Stiebel Eltron Mini Instantaneous Water Heater 4.4kW

By Stiebel Eltron Product code: 63421 Pack size: Each

Product Details

• No standby energy consumption
• Compact design
• Unvented
• Outlet via existing tap
• IP25 rated

Technical Specification
Brand Stiebel Eltron
Manufacturer ID 236451/220814
Voltage 230
Energy Class A
Max Pressure (bar) 10
Pack Size 1
IP Rating IP25
User Guide click here
User Guide click here
User Guide click here
Inlet Connection 15mm
Delivery details

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery – £5.00 or FREE for orders over £25

  • Order before 9pm Monday to Thursday for next business day delivery
  • Order Friday to Sunday before 5pm for Monday delivery
  • Orders placed after Sunday at 5pm will be delivered the following Tuesday
Pre-12pm Delivery – £10.00 to arrive before 12pm on the scheduled days above
Saturday Delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 6pm Friday)
Sunday delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 4pm Saturday)
Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page below.
Items over 30kg can only be delivered from Monday to Friday. If ordered before 6pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.
More about Delivery
Click & Collect details

Collection Details

Our opening times are 7am-8pm Monday-Friday, 7am-6pm Saturday and 9-4pm Sunday. Please check your local store is open on the store locator page, before you visit.

Once you have placed your order online, we’ll have it ready for you at the store you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

Don’t forget your mobile number – Make sure your mobile number is added so that we can text you when your order is ready to collect. Please wait for your text or email before coming to collect your items.

If an item is eligible for Next Business Day Collection in store, the order must be placed by 9pm Monday to Thursday for collection the next day. Orders placed after 9pm on Thursday, and up to 5pm on Sunday, will be available for collection on Monday. For larger items over 30kg, please allow two business days.

Stiebel Eltron Mini Instantaneous Water Heater 4.4kW is rated 3.2 out of 5 by 5.
Rated 1 out of 5 by from Rubbish Don’t buy, just installed it myself, being an electrician and a competent DIY’er, water just barely warm enough to wash hands. Very annoying all that time installing, and it’ll be coming out again and going back, not fit for purpose.
Date published: 2022-03-20
Rated 5 out of 5 by from Easy installation Not the hottest in the world but adequate for hand washing and washing dishes. Easy to install.
Date published: 2021-11-22
Rated 3 out of 5 by from Very good quality but needs mains water pressure Very good build quality and fittings but needs mains water pressure (will not work with loft tank).
Date published: 2021-06-04
Rated 3 out of 5 by from Water Heater stiebel eltron mini Not very hot water for a 4.4 kw heater, ok for small sink washing and washing hands, maybe hotter in the summer time will tell.
Date published: 2021-02-15
Rated 4 out of 5 by from Alright Was ready to send this water heater back as it never really got warm. Then I realised there was a 13A fused spur in the way. Once that was removed and a straight run from the 20A MCB, the water heated up fine. Water never really gets 'hot' with the 4.4kw unit but the warmth is more than adequate for washing hands in a bathroom.
Date published: 2019-02-27
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