Mercury 400W Plug-In Wall Heater

Mercury 400W Plug-In Wall Heater — Compact Fan Heater

A compact 400W plug-in wall heater with 2-speed fan settings and an adjustable thermostat. Plugs directly into the wall with a rotating plug for convenient access to any socket. Space-saving portable design makes this the right choice for smaller tents or propagation areas where oil-filled radiators would be overkill.

Why growers choose the Mercury 400W Plug-In Heater:

• 400W compact heating — right-sized for small tents (1m - 1.2m) or propagation areas
• 2-speed fan settings — adjust output for different heating needs
• Adjustable thermostat — maintains target temperature automatically
• Direct wall plug-in — no floor space used, fits into any socket
• Rotating plug — fits awkward socket orientations without awkward extension leads
• Portable and space-saving — move between tents or spaces easily
• Quick-warming fan heater — heats up immediately unlike slow-warming oil radiators

Who it's not for:

Fan heaters blow dusty air at plants — if you're running a propagation area with fragile cuttings, an oil-filled radiator gives gentler heat without direct airflow. For larger rooms (2m+ tents or commercial spaces), 400W won't provide enough heat — step up to a LightHouse or Grow Gadgets oil radiator. Not designed for 24/7 continuous running; better for occasional top-up heating.

In stock now — ships same working day from our Staffordshire warehouse with free UK delivery over £100. Pick up in-store at our Stone shop (ST15 0SR) if you're local, or click & collect at checkout.