Thread Number: 88882  /  Tag: Modern Dryers
Fisher & Paykel DH9060FS1 9Kg Heat Pump Tumble Dryer Review: Truly innovative technology
[Down to Last]

Cool Washer Stuff on Amazon:
scroll >>> for more items
Post# 1134513   11/25/2021 at 10:09 (184 days old) by richardc1983 (Leeds, UK)        

richardc1983's profile picture
Hello, it's been a long time since I did a post on here. Here's my review of the Fisher & Paykel DH9060FS1 9Kg Heat Pump Tumble Dryer: A truly remarkable dryer and should be the standard for all manufacturers.

ao.com/product/dh9060fs1-fisher-...

I am going to focus my review on the important points that stand out with this dryer for me, and I feel it appropriate to mention the issues that led me to get the F&P DH9060FS1. Having come from a Bosch Heat Pump dryer which was top of the range and had the auto rinse condenser and self-cleaning filter still had to empty a container in the bottom which was sopping wet with fluff like a giant cat furball which dropped water all over the floor as you had to drain it before binning it. The Bosch was quite frankly the worst appliance I have ever owned, it balled up constantly not just bedding but loads with say PJ bottoms or trousers, it had started to tear sheets and pull buttons off things due to their being no reverse function. The manufacturer says they donít reverse due to energy efficiency. It took you 6 hours to do a bedding load as had to keep opening the door letting out the heat that took ages to build up then start again using timed dry as the sensors would then think the load was dry, it would then ball up over and over again. You had to dry items separately as even a single sheet or duvet would roll up into a big ball. Enough was enough. I have gone for F&P machine as I thought to give a different brand a try.

Firstly, I had to justify the price, but it was the only dryer like it with all the features I wanted. I was insistent on one feature I needed it to have, a reverse function and ideally it having an Inverter Compressor (more on this in my review). This F&P machine has both.

Many of the dryers on the market that have a reverse feature reverse for say 20 seconds or so before going the other way again, this is due to a very basic design issue. The other machines on the market have one motor that drives both the drum and the fan that circulates the air at the same time. The fan will only allow be able to circulate air in one direction and not the reverse direction, this means you only get short reverses and during these reverses the fan does not move any air but is still rotating so air circulation stops momentarily. Cue the DH9060FS1 from F&P, this dryer is the first of its kind I believe to feature 2 separate motors. One brushless motor that drives the drum in either direction EQUALLY and a separate brushless motor to drive the fan continuously and at variable speed (for the night-time Quiet mode to reduce noise or when using the Speed mode, it boosts the fan speed). This design allows the dryer to rotate in equal direction without impacting on airflows. On the majority of cycles, it reverses the drum direction every 5 minutes and performs the new direction for another 5 minutes before reversing the other way. This is the first of its kind out there and is truly innovative that it is available on this domestic dryer. In my opinion, this is the only way to stop tangling, just like your washing machine rotates both ways. Some other manufacturers that donít reverse claim to reduce it by having a protruding piece of plastic on the back of the drum (like a nipple) or ďspeciallyĒ designed paddles to help. In my experience, they do not work. Having a separate fan and drum motor also means that there is less noise when using the drying rack as only the fan runs. The drum does not rotate so you have just warm air being blown over the flat rack so you will only hear airflow and the compressor.

The next feature which I think is awesome is the Inverter Compressor but let me explain what I am comparing to. The majority of your leading heat pump dryers from the lower end to the top end in cost have a fixed speed compressor, this means the compressor is either turned on or turned off. Itís true that heat pumps by their very nature do not get as hot as the electrical heating element dryers so are gentle on laundry however, they still can approach 50c by the end of the cycle. These fixed speed compressors cannot vary their output, they are literally providing 100% output (ON) or 0% output (OFF). This means you do not get variable temperature cycle options for delicate or wool items. The issue with fixed speed compressors is if you turn them off to try to control the temperature, the cold part of the system that removes the moisture from the airflow (and thus the clothes) would then stop dehumidifying the air, so manufacturers keep the compressor running throughout the cycle. The manufacturer of my previous dryer had a ďlow heatĒ option in the menu, however, all it did was bring a cooling fan on in an attempt to circulate ambient room air around the outside of the drum in the cabinet in the hope of trying to keep the temperature down, it didnít work and depending on the load at the end clothes would be quite hot.

This F&P machine however has solved the above by fitting an Inverter Compressor, an Inverter allows the compressor (which generates the heat) to vary its speed and thus heat output. This means, if the compressor is running at 100% output, then full heat capacity is being generated (the same as a fixed speed model) but the compressor being inverter-driven can also slow down, so it can slow down to say 50%, which in turn lowers the temperature of the air inside, particularly useful for delicate/wool items or anything else that requires a lower temperature to dry. The compressor also is able to go above 100% for short periods to get the temperature up as quick as possible (Speed Mode) before reverting back to 100% output. The beauty of this control method is that when the compressor slows down it is still running, dehumidifying the air but it means the temperature of the laundry and airflow can be controlled very accurately. During say the Eco mode, the dryer will take longer to dry, as it runs the compressor at 80% output which means a slightly lower drying temperature which saves energy over the cycle. On quiet mode, it slows it down even further along with the circulation fan for times when the rest of the house might be sleeping etc. This F&P machine has pre-set temperature cycles that range from Ultra Low, Low, Medium, Medium High, High, Ultra High. Each of these cycles relies on the compressor speeding up or slowing down once the temperature is achieved. Throughout the cycle it is normal to hear the compressor speeding up and down and being an Inverter, it is quieter than the standard fixed speed.

The machine is very accurate at drying, I find the best setting for me is with the Dry & Extra Dry lights illuminated. The next step up would be Extra Dry. Having just dry selected can result in some things being ever so slightly damp if you donít remove them straight away after the cycle. The idea of ďDryĒ is that you remove the items after the laundry and any residual moisture (whilst they will feel dry when warm) would evaporate and this helps with creases to fall out. However, as the machine reverses in both directions and has really high airflow they are not very creased anyway. The dryness setting does take getting used to as it is pressing a button to light up the Damp/Dry/Extra Dry indicators. The interior light can be switched on mid-cycle by pressing any button and it stays on for 1 minute. The only thing I wish was different was a clear door but the light enables you to see inside easily enough.

O.K. so thatís the positives, onto the negatives because there are a few annoyances on a machine in this price range. The machine has a steam function. There is no steam generator inside the machine though, the machine instead is connected to the water supply, and it uses a very fine micronozzle to spray an ultrafine mist onto the items you are steaming. It is then reliant on the heat evaporating this spray mist to freshen items or to pre iron shirts. There are two hoses supplied to connect to your water supply, they are both about 50cm long and not long enough unless your water is directly behind the dryer. Secondly, the supplied Y piece adapter to split your washing machine water supply pipe so that the dryer can be connected does not fit. I had to buy a U.K adapter from Screwfix which only cost me about £1.50, still a machine-produced for the U.K market this is not very good, and the manufacturer should have provided 1 long water feed hose rather than 2 short ones as you can only use 1. I have chosen to fit the drain pipe connection, so I donít have to empty the drawer, this was able to reach the drain standpipe which is fitted next to the washer which is at the side of the dryer. Another thing that some may not realise, the dryer door is not reversible, meaning if your washer is next to your dryer, you will not be able to reverse the door to make loading your dryer straight after your washer has finished easier. I have chosen

The minor things now and I am comparing to my previous Bosch dryer, there are a lot more things made of plastic, for example, the door hinge is made of chrome coloured plastic and the inner part of the door (that faces the laundry inside) is made of plastic also whereas on my other appliance they were metal and glass. Longevity wise I'm not sure how they will hold up as the plastic inner of the door may scratch over time. That aside the dryer is built well, there are no rattles, the door closes firmly and there is weight to the machine.
One final point, there is no Wi-Fi Ė the Australian/New Zealand Model comes with built-in Wi-Fi as standard and is advertised in this way. The U.K model despite being exactly the same model does not have Wi-Fi available. The U.K website states that the machine has regular software updates, although without Wi-Fi or Bluetooth this will not be possible. A machine of this value really should have Wi-Fi and if regular software updates are advertised then how does the manufacture propose getting these onto customers machines if there is no connectivity. Personally, I am not bothered about controlling the dryer via an app however to be able to update software and download new programmes is attractive and the Australian model facilitates this via Wi-Fi although from reading reviews it is a feature that is not working too well currently.

Do I think you should buy this dryer? Absolutely, itís costly but it WORKS, it doesnít ball up, it has lots of different heat settings, easy to use menus and VERY energy efficient.



CLICK HERE TO GO TO richardc1983's LINK


  Photos...       <              >      Photo 1 of 2         View Full Size
Post# 1134527 , Reply# 1   11/25/2021 at 12:49 (184 days old) by henene4 (Emden (Germany))        

This certainly isn't the first heat pump dryer with seperate drum and blower motors, but currently probably the only one on the market.

The pre Protex ELux heat pump dryers had a seperate drum and blower motors.
So had all pre T1 Miele ones.



Would love F&P to make it to the German market.

Haiers offerings are great technology wise but somewhat lacking option wise.

F&P appear to have solved these issues for me.


Post# 1134530 , Reply# 2   11/25/2021 at 13:17 (184 days old) by richardc1983 (Leeds, UK)        

richardc1983's profile picture
Itís the only one that I am aware of in the U.K? I also saw Bosch did a Inverter driven compressor version in Turkey but the same model in the U.K wasnít.

Do you have any links?

yes F&P has lots of options.


Post# 1134534 , Reply# 3   11/25/2021 at 13:55 (184 days old) by henene4 (Emden (Germany))        

The models I'm talking about have long been discontinued.
And it isn't any specific model - all of them were.

Miele called it TwinPower.
ELux had no name for it, but this service manual shows it - all models followed that setup:
www.manualslib.com/manual...


Post# 1134535 , Reply# 4   11/25/2021 at 14:02 (184 days old) by henene4 (Emden (Germany))        
Inverter heat pumps in dryers

Other dryers using inverter heat pumps currently are the TOL Miele ones, LG throughout their range and some TOL BSH ones I think.
VZug has them aswell.

In the past many manufacturers used them.
AEG had them on their A+++ ProTex models until the switch to the Series declerations.
Gorenje and in relation Panasonic had them.




However the only other dryer that MIGHT have had seperate drum and blower motors AND an inverter heat pump might have been the only A+++ Miele dryer before the T1 launch.

That model was ridiculously expensive and took pretty long.
It wasn't on the market for long before the T1 redesign and was more of a gap filler solution.

I can't for the life for me find the model number, so if anybody has a lead please let me know.
BSH certainly had them.


Post# 1134536 , Reply# 5   11/25/2021 at 14:07 (184 days old) by Logixx (Germany)        
Great review!

logixx's profile picture
Like Henrik, I'd like to see more from F&P on the German market. Their DishDrawers are available, but pretty expensive.

It's so interesting how people have different experiences with the same machine. My Series 8 has yet to tangle my bed linens - thin or thick, large or small load. Totally agree with you about the Low Temp option: it makes no difference. With or without it, I've measured temps of slightly above 70C in the lint filter when the dryer has reached Extra Dry.

As for dual-motor dryers: I remember the first dryer my mother got in the mid-80s. It was probably made by Zanussi and also had two motors, although it didn't use them in any special way.

Again, great review. :)


Post# 1134538 , Reply# 6   11/25/2021 at 14:42 (184 days old) by henene4 (Emden (Germany))        
Found it!

It was the Miele T8877 WP.
It had both TwinPower and from the usage data it had to have an inverter compressor.


Many dryer's had 2 motors.
Though some used them one way, some another.
Many condenser dryers had seperate fan motors due to condenser cooling requirements.

The reason many early heat pump dryers either didn't reverse or had seperate fan and drum drives was simply the need for a consistent high power air flow no matter what.
A heat pump dryer can only dry when the heat pump is on. To keep the heat pump running without issue it needs the warm air to pass over the cold side - otherwise it can freeze over in seconds. And earlier heat pumps could only be started with a certain wait period after each stop.
That ment it just had to keep running.
A condenser could just switch off the heater and back on at will.

Now even non inverter heat pumps are so low wattage and constructed in a way that allows for short pauses in airflow .
Some heat pumps - for example on many Beko models - are designed so they only need a few seconds to reset after the machine has been paused.

Though even on good reversing dryers you might find that Eco cycles where applicable will not reverse at all.
Speed cycles will also usually reverse less or not at all.



I found with my current Miele that the low temp option cycles the cooling fan on more often and earlier.

Many heat pump systems have a tiny heat exchanger outside the process air flow.
That is usually placed right behind the cooling fan.
The idea is that as long as the cooling fan is off, that heat exchanger can't reject any heat. It of course can reject a tiny amount just by natural convection and conduction, but overall not a significant amount.
Once the cooling fan turns on it can remove heat from the system though.
This allows for some rudimentary heat removal.

I do think though that manufactures actually want laundry to get "hot".
Many early heat pump dryers got negative feedback as consumers said laundry felt cold and never quite dry even on the highest settings.
Often that was the fault of the appliance, but not all that rarely the machines performed as intended.
Cooler laundry feels damper as we associate cold with damp there.
If a heat pump dryer dried to just about dry and then shut off, any residual moisture would settle back into the cool laundry.

On those modern dryers that list residual moisture targets, you'll often see that normal dry is at 0% and cupboard dry is at -1%.
That means the dryer overshoots the drying target. In turn that makes the laundry warmer an suggests to the consumer that laundry is dry though it is actually a touch overdried.

I do tend to set the drying targets up a notch aswell, though Extra Dry on my Miele is to dry for my liking.

I never actually monitored temps with a thermometer, but I might have to.




Finally I do want to say that a variable speed fan, drum and compressor are kind of the utmost and pretty much next step in clothing care.
And this is the first to have all that.

The drum movement is very important for reversing and can be great for different fabrics. Lighter items need less speed for the same tumbling.

A variable speed fan can be useful for large loads to really force air through something.
It can also help with the problem if socks getting stuck to the lint filter grate. I would not be surprised if F&P added some kind of routine where if it detects low air flow it turns the fan off for a couple of seconds and then back on.

A variable speed compressor not only allows for temp control but also allows for very efficient yet thorough drying.
Jeans are notoriously hard to completely dry without over drying in a heat pump dryer.
Either the thick areas stay damp or you have to dry them for ages.
My Miele just does a very long post dry stage with the cooling fan on - not very efficient.
Inverter systems can just turn down the power and keep drying.
Same with hygiene drying cycles: Without an Inverter, the compressor has to run at full blast all the time. With it, the long temp holding stage can be done way more efficiently.


Post# 1134546 , Reply# 7   11/25/2021 at 16:11 (184 days old) by richardc1983 (Leeds, UK)        

richardc1983's profile picture
Interesting, when I spoke to Miele when I had the engineer out to look at my washer he said all the heat pump dryers they sold in the UK market currently are fixed speed compressors but do reverse for a period.

Similar to the Bosch in the Turkey market that had an inverter compressor.

I've seen reviews for the series 7 (mine was series 8) and yes less people have problems with tangling. I wonder I'd drum design or paddle design is different. The high temperatures of 70c is not good and results in uneven drying. The f&p is constantly monitoring the humidity and temperature and adjusting the compressor speed to suite.


This was my Bosch model below. Stupid idea of having no door filter to clean just once every few weeks removing the cat furr from the dripping bottom drawer.
www.bosch-home.co.uk/prod...


Post# 1134551 , Reply# 8   11/25/2021 at 17:52 (183 days old) by brisnat81 (Brisbane Australia)        

I've got a T8627WP and when I've had it apart to clean, I dont remember it having separate motors for the fan and drive, it was basically a Miele Condenser dryer, but with and evaporator and a condenser where the air/air heat exchanger would be and a compressor with a small condenser and fan mounted on the right. From memory the door surround and fan cover was identical to the condenser dryers. Either my memory is wrong or the 8877 was different.

It dries in about the same time as my T1 heat pump and seemingly behaves just like the condenser driers of that generation, I havent found anything objectional about it, other than a bit more effort is involved to clean the secondary filters.

Update
I was wrong, I found a photo with the side panel off, the motor is just for the drum, there must be a pancake fan on the back.


  View Full Size
Post# 1134584 , Reply# 9   11/26/2021 at 03:47 (183 days old) by Logixx (Germany)        
Drum design

logixx's profile picture
Unless Bosch have adjusted the drum speed, there is no difference between the drum if my current dryer and the old air condenser dryer in my profile pic.

I wouldn't say the high temp is causing uneven drying - at least least no in my case. To be clear, the fairly rapid increase in temp occurs only once Cupboard Dry has been reached/surpassed; the dryer otherwise seems to stay below 55C. I feel like my old condenser dryer would decrease the humidity more uniformly as it dried, resulting in a more even result. The heat pump sucks the humidity out of the air, resulting in a sometimes less even result. Just my two Cents.

With both dryers, I add(ed) an extra cool-down after the cycle, which I feel helps to remove some residual moisture.


Post# 1134585 , Reply# 10   11/26/2021 at 05:53 (183 days old) by richardc1983 (Leeds, UK)        

richardc1983's profile picture
@Logixx I have had a couple of the series 8 heat pump dryers from Bosch.

The most recent one was the WTX88EH9GB www.bosch-home.co.uk/prod... and featured a brushless motor. This I would say was deffo worse than the model before which was the WTY86790GB www.bosch-home.co.uk/prod... that had a normal brushed motor so I think the drum speed was altered slightly.

The issue with the high-temperature heating is down to how the sensors detect the humidity. The hotter the air got the dryer seemed to think that it was complete, meaning things with pockets would not be dry inside or still damp. Maybe a sensor calibration thing but I deffo noticed that hitting 70c was ridiculous and will be the reason some t-shirts shrunk because it got so hot.

Cupboard dry was never enough for me, everything came out damp, even with the plus settings selected. I had to use extra dry every time but things got so hot.

What the F&P machine does is as it notices the humidity and clothes are starting to dry well it lowers the output of the compressor to give a more uniform output so that things then gently dry. I even like the short cool down at the end.

If I ever used a cool down on the bosch it would just suck the humidity that had built up on the evaporator coil and put it back into the load.


Post# 1134614 , Reply# 11   11/26/2021 at 13:50 (183 days old) by Logixx (Germany)        

logixx's profile picture
Ha, mine is one of those brushless models. 😄

I did check the replacement parts website and the new models with the reversing feature from BSH have different fans - no pic online but the fan's price went up from 7 to 40 Euros. I'd guess that reversing for 5 minutes in each direction throughout the cycle is pretty much unique these days.

My old condenser would switch to low heat when it reached Iron Dry. This current one also has the cooling fan come on intermittently when it hits Iron Dry but it just does next to nothing, this the temp rises as the moisture sensor still detects dampness. Inverter heat pumps should really be the norm in a certain price category.


Post# 1134625 , Reply# 12   11/26/2021 at 16:20 (183 days old) by henene4 (Emden (Germany))        

I think they will become more prevalent in the future.

Main issue is that a heat pump is still far more demanding power wise than a motor.
A compressor needs pretty high start up torque which while easy to provide with an inverter still is a very high load that can easily over load low quality components.

A motor can overcome that problem with a soft start procedure, but a compressor just can't.


Post# 1134695 , Reply# 13   11/27/2021 at 07:16 (182 days old) by richardc1983 (Leeds, UK)        

richardc1983's profile picture
BSH told me none of their models reverse due to efficiency and they checked with Germany and they said the same?

How do you know which models reverse?


Post# 1134697 , Reply# 14   11/27/2021 at 07:31 (182 days old) by henene4 (Emden (Germany))        

They launched them for this year's IFA.

The models of the new Series 6/ IQ 500 have a dedicated beddings cycle.
According to their press release, that reverses.


Post# 1134719 , Reply# 15   11/27/2021 at 13:08 (182 days old) by richardc1983 (Leeds, UK)        

richardc1983's profile picture
Any chance you've got a link?

I did find it strange that it had a brushless motor but didn't reverse.


Post# 1134720 , Reply# 16   11/27/2021 at 13:17 (182 days old) by richardc1983 (Leeds, UK)        

richardc1983's profile picture
Just checked the bsh uk website the series 6 model says it does not reverse and no bedding cycle.

I think the different market regions have different features.

www.bosch-home.co.uk/prod...


Post# 1134721 , Reply# 17   11/27/2021 at 13:40 (182 days old) by henene4 (Emden (Germany))        

What you linked is an old style series 6 model.
The new ones aren't listed in the UK yet.

This is a German model:
www.bosch-home.com/de/pro...

This is the presentation mentioning it, at about 2:45:






Post# 1134822 , Reply# 18   11/28/2021 at 21:47 (180 days old) by mielerod69 (Australia)        
Miele TwinPower

mielerod69's profile picture
I have an older Miele T8929WP heat pump dryer and wouldn't change it for anything. It has two motors, one to drive the drum and one to drive the fan. I'm all for efficiency but not to the detriment of performance. My dryer can dry a load of towels in just shy of 90 minutes. What I also like is the Cottons hygiene program which drys to Normal and then does a 'hygiene' phase by raising the temp for a while. I find this works really well for very thick towels and better than the Cottons Extra dry setting. I had a T1 heat pump for a while but it took too long to dry and the sheets would ball up. Gave it to my mum. Lucky I didn't give my T8929WP away when I got it.

Post# 1134831 , Reply# 19   11/29/2021 at 06:05 (180 days old) by henene4 (Emden (Germany))        
T1 taking to long

Can't support that claim.
Longest dry times I have on mine is my jeans load or really large T-Shirt loads and those take 2h at most - but we're talking full 8kg load there.

But I wouldn't have bought it if it hadn't had the bedding cycle.


Post# 1134840 , Reply# 20   11/29/2021 at 10:23 (180 days old) by 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.

Itís 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 ďupgradeĒ 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 didnít shrink anything. With the TCR Iíve 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 thatís a story for another day :-).

Jon




This post was last edited 11/29/2021 at 12:44
Post# 1134846 , Reply# 21   11/29/2021 at 11:11 (180 days old) by henene4 (Emden (Germany))        

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.


Post# 1134849 , Reply# 22   11/29/2021 at 12:52 (180 days old) by 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 65į. 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.


Post# 1134864 , Reply# 23   11/29/2021 at 20:57 by mielerod69 (Australia)        
Drying times and temperatures

mielerod69's profile picture
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.


Post# 1134868 , Reply# 24   11/30/2021 at 08:09 by henene4 (Emden (Germany))        

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.


Post# 1134877 , Reply# 25   11/30/2021 at 11:56 by 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. Iím not saying itís 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 itís 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



Forum Index:       Other Forums:                      



Comes to the Rescue!

The Discuss-o-Mat has stopped, buzzer is sounding!!!
If you would like to reply to this thread please log-in...

Discuss-O-MAT Log-In



New Members
Click Here To Sign Up.



                     


automaticwasher.org home
Discuss-o-Mat Forums
Vintage Brochures, Service and Owners Manuals
Fun Vintage Washer Ephemera
See It Wash!
Video Downloads
Audio Downloads
Picture of the Day
Patent of the Day
Photos of our Collections
The Old Aberdeen Farm
Vintage Service Manuals
Vintage washer/dryer/dishwasher to sell?
Technical/service questions?
Looking for Parts?
Website related questions?
Digital Millennium Copyright Act Policy
Our Privacy Policy