutoff — the physics work at any temperature. What changes is how much shelter and wattage you need for the beam to outrun the cold on exposed skin. Sheltered spaces stay genuinely comfortable well below freezing.
Can snow or rain damage them?
Quality outdoor-rated units like Bromic's are built for weather exposure and carry ingress-protection ratings for rain and snow. Check the specific model's rating and clearances in its manual — and never enclose a gas unit beyond what the manufacturer allows.
Should I leave the heater on to “pre-heat” the patio?
Five to ten minutes ahead is plenty — infrared warms surfaces quickly, and pre-warmed chairs and flooring re-radiate that heat. Running it longer mostly warms the neighborhood.
What does Domaform actually ship?
The heater as described on its product page, with manufacturer list pricing, free curbside freight to the lower 48, and a specialist on the phone before and after delivery. Controllers are sold separately.
Written by the Domaform Outdoor editorial team — the specialist dealer staff who size and quote these systems daily. We are an authorized Bromic Heating dealer; we never publish invented reviews or discounts.