De'Longhi Radia S TRRS1224EG Verdict

Who it fits

The De'Longhi Radia S TRRS1224E.G is for buyers who want fan-free sustained room heating with digital controls and do not need app connectivity.

Its strongest case is the complete conventional oil-column package: 12 fins, three power settings, electronic thermostat, 24-hour programmable timer, child lock, verified tip-over/safety thermostat controls and a seven-year warranty.

Best for

Choose it for bedrooms, studies or medium-to-larger enclosed rooms where the heater will run for longer sessions and fan noise is less acceptable than slower oil-column response.

Not ideal for

It is a weaker fit for quick personal spot heating, frequent stair carrying, app scheduling or anyone who wants year-round fan airflow.

What changes the decision

Choose the heating method before the wattage

Radia S is an oil-filled radiator. Its defining behaviour is fan-free radiant/convection heat with thermal mass, not the fact that its maximum input is 2400W.

That makes it more coherent for longer, quieter heating sessions than for someone who wants a burst of directed warm air immediately after switch-on.

The 2400W/1000W range is useful control context

De'Longhi specifies 2400W maximum and 1000W minimum, with three power settings.

Those settings change instantaneous output. PIQSY does not infer that the highest wattage makes Radia S a universally better heater, or that a lower setting guarantees lower total energy consumption over a whole evening.

Digital control is the reason to choose this over a basic oil column

The heater provides an electronic room thermostat and 24-hour programmable timer, plus Eco function and child lock.

That gives a strong non-connected workflow: set temperature and schedule locally without depending on Wi-Fi, a cloud service or a phone. Buyers who specifically want remote scheduling should compare Dragon5 Connect instead.

Current safety evidence is unusually explicit

De'Longhi's current Australian exact-model page lists an automatic tilt/tip-over switch and safety/overheat thermostat. That is stronger evidence than a generic “safe heater” label.

No portable heater should be treated as risk-free. Installation clearances, power-point use and the manufacturer's operating instructions remain part of safe ownership.

Weight is the main portability penalty

At 15.59kg, Radia S is movable on castors but not a lightweight carry heater.

That distinction matters for stairs. “Portable heater” here means it can roll between rooms on one level; it does not mean it is convenient to lift repeatedly.

Room-size and warranty claims need different confidence treatment

De'Longhi lists a 72m³ working capacity and a seven-year warranty. The warranty is a written support term; the 72m³ figure is manufacturer room guidance rather than an independent guarantee of comfort in every insulated or poorly insulated room.

PIQSY therefore treats the room figure as sizing context, not proof of heating performance.

Who should choose something else

Choose the De'Longhi Dragon5 Connect when the same broad oil-column use case also needs Wi-Fi/app scheduling and more precise connected control.

Choose the Ausclimate ACPH915 when wall mounting and a lighter fan-free panel format matter more than oil thermal mass.

Choose a ceramic fan heater when the priority is faster perceived warmth and easy carrying, not long fan-free sessions.

PIQSY conclusion

Who should buy it

Choose Radia S when fan-free sustained heat, digital thermostat control, a 24-hour timer and a long written warranty solve the actual problem without needing Wi-Fi.

Who should not

Skip it when quick directed heat, light carrying or app scheduling matters more than oil-column comfort.