Type and Size
Condenser dryers collect the moisture from your laundry and store it in a removable water tank, which you will need to empty when it fills up. As you do not need to attach a hose to a vent, like you do for vented dryers, you have more freedom over where a condenser dryer can be installed in your home.
Heat pump condenser tumble dryers are about twice as energy efficient compared to regular condenser tumble dryers, but tend to cost a lot more in the shop. Similar to regular condenser tumble dryers, they take the moisture from your laundry and deposit it all into a water tank, which will need to be emptied when it gets full.
This is a vented tumble dryer, so the moisture taken from your laundry will be pumped out through a hose that either needs to be connected to a vent or hung out of a window. This will limit where you can install this type of dryer in your home.
There are only a few gas tumble dryers on the market. Currently you can only buy a vented dryer that runs on gas, not a condenser model. The main benefit to having a gas dry is the running cost - generally, they cost about half as much to run compared to regular electric vented and condenser models, making them as efficient as heat pump condenser models. However, gas dryers need to be installed and maintained by a Gas Safe Engineer with a special qualification, and cost of installation will vary. Make sure you get a installation quote from an engineer before you buy, not after.
The maximum amount of clothes you can dry at once using the cotton dry programs/settings. Capacity is always measured in the weight of dry clothes - as a rough guide, a kilo of clothes could be a men's cotton shirt and a pair of jeans - or just four cotton shirts.
Most tumble dryers are white, but you can find stainless steel, silver, graphite and black machines.
The maximum amount of clothes you can dry using the synthetics program or setting. This capacity will always be smaller than the max/cotton capacity, so be careful not to overfill the drum. Capacity is always expressed as the weight of dry clothes.
The height of the tumble dryer in cm. Most models will be 84-85cm high, unless they are compact models, which are much smaller.
How wide the tumble dryer is in cm. It is rare to have a tumble dryer that is not 60cm wide unless it is a compact dryer.
How many cm deep this tumble dryer is. For models we've tested, this will include the space at the back taken up by tubes. Depth can vary from 50-70cm, though most models we've tested are around 63-65cm deep.