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Baxi Duo Tec 28 boiler

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Plumbproud rating

84.87%

Baxi Duo-tec 28 Combi Gas boiler

Our PlumbProud quality scoring system considers important factors like energy efficiency, the length of a manufacturer’s guarantee, likely running costs, and installed price to determine a boiler's value for money. This model has received 84.87% from our engineers.

You should budget around £2,000 for the supply and installation of this Baxi Duo-tec 28 Combi boiler by PlumbProud.

To contact us, please enter your postcode in the quote boxes on this page, click here to email us, or give us a call on 01604 343053. We can provide you with a free quote on the Baxi Duo-tec 28 boiler and offer professional advice and guidance on whether this Baxi Duo-tec 28 Combi boiler is the right choice for your home.


Installed price around

£2,000

GET A COMPETITIVE BOILER QUOTE

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Baxi Duo-tec 28 Combi Gas boiler frequently asked questions

Is this Baxi Duo-tec 28 boiler a combi, system or regular boiler?

You may wish to consider installing the Baxi Duo-tec 28 if you are looking for a combi boiler for your house or flat.

Traditionally, boilers needed one or more large tanks installed in your property to store their heated water or water that was to be heated later. These tanks were often too large to be practical for most homes so the combi boiler was introduced to Britain in the 1970s by manufacturers to help homeowners overcome this issue.

Instead of using tanks as storage, a combi boiler heats water on demand. It draws water from the mains and heats it instantly on demand before distributing it to wherever it is needed in a property, be it your taps or radiators.

Unfortunately, combi boilers have one main disadvantage for larger properties or larger households. Because they have a maximum volume of water that can be heated on demand at any given time, water pressure, volume and temperature will drop if, for example, someone is taking a shower and another person in your home wants to use a hot water tap at the same time.

Should I choose a Baxi Duo-tec 28 combi boiler for my house or flat?

Whether this Baxi Duo-tec 28 Combi 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 Baxi Duo-tec 28 combi is 28 kW, so which types of property would this model be appropriate for?

An experienced PlumbProud heating engineer would recommend that the most suitable type of property for a Baxi Duo-tec 28 combi would be medium-sized homes and larger apartments containing 10-15 radiators and providing hot water for two bathrooms.

As well as the output rate, you need to consider "flow rate" when choosing a combi boiler.

The flow rate describes how much water a combi boiler can draw from the mains, instantly heat, and then send to your radiators. Flow rates are measured in litres per second and this Baxi Duo-tec 28 Combi boiler's flow rate is 12 L/m.

The water in your mains pipe also has its own flow rate - normally between 10 and 12l/m in most parts of Britain. This means that, if you choose a combi boiler with a flow rate of 17l/m where local water pressure is 11lm, it won't actually process more water because of the slower flow rate of the mains.

In addition, larger households with more than one bathroom, multiple radiators, and where family members may want to use hot water at the same time (like morning showers) may actually need a boiler with a higher flow rate than either the boiler or the local mains pipe.

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 is the size of the Baxi Duo-tec 28?

The Baxi Duo-tec 28 measures 780 mm in height and has a width of 450 mm and a depth of 345 mm.

Baxi Duo-tec 28 – condensing or non-condensing?

We recommend that, if possible, you choose a condensing boiler like the Baxi Duo-tec 28.

Condensing boilers are more energy-efficient. They achieve this efficiency by capturing the heat present in flue exhaust gases and water vapour condensation and recycling that heat to, for example, warm colder water coming back from your radiators.

By choosing the latest condensing boiler, you'll also notice a significant reduction in your gas bills, particularly if you're replacing a boiler more than 15 years old.

Is the Baxi Duo-tec 28 combi good for the environment?

How we heat our homes and the damage this does to the environment has become a pressing concern for many homeowners worried about the effects and impact of climate change.

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.

Will choosing to install a Baxi Duo-tec 28 combi in your home help the environment? Let's review the figures.

Every boiler manufactured and supplied in the UK must have an energy efficiency rating of 92% (SEDBUK “A” rating). These minimums were made law in April 2018 - before that, the minimum energy efficiency rating was 88% (88%/89% = "B" SEDBUK grade, 90%+ = "A" SEDBUK grade).

The Baxi Duo-tec 28 was awarded an efficiency rating of 92% and a band rating of "A".

Energy efficiency ratings for boilers describe the amount of energy they use and waste when switched on and working.

The ERP (or Energy Related Products Directive) is European legislation affecting products that consume energy throughout their lifetime.

The aim is to encourage companies to create environmentally friendlier products that reduce harmful gas emissions during manufacturing and when in use by the end client, right through to their eventual disposal.

In the case of the Baxi Duo-tec 28, the ERP rating is "A" for heat and "A" for hot water production.

What length of warranty does the Baxi Duo-tec 28 come with?

The Baxi Duo-tec 28 boiler has a warranty covering parts and labour costs for up to 7 years after installation.


Baxi Duo-tec 28 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating92%
Band ratingA
LPG Compatible?No
P/L Warranty7 Years
Output in kW28 kW
Height780 mm
Width450 mm
Depth345 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 Duo-tec 28 Combi Gas boiler

  1. Home
  2. Baxi Duo-tec 28
Plumbproud rating for this boiler
84.87%

Our PlumbProud quality scoring system uses many different factors, such as price installed, manufacturer guarantees, energy efficiency and the likely cost of running, among others, to determine a boiler's value for money rating. This Baxi Duo-tec 28 Combi boiler scores 84.87%.

On a straightforward installation of this make of boiler using PlumbProud, you should expect to budget around £2,000.

Wondering if the Baxi Duo-tec 28 is the right boiler for your home? Then speak to a professional here by getting in touch via email or call us on 01604 343053. You can also get a free quote by entering your postcode in the box on the page.


Installed price guideline
£2,000

Get your free quote

Baxi Duo-tec 28 Gas Combi boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating92%
Band ratingA
LPG Compatible?No
P/L Warranty7 Years
Output in kW28 kW
Height780 mm
Width450 mm
Depth345 mm
MountingWall
Flow rate12 L/m
ERP HeatA
ERP WaterA

Baxi Duo-tec 28 Combi Gas boiler frequently asked questions

What kind of boiler is the Baxi Duo-tec 28 - standard, combi or system?

Suitable for a house or a flat, the Baxi Duo-tec 28 combi boiler is worth considering if you want a combi boiler.

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 the Baxi Duo-tec 28 combi boiler suitable for my house or apartment?

Selecting the right boiler for your property means selecting a boiler that is the right size. And, by size, we don't mean how big it is, we mean how powerful it is - the "output".

The output of a boiler is measured in kilowatts. The output level determines the maximum power a boiler can use in heating the water needed for the baths, showers, taps and radiators in your home.

It's important to choose a boiler with an appropriate level of output for your property. Your boiler should be able to cope with periods of peak demand in your property and not just your average usage.

An output rate that is too low will result in an inadequate supply of hot water, while an output that is too high will mean the boiler will cost more to run than is necessary.

The output of the Baxi Duo-tec 28 combi is 28 kW kilowatts, so which types of property would this be appropriate for?

An experienced Gas Safe boiler installer would recommend that the Baxi Duo-tec 28 combi boiler would be an ideal installation option for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

When choosing a combi boiler for your home, you need to think about "flow rates" as well as output rates. This Baxi Duo-tec 28 Combi boiler's flow rate is 12 L/m.

This indicates the maximum volume of hot water (measured in litres per minute) that your boiler can heat then distribute to your taps, showers and radiators at any one time. The greater the demand for hot water in your home, the higher the flow rate you will require.

However, all combi boilers like the Baxi Duo-tec 28 draw water directly from the mains and heat it instantly.

This means that they can only heat and distribute water at the rate it enters the property (the "mains pressure" rate). For example, if your mains pressure is 11 litres per minute, this will be the highest flow rate you can achieve even if your boiler's flow rate is 17l/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.


Where will the Baxi Duo-tec 28 fit in my house?

The Baxi Duo-tec 28 has the following dimensions - 780 mm high, 450 mm wide, and 345 mm deep.

Is the Baxi Duo-tec 28 non-condensing or condensing?

We recommend that, if possible, you select one of the very latest condensing gas boilers on the market like the Baxi Duo-tec 28.

Condensing boilers are better for the environment because they capture and recycle the heat still present in flue exhaust gases and water vapour condensation for re-use, meaning lower greenhouse gas emissions.

They're also a lot cheaper to run meaning that, if you're replacing a very old and inefficient boiler, the savings on your gas bill over 5-10 years add up to more than you pay for the boiler itself.

Is the Baxi Duo-tec 28 combi an energy-efficient boiler?

Concern for the environment is causing more and more homeowners to think about how they heat their homes and its impact on climate change.

We generate 14% of UK greenhouse gas emissions through centrally heating our domestic properties. Gas boilers are mainly responsible for harmful nitrogen dioxide emissions in larger British cities.

Would choosing a Baxi Duo-tec 28 combi help in the fight against climate change? What do the performance statistics suggest?

Boilers manufactured after April 2018 in the UK must achieve an "A" on the SEDBUK grading system as well as score a minimum of 92% on a separate energy efficiency test. Prior to that, the minimum was 88% - boilers rated at 88% and 89% were given a “B” rating (90% and higher were given an "A").

An energy efficiency rating describes how much energy the boiler uses and how much it wastes when in use.

The Baxi Duo-tec 28 was awarded an efficiency rating of 92% with a SEDBUK grading of "A".

In 2015, new legislation was introduced by the EU to encourage manufacturers to develop more energy-efficient products that emit fewer harmful gases throughout their lifetime.

The Energy Related Products Directive (ERP) applies to all products that consume energy, including during the manufacturing process, at the point of final disposal, and all points in between.

The ERP rating of the Baxi Duo-tec 28 is "A" for heat and "A" for hot water.

If the Baxi Duo-tec 28 combi boiler breaks down, am I covered?

The Baxi Duo-tec 28 boiler is covered by a parts and labour warranty of 7 years.


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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