Infrared vs Convection Heaters: What Buyers Need to Know

A distributor asked me last month why his container of convection panels wasn't moving. He'd also ordered a small run of infrared units. The infrared ones sold out in three weeks. The convection panels sat. Same wattage. Same price point. Different physics.

If you're sourcing electric heaters, you need to understand what each type actually does in a room. Not the marketing version. The version that determines whether your customer returns the unit or buys another one next season.

How they heat is different

Convection heaters warm the air. That air rises, circulates, and eventually the room feels warmer. It's indirect. A 2000W convection panel takes 20 to 30 minutes to make a noticeable difference in a 20-square-meter room. The air near the ceiling gets warm first. Your feet stay cold longer.

Infrared heaters warm objects and people directly. The electromagnetic waves travel through air without heating it much. You feel warmth on your skin within seconds of turning it on. It's the same principle as sunlight in winter. The air temperature might still be 12°C, but you feel comfortable standing in front of it.

This matters for your end customer. If they're heating a workshop or garage where they work in one spot, infrared wins. If they need the whole room at a stable temperature for hours, convection is better.

The real comparison numbers

Let's talk running cost, because that's what buyers search for. An electric heater running cost depends on wattage and how long it runs. A 1500W heater on for 8 hours uses 12 kWh. At £0.30/kWh in the UK, that's £3.60 per day. In Germany at €0.40/kWh, it's €4.80.

Infrared heaters often cycle on and off more because they heat people, not air. In a garage, a 1200W infrared unit might run 4 hours out of 8. That's 4.8 kWh. Cheaper to run for spot heating. But if you leave it on all day in an office, the savings disappear.

Convection heaters with a thermostat maintain temperature better in insulated rooms. Oil-filled radiators hold heat after the element switches off, so they cycle less. That's why oil filled radiator vs convection heater debates usually end with: oil-filled for bedrooms and offices, convection for quick heat in small spaces.

Where each type fits

Infrared works for: garages, workshops, outdoor patios, large uninsulated spaces, and anywhere you need heat fast without waiting. A 12v electric heater for RV campervan use is almost always infrared or resistive wire, because you're heating a small space and you want immediate warmth.

Convection works for: bedrooms, living rooms, offices, and any space where you want silent, even heat. A silent electric heater is usually a convection panel or oil-filled radiator. No fan noise. No clicking. Just warm air rising.

Wall mounted electric heaters are typically convection panels. They save floor space and look cleaner. For bathrooms, you need IP24 rating minimum. That's splash-proof, not waterproof. Don't let your buyers confuse the two.

What buyers actually ask

When I talk to procurement managers, they ask three things. What's the MOQ? 200 pcs standard for most models. What's the lead time? 15 to 45 days depending on whether you need custom packaging or just a private label electric heater with your logo. And what certifications do you have? CE, RoHS, UKCA, and ERP compliance for EU energy labeling.

ERP matters more than most buyers realize. If your heater doesn't meet the Lot 20 requirements for local space heaters, you can't legally sell it in the EU. We've seen containers rejected at customs because the energy label wasn't correct. That's a costly mistake.

The thermostat question

Best electric heater with thermostat is a search phrase that means different things to different people. A mechanical thermostat clicks on and off at a set temperature. It's cheap and reliable. A digital thermostat is more accurate, usually within 0.5°C. A wifi smart electric heater lets the user control it from a phone, set schedules, and monitor energy use.

For B2B buyers, wifi adds cost. The module alone is $3 to $6 depending on the chipset. If your market is tech-savvy and willing to pay, it's worth it. If you're selling to budget-conscious retailers, skip it. A good digital thermostat is enough.

Safety and certifications

Electric heater safety tips aren't just for end users. They're for you. Make sure your supplier has tip-over switches, overheat protection, and thermal fuses. These are non-negotiable for CE certification. We've been building heaters since 2009 and never shipped a unit without them.

For infrared heaters, check the element quality. Quartz tubes are cheaper but fragile. Carbon fiber elements last longer and produce a softer heat. The cost difference is about $2 per unit at the factory level. Worth it for markets with high return rates.

The honest takeaway

There's no single best electric heater. There's only the right heater for the job. If you're sourcing for a general retailer, carry both convection and infrared. Let the customer choose. If you're sourcing for a specific niche, like garage heaters or bathroom heaters, go deep on one type and get the certifications right.

Don't chase the cheapest unit. Chase the one that won't come back as a return. Returns cost more than the margin difference between a $12 heater and a $15 heater. Every time.