What type of boiler is the Vaillant EcoTEC Plus 435 - regular, system or combi?

Looking for a gas heat only boiler for your house or flat? If you are, the Vaillant EcoTEC Plus 435 boiler may be worth considering.

You may hear a heat only boiler being called a regular boiler, a conventional boiler or a standard boiler. With a regular boiler, you need to find room within your property for a hot water cylinder with an immersion heater (usually in a landing cupboard or airing cupboard) and a cold-water tank (usually in the loft). The immersion cylinder is what keeps your hot water warm all day.

With a regular boiler, you schedule your hot water and heating for set times during the day or week, but if you forget to do so and the hot water runs out, you'll need to wait for your boiler to heat enough water before you can have a bath or shower - that can sometimes take up to an hour.

A regular boiler is suitable for homes with more than one bathroom or larger families when there is high demand for hot water. Although combi boilers are the most popular type of boiler in Britain, water pressure, volume and temperature drop if there is simultaneous demand from two or more points - for example, someone running a hot water tap when someone else is in the shower.

Is the Vaillant EcoTEC Plus 435 heat only boiler a suitable option for my house or flat?

Whether this Vaillant ecoTEC Plus 435 heat only boiler is right for where you live depends on its size or what its "output" level is. Size does not mean its physical dimensions, however - it means how powerful it is.

The output of a boiler is measured in kilowatts and indicates how much energy it can use to heat the water needed for your radiators, taps and showers. The greater the output, the more water it can heat.

A boiler whose output is too high will give you hot water and warm radiators but also higher gas bills, whereas a boiler whose output is too low will result in cheaper gas bills but the water might not always be as hot as you want it to be.

The output of the Vaillant EcoTEC Plus 435 heat only is 35 kW, so which types of property would this model be appropriate for?

An experienced PlumbProud Gas Safe boiler installer would almost certainly recommend that this Vaillant ecoTEC Plus 435 heat only boiler would be most suitable for larger properties including detached homes with 15 or more radiators and two or more bathrooms.

Making space for the Vaillant EcoTEC Plus 435

The Vaillant EcoTEC Plus 435 occupies a space of 600 mm high by 375 mm wide and 340 mm deep.

EcoTEC Plus 435 – non-condensing or condensing?

The Vaillant EcoTEC Plus 435 is a condensing gas boiler - we strongly recommend that you choose one of the latest condensing models if possible.

With a condensing boiler, you save money on your gas bills because your boiler captures and recycles the heat present in the flue exhaust gases and water vapour condensation for re-use, meaning they operate far more economically and efficiently.

Does the Vaillant EcoTEC Plus 435 heat only protect the environment?

How we heat our homes has become a pressing issue of concern for many homeowners worried about climate change and the environmental impact of their personal choices.

Dangerous levels of nitrogen dioxide emissions in larger UK cities are caused by gas boilers in domestic properties, and 14% of the UK’s greenhouse gas production is as a result of central heating.

Will you be helping the environment if you decide to install a Vaillant EcoTEC Plus 435 heat only in your home? Let’s look at the figures.

All boilers manufactured after April 2018 in the UK must be rated as an “A” on the SEDBUK grading system, subject to a minimum energy efficiency rating of 92% or above. Before that, the minimum rate was 88% - boilers with an energy efficiency of 88% or 89% were given a “B” rating. Boilers scoring 90% or more were given an "A" rating.

The energy efficiency rating for a boiler describes the amount of energy it uses and how much goes to waste in operation.

The Vaillant EcoTEC Plus 435 has an efficiency rating of 93% with a SEDBUK grade of "A".

The ERP (or Energy Related Products Directive) is a European regulation governing products which require energy to operate throughout their lives and encourages manufacturers to create products that are more environmentally friendly.

The legislation is designed to reduce the potential for harmful gas emissions during manufacturing and actual use right through to the point of final disposal.

For the Vaillant EcoTEC Plus 435, the ERP rating is "A".

How many years' warranty does the Vaillant EcoTEC Plus 435 heat only come with?

The Vaillant EcoTEC Plus 435 is supplied with a parts and labour warranty of 5 years.