Vaillant ecoTEC plus VUI combi boiler with built-in cylinder

ecoTEC plus VUI is a condensing combi boiler with a hot water cylinder built into its case, so you get stored hot water without finding room for a separate tank. It suits two-bathroom flats, small guest houses and homes where several taps are opened at once.

Capacity: 36 / 40 kW
Energy class: A

Because the water is stored, you do not wait for it to heat up when a tap is opened; up to 220 litres in ten minutes keeps the temperature steady even under heavy use. With the cylinder and boiler in one case, the installation needs no extra pump, pipework or control.

The stainless steel heat exchanger stands up well to the hard mains water in Antalya. During installation we measure the water hardness and, where needed, recommend a filter and softener ahead of the appliance.

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Technical data

Figures come from the manufacturer’s official product page and technical documents; they can vary by model and output.

Vaillant ecoTEC plus VUI – technical data table
Property	Detail
Capacity	36 / 40 kW
Heating output	30 / 35 kW
Hot water output	36 / 40 kW
Hot water performance	220 L in 10 minutes
Seasonal heating efficiency	ηs 94% (class A)
Hot water load profile	XL
Water heating efficiency	80%
Heat exchanger	Stainless steel
Annual energy consumption	14,343 / 16,666 kWh/year
Annual electricity consumption	67 / 69 kWh/year
NOx emissions	27 / 30 mg/kWh
Sound power level	48 / 51 dB(A), indoor
Energy class	A

Source: Vaillant official product page, product information sheet (ErP) and installation/maintenance manuals. Values with a stated measuring condition apply under the test conditions of that standard.

What Devka Doğalgaz does for this product

We do not just sell the appliance; our own team handles every step from selection to the annual service.

Choosing the right output

We size the appliance to your floor area, household size and hot water demand during a free survey.
Sale and installation

We invoice the appliance as an authorised dealer and carry out the pipework and flue to standard.
Commissioning

We do the first start-up, register the warranty and show you how to use the appliance on site.
Authorised service

We remind you when the annual service is due and give priority appointments across Antalya.

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