Is my heat pump dryer saving me money?

[ericmark]

You're just transferring the water in the clothing to the warm air you have paid to heat...and that water will readily condense on cold surfaces.
It only works whilst the air and building fabric is sufficiently warm and a sufficient air change to transfer the higher humid air outside.
For many this isn't the case and will just lead to damp and mould issues.
Don't get me started on these heated drying racks...

Basic what I was thinking, well put. If one keeps an eye on the relative humidity then it could be used, but one would still need a heat pump at some times of the year, either self-contained in a machine to tumble the clothes, or as a stand-alone unit to dry the air in the whole room.

Much depends on other factors which will make the homes' humidity raise, like people, pets, plants, and gas appliances without flues.

 

[DiyNutJob]

one has the work of arranging the clothes on the line

Since I don't exercise, putting wet clothes on rack is same as getting a free entry to the gym.

 

[ericmark]

I would not get my wife to go outside and hang up clothes, so that's a non-starter. So there are vented tumble driers, and condenser tumble driers.

The vented often you can select speed of drying, my old one either 1 or 2 kW. And at 1 kW it was far cheaper to run.

The condenser drier means no hole in the wall or pipe out of window, and seem to come in three flavours, water cooled, air cooled, and refrigeration cooled.

Water cooled are wasting water, but that's how the washer drier we have works, the air cooled heats up the room it is in, so room size matters, and refrigeration cooled, takes a long time to dry, but as a result clothes do not crease as much.

But in the main condenser driers are fixed time. Where vented you can often vary the time by using fewer elements to heat the clothes.