How Much Does a New Alpha Boiler Cost With Installation?

This table provides an approximate installation cost for a new Alpha boiler. 

Boiler Type	Approximate cost of boiler	Approximate cost of installation	Approximate total cost
Combi (28kW) for small to medium homes	£650-£950	£1,200	£1,850 – £2,150
Combi (33kW) for small to medium homes	£750-£1,000	£1,200	£1,950 – £2,200
Combi (38kW) for small to medium homes	£850-£1,100	£1,200	£2,050 – £2,300
System (20-35kW) for small to medium homes	£950-£1,100	£1,700	£2,650 – £2,800
Regular (15-25kW) for small to medium homes	£750-£1,100	£1,700	£2,450 – £2,800

It is important to note that these prices are estimated based on research. To get a more accurate quote for your boiler installation, you should request quotes from at least 3 to 4 Gas Safe registered installers. They will be able recommend the right boiler type/size for your home and hot water needs and estimate how much work will be required. Alternatively, you can try our boiler installation cost calculator for a more accurate estimate based on your specific property.

Why choose an Alpha boiler?

Alpha boilers are amongst the most affordable on the market, but despite their comparatively low pricing, still provide effective and efficient heating and hot water for UK homes. 

The company is committed to continuously enhancing its product lineup, using top-tier components to create high-performance boilers that integrate seamlessly with energy-saving controls and accessories.

Who makes Alpha boilers?

Company background

Alpha Heating Innovation is based in the UK. Alpha is a trusted boiler manufacturer with over 50 years of expertise in producing high-quality heating appliances. 

Alpha is a part of the Immergas Group, an Italian-owned leader in heating solutions, known for its state-of-the-art production facilities and advanced technology.

Types of Alpha boilers

Alpha offers a range of six models, including four combi boilers and two system boilers, with heat outputs varying from 20kW to 115kW. The Alpha E-Tec NX was included in our top 10 best combi boilers, we said it was perfect for small to medium sized homes, well regarded and comes with a good warranty.

Alpha combi boilers

Combi boilers are compact, all-in-one units that draw water directly from the mains. They provide hot water for both heating and domestic use as needed, offering convenience and energy efficiency since they only heat water when it’s required.

However, since combi boilers don’t store hot water, they can struggle to maintain water pressure when multiple taps demand hot water simultaneously. This can make them less suitable for larger homes or households with higher hot water demands.

Alpha’s range of gas combi boilers includes boilers for small, medium and large homes including:

• E-Tec Plus NX (28kW, 33kW, 38kW)
• E-Tec NX (28kW, 33kW)
• Evoke NX (28kW, 33kW)

All Alpha combi boilers have an ErP efficiency rating of A for both central heating and hot water and include a warranty of 7 or 10 years. An extended warranty of up to 13 years is available on the E-Tec Plus NX.

Alpha system boilers

System boilers also draw water directly from the mains, but they work alongside a hot water cylinder which is usually stored in an airing cupboard. The cylinder stores the hot water produced by the boiler, ensuring a larger volume of hot water is available to supply multiple radiators, taps, or showers at once without affecting water pressure.

Alpha’s range of gas system boilers includes boilers for small, medium and large homes including:

• E-Tec NXS (20kW, 30kW, 35kW)

While the boiler will only provide hot water for your central heating, it can be used with Alpha’s range of high efficiency cylinders to also provide hot water for your taps. 

All Alpha system boilers have an ErP efficiency rating of A for central heating and include a warranty of 7 to 10 years.

💡Top tip: You can contribute your own experiences by submitting how much you paid for your new boiler, or any other work you’ve recently had done. Your information helps us ensure our data is as up to date and as helpful as possible! 

Alpha regular boilers

Regular boilers (also known as heat-only, traditional or conventional boilers) are similar to system boilers in that they work alongside a hot water cylinder, allowing them to supply multiple water outlets at once.

The key difference between a system and a regular boiler is that regular boilers don’t draw their water supply from the mains. Instead, they rely on a large cold water feeder tank, usually located in the attic.

Regular boilers were the original design before technology allowed for direct connection to the mains, which typically results in stronger water pressure. Despite this, regular boilers can still be an Alpha heating solution in modern homes, especially in areas with low mains water pressure. 

Alpha’s range of gas regular boilers includes boilers for small, medium and large homes including:

• E-Tec Regular (28kW, 33kW, 38kW)

Alpha’s regular boilers have an ErP efficiency rating of A for central heating and a 7-year warranty. 

Alpha boiler models and price guide

The price of an Alpha boiler model will be influenced by the model you choose and by the size of the boiler you require. Below are some approximate Alpha combi boiler prices, excluding installation, based on online research.

Alpha combi boiler prices

Model	Average Price
E-Tec Plus NX 28kW	£900
E-Tec Plus NX 33kW	£1,000
E-Tec Plus NX 38kW	£1,100
E-Tec NX 28kW	£800
E-Tec NX 33kW	£850
Evoke NX 28kW	£750
Evoke NX 33kW	£800

Alpha system boiler prices

Model	Average Price
E-Tec NXS 20kW	£925
E-Tec NXS 30kW	£1,000
E-Tec NXS 35kW	£1,075

Alpha regular boiler prices

Model	Average Price
E-Tec Regular 28kW	£750
E-Tec Regular 33kW	£800
E-Tec Regular 38kW	£850

Comparison of prices across models

From this research, Alpha’s cheapest boiler models are regular boilers, followed by combi and then system boilers are the most expensive. It’s important to note that these prices do not include the cost of installation which will be impacted by the complexity of the work involved. 

Best Alpha boilers for different homes

Having examined the typical cost of Alpha boilers including and excluding installation, your next task is to identify the best boiler model for your home. 

It’s best to seek advice from at least one qualified heating engineer before purchasing a boiler to make sure you’re getting the right solution, and gas boilers should always be installed by Gas Safe engineers. 

Here is a summary of Alpha boiler models and where they are best suited.  

Best combi boiler for small homes & apartments

The E-Tec Plus NX Combi 28kW boiler is often recommended small homes and apartments and is approved by Good Home magazine. The boiler provides heating and hot water on demand with no need for a storage cylinder which is ideal for homes where space is limited. It is covered by a 10-year warranty which can be extended up to 13 years in some cases.

Best system boiler for family homes

Busy family homes with a higher demand for hot water might look at the Alpha E-Tec NXS 30 or 35kW model. The boiler provides hot water for your central heating while a separate hot water cylinder (usually stored in an airing cupboard) stores hot water so you have access to higher volume of hot water for baths and showers without losing pressure.  includes with a 10-year heat exchanger warranty. The E-Tec NXS includes a 7-year warranty. 

Best regular boiler for large homes

The Alpha E-Tec regular boiler 38kW could be a suitable choice for larger homes with a feed tank of water in the attic and a hot water cylinder. This model has been approved by Good Homes and includes a 10-year warranty. 

Key features of Alpha boilers

While each Alpha boiler model offers its own benefits, there are some features that are found across their product range.

Energy efficiency and savings

All Alpha combi, system and regular boilers are A rated for ErP efficiency. This is the highest level of efficiency a boiler can be given, as it means for every £1 spent on fuel for your boiler, less than 10p is wasted. 

Warranty

With 7 and 10- year warranties available on the Alpha boiler range you have peace of mind that you are making a reliable investment for your home. 

Alpha boiler installation

If you decide on an Alpha boiler model you will need to find a Gas Safe engineer to install it.

Installation costs for an Alpha boiler

Installation costs for an Alpha boiler can vary based on the complexity of the job and the installer you select. On average, you can expect to pay between £1,200 and £1,700 for a professional engineer to install your Alpha boiler.

Finding the right Installer

When selecting an installer, it’s crucial to ensure they are Gas Safe registered. Only a Gas Safe certified professional is legally allowed to install, maintain, or repair gas appliances. Hiring an unqualified installer can be both illegal and dangerous.

Comparing quotes and installation costs

To ensure you’re getting a fair deal, it’s wise to compare at least three quotes from Gas Safe engineers. Comparing multiple estimates allows you to assess the best value for the work required, and you might want to check online reviews and ask for customer recommendations to ensure you choose a reliable and trustworthy installer.

Alpha boiler warranties

Installing a new boiler is not cheap so you want to ensure you are making a long-term investment that will stand the test of time. Of course, you also want peace of mind that if something were to go wrong, the manufacturer will be there to support you.  

Warranty coverage and duration

Alpha boilers are covered by at least a 7-year warranty. Some are covered by 10-year warranties, and the E-Tec Plus NX can be extended up to 13 years.  

However, it’s important to note that these warranties are only valid if you register your new boiler with Alpha and ensure it is serviced annually. You will then be able to enjoy the maximum warranty available which should give you great peace of mind. If the boiler is not registered and/or not serviced annually, the period of guarantee will be to 12 months from the date of installation.

Regularly servicing your boiler once a year is essential to ensure it operates safely and efficiently. This not only helps you save money over time but also safeguards you and your family from potential hazards, like the risk of carbon monoxide leaks.

How to extend your boiler warranty

In some cases, it may be possible to extend the standard warranty for a fee. 

Alpha service-only plans offer a thorough annual service, typically carried out during the summer months, so your boiler is in top condition ahead of the colder weather when you need it most. If your boiler is no longer under warranty, Alpha’s service and breakdown plans can provide peace of mind by protecting you from the cost of unexpected repairs.

Alpha boiler reviews & customer feedback

Customer satisfaction and reliability

Customers of Alpha consistently praise the company for speedy responses to their enquiries and quick service from knowledgeable engineers, particularly in emergency situations. In fact, many online reviews appreciate the professionalism and friendliness of the engineers, who not only resolve issues but also take the time to explain their work and provide useful maintenance tips.

Several customers and installers highlight their Alpha boiler’s consistent reliability over the years of its life.  

Common pros and cons from real users

Alpha boilers are known for their reliability, energy efficiency, and compact design, making them ideal for small homes. They offer good value for money, with user-friendly controls and strong customer support. 

However, their model range is limited, and some users report that they can be noisy when working. While Alpha provides a comprehensive warranty and responsive customer service, wait times can be longer during peak seasons, and spare parts for certain models may be harder to find. 

Overall, Alpha boilers are a solid choice for those seeking affordable, durable, and efficient heating solutions.

Decision making tips for potential buyers

Key considerations before buying an Alpha boiler

Before installing an Alpha boiler in your home, remember to seek the advice of at least 3 qualified heating engineers. Comparing multiple quotes will help you ensure you find the right boiler for your home at the right price. 

Comparing Alpha with other brands

Here we compare the leading Alpha combi boiler with comparable models from the other leading boiler brands. 

Brand	Average price excluding installation	ErP efficiency rating	Warranty
Worcester Bosch Greenstar 4000	£1,200	A – 94%	Up to 10 years
Vaillant EcoTec Plus 832	£1,400	A – 89.4%	Up to 10 years
Alpha E-Tec NX Plus	£800	A	Up to 13 years
Viessmann Vitodens 100-W	£1,500	A – 94%	7-year parts & labour warranty
Baxi 600	£950	A	7-year parts & labour warranty
Glow-worm Energy	£1,100	A	Up to 10 years

The key point of difference when comparing Alpha boilers to other leading brands is that they offer boilers with the same high-efficiency and long warranties as the leading brands, but at a lower price. 

FAQs