Infrared garage heaters

Radiant (infrared/quartz) heat warms people and surfaces directly, so it still feels warm right where the door is open or a draft cuts across the floor. Forced-air heats the room's air, which a big door opening or a leaky envelope keeps flushing outside. A drafty shop or a bay with the door up often does better on radiant; a fully enclosed garage that needs even heat throughout does better on forced-air.

Why the door matters more than the wattage

A forced-air heater — a 240V fan-forced unit or a vented gas unit heater — raises the temperature of the air in the room, then relies on that warm air staying put. Open a 16 ftCComputed by our engineEXAMPLE_A_INPUT.garageDoors[0].w — lib/planner/fixtures.tsReport a problem garage door and the air it just heated leaves in minutes; the heater keeps working against a load the planner's 23 %CComputed by our engineheatLossDesign() on EXAMPLE_A_INPUT — garage_doors share of design loadReport a problem door-loss share already accounts for.

A radiant heater skips that step. It heats the person, the workbench, and the slab under your feet by direct infrared, the same way sunlight warms your arm on a cold day before it warms the air around it. Cut the air moving and the heat still lands.

The comfort-equivalent assumption

BayHeat's planner models this as a labeled assumption, not a logged result: because radiant output reaches people and the slab directly, it treats radiant heat as feeling like forced-air heat run about 5 °FEAn estimate, labeled as an assumptionplanner-engineering.md §7, radiant comfort-equivalent assumption: target − 5°F for radiant, applied in lib/planner/heatLoss.tsReport a problem warmer than the thermostat reading. On BayHeat's standard worked example — a 24×24 ft attached 2-car garage in Chicago — holding 55 °FCComputed by our engineEXAMPLE_A_INPUT.targetTempReport a problem by forced-air feels comparable to holding about 50 °FEAn estimate, labeled as an assumptionEXAMPLE_A_INPUT.targetTemp − 5°F comfort-equivalent assumptionReport a problem of radiant air temperature — nobody has logged this with a thermal-comfort survey in this garage, so treat it as a modeled estimate, not a measurement.

The two radiant classes on the market

Both run on electric resistance, so neither needs venting — the tradeoff is coverage area, not combustion safety.

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Where radiant alone falls short

• Why not a 240V quartz/tube infrared ceiling heater (3-6kW)? A fully enclosed, occupied garage that needs even heat throughout — a finished workshop you sit in for hours — is better served by forced-air or a mini-split. Radiant only warms what's in its direct line of sight; the far corner of a closed room stays cold under a spot infrared element.

Radiant panels also do nothing for the air itself, so a garage that needs to keep tools, paint, or stored goods above a minimum temperature — not just a person working in it — needs forced-air or a heat pump instead.

Safety

For a garage sized from your own dimensions, run the garage heater calculator →. For every wall-listed electric class side by side, see wall-mount garage heaters →.