We're aware that some users are experiencing technical issues which the team are working to resolve. See the Community Noticeboard for more info. Thank you for your patience.
📨 Have you signed up to the Forum's new Email Digest yet? Get a selection of trending threads sent straight to your inbox daily, weekly or monthly!

Heat pump tumble dryer - do they create condensation and how long is a typical program for fully dry

Options
13567

Comments

  • Weave
    Weave Posts: 178 Forumite
    Part of the Furniture 100 Posts Name Dropper Combo Breaker
    edited 21 December 2022 at 3:18PM
    Thanks everyone for your input and info on drying times etc. This has been a really helpful excercise for me to work out what to do next.

    I decided to crunch the numbers for my specific case. The following is sort of for my reference to look back on as I am not expecting to sort this until the January sales start but others may find it a useful example of the savings to be made.

    I have assumed the manufacturers quoted energy usage figures are realistic.

    I currently pay 48.44 per kWh (Dec 2022) (I GOT THIS RATE WRONG, IT SHOULD HAVE BEEN CALCULATED USING 31.44 AFTER ALLOWING FOR PRICE CAP DISCOUNT - SEE CORRECTION ON PAGE 4 OF THREAD :))

    I estimate we do 6 full dryer loads per week or 312 per year

    My existing dryer is a Tricity Bendix TM 320 W Dryer and is only designed for 5kg but we regularly put more in it than that and have always done so. The quoted kWh for 5kg to dry is 3.64 but I estimate this to be more likely 6kWh for larger loads if not more now it is so old and inefficient.
    Cost per load £2.91 estimated
    Cost per week £17.46
    Cost per year £907.92 estimate

    As we have a width restriction for the new device it has to be less than 60cm wide to fit the gap in the units. I am therefore considering narrower dryers only:

    For Heatpump option - Hotpoint NTM1192SK Dryer (9kg) - for around £429 (plus delivery) at the moment - Full load to dry is 2.13 kWh - £1.03 per load
    Cost per week £6.18
    Cost per year £321.36
    Saving over old dryer per year £586.56

    For a vented option - Hotpoint H1D80WUK Dryer (8Kg) - for around £259 (plus delivery) at the moment - Full load to dry is 5.02 kWh - £2.43 per load
    Cost per week £14.58
    Cost per year £758.16
    Saving over old dryer per year £149.76

    I am surprised at how much cheaper the heat pump option is to run and I have seen some that consume even less energy than the above Hotpoint. My mission now is to locate a dryer that is 59.5cm wide and has the lowest energy consumption and the best reviews!
  • Alnat1
    Alnat1 Posts: 3,843 Forumite
    1,000 Posts Third Anniversary Photogenic Name Dropper
    Hope you can find the perfect model, good luck  :D
    Barnsley, South Yorkshire
    Solar PV 5.25kWp SW facing (14 x 375) Lux 3.6kw hybrid inverter installed Mar 22 and 9.6kw Pylontech battery 
    Daikin 8kW ASHP installed Jan 25
    Octopus Cosy/Fixed Outgoing 
  • macman
    macman Posts: 53,129 Forumite
    Part of the Furniture 10,000 Posts Name Dropper
    edited 21 December 2022 at 1:14PM
    I'd look at spending a little more and getting maybe a mid-range Bosch? Hotpoint is a budget brand of Whirlpool, with all that implies.
    Obviously the width restriction is a limiting factor, but there must be options other than Hotpoint?
    12m warranty only, unless you can find a Hotpoint at JL. Bosch: 24m as standard.
    No free lunch, and no free laptop ;)
  • daveyjp
    daveyjp Posts: 13,530 Forumite
    Part of the Furniture 10,000 Posts Name Dropper
    The Hotpoint looks to be energy hungry, is that the maximum figure?

    Our new Bosch condenser only uses 2-3 kw per load based on a 1400 rpm washer spin cycle.

    With the extended drying time of heat pumps how you expect to dry the loads over the  week is an important consideration 

    If you are doing a load a day it will be fine.  If you expect to do 3-4 loads in a day it will be on 6-12 hours.
  • Weave
    Weave Posts: 178 Forumite
    Part of the Furniture 100 Posts Name Dropper Combo Breaker
    macman said:
    I'd look at spending a little more and getting maybe a mid-range Bosch?
    My initial thoughts were that the mid range brands were pricey but that was before I realised how much energy we would save after doing the calculations so I will look at more expensive options now.

    daveyjp said:
    If you are doing a load a day it will be fine.  If you expect to do 3-4 loads in a day it will be on 6-12 hours.
    That is a concern. At the moment I try and smash through the loads in one to two days doing 2 hourly load changes. I may have to adjust my routine to evening and morning loads but we can do that now as I won't have to leave the back door open to vent the condensation anymore.
  • Cirrus1
    Cirrus1 Posts: 61 Forumite
    10 Posts
    On the John Lewis website you can filter by weight. Perhaps the lighter machines are a bit smaller.
    There are days that I do many loads and I don’t pay much attention to how long it is taking. I’m sure I would have noticed if took an excessive amount of time.
  • Mstty
    Mstty Posts: 4,209 Forumite
    1,000 Posts First Anniversary Photogenic Name Dropper
    edited 21 December 2022 at 1:39PM
    Weave said:
    Thanks everyone for your input and info on drying times etc. This has been a really helpful excercise for me to work out what to do next.

    I decided to crunch the numbers for my specific case. The following is sort of for my reference to look back on as I am not expecting to sort this until the January sales start but others may find it a useful example of the savings to be made.

    I have assumed the manufacturers quoted energy usage figures are realistic.

    I currently pay 48.44 per kWh (Dec 2022)

    I estimate we do 6 full dryer loads per week or 312 per year

    My existing dryer is a Tricity Bendix TM 320 W Dryer and is only designed for 5kg but we regularly put more in it than that and have always done so. The quoted kWh for 5kg to dry is 3.64 but I estimate this to be more likely 6kWh for larger loads if not more now it is so old and inefficient.
    Cost per load £2.91 estimated
    Cost per week £17.46
    Cost per year £907.92 estimate

    As we have a width restriction for the new device it has to be less than 60cm wide to fit the gap in the units. I am therefore considering narrower dryers only:

    For Heatpump option - Hotpoint NTM1192SK Dryer (9kg) - for around £429 (plus delivery) at the moment - Full load to dry is 2.13 kWh - £1.03 per load
    Cost per week £6.18
    Cost per year £321.36
    Saving over old dryer per year £586.56

    For a vented option - Hotpoint H1D80WUK Dryer (8Kg) - for around £259 (plus delivery) at the moment - Full load to dry is 5.02 kWh - £2.43 per load
    Cost per week £14.58
    Cost per year £758.16
    Saving over old dryer per year £149.76

    I am surprised at how much cheaper the heat pump option is to run and I have seen some that consume even less energy than the above Hotpoint. My mission now is to locate a dryer that is 59.5cm wide and has the lowest energy consumption and the best reviews!
    48.44p kWh? Is that a day rate for economy 7?or some other reason it is that high?
  • Weave
    Weave Posts: 178 Forumite
    Part of the Furniture 100 Posts Name Dropper Combo Breaker
    Thanks for highlighting this @mstty. My bill shows the rate as 48.44 in a summary box but when I look at the itemised lines it shows:

    Energy Used XXXX kWh @ 48.44p/kWh
    less Energy Price Guarantee XXXX kWh @ 17.00p/kWh

    My actual price capped rate is 31.44 per kWh. Does that sound more reasonable?
  • Mstty
    Mstty Posts: 4,209 Forumite
    1,000 Posts First Anniversary Photogenic Name Dropper
    Weave said:
    Thanks for highlighting this @mstty. My bill shows the rate as 48.44 in a summary box but when I look at the itemised lines it shows:

    Energy Used XXXX kWh @ 48.44p/kWh
    less Energy Price Guarantee XXXX kWh @ 17.00p/kWh

    My actual price capped rate is 31.44 per kWh. Does that sound more reasonable?
    That sounds much better you can double check your regional figure below.

    Might make a difference to your calculations

    https://www.gov.uk/government/publications/energy-price-guarantee-regional-rates/energy-price-guarantee-regional-rates
  • SnakePlissken
    SnakePlissken Posts: 150 Forumite
    100 Posts Name Dropper
    edited 21 December 2022 at 2:47PM
    daveyjp said:
    The Hotpoint looks to be energy hungry, is that the maximum figure?

    Our new Bosch condenser only uses 2-3 kw per load based on a 1400 rpm washer spin cycle.

    With the extended drying time of heat pumps how you expect to dry the loads over the  week is an important consideration 

    If you are doing a load a day it will be fine.  If you expect to do 3-4 loads in a day it will be on 6-12 hours.
    My Bosch heatpump  says 2kw for a  full cotton load in manual. ( thats the longest program)

    In reality i think we are around 1kw to 1.5 kw per full load for cotton. (We do a 1400 spin on washing)
    I think for some loads we are far less eg shirts load where its 45 mins or less to complete.

    Secret to max out low energy use is seperately  dry towels,  shirts, cottons, man made fibres etc on correct program for them. Or if not much of a load use mixed mode which is 1.5 hours, but generally is under that, sometime under 1 hour.
Meet your Ambassadors

🚀 Getting Started

Hi new member!

Our Getting Started Guide will help you get the most out of the Forum

Categories

  • All Categories
  • 350.9K Banking & Borrowing
  • 253.1K Reduce Debt & Boost Income
  • 453.5K Spending & Discounts
  • 243.9K Work, Benefits & Business
  • 598.8K Mortgages, Homes & Bills
  • 176.9K Life & Family
  • 257.2K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 16.1K Discuss & Feedback
  • 37.6K Read-Only Boards

Is this how you want to be seen?

We see you are using a default avatar. It takes only a few seconds to pick a picture.