What type of boiler is the Baxi 400 428?

If you are considering installing a combi boiler in your house or flat, then the Baxi 400 428 boiler is certainly worth investigating.

Traditional boilers require at least one large cylindrical tank to work, normally housed in a large landing cupboard, utility room or the attic. As the UK has some of the world's smallest residential properties, manufacturers introduced the combi boiler in the 1970s to address the issue of space while meeting homeowners' need for central heating and hot water at the same time.

Combi boilers don't need external storage tanks. Instead, they draw water directly from the mains, heat it and then distribute it on demand to the areas where it is needed.

The most important disadvantage of combi boilers is that they have a maximum capacity for the amount of water they can heat up. This means that, if one person in your household is having a shower and another person turns on a hot water tap elsewhere, then the volume, pressure and temperature of the water to both points decreases.

Would the Baxi 400 428 combi be a suitable boiler for my house or flat?

Whether this Baxi 400 428 Combi boiler is right for where you live depends on its size or "output" level. Size does not mean its physical dimensions - it means how powerful it is.

The output level of a boiler tells you how much power it has to heat the water coming from your taps and warming up your radiators. The higher the output level, the greater the volume of water it can heat up.

If the output (measured in kilowatts) is too high, you'll pay higher gas bills and your water will be piping hot. Too low and the water coming out of your taps and being fed into your radiators will often be lukewarm.

The Baxi 400 428 combi outputs at a maximum of 28 kW, so which types of property would this Baxi 400 428 Combi boiler be appropriate for?

A Gas Safe boiler installer would say that this Baxi 400 428 Combi boiler's level of output makes it suitable for installing in medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

You'll also need to be sure to choose a combi boiler with the right flow rate for your home.

The flow rate indicates the maximum volume of hot water (measured in litres per minute) that your boiler can distribute at any given time. This means that if you and your family are likely to be using several taps and showers simultaneously or you have a lot of radiators, you need a boiler with a high flow rate. This Baxi 400 428 Combi boiler's flow rate is 12 L/m.

As with all combi boilers, the Baxi 400 428 is only able to heat and distribute water at the rate at which it actually enters your property.

For this reason, you shouldn't purchase a boiler with a very high flow rate if the flow rate in your mains pipes is lower because the extra capacity doesn't mean it can draw more water from the mains pipes.

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.

What are the proportions of a Baxi 400 428 boiler?

The Baxi 400 428 measures 700 mm in height and has a width of 395 mm and a depth of 279 mm.

Baxi 400 428 – condensing or non-condensing?

Condensing boilers like the Baxi 400 428 improve energy efficiency and reduce your annual expenditure on gas.

They do this by capturing and recycling the warmth still present in water vapour condensation and flue exhaust gases to, for example, increase the temperature of the colder water returning from your radiators.

Condensing boilers are also much better for the environment because they emit fewer greenhouse gases.

Is the Baxi 400 428 combi a good choice for the environment?

As the British public has become more conscious of climate change, many homeowners consider the environment when choosing how to heat their homes.

With central heating being responsible for 14% of greenhouse gas emissions in the UK, your choice of boiler matters. Gas boilers are also responsible for the significant atmospheric volumes of dangerous nitrogen dioxide emissions in larger British cities.

Do the available figures suggest that installing the Baxi 400 428 combi in your property would be an environmentally friendly choice?

All boilers manufactured and supplied in the UK must achieve an energy efficiency rating of at least 92% (an "A" SEDBUK grade). This is higher than the previous 88%, which was a legal requirement prior to April 2018.

The energy efficiency rating is used to work out how much energy a boiler both uses and wastes when it's switched on and working correctly - its standard functioning and operation.

The Baxi 400 428 is rated as 93% energy efficient, equivalent to a "A" SEDBUK rating.

The Energy Related Products Directive (ERP) was introduced in 2015 and it applies to all products that consume energy throughout their lifetime, including during the manufacturing process and at the point of final disposal.

The purpose of the ERP is to ensure that companies create products that are kinder to the environment by reducing both the energy they use and the harmful emissions they produce.

The Baxi 400 428 has an ERP rating of "A" for heat and "A" for hot water production.

Will I be covered if the Baxi 400 428 combi breaks down?

Parts and labour charges incurred for repairs made to your new Baxi 400 428 are covered by a 5 year warranty.