How to Choose a Heat-Pump Tumble Dryer
Heat-pump dryers cost more upfront but far less to run than condenser or vented models. Here's what actually matters when picking one.
By Editorial · 17 July 2026
If you’re replacing a tumble dryer, the single biggest decision is the drying technology, not the brand. It determines both the sticker price and what you’ll actually pay to run the thing for the next decade.
The three types, in plain terms
Vented dryers blow hot, moist air straight outside through a duct. They’re the cheapest to buy and the fastest to dry a load, but they use the most energy and need an exterior wall or window vent, which rules them out for a lot of flats and internal utility rooms.
Condenser dryers don’t need venting, they collect moisture in a tank or drain it away, and cool it back to water inside the machine. They’re more flexible to install than vented dryers but land in the middle on running cost.
Heat-pump dryers use a refrigerant circuit to recycle heat rather than generating it fresh each cycle, similar in principle to a fridge working in reverse. That’s what gets them onto the top of the EU energy label. They cost more to buy, dry more slowly, but use meaningfully less electricity per load.
What to actually compare
Once you’ve decided on heat-pump, the differences between models come down to a short list of numbers, all of which you’ll find on each model’s tumble dryer spec page:
- Capacity (kg). Match this to your washing machine’s capacity, or slightly below it, drying a full washer load in one dryer cycle is the most efficient way to use either machine.
- Energy per cycle (kWh). This is the number that actually determines your electricity bill, not the marketing “A+++“-style label alone. Two heat-pump dryers with the same energy class can still differ by 20% or more here.
- Condensation class. This measures how well the dryer keeps moisture out of the room, rather than the energy label, which measures electricity use. Look for A-rated condensation if the dryer sits in a bedroom or living space.
- Sensor drying. Worth having on almost any budget, it stops the cycle the moment clothes are dry instead of running a fixed timer, saving both energy and unnecessary wear on fabric.
- Refrigerant type. Newer models increasingly use R290, a lower-global-warming-potential refrigerant than older R134a designs, if that matters to you, it’s usually stated in the spec sheet.
A sensible shortlist process
Filter the tumble dryer category by capacity and dryer type, sort by energy per cycle, and shortlist three or four models within your budget. From there, use the compare tool to put your finalists side by side, every spec, one table, and the running-cost calculator to translate the energy figures into an actual annual cost based on your own electricity tariff.
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Frequently asked questions
Is a heat-pump dryer worth the extra cost? +
For most households doing 4 or more loads a week, yes. A heat-pump dryer typically uses 40 to 50% less energy per cycle than a condenser or vented dryer of the same capacity, so the higher purchase price is usually recovered within two to four years of typical use, and every cycle after that is meaningfully cheaper to run.
Do heat-pump dryers take longer to dry a load? +
Often yes, a standard cotton cycle can run 20 to 40 minutes longer than an equivalent vented dryer, because the heat-pump process runs at a lower, gentler temperature. That lower temperature is also why heat-pump dryers tend to be kinder to fabrics.
Do heat-pump dryers need venting to the outside? +
No. Heat-pump dryers are self-condensing, they collect moisture in a tank or drain it directly, so they can go anywhere with a power socket, including an internal utility room or a flat with no exterior wall access.