Vents Air duct heater NK 160 (Ø160MM/2.4KW IP40)

An electric duct heater for round 160 mm ducting, 2.4 kW across two 1.2 kW elements. Minimum airflow 180 m³/h, current draw 10.4 A.

The NK 160 is the first in this range at 2.4 kW. That brings a practical question the smaller models can still shrug off: what does it draw from your installation?

10.4 amps is a real load

This heater draws 10.4 amps at 230 volts. For comparison: a typical domestic final circuit is protected at 16 amps, and this device is rarely the only thing on it.

So you need to know beforehand what else sits on that circuit. A 10.4 A heater together with lighting, a fan and whatever else the room holds comes close to the limit easily, and then the breaker goes at the moment everything is on at once.

What to do about that is a matter for your electrician rather than a product page: a dedicated circuit, a different distribution, or a check that the existing wiring can take it. The point here is that it is a question to ask before ordering, not after the heater is on the wall.

Consider continuity as well. This is not a device that cuts in briefly like a kettle: a duct heater can draw its full power for hours on end. Wiring and protection have to be rated for that.

The connection should be made by a qualified electrician, following the Vents manual, and arranged so the heater cannot operate without the fan running.

Technical Specifications:

• Duct: 160 mm
• Power: 2.4 kW, two 1.2 kW elements
• Current: 10.4 A
• Minimum airflow: 180 m³/h
• Supply: 230 V / 50 Hz, single phase
• Ingress protection: IP40
• Weight: 2.9 kg

Frequently asked questions

Can it run on an ordinary circuit?
That depends what else is on it. 10.4 A continuously is a lot for a shared circuit; have an electrician assess it.

Why is that different from a kettle?
A duct heater can draw full power for hours. Wiring and protection have to be rated for it.

What is the minimum airflow here?
180 m³/h. Below that the heater must not operate.

How much warmer does the air get?
At 2.4 kW and 300 m³/h, around 24 degrees, as an approximation without duct losses.