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  • Vaillant ecoTEC Exclusive 838 Condensing Gas Combination Boiler
  • Vaillant ecoTEC Exclusive 838 Condensing Gas Combination Boiler
  • Vaillant ecoTEC Exclusive 838 Condensing Gas Combination Boiler
  • Vaillant ecoTEC Exclusive 838 Condensing Gas Combination Boiler

Vaillant ecoTEC Exclusive 838 Condensing Gas Combination Boiler
Reference: PETECEXC838

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The Vaillant ecoTEC Exclusive 838 Gas Combination Boiler has been designed to meet increased demands for a condensing combination boiler that can also provide space heating and domestic hot water for large domestic properties. In addition to being Sedbuk Band A Rated, the Vaillant ecoTEC Exclusive 838 Gas Combination Boiler has a wider modulation range than many competitors, meaning higher efficiencies at lower outputs due to staying in condensing mode for longer. This stylish and attractive Vaillant Boiler is suitable for sealed heating systems.

Please Note - This model can be converted to LPG by using an LPG Conversion Kit. We recommend calling Vaillant for the appropriate instructions required

Vaillant ecoTEC Exclusive 838 Features and Benefits:

  • Higher outputs that will suit larger hot water and heating applications
  • Low energy circulation pump fitted
  • Compatible with Vaillant range of high-efficiency flues
  • Can be used with the VRT 360 Programmable Room Thermostat
  • ecoLEVEL Condensate Pump compatible
  • Stainless Steel Heat Exchanger
  • Back-Lit Plain Text Display
  • Re-designed Filling Loop included for quick installation

Vaillant ecoTEC Exclusive 838 Technical Specs:


Height (mm)800
Width (mm)480
Depth (mm)450
Max Domestic Hot Water Output (kW)37.2
Max Domestic Hot Water Output (btu)127,000
Central Heating Output (kW)11.2 - 30.0
Central Heating Output (btu)38,200 - 102,400
Flow Rate (l/min)15.2
Weight (Kg)46
SEDBUK Band A
100mm Diameter Flue Accessories
  • Vaillant Eco Standard Horiz Flue Duct

    Vaillant Eco Standard Horiz Flue Duct(PECOSTD)

    £109.28 (£91.07 exc. VAT)
  • Vaillant Eco Horiz Flue Kit Telescopic

    Vaillant Eco Horiz Flue Kit Telescopic(PVA303936)

    £130.43 (£108.69 exc. VAT)
  • Vaillant Vertical Flue Terminal 60/100

    Vaillant Vertical Flue Terminal 60/100(PVA20065937)

    £142.18 (£118.48 exc. VAT)
  • Vaillant Ecomax Ii 90 Degree Elbow

    Vaillant Ecomax Ii 90 Degree Elbow(PVA303910)

    £46.70 (£38.92 exc. VAT)
  • Vaillant Ecomax Ii 45 Degree Bends (Pair)

    Vaillant Ecomax Ii 45 Degree Bends (Pair)(PVA303911)

    £77.16 (£64.30 exc. VAT)
  • Vaillant Ecomax Ii 470mm Flue Extension Kit

    Vaillant Ecomax Ii 470mm Flue Extension Kit(PVA303902)

    £38.58 (£32.15 exc. VAT)
  • Vaillant Ecomax Ii 970mm Flue Extension Kit

    Vaillant Ecomax Ii 970mm Flue Extension Kit(PVA303903)

    £59.93 (£49.94 exc. VAT)
  • Vaillant Ecomax Ii 1970mm Flue Extension Kit

    Vaillant Ecomax Ii 1970mm Flue Extension Kit(PVA303905)

    £92.39 (£76.99 exc. VAT)
  • Vaillant Ecomax Ii Telescopic Duct Extension

    Vaillant Ecomax Ii Telescopic Duct Extension(PVA303906)

    £63.96 (£53.30 exc. VAT)
  • Vaillant Ecomax Ii Telescopic Offset

    Vaillant Ecomax Ii Telescopic Offset(PVA303919)

    £85.27 (£71.06 exc. VAT)
  • Vaillant Ecomax Ii Sliding Sleeve

    Vaillant Ecomax Ii Sliding Sleeve(PVA303915)

    £43.66 (£36.38 exc. VAT)
  • Vaillant Flue Support Clips (5)

    Vaillant Flue Support Clips (5)(PVA303821)

    £41.13 (£34.27 exc. VAT)
  • Vaillant Eco Adj Flue Clip (3)

    Vaillant Eco Adj Flue Clip (3)(PVA303935)

    £55.23 (£46.02 exc. VAT)
  • Vaillant Eco Black Term Kit For StandarDegree Flue

    Vaillant Eco Black Term Kit For StandarDegree Flue(PVA303934)

    £34.08 (£28.40 exc. VAT)
125mm Diameter Flue Accessories
  • Vaillant Ecomax 1 Meter Standard Degree Flue Kit 125mm

    Vaillant Ecomax 1 Meter Standard Degree Flue Kit 125mm(PVA303209)

    £114.72 (£95.60 exc. VAT)
  • Vaillant Eco 125mm Flue Adapter

    Vaillant Eco 125mm Flue Adapter(PVA303926)

    £47.71 (£39.76 exc. VAT)
  • Vaillant Ecomax Vertical Air/Flue Duct 125mm

    Vaillant Ecomax Vertical Air/Flue Duct 125mm(PVA303200)

    £162.43 (£135.36 exc. VAT)
  • Vaillant 87 Degree Elbow 125mm Hgh Efficient

    Vaillant 87 Degree Elbow 125mm Hgh Efficient(PVA303210)

    £55.81 (£46.51 exc. VAT)
  • Vaillant Ecomax 45 Degree Bends (Pair) 125mm

    Vaillant Ecomax 45 Degree Bends (Pair) 125mm(PVA303211)

    £110.65 (£92.21 exc. VAT)
  • Vaillant Ecomax 470mm Flue Extension Kit 125mm

    Vaillant Ecomax 470mm Flue Extension Kit 125mm(PVA303202)

    £41.63 (£34.69 exc. VAT)
  • Vaillant Ecomax 970mm Flue Extension Kit 125mm

    Vaillant Ecomax 970mm Flue Extension Kit 125mm(PVA303203)

    £65.99 (£54.99 exc. VAT)
  • Vaillant Ecomax 1970mm Flue Ex Kit 125mm

    Vaillant Ecomax 1970mm Flue Ex Kit 125mm(PVA303205)

    £116.75 (£97.29 exc. VAT)
  • Vaillant Ecomax Sliding Sleeve 125mm

    Vaillant Ecomax Sliding Sleeve 125mm(PVA303215)

    £44.66 (£37.22 exc. VAT)
Variable Termination Kits
  • Vaillant Eco Vari Term Basic Set Black

    Vaillant Eco Vari Term Basic Set Black(PVA303942)

    £85.78 (£71.48 exc. VAT)
  • Vaillant Eco Vari Term Basic Set White

    Vaillant Eco Vari Term Basic Set White(PVA303946)

    £85.78 (£71.48 exc. VAT)
Programmers And Timers
  • Vaillant VRT360F Wireless Progammer Room Thermostat

    Vaillant VRT360F Wireless Progammer Room Thermostat(127959)

    £160.98 (£134.15 exc. VAT)
  • Vaillant VRC400 WeatHEr Compensator

    Vaillant VRC400 WeatHEr Compensator(127892)

    £154.71 (£128.93 exc. VAT)
  • Vaillant Ecotec Switch 140 2Channel Progammer

    Vaillant Ecotec Switch 140 2Channel Progammer(PVA306760)

    £83.43 (£69.52 exc. VAT)
Flashing Kits
High Temperature Silicone
Smoke Alarms & Carbon Monoxide Alarms
Protect your Central Heating System with Magnaclean
  • Adey MagnaClean Professional 22 mm Black

    Adey MagnaClean Professional 22 mm Black(608001)

    £116.65 (£97.21 exc. VAT)
Pressure Booster Pumps

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