The first question in any tumble dryer installation is not where the plug goes but where the moisture goes. A vented dryer blows warm, damp air outside through a hose. A condenser dryer turns that moisture into water, collected in a tank or pumped to a drain. A heat pump dryer does the same as a condenser at a lower temperature. Each type needs a different setup, and a dryer fitted in the wrong place for its type will take longer to dry, fill the room with condensation or run hotter than it should.
Voltify Contractors installs freestanding tumble dryers in homes and rented properties across East and South-East London — replacements, first-time installations and dryers stacked on top of a washing machine — as part of our appliance installation service. If you are still deciding between a separate dryer and a combined machine, our washer dryer installation page compares the two.
Tumble Dryer Installation by Type: Vented, Condenser or Heat Pump
| Dryer type | Where the moisture goes | What the installation needs |
|---|---|---|
| Vented | Blown outside as warm, damp air through a flexible vent hose | A route to the outside — a wall vent, a window kit or a door vent — kept as short and straight as possible |
| Condenser | Collected as water in a removable tank, or pumped away through a drain hose | Space around the machine for airflow, and optionally a drain connection so the tank doesn’t need emptying |
| Heat pump | As a condenser, but dried at a lower temperature | The same as a condenser; works best in a room that doesn’t get cold |
The type also decides where the dryer can sensibly go. A vented dryer needs to be near an outside wall or window. A condenser or heat pump dryer can go almost anywhere with power and some airflow, which is why they are the usual choice for flats, internal cupboards and under-stairs spaces.
Vented Dryers: Getting the Hose Route Right
Most problems with vented dryers come from the hose. Every extra metre and every bend slows the airflow, so the dryer takes longer, runs hotter and collects more lint inside the hose and the machine. Manufacturers set a maximum hose length and number of bends in their installation instructions, and a sound installation stays well within them. The hose should also be kept free of kinks and not squashed behind the machine when it is pushed back.
A vented dryer should never be vented into a cavity wall, a loft, the space under a floor, or a cupboard. The damp, lint-laden air causes condensation, mould and a build-up of highly flammable fluff where nobody can see it.
Where there is already a wall vent from a previous dryer, it can usually be reused once it has been checked and cleared. A window kit works for occasional use but relies on the window being open. If no outside route exists, making a new opening through an external wall is a larger job and, in a flat or leasehold property, may need the freeholder’s permission — so the options are talked through before anything is booked. In many flats a condenser or heat pump model avoids the question altogether.
Condenser and Heat Pump Dryers: Tank or Drain?
Condenser and heat pump dryers collect water in a tank, usually at the top or in the base, which needs emptying after most cycles. Many models can instead be connected to a waste with a drain hose, using a standpipe or the spigot on a kitchen sink trap in the same way as a washing machine. A drain connection is especially worth having when the dryer is stacked, because lifting a full tank out of a machine at head height is awkward.
Condenser dryers need air around them to work. Pushed tight into a small cupboard with the door closed, the room heats up and the drying slows down. Heat pump dryers are the most economical to run but are more sensitive to a cold room: in an unheated garage or outbuilding they can take much longer to dry, and some manufacturers set a minimum room temperature. The installation instructions for the model will say what applies.
Stacking a Tumble Dryer on a Washing Machine
Stacking saves floor space but has to be done with the correct stacking kit for that particular washer and dryer — often sold by the dryer manufacturer. The kit locks the dryer in place so it cannot walk off the washing machine during a spin. The dryer always goes on top, never the washing machine, because the washer is heavier and vibrates more. A tumble dryer should not be stacked on top of a washer dryer.
It is worth checking the height before committing. The dryer controls, door and filter need to be comfortable to reach, and the column may not fit under a shelf, a boiler or a cupboard. If a shelf needs moving or a worktop section removing to make room, that can be arranged through our handyman and property maintenance service, and if the washing machine is being fitted at the same time, see our washing machine installation page for what that part of the job involves.
Power and Position
A tumble dryer draws a heavy load for the whole of the drying cycle. It should be plugged straight into its own wall socket, not an extension lead or a multi-way adaptor shared with other appliances. If the nearest socket is in the wrong place or already in use, a new one can be added through our socket and switch installation work.
Positions in bathrooms raise extra electrical questions and are checked before any work is agreed. A freestanding dryer should not be built into a kitchen housing; if you want the dryer hidden behind a kitchen door, it needs to be a model designed for that, and our integrated appliance installation page explains how housings and door panels are handled.
After Installation: Lint and Safe Use
Lint is the main maintenance point with any tumble dryer. The filter should be cleared after every cycle, and on a vented dryer the hose and outside vent flap are worth checking regularly for build-up. On condenser dryers, the condenser unit or heat pump filters need rinsing as often as the manual says. A dryer that starts taking noticeably longer, or feels unusually hot, usually has an airflow problem that should be looked at before it is used much more.
It is also sensible to register a new dryer with its manufacturer, so you are told directly if a safety notice or recall is ever issued for that model.
How the Price Is Worked Out
The documented minimum call-out is £80 for the first hour. A straight swap of a condenser dryer, or a vented dryer reusing a sound existing vent, sits at the simpler end. The cost rises with a new vent route, a drain connection that needs adding, a stacking kit to fit, a new socket, a shelf or worktop to alter, or a dryer going into a completely new position. Parts such as stacking kits, vent kits and drain kits are not included in the call-out minimum. If you would like the old dryer taken away, ask when you book so it can be confirmed.
The quickest way to a clear answer is to send the dryer’s model number, a photo of the space, and a photo of where the vent or waste would go. Contact Voltify Contractors to arrange the installation, or check the areas we cover.
