★ Budget pick 7.8 / 10 · Editorial score

Editorial rating based on manufacturer specs and Amazon catalogue data. We do not trial products ourselves. How we rate

Clatronic RA 3735: 1,500 W oil radiator in slimline design

Prices in euros from Amazon.de, as of 11 June 2026. Prices and availability may differ on Amazon.co.uk.

By Seydhan Cakmak · Editor-in-chief · Updated: · AI-translated from the German original

The Clatronic RA 3735 is a classic oil radiator with 7 fins and three power settings up to 1,500 watts, designed for rooms up to 30 m². A continuously variable thermostat control, overheating protection and a tip-over switch are part of the basic equipment. For anyone looking for a mobile supplementary heater for the bedroom, bathroom or study without spending much.

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Clatronic RA 3735 oil-filled radiator

⌗ Available variants

Clatronic RA 3735 at a glance

In short: the Clatronic RA 3735 scores 7,8/10 in our oil radiator review (from €61). Biggest strength: 3 power settings. Main compromise: high power consumption.

All specifications come from manufacturer data sheets and the Amazon catalogue and were cross-checked before publication. The rating is an editorial overall assessment based on this data; we do not trial products ourselves.

Clatronic RA 3735: what works and what doesn't?

What works well

  • 3 power settings: 600, 900 and 1,500 W can be matched to the room and need, from quiet base warmth to full load
  • Continuously variable thermostat: The dial holds the desired temperature instead of just switching on and off
  • Double safeguard: Overheating protection and a tip-over switch switch the appliance off automatically in an emergency
  • Slimline and mobile: Slim design, castors and a handle recess make moving it between rooms easy

Points of criticism

  • High power consumption: Like any electric oil radiator, the 1,500 W setting draws noticeable power, expensive as permanent heating
  • Manual operation only: No timer, no display, no remote control, temperature is set with a dial
  • 30 m² is optimistic: The manufacturer's figure applies to well-insulated rooms; in an old building plan on it as a supplementary heater

Specifications in detail

TypeOil radiator (mobile, slimline)
Fins7
Power1,500 W
Power levels600 / 900 / 1,500 W
Room sizeup to 30 m²
Temperature controlcontinuously variable thermostat dial
SafetyOverheating protection, tip-over switch
MobilityCastors, handle recess

Build quality & everyday use

What carries the Clatronic RA 3735 in everyday use: 3 power settings (600, 900 and 1,500 W can be matched to the room and need, from quiet base warmth to full load) and Continuously variable thermostat (the dial holds the desired temperature instead of just switching on and off). You have to be honest about the weaknesses: high power consumption. Like any electric oil radiator, the 1,500 W setting draws noticeable power, expensive as permanent heating.

If you set the device up to save space, make sure it stands on a stable, level surface with some air around it. This protects the mechanics and electronics in continuous use.

“Clatronic RA 3735 Oil Radiator: 3 power settings and a continuously variable thermostat, with high power consumption as the trade-off. At 7.8/10 a fair deal from €61.”
The MiniHaushalt.de editorial team

Who is the Clatronic RA 3735 suited to? (Buying advice)

Perfect for:

  • ✓Bedroom, bathroom or office as a supplementary heater
  • ✓small to medium, well-insulated rooms
  • ✓anyone who wants to wheel a mobile heater between rooms
  • ✓Price-conscious buyers who don't need smart functions

Less suitable for:

  • ✕as the sole permanent heating (electricity costs)
  • ✕anyone who expects a timer, display or app control
  • ✕large or poorly insulated rooms

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Frequently asked questions about the Clatronic RA 3735

What room size is the Clatronic RA 3735 enough for?
The manufacturer states up to 30 m². Realistically it reliably heats small to medium, well-insulated rooms; as the sole heating for large or poorly insulated rooms it is undersized.
How much power does the oil radiator use?
On the highest setting it draws 1,500 W. The thermostat and the 600/900 W settings can reduce consumption, but as permanent main heating, electric heating remains expensive.
Is the oil radiator safe when it runs unattended?
It has overheating protection and a tip-over switch, which switch off at too high a temperature or if knocked over. It does not, however, offer a timer for automatic switch-off after a set time.
7.8 / 10 · Budget pick

Verdict: is the Clatronic RA 3735 worth it?

A solid option with a clear profile: if you can live with high power consumption, from €61 you get one thing above all: 3 power settings. Best suited to: bedroom, bathroom or office as a supplementary heater.

If you want to compare alternatives, you will find detailed data and reviews on our oil-filled radiators comparison page.

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