Eheim Professionel 4+ Thermo External Filter

FRESHWATER ONLY

Experience premium external filtration with integrated heating and smart flow control—designed specifically for freshwater aquariums. Building on the proven advantages of the previous series—powerful performance, optimal energy efficiency, quiet operation, priming aid, and a safety hose adapter—this model adds the innovative ‘Xtender’ button, an integrated heater, and thoughtful maintenance features for effortless, reliable care.

• Additional control function (Xtender) helps counteract blocked fine media by redirecting flow, maintaining biological filtration and extending service intervals.
• Integrated heater for stable, precise water temperature without extra equipment in the tank.
• Square canister for high stability and generous filter volume.
• High flow capacity with low energy consumption and adjustable pump output.
• High‑performance ceramic axle for quiet running and long‑term durability.
• Integrated self‑priming aid for quick, easy startup.
• Safety hose adapter can only be removed when the valves are closed.
• Top prefilter traps large dirt particles, is simple to remove, and easy to clean for longer intervals between deep maintenance.
• Individual filter baskets with Easy Clean grid and fully equipped with original filter media and installation accessories.

Choose the capacity that fits your setup—from medium to larger aquariums—backed by robust pump performance, efficient power draw, and reliable head height for flexible placement. Typical specifications include:

• For aquariums from approx. 120–350 l
• Pump power approx. 950–1,050 l/h
• Pumping head approx. 1.5–1.8 m
• Power consumption approx. 12–16 W
• Filter volume approx. 3.5–5.0 l; prefilter volume 0.5 l
• Integrated heating approx. 210 W
• Container volume approx. 6.1–8.9 l
• Hose Ø (inside) 16/22 mm; Installation height up to 180 cm
• Voltage 230 V
• Freshwater yes; Seawater no

If output drops due to clogged fine media, simply activate the Xtender to sustain filtration performance until the next cleaning—keeping water crystal clear and biological balance intact. With quiet operation, compact footprint, and a suite of safety and convenience features, this thermo external filter delivers clean, healthy water and stable temperature control for thriving aquatic life.

Technical specifications EHEIM professionel 4+ 250T 
external thermo filter with heater for fresh water aquaria from 120 to 250 litres
max. pump output: 950 l/h (adjustable)
pump height: 1.50 m
integrated heater with display 210 watts
filter volume: 3.50 l
prefilter volume: 0.50 l
canister volume: 7.10 l
power consumption: 12 watts
hose size 16/22 pressure and suction side
Dimensions (width x height x depth): 238 x 398 x 244 mm

Technical specifications EHEIM professionel 4+ 350T -2373-
external thermo filter with heater for fresh water aquaria from 180 to 350 litres
max. pump output: 1050 l/h (adjustable)
pump height: 1.50 m
integrated heater with display 210 watts
filter volume: 5.0 l
prefilter volume: 0.50 l
canister volume: 8.90 l
power consumption: 16 watts
hose size 16/22 pressure and suction side
Dimensions (width x height x depth): 238 x 453 x 244 mm