Lighthouse 2KW Grow Room Heater

Even, thermostatic heat across the whole grow room, not just one corner

The Lighthouse 2KW Grow Room Heater radiates warmth evenly across an entire tent or grow room rather than blasting a single spot, holding both air and root-zone temperatures where plants want them on cold nights. It's a solid, metal-cased unit with a proper thermostat and 1000W and 2000W heating modes, so it maintains a set temperature instead of overshooting and stressing the crop. A compact 23cm x 19cm x 32cm body tucks into a corner and covers up to 20m2.

Key Benefits

• Two heating modes (1000W / 2000W) match output to the size of the space and the season, with a fan-only setting to move air without adding heat.
• Thermostatic control senses room temperature and cycles the heater to hold it steady rather than swinging hot and cold.
• Even radiant heat warms the whole room so plants furthest from the unit stay as warm as the closest.
• Covers up to 20m2, with additional Lighthouse heaters added in parallel for larger rooms.
• Overheat protection cuts power if the unit runs too hot for safe, unattended running.
• Ready to run, supplied complete with a power lead.

Is a cold grow room stunting growth overnight?

A space that drops too low overnight slows metabolism and root activity, and a cold root zone is a common cause of sluggish growth and weak roots even when light and feed are dialled in. Cold, damp air also sits in the canopy and pushes humidity up, adding mould risk. Heating the whole room evenly keeps temperatures consistent everywhere, not just in front of the unit.

How to Use

• Stand on a flat, stable, non-flammable surface, clear of plants, drip lines and tent fabric.
• Plug in with the supplied lead and set the thermostat to your target, typically the low-to-mid 20s Celsius depending on stage.
• Choose 1000W for smaller tents or mild nights, 2000W for larger or colder rooms, or fan-only to circulate air.
• For spaces over 20m2, add a second unit rather than running one heater flat out.