Tumble dryers come with an energy efficiency rating just like other appliances. Based on their energy consumption and drying performance they are awarded a grade between A and G – A being the best, most efficient rating. Trading Standards monitor manufacturers who conduct tests themselves to gauge efficiency.
It’s common knowledge that a tumble dryer is more costly to run, but with a heat pump condenser you might be able to bring the costs down. Similarly, try to manage your loads and only use the tumble dryer when you really need it, such as in winter when it’s hard to hang washing out to dry.
You can also get savvy with your settings to lower your energy bills. For example, if you live in an area with cheaper tariffs at night you could delay your dryer to come on and take advantage of this.