Our vented dryer has just stopped working so I'm looking at options. We have both washer and dryer in a tall cupboard under our stairs and I'd prefer not to replace with vented as a kitchen extension means the vent hose has a long journey out under our floor without access. I've been looking and there's a suggestion that condenser dryers aren't suitable for use in enclosed cupboards. Our friends machine kicks out a huge amount of heat so I can understand why. I'd wondered if the same applies to heat pump dryers which seem more efficient? There is about 2 feet of space above the dryer but I won't want to leave the door open when it's running as it will obstruct an entrance. Thanks in advance