James Elston

Published May 15, 2024

Countless UK homes and businesses are making the switch to energy-efficient boilers for the sake of the environment and to save on monthly costs.

If you’re planning to do the same, not only is it important to choose the right type of boiler, but to get experts to assist you with your boiler installation in Dewsbury.

This is where Eco Happy comes in. We’ve helped thousands of homes and businesses navigate the complexities of boiler installation, ensuring they can start reaping the rewards sooner rather than later.

What Type of Boiler Do You Need?

There are a number of factors to consider before you invest in a boiler. The size of your home, existing insulation, hot water requirements and your budget are just a few of the considerations.

To help make this decision a little easier, let’s look at the different types of boilers that are available to you.

Conventional boiler

Conventional boilers are what you would originally find in most UK homes, but they are slowly being phased out due to the high levels of carbon emissions they produce.

Conventional boilers consist of a boiler unit, hot water cylinder and expansion tank. Water is heated in the boiler and then stored in the hot water cylinder until it’s needed. Even though these boilers are ideal for homes with high hot water demands and they can serve multiple bathrooms and taps at once, they’re not the best long-term investment.

Combi boiler

Combi boilers have become a popular choice among homeowners because of how energy-efficient they are.

These boilers heat water on demand, which means they are ideal for single-bathroom households that have low hot water demands. Homeowners can choose between an electric and gas combi boiler. However, gas is the more affordable option.

Electric boiler

Electric boilers are compact and do not require a flue or exhaust, making them ideal for smaller spaces or apartments where gas boiler installation might be impractical.

These boilers also have fewer moving parts, which means less maintenance is generally required. When paired with other renewable energy sources, such as solar panels, electric boilers can be an efficient hot water and home heating source.

System boiler

Homes and businesses with high hot water demands would benefit from a system boiler as they can run multiple taps and showers at once.

The only downside with a system boiler is that it takes up more space because they require storage tanks, so larger properties would be a better fit. System boilers can run on electricity, liquefied petroleum gas and natural gas, which can help with cost savings.

Biomass boiler

If environmental impact and fuel availability are important to you, a biomass boiler is another option.

Properties that have high heating demands, such as larger homes, multi-building properties, farms, or commercial premises, can benefit from biomass boilers. Biomass boilers are ideal in areas with ready access to fuel sources like wood pellets, chips, or logs.

How Much Does It Cost To Install A New Boiler In Dewsbury?

The cost of a new boiler installation depends on the type of boiler you decide on, the complexity of the installation and your existing boiler system.

Fortunately, UK homeowners and businesses can also take advantage of several boiler upgrade schemes, including the Boiler Upgrade Scheme (BUS), the Home Upgrade Grant (HUG) and the Warm Home Discount Scheme.

Here’s a general idea of the costs you can expect:

New boiler costs for homes

1-bedroom homes

Type of boilerCost excluding installationCost including installationAverage cost including installation
Conventional£750 – £1,800£1,500 – £3,500£2,650
Combi£500 – £2,000£1,500 – £3,000£2,590
Electric£590 – £1,500£1,000 – £2,795£1,790
System£600 – £1,500£1,500 – £3,000£2,500
Biomass£4,000 – £12,000£7,000 – £20,000£15,500

2-bedroom homes

Type of boilerCost excluding installationCost including installationAverage cost including installation
Conventional£1,000 – £2,500£1,800 – £4,500£3,455
Combi£700 – £2,500£1,500 – £4,500£2,750
Electric£590 – £2,500£1,900 – £3,295£2,585
System£800 – £2,000£1,500 – £4,000£2,790
Biomass£5,000 – £14,000£7,000 – £20,000£15,500

3-4-bedroom homes

Type of boilerCost excluding installationCost including installationAverage cost including installation
Conventional£1,500 – £3,000£2,500 – £4,500£3,500
Combi £1,400 – £3,000£2,000 – £4,500£3,250
Electric£1,400 – £2,500£2,000 – £3,500£2,750
System£1,000 – £2,500£2,000 – £4,000£3,000
Biomass£6,000 –  £14,000£10,000 – £21,000£16,000

5+ bedroom homes 

Type of boilerCost excluding installationCost including installationAverage cost including installation
Conventional£1,800 – £3,500£3,000 – £5,500£4,250
Combi £1,800 – £3,000£2,500 – £5,000£3,750
Electric £1,500 – £2,500£2,500 – £4,000£3,250
System£1,500 – £3,000£2,500 – £5,000£3,750
Biomass£8,000 –  £20,000£10,000 –  £25,000+£17,500

New boiler costs for commercial businesses

Small businesses

Type of boilerCost excluding installationCost including installationAverage cost including installation
Conventional£1,500 – £3,000£2,500 –  £5,000£3,750
Combi£1,500 – £3,000£2,000 – £4,500£3,250
Electric£1,000 – £2,500£1,500 – £3,000£2,250
System£1,500 – £2,500£2,500 – £4,500£3,500
Biomass£5,000 – £10,000 £10,000 – £16,000£13,000

Medium-sized businesses

Type of boilerCost excluding installationCost including installationAverage cost including installation
Conventional£2,500 – £4,000 £4,000 – £6,500 £5,250
Combi£2,000 – £3,500£3,500 – £5,500£4,500
Electric£1,500 – £3,000£2,500 – £4,500£3,500
System£2,000 – £3,500£3,500 – £6,000£4,750
Biomass£6,000 – £12,000 £11,000 – £20,000£15,500

Large businesses

Type of boilerCost excluding installationCost including installationAverage cost including installation
Conventional£3,500 – £6,000£5,000 – £10,000£7,500
Combi£3,000 – £5,000£4,500 – £8,000£6,250
Electric£2,500 – £4,000£3,500 – £7,000£5,250
System£3,000 – £5,500£5,000 – £9,000£7,000
Biomass£10,000 – £16,000£18,000 – £25,000+£21,500

What Size Boiler Do You Need?

Boiler size is another factor that needs to be considered prior to installation. Most boilers have an output range of: 

  • 24-27 kW
  • 28-34 kW 
  • 35-42 kW 

The size of your home as well as the number of radiators you have will determine what size boiler you require.

Below are general guidelines for the approximate boiler sizes needed for various residential and commercial properties.

For residential homes

BedroomsBathroomsRadiatorsBoiler sizeType of boiler
111 – 624 kW to 27 kWCombi
211 – 1028 kW to 32 kWCombi or Electric
3 – 42 – 310 – 1635 kW to 40 kWSystem or Conventional
5 or more4 or more15 or more40 kW to 50 kW or moreConventional, System or Biomass

For commercial businesses

When it comes to commercial spaces in the UK, the size of your business will determine the size of the boiler you need.

SizeHot water pointsRadiatorsBoiler sizeType of boiler
Small11 – 924 kW to 30 kWCombi or System
Medium3 or more10 – 2030 kW to 40 kWSystem or Conventional
LargeMultiple20 or more40 kW to 50 kW or moreConventional or Biomass

What Are the Best Boiler Brands?

Let’s take a closer look at some of the top-rated boiler brands.

  • Alpha: Not only are these boilers cost-effective, but Alpha is also highly recommended for their reliable solutions. Customers benefit from a 7 – 10-year warranty, which is a testament to the quality of their products.
  • Ideal: This is another popular boiler brand in the UK, mainly because many of their top boilers have an efficiency rating of between 91% and 94%. Along with their competitive prices, Ideal is also known to compete with some of the more expensive brands in terms of technical features.
  • Vaillant: Vaillant has a strong focus on energy sustainability and advanced technological features, ensuring their boilers are a true investment. Their boilers include various outputs to suit different home sizes, and several models are compatible with solar thermal systems for additional eco-friendly benefits.
  • Viessmann: This German-based boiler manufacturer has been around for the last 100 years, making it one of the most trusted brands on the market. Their boilers are made with high-quality stainless steel heat exchangers, which means they don’t need to be replaced as often.
  • Worcester Bosch: Worcester Bosch is a UK boiler brand known for its high standards, quality and performance. These boilers are a top choice among countless UK homeowners and businesses. The fact that they offer great value for money is an added bonus.

When Should You Install a New Boiler?

Many people don’t realise that there is an ideal time to get a new boiler installation. It’s also important to know when to install a new system based on issues you’re experiencing with your existing boiler. 

If you’re noticing any of the following issues, you should consider installing a new boiler:

  • Strange noises: Unusual sounds like banging, whistling, or gurgling could mean you have air in the system, low water pressure, or imminent pump failure.
  • Poor efficiency: If your heating seems inadequate or if it takes longer than usual for your radiators to warm up, this might mean your boiler is not operating efficiently.
  • Unpleasant smells: If you notice unpleasant smells such as gas, it’s important to switch your boiler off immediately and contact a professional about a replacement.
  • Increased repair costs: Boiler repairs that cost you £150 or more per year are a clear sign that it’s time to replace your boiler.
  • Pilot light issues: A pilot light that keeps going out or appears yellow instead of blue can indicate a serious problem.
  • Higher fuel bills: An unexpected rise in your energy bills could suggest your boiler is no longer producing heat as efficiently as before.

When is the best time of year to install a new boiler?

The best time for boiler installation is during the spring and summer months. During these times, there’s typically less demand for heating, meaning heating engineers and installers are less busy. This can make it easier to schedule an installation, and you might even benefit from off-peak discounts.

Installing a new boiler during the warmer months also helps ensure that your central heating system is fully functional and efficient by the time colder weather arrives. This can help you avoid the discomfort and urgency of having to replace a failing boiler during the cold season when you need heating the most.

Why Choose Eco Happy?

There’s a reason why Eco Happy is the preferred expert for boiler installation in Dewsbury.

Gas Safe registered

Gas safety is not something you should take lightly. When a gas boiler installation is not done correctly, it can cause carbon monoxide leaks and even an explosion. This is why installation has to be completed by Gas Safe registered engineers, like those at Eco Happy.

Fast response times

When you’re ready to upgrade your central heating system, you generally want it done quickly. At Eco Happy, we believe in fast turnaround times and speedy installations. As one of our customers, you can expect your installation to be completed within a few days.

Professional and reliable

When you work with Eco Happy, you can rest assured knowing you’re dealing with true professionals. We partner with you to ensure your new investment is working as it should. We’re just a call away if you ever need expert guidance on choosing the right boiler and what to expect during and after installation.

Great customer service

We make it our job to ensure a customer never walks away feeling unsatisfied with our work. We take your heating system seriously and are here to walk you through the process from start to finish. This is why we’re a top-rated boiler installer in Dewsbury.

Installation of all boiler types

No matter what type of boiler you need to swap out and install, we’ve done it all. Our versatility is just another reason why we’re trusted experts among homeowners and businesses in Dewsbury. From combi and system boilers to biomass boilers, we are ready to assist.

Get Your New Boiler Installation Quote Today

If you want to take the guesswork out of boiler installation, it’s time to give us a call. We’re ready to provide you with a competitive, free quote and all the guidance you need to make an informed decision when it comes to your central heating system.

Simply send us your details and we’ll get back to you with everything you need.


What should I do with my old boiler?

The engineer who installs your boiler may be able to assist you with the disposal of your older model. If not, you can always contact your local council to take it away for you. As a last resort, you can take your boiler to a scrap yard to be recycled.

How do I know if my boiler is too big for my home?

You can usually tell if your boiler is too big if it runs for short cycles of time and turns off. Make sure that you check your heating requirements and the output of the boiler you’re considering prior to installation.

How long do combi boiler installations take?

Combi boiler installations tend to take around four to six hours and will include the removal of your older model. Installation times can vary should additional processes need to be carried out, such as a power flush.

Other Areas We Service Near Dewsbury

CastlefordOssettWood End

James Elston

Boiler Expert

James Elston is the top boiler replacement and heating expert at Eco Happy. He has over 20 years of experience in the industry, focusing on Gas Safe boiler installations and offering home-heating and energy-saving solutions to homeowners across the UK. From sourcing the most energy-efficient combi boiler to providing specialist heating advice, James ensures that Eco Happy maintains the highest standards and best customer service.

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