Could you google the operation manual and see what the minimum requirement are for space around the machine?
“Tumble Dryers Need Air To Breath
A tumble dryer needs a ready supply of cool (not too cool and not too warm) air to "breath".
It has to take air in that is cooler than the air in the dryer and it also has to be able to expel that air once it's heated and, even on a condenser or heat pump condenser tumble dryer, that air which is expelled will have some moisture in it, just as a vented dryer expels the air with moisture in it out the vent.
That means a few things for you to consider when you set out to buy a new tumble dryer.
The first is that putting a condenser or heat pump dryer in a confined space with little or a restricted supply of fresh air is a non-starter. You cannot put it in a cupboard and close the door for example. As an absolute minimum you should really have the dryer in a room that has at least 3m² with a fresh supply of air, even an open door to an adjacent room or an open window will do.
If you don't do this then all that happens is that the dryer ends up recirculating the air and, in the process, heating it up. With condenser based dryers this just kills the efficiency of the machine meaning you can end up using way more electricity than you probably realise.
Air Too Warm To Allow Correct Operation
Although not a problem seen that often, at least here in the UK, you can get almost the same thing happening where the air the dryer gets is too warm.
The air passing over the condenser is too warm and the dryer is unable to get a cold enough surface to condense the moisture in the warm air.
This is effectively what happens when they are shut in an unventilated room, especially a small one.
Again vented dryer cope better with these extremes but are not immune to issues caused by them.
As with the winter, during the summer months garages and other outbuildings can get really warm, far too warm to allow your dryer to work correctly, if at all.
Consider Your Needs
The best thing you can possibly do, before choosing a new dryer, is to consider not just the fancy features and looks of the machine but very much where you will install the dryer as that will often determine which one is best or, in a lot of cases, even possible.”