Infrared Heater vs Convection: Which to Stock for Your Market

A distributor in Germany asked me last month why his infrared patio heaters were collecting dust while his convection panels sold out. Same warehouse, same customers. The difference wasn't the price. It was the use case. He'd been selling infrared to people who wanted to heat a whole living room, and convection to people who wanted to feel warm in ten seconds on a balcony. Both products work. They just don't work in the same place.

How they actually heat

Convection heaters warm the air. A wall-mounted panel pulls cold air in the bottom, heats it over a finned element or oil reservoir, and pushes it out the top. The room gets warm, but it takes 15 to 30 minutes for a 20 m² space. Turn it off and the air cools down. That's physics, not a defect.

Infrared heaters warm objects and people directly. The element hits 300–500°C and throws radiant heat. You feel it on your skin within seconds. But the air around you stays cold. That's why an infrared heater in a drafty workshop feels great on your face and useless on your feet.

Where each one wins

Convection is the right call for sealed rooms you occupy for hours. A 2000W panel will hold a 20–25 m² bedroom or office at 20°C if the insulation is decent. Oil-filled radiators do the same job slower, but they keep radiating after the power cuts, which matters in places with unstable grids. Buyers searching for an oil filled radiator vs convection heater usually want to know which is quieter. Oil-filled wins on silence because there's no fan. Convection panels with fans are cheaper but you hear them.

Infrared is the right call for open or semi-open spaces. Garages, workshops, patios, warehouses, church halls. Anywhere the air escapes faster than you can heat it. A 1500W infrared unit can make a 3 m² work zone comfortable in a 60 m² garage. A 1500W convection heater in the same garage is a paperweight.

The wattage trap

New buyers fixate on wattage. More watts equals more heat, right? Not exactly. A 2000W infrared heater and a 2000W convection heater draw the same power. But the infrared one only heats what it points at. If you're stocking for a market where buyers search for an energy efficient electric heater, don't push infrared as a whole-room solution. It isn't. Push it as a spot heater and you'll get fewer returns.

For low wattage electric heater searches, the sweet spot is 400–800W convection panels for bathrooms and small offices. These run on a standard 10A circuit. Infrared at that wattage is almost useless unless the person is sitting 50 cm away.

Thermostats and controls

A best electric heater with thermostat is not one product. It's a category. Mechanical thermostats are cheap and drift by 3–4°C. Digital thermostats hold within 1°C. For private label electric heater programs, the thermostat is where you differentiate. Add a 7-day timer and you can sell into the UK market where ERP lot 20 rules require smart controls on certain heater types. Miss that and your container sits at Felixstowe.

WiFi smart electric heater models are growing in the EU and North America. But don't assume every buyer wants an app. A procurement manager for a hotel chain told me he'd pay extra for a heater with no WiFi, because guests change settings and staff can't reset them. Know your channel.

Safety and certification

Infrared heaters need tip-over switches and overheat cutoffs. Convection panels need thermal fuses. Both need CE, RoHS, and UKCA if you're selling into the UK. For bathroom units, IP24 is the minimum. Don't let a supplier talk you into IP21 and call it splash-proof. It isn't.

MOQ for most of our lines is 200 pcs. Lead time runs 15–45 days depending on whether you need custom tooling, packaging, or a new control board. If you're sourcing an OEM electric heater manufacturer China for the first time, ask for the test reports before you ask for the price. A cheap heater that fails a 10,000-cycle thermostat test will cost you more in returns than the unit price.

One honest takeaway

Stop asking which technology is better. Ask where the heater will sit. If it's a sealed room with people in it for hours, stock convection. If it's a garage, patio, or workshop where the air moves, stock infrared. If you try to sell one as the other, your customers will figure it out in January. And they won't come back in February.