Shub Heats — Electric room heaters and immersion water | shubheats.com
Three heater types, three different relationships with time: one warms in minutes and forgets, one warms slowly and remembers, one never heats the air at all.
Fan heaters are rated 1,500-2,400 W and move 200-400 m³ of air per hour. They warm a room in 5-10 minutes, but the heat is stored in the air itself and is lost within minutes of switching off. They are also the only type here that moves air mechanically, so airflow noise is part of the package.
Oil-filled radiators are rated 1,500-2,500 W and need 15-30 minutes to bring their fins to about 60-90 °C. After warm-up they cycle on the thermostat instead of running continuously, and the hot fins keep releasing stored heat between cycles — the steadiest option for overnight bedroom use.
On narrow screens, swipe or scroll the plate sideways.
Halogen heaters are rated 400-1,200 W and work by infrared, warming people and objects within 1-2 seconds instead of heating the whole air volume. They are spot heaters: excellent where you sit, useless for raising the temperature of a whole room.
Running cost does not decide between them. At equal wattage every type converts electricity to heat one-for-one, so a 1,500 W fan and a 1,500 W oil radiator bill identically per hour at your tariff of 0.15-0.30 USD per kWh. What differs is how long the warmth persists after the power stops.
Since March 2021 the EU energy label for space heaters runs A-G, and most fan heaters and fluid-filled radiators fell to class D or lower under the rescale — so the label letter is a weak tiebreaker. Wattage matched to your room size, from the size chart, plus the safety checklist, decides far more.
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