Keilini 
Updated October 2026 · Written by the Keilini Heater Pro UK team
Quick answer
Do energy saving heaters really work? They save energy through control features and how you use them, not by making more heat per kWh.
Features that save energy
- Thermostat – stops heating once the room reaches temperature
- Timer – no accidental all-night running
- Fast heat-up – no need to leave it on in advance
- Directed airflow – warms you, not the ceiling
Zone heating
Zone heating means only heating the rooms you're using. Pair a portable heater with a lower central heating setting and you can reduce total energy use.
Our pick for warming one room
Keilini Heater Pro
Ceramic PTC · warm in ~3s · 36–45dB · tip-over & timer shut-off
£59.98£119.98Save 50%
See packs & prices- Free UK delivery
- 30-day returns
- Secure checkout
Where Keilini Heater Pro fits
Keilini Heater Pro is a compact ceramic PTC fan heater. It starts producing warm air in around 3 seconds, spreads it through a 90° grille, and runs at roughly 36–45dB. A built-in thermostat holds your chosen temperature, a tip-over switch cuts power if it is knocked over, and a timer switches it off after 1–12 hours.
It is designed to warm the room you are in — not to replace central heating for a whole house.
Our pick for warming one room
Keilini Heater Pro
Ceramic PTC · warm in ~3s · 36–45dB · tip-over & timer shut-off
£59.98£119.98Save 50%
Or 3 for £139.97 — £46.66 each.
See packs & prices- Free UK delivery
- 30-day returns
- Secure checkout
Frequently asked questions
Do energy saving heaters really work?
They save energy through control features and how you use them, not by making more heat per kWh.
How much can I save?
It depends on your home, tariff and habits. Use our calculator to estimate your own costs.