Vaillant ecoFIT Pure 835 Gas Combi Boiler (973KK)

£ 1279.99INC VAT

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Vaillant ecoFIT Pure 835 Gas Combi Boiler (973KK)

All Boilers and Boiler Accessories must be installed by a Qualified Gas Safe Registered professional. Order by 12pm to receive your order next working day. Orders placed after 12pm will be delivered within 2 working days. We are unable to ship to Northern Ireland and offshore addresses. We cannot accept the return of unwanted boilers if the box/packaging has been opened (your statutory rights are not affected).

Ultra-quiet operation, small footprint and total flexibility of siting (with top and rear flue options). The automatic purging assistance and high specification aluminium heat exchanger, makes for a lightweight installation. High quality and high efficiency, together with the complete availability of spare parts, mean the ecoFIT Pure is easy to maintain. Built-in, 2-stage frost protection ensuring optimal performance all-year round.

  • Max. Domestic Hot Water Output: 35kW
  • Max. Central Heating Output: 35.8kW
  • Aluminium Heat Exchanger
  • Top or Rear Flue Outlet
  • Compatible with Solar Panels
  • 2 Year Manufacturer’s Guarantee (Registration Required, T&Cs Apply)
  • 118,737BTU
  • Digital Display

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View all: Vaillant Boilers

£1279.99INC VAT

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Vaillant ecoFIT Pure 835 Gas Combi Boiler is rated 3.0 out of 5 by 2.
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Rated 5 out of 5 by from Powerful little boiler. I've installed a couple of this model. Note: it's only 35KW on HW mode and around 25/26KW on heating mode. However, 25kw is adequate for most modern houses with TRV's and will keep the boiler in condensing mode longer. The heating output can also be range rated lower if need be in the parameters. The only issue I've ever had with these Ecofits it the clicking noise on some which can be fixed by greasing four nuts/bolts. If your own boiler is under warranty, the Vaillant Engineer will remedy this noise issue in around 10 minutes if your installer can't do it. A bit pricey at the moment on Screwfix so I marked it down on value for money.
Date published: 2021-03-21
Rated 1 out of 5 by from Loud clicking defect - avoid I had a Valliant Ecofit Pure 835 installed end of November 2020. Since install it has made a progressively louder and more frequent clicking sound whenever in operation. Looking online I see numerous comments and videos going back 11 years with precisely the same issue. It appears related to the over tightening of a component inside the unit during manufacturing that is supposed to have more movement for expansion due to heat. The fact that in 2021 I am seeing an issue reported for the last decade make me seriously question the quality of Valliant's products. I hope to get this resolved but I cannot recommend Valliant products given that my boiler makes super loud clicking sounds whenever in operation. The dBA levels advertised for this product are completely inaccurate. It's the noisiest boiler I have ever owned.
Date published: 2021-03-12
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  • REVIEWS, PRODUCT
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Specification
Boiler Depth 280 mm
Boiler Height 700 mm
Boiler Type Combi
Boiler Width 390 mm
Brand Vaillant
BTU 118,737 BTU
CALC - Fuel Type Gas
Colour White
Compatible with Solar Panels Compatible with Solar Panels
Display Type Digital Display
Energy Rating (Heating) A
Energy Rating (Water) A
Filling Loop Supplied Filling Loop Not Supplied
Fitting Requirements Must be Fitted by a Gas Safe Registered Installer
Fixing Jig Supplied Fixing Jig Supplied
Flow Rate (Ltr/Min) 12 Ltr/min
Flue Connection Diameter 60 / 100 mm
Flue Outlet Position Top or Rear Flue Outlet
Flue Supplied Flue Not Supplied
Frost Protection Frost Protection
Fuel Type Gas
LPG Conversion Kit Supplied Not LPG Compatible
Manufacturer Guarantee 2 Year Manufacturer’s Guarantee (Registration Required, T&Cs Apply)
Max. Heat Output CH (Pn) 35.8 kW
Max. Heat Output DHW (Pn) 35 kW
Model Name/No ecoFIT Pure 835
Pack Size 1
Parent Colour White
Pieces in Pack/Case 1
Product Returns Note We cannot accept the return of unwanted boilers if the box/packaging has been opened (your statutory rights are not affected).
Product Type Boiler
Range Name ecoFIT Pure
SAP Seasonal Efficiency 89.7 %
Sound Pressure Level 52 dBA
Suitable for Underfloor Heating Suitable for Underfloor Heating
Temperature Range (Heating) 10 - 80 °C
Temperature Range (Water) 35 - 60 °C
Total Product Weight 35 kg

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