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Solar Panels & Home Installations Nationwide

A white Vaillant ecoTEC exclusive Green iQ 843 43kW combi gas boiler on a green-yellow gradient background with text: "Fully Fitted," "£0 Deposit," and the boiler name in bold white letters below.

Vaillant ecoTEC exclusive Green iQ 843 43kW Combi Gas Boiler

£1,950.00

High-output premium combi for large homes, with Green iQ mode and smart connectivity.

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Solar Panels & Boiler Installations Nationwide

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The Vaillant ecoTEC exclusive Green iQ 843 43kW Combi Gas Boiler is a premium condensing combi boiler for large homes with up to 20 radiators and 2-3 bathrooms. It provides Vaillant’s highest-ever flow rate of 17.8 litres per minute at 35°C and a 94% seasonal efficiency rating (ErP A-rated, A+ with vSMART control). Measuring 720x440x406mm and weighing 43kg, it’s suitable for wall-mounted installation. It features an extra-condense heat exchanger, Green iQ mode for low gas consumption, a 1:10 modulation range, and a stainless steel heat exchanger. Quiet Mark certified, it supports vSMART control for app-based operation, is 85% recyclable, and tested for 20% hydrogen blends. It supports natural gas or LPG with a conversion kit and comes with a 5-year warranty, extendable to 10 years with a Vaillant Advance installer and boiler protection kit. Perfect for high-demand, environmentally conscious households.

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