Fisher & Paykel DH9060FS1 9Kg Heat Pump Tumble Dryer Review: Truly innovative technology

[lavamat_jon]

Congratulations on the F&P dryer - looks fab and seems to tick a lot of boxes. A friend of mine has just got the matching washer and is very impressed, I think they look very smart and also great that the washers offer hot fill facility which makes sense nowadays with combi boilers and solar hot water.

It’s a shame about the BSH dryers and their lack of reversing - hopefully the newer models will alleviate these issues. It baffles me as to how for so long they have been able to make high end dryers without a simple feature found even in the most basic Indesit/Beko dryers.

@mielerod69 - I wholeheartedly agree! Worst thing I ever did was give away my T8860WP Edition 111 to “upgrade” to a TCR860. I have no issues with overall evenness and drying results, but the T8860WP dried most loads within the hour, reversed evenly every minute and also didn’t shrink anything. With the TCR I’ve had to revert to airing most things in a clothes horse for fear of shrinkage - in fact my White Knight and Miele T284 vented dryers on half heat are much gentler. Not to mention reliability issues but that’s a story for another day .

Jon[this post was last edited: 11/29/2021-12:44]

 

[henene4]

Again, the T1s are far from perfect dryers.
But shrinkage really isn't one. They don't get any hotter than any other heat pump dryer. I dry almost everything and nothing has shrunken yet.

 

[lavamat_jon]

Henene,

Posting from my own extensive experience from owning both machines. The T1 gets hotter than the T8860WP ever did and unfortunately does shrink clothes - even with Gentle Tumble enabled it will reach over 65°. Laundry is hot to the touch when finished, whereas with the Edition 111 there was barely any heat in the load at all.

Your mileage may well vary.

 

[mielerod69]

Drying times and temperatures

I have looked at the past and present Miele heat pump dryers and have found that the new ones indeed take longer to dry than their predecessors:
T8929WP - 7 kg - 1600 rpm - 94 min - 1.65kWh - 13.4 min/kg
T8861WP - 8 kg - 1600 rpm - 113 min - 1.65kWh - 14.1 min/kg
T8877WP - 7 kg - 1600 rpm - 145 min - 1.00kWh - 20.7 min/kg
TEH785WP - 9 kg - 1600 rpm - 141 min - 1.15kWh - 15.7 min/kg
TCR860WP - 9 kg - 1600 rpm - 160 min - 1.25kWh - 17.8 min/kg

The T8000 series used R134a refrigerant, while the TCR860 used R450a and the TEH785 used R290. The use of R290 refrigerant seems to have brought the drying times down as well as it used less electricity.

Going by temperature, it seems that the T8929WP got hotter faster due to the quick drying times.

 

[henene4]

I don't think over 65C is correct.

The default cool down temp is 55C on the T1s and without cool down extension enabled, my dryer barely ever goes into cool down.

Further, most heat pumps struggle to reach temps beyond 65C anyways.
And even with that 65C air temp really isn't enough to shrink clothing much at all.
65C is usually considered low temp.

And further along that line, the TwinPower dryers were known to be the only heat pump dryers that actually got hot.
The fact that the entire hygiene cycle on the T8861 is barely 40min longer than the temperature maintaining stage on the T1 HygieneDry is should show that pretty clearly.

But I'll get a temp probe and check myself.

 

[lavamat_jon]

I have measured with two different temperature probes and that is indeed the reading you get especially towards the end of the cycle, and even more so if you have dried loads in quick succession. Regards to shrinkage in the dryer, I think we shall agree to disagree but I can only post based on my own findings and experiences (alongside some shrunken t shirts!).

Not a very scientific approach, but as mentioned before laundry is noticeably hotter to the touch when unloaded out of the T1 compared to the Edition 111. Clothes out of the edition 111 were similar to out of an AEG heat pump - lukewarm to the touch. You mention comfort cooling - the T1 will run for quite a while on cooling before it switches to anti crease whereas the edition 111 would only spend 1 min on the cooling phase and rarely went into comfort cooking. I’m not saying it’s necessarily a bad thing as it shows that the heat pump works well and pumps a lot of heat into the load, but it does unfortunately have the side effect of shrinking laundry.

To me it’s certainly not logical to dry laundry at high temperatures when they are washed at 30/40 to care for the fabrics in the first place. Which brings me back to the original point of the thread where it interests me in how the F&P seems control temperatures to better care for laundry, rather than trying to get as hot as it can like a lot of heat pumps tend to do.

Of course there are also the environmental benefits of air drying laundry compared to drying even in a heat pump but that is an entirely different debate .

Jon