Which portable heater is best in 2026?
Quick answer: to heat a small room fast (bathroom, home office), a 1,500–2,000 W ceramic heater is the most practical. For a bedroom, an oil-filled radiator is silent and keeps the warmth steady. For the living room or daily use, watch the running cost: every electric heater turns 1 kWh of electricity into 1 kWh of heat — a heat pump (hot/cold air conditioner) delivers the same warmth for about a third of the cost.
The most popular portable heaters compared
| Model | Type / Power | Best for | Highlight | Price / Store |
|---|---|---|---|---|
| Cecotec ReadyWarm 2000 W budget pick |
Ceramic · 2,000 W | bathroom, home office | Heats up in seconds, compact and affordable; a popular brand in Portugal. | Check price → |
| Rowenta Instant Comfort fast |
Ceramic · 2,400 W | rooms up to ~25 m² | Powerful with a thermostat; great for warming the living room in the evening. | Check price → |
| DeLonghi Oil-Filled Radiator bedroom / silent |
Oil · 2,000–2,500 W | bedrooms, overnight use | Completely silent with steady, gentle warmth — the classic for sleeping. | Check price → |
| Orbegozo Convector cheapest |
Convector · 2,000 W | medium rooms | Simple and cheap; warms the air gradually and evenly. | Check price → |
| Portable heat pump most efficient |
Hot/cold · ~2.6 kW of heat | living room, daily use | Uses ~3× less electricity than an electric heater for the same warmth — and dehumidifies. In Lisbon you can rent one instead of buying. | Rent from us → |
Power ratings are indicative; always confirm exact specifications and current pricing in each store.
Ceramic, oil-filled, convector or heat pump?
| Type | How it heats | Best for |
|---|---|---|
| Ceramic | Blows warm air instantly | Heating small rooms fast; bathrooms |
| Oil-filled radiator | Radiant heat, slow and steady | Bedrooms — silent, ideal overnight |
| Convector | Natural circulation of warm air | Occasional use in medium rooms, low budget |
| Heat pump | Moves heat from outside (doesn't generate it) | Daily use and bigger rooms — ~3× more efficient |
All electric heaters (ceramic, oil, convector) share the same physics: 1 kWh of electricity = 1 kWh of heat. The difference between them is comfort and speed, not your bill. Only a heat pump breaks that rule, because it doesn't generate heat — it moves it from the outside air into your home.
How much does a heater cost to run?
A 2,000 W heater running 6 hours a day uses 12 kWh — about €2.40 per day or ~€72 per month (at ~€0.20/kWh). A portable heat pump delivers the same warmth drawing around 700–900 W: ~€25–30 per month for the same use. If you heat your home daily from November to March, the difference pays for the rental several times over. See also our electricity cost guide.
AC Rental Lisbon's recommendation
For occasional use, a ceramic heater with a thermostat (small rooms) or an oil-filled radiator (bedroom) does the job cheaply. To heat your living room every day, do the electricity maths: a heat pump uses ~3× less — and since serious cold in Lisbon lasts 3–4 months, renting one for the winter usually beats buying it (and you don't store it the rest of the year).
Cold and damp go together
Lisbon winters aren't just cold — they're cold and damp. Mouldy walls, laundry that never dries, and that chilly feeling even with the heater on. An electric heater does nothing about humidity; a heat pump dehumidifies while it heats, and for serious mould a dedicated dehumidifier is the right tool.
Frequently asked questions
What is the best portable heater for a bedroom?
An oil-filled radiator of 1,500–2,000 W: it's completely silent, keeps the warmth steady through the night and doesn't dry the air as fast as a ceramic heater.
Which heater uses the least electricity?
Among electric heaters, consumption is identical for the same heat output (2,000 W = 2,000 W). The real saver is a heat pump (hot/cold air conditioner): it delivers the same warmth for about a third of the electricity.
Ceramic or oil-filled heater?
Ceramic to heat a small room fast; oil-filled for long, silent comfort in the bedroom. For daily use in bigger rooms, consider a heat pump.
Is renting heating in Lisbon worth it?
If you only need heat from November to March, yes: a rented heat pump costs from €250/month, heats a whole living room using ~3× less electricity than an electric heater, and gets collected at the end of winter — no purchase, no storage.
Does an air conditioner also heat?
"Hot and cold" models do — they work as a heat pump in winter and as an air conditioner in summer. That's the unit we rent out for heating.