This is a well-engineered, powerful unit from a company respected for their quality record and should be more than capable of controlling the humidity of the average five bedroom house.
Its rated to extract 21 litres per day at 32C and 90% relative humidity. At UK temperatures the machine will extract a lot less, but enough to control the humidity of a large family home as described in the paragraph above. As with all refrigerant dehumidifiers, the machine will extract less and less water as the temperature drops, so try to keep your home above 15C to get the best out of it. Having said that, Ebac say that the unit will keep working down to 3C and as youd expect, theres an automatic defrost setting that will switch on with increasing frequency as the temperature drops to maintain the efficiency of the unit.