What type of boiler is the Atag IC Economiser 39 - regular, system or combi?

If you are considering installing a combi boiler in your house or flat, then the Atag IC Economiser 39 boiler is certainly worth investigating.

Traditional boilers have one or two tanks - one holds hot water to keep it warm and the other water for later heating. Because UK residential property is among some of the smallest in the world, manufacturers introduced combi boilers and the heat pumps that go in them in the 1970s to reduce the amount of space boilers needed to take up.

The hot water needed for your radiators and taps is available on demand when you have a combi boiler. Combi boilers use technology located within the boiler to heat cold water, which it draws from the mains, and to distribute hot water where it's needed around your home.

A combi boiler, however, has the disadvantage of a maximum capacity for the amount of water it can heat. The result is that if someone uses the shower while another uses a hot water tap simultaneously, the amount of water reaching each point falls, causing water pressure to drop.

Is a Atag IC Economiser 39 combi boiler right for my house or apartment?

You should make sure that the boiler you install in your property is the right "size". And size doesn't mean its physical dimensions, size means how much power it has - the "output".

Output measures in kilowatts how much power a boiler can use when heating water for your radiators or taps. The higher the output rate, the more water it can heat.

If the output rate is too low, your hot water might often be only lukewarm, and if it is too high, you will be paying more for your gas than you need to.

The Atag IC Economiser 39 combi boiler has an output of 31 kW, so which types of property would it be most appropriate for?

An experienced PlumbProud heating engineer would recommend that the most suitable type of property for a Atag IC Economiser 39 combi would be medium-sized homes and larger apartments containing 10-15 radiators and providing hot water for two bathrooms.

With combi boilers, you need to consider the flow rate as well as the output rate. The flow rate (shown in litres per minute) measures how much water your boiler can draw from the mains which it then instantly heats and distributes to your taps and radiators.

However, a high flow rate is of little to no value if your local water pressure is low. If your local mains water pressure is 10l/m and your flow rate is 12l/m, your boiler will only be able to process 10l/m.

If you live in an area with high water pressure but your household has multiple bathrooms and/or radiators and many members of your household want to use hot water at the same time (like morning or evening baths or showers), it's unlikely that you'll be able to find a combi with a high enough flow rate.

As an indication, a power shower needs about 10 litres of water per minute, whereas the flow rate of this Atag iC Economiser 39 Combi boiler is 17 L/ml/m.

When our engineer comes out to quote you, they may recommend that you choose a heat only boiler or system boiler instead if your family's demand for hot water is higher than normal.

How large is the Atag IC Economiser 39?

The Atag IC Economiser 39 is TBC mm high by TBC mm wide by TBC mm deep.

IC Economiser 39 – non-condensing or condensing?

The Atag IC Economiser 39 is a condensing boiler – we recommend to all clients that they choose the very latest condensing boilers because their efficiency continues to improve year after year.

Condensing boilers recycle heat from both water vapour condensation and flue exhaust gases via a secondary heat exchanger. With this heat, it performs other tasks like warming up colder water returning from your radiator without having to use more gas.

You will save money on your gas bills every year by choosing a condensing boiler as well as benefitting the environment.

Is the Atag IC Economiser 39 combi boiler an environmentally friendly choice?

The effects of climate change on the environment are leading many homeowners to question the damage they might be doing by the way they heat their homes.

The heating of our homes accounts for 14% of the UK's greenhouse gas emissions. Especially in the big cities, gas boilers are responsible for dangerous levels of nitrogen dioxide emissions.

Would installing a Atag IC Economiser 39 combi boiler in your home help combat climate change? What do the figures suggest?

The energy efficiency rating for a boiler describes the amount of energy it uses and wastes during operation and there are two different ways to measure it.

All boilers manufactured and supplied in the UK must have a SEDBUK rating of “A” subject to a minimum energy efficiency score of 92% or above. Before April 2018, the minimum energy efficiency score was 88% (88/89% = "B" SEDBUK rating, 90%+ = "A" SEDBUK rating).

The Atag IC Economiser 39 scored an efficiency rating of 94% and a SEDBUK band rating of A.

The Energy Related Products Directive (ERP) is European legislation that applies to all products which use or consume energy during their lifespan, including during the manufacturing process and when they're in actual use, right through to the point of final disposal.

The aim is to encourage manufacturers to create new products that are kinder to the environment and create fewer harmful gas emissions.

The Atag IC Economiser 39 has an ERP Heat rating of "A" and an ERP Water rating of "A".

How many years' warranty does the Atag IC Economiser 39 combi come with?

The Atag IC Economiser 39 boiler comes with a parts and labour warranty lasting 14 years.