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Baxi 400 428 boiler

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  2. Baxi 400 428
Plumbproud rating

85.86%

Baxi 400 428 Combi Gas boiler

Using the PlumbProud boiler quality scoring system, we have rated this model at 85.86%. To determine the rating, we factor in the price installed, energy efficiency, running costs, the warranty offered, and more.

This Baxi 400 428 Combi boiler will cost around £1,700 fitted through PlumbProud where there are no complications during the installation.

Get a better understanding of installation costs for the Baxi 400 428 by entering your postcode in the box supplied on this page. You can also call our professional team with any boiler-related queries on 01604 343053. Alternatively, please click here to email us.


Installed price around

£1,700

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Baxi 400 428 Combi Gas boiler frequently asked questions

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.


Baxi 400 428 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating93%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW28 kW
Height700 mm
Width395 mm
Depth279 mm
MountingWall
Flow rate12 L/m
ERP HeatA
ERP WaterA

The top 10 rated Gas Combi boilers

Using the Plumbproud scoring system, the current 10 ten Gas Combi boilers assessed using a number of important variables are as follows:

1Vaillant ecoTEC Plus 82593.35%
2Vaillant ecoTEC Plus 83292.98%
3Worcester Bosch Greenstar 2000 25kW92.89%
4Viessmann Vitodens 050-W 29kW92.66%
5Vaillant ecoTEC Plus 83592.60%
6Worcester Bosch Greenstar CDi Compact 2892.57%
7Vaillant ecoFIT Pure 82592.39%
8Vaillant ecoTEC Plus 83892.16%
9Vaillant ecoTEC Exclusive IQ 83591.90%
10Vaillant ecoTEC Pro 2491.77%

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Baxi 400 428 boiler

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Baxi 400 428 Combi Gas boiler

  1. Home
  2. Baxi 400 428
Plumbproud rating for this boiler
85.86%

This Baxi 400 428 Combi boiler has been rated at 85.86%. Our PlumbProud boiler quality rating system uses price installed, energy efficiency, likely running costs, the manufacturer's warranty and other factors to determine the rating we give.

You should budget around £1,700 for the supply and installation of this Baxi 400 428 Combi boiler by PlumbProud.

If you would like to get in touch with us for a free quote and professional guidance and advice on whether the Baxi 400 428 is the right choice for your home, you can do so by entering your postcode in the quote boxes on this page, calling us on 01604 343053 or you can click here to email us.


Installed price guideline
£1,700

Get your free quote

Baxi 400 428 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating93%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW28 kW
Height700 mm
Width395 mm
Depth279 mm
MountingWall
Flow rate12 L/m
ERP HeatA
ERP WaterA

Baxi 400 428 Combi Gas boiler frequently asked questions

Is the Baxi 400 428 a combi, system or regular boiler?

The Baxi 400 428 is a gas combi boiler.

Traditional boilers would require you to install one or more storage tanks in your property. These tanks either kept the water warm or stored it for later heating. Manufacturers initially designed and introduced combi boilers to the market to offer homeowners the highest levels of warmth and unlimited hot water without taking up as much space.

Combi boilers provide hot water on demand for your radiators and taps. They take water directly from the mains, heat it immediately as it's needed, and then distribute the hot water around your home.

Combi boilers, however, are limited in terms of how much water they can heat at any given time. For example, if one person wishes to take a shower while another wants to turn on a hot water tap, the amount of water reaching each point drops. This results in a drop in the water pressure as well as the temperature.

Should I install a Baxi 400 428 combi boiler in my house or apartment?

To determine that, we need to consider the size of the boiler. Size doesn't mean how big it is - it means how big its "output" is.

The output rate of a boiler tells you how much power it has available to it for heating the water that comes out of your taps and warms your radiators. A higher output rate means that your boiler has more power at its disposal.

You need to make sure you select a boiler with the right output rate. That's because, if your output rate is too high, then your boiler will have more power than it needs but it will cost too much to run. If the output rate is too low, your water may often not be hot enough.

The Baxi 400 428 combi's output is 28 kW, so which types of property would this Baxi 400 428 Combi boiler be appropriate for?

A PlumbProud Gas Safe boiler installer would recommend that the level of output from this Baxi 400 428 Combi boiler would make it a suitable installation option for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

In addition to output rates, you need to consider a combi boiler's flow rate when making your choice.

The flow rate of your boiler dictates the maximum volume of water (measured in litres per minute) that it can heat and distribute to your taps, showers and radiators at any one time.

However, a combi boiler like the Baxi 400 428 can only heat and deliver water at the rate at which it actually enters your property. For this reason, you should also find out what the mains pressure to your house is before purchasing a boiler.

It's pointless spending more money on a boiler with a 17l/m flow rate if the local water pressure is 11l/m. To give you an indication of average water demand, a power shower typically requires 12 litres of water per minute and a basin tap 4-8 litres. This Baxi 400 428 Combi boiler's flow rate is 12 L/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.


What size is the Baxi 400 428 boiler?

The size of the Baxi 400 428 boiler is 700 mm high, 395 mm wide, and 279 mm deep.

Is this Baxi boiler non-condensing or condensing?

We recommend that you choose a condensing boiler wherever possible like the Baxi 400 428 - try to go for the latest model, if possible, to take advantage of improving technology.

Condensing boilers capture and recycle the warmth still present in the water vapour condensation and in flue exhaust emissions created by burning gas to make them more efficient and economical to run.

You will save money on your gas bills too, plus condensing boilers are friendlier to the environment.

Is the Baxi 400 428 combi good for the environment?

More and more homeowners are aware of the importance of how we heat our homes and its impact on climate change and other environmental issues.

Gas boilers are responsible for dangerous atmospheric levels of nitrogen dioxide emissions in Britain's biggest cities and, overall, 14% of the UK’s greenhouse gases are produced by our domestic central heating systems.

Would choosing the Baxi 400 428 combi be an environmentally-friendly choice? If so, let's look at its performance 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 Baxi 400 428 has an efficiency rating of 93% with a SEDBUK grade of "A".

The Energy Related Products (ERP) Directive is important European legislation that aims to limit energy use and harmful gas emissions during the manufacturing process, when the product is in use, and after it is disposed of.

For the Baxi 400 428, the ERP Heat rating is "A" and the ERP Water rating is "A".

Am I covered if my Baxi 400 428 combi boiler breaks down?

Baxi offers a parts and labour warranty of 5 years on the Baxi 400 428.


The top 10 rated Gas Combi boilers

Using the Plumbproud scoring system, the current 10 ten Gas Combi boilers assessed using a number of important variables are as follows:

1Vaillant ecoTEC Plus 82593.35%
2Vaillant ecoTEC Plus 83292.98%
3Worcester Bosch Greenstar 2000 25kW92.89%
4Viessmann Vitodens 050-W 29kW92.66%
5Vaillant ecoTEC Plus 83592.60%
6Worcester Bosch Greenstar CDi Compact 2892.57%
7Vaillant ecoFIT Pure 82592.39%
8Vaillant ecoTEC Plus 83892.16%
9Vaillant ecoTEC Exclusive IQ 83591.90%
10Vaillant ecoTEC Pro 2491.77%
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