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Alpha Boilers: Prices, Models + Pros & Cons (2025 Guide)
- Alpha boiler prices for the average 2 to 3-bedroom home range between £750 and £1,250, powering about 8 to 10 radiators.
- Alpha provides combi, system, and conventional boilers, most commonly suitable for homes with between 2 and 4 bedrooms.
- The biggest advantage of Alpha boilers is their competitive pricing, while the biggest drawback is that they have fewer options for 5+ bedroom homes.
Alpha boilers are a popular heating system in the UK, with many great benefits. They provide great quality and can help reduce heating bills when replacing an old boiler. But are they the best choice for your home? Let’s take a look at some of the most popular models and whether they are up to the task.
That said, with so many different boilers out there, it can be difficult to find the best one for you. That’s why you need the assistance of an installer who can assess your home. Finding a reliable one can be a chore, requiring hours of research and comparing prices. However, with our service, you can easily obtain up to 3 free, non-binding quotes from trusted professionals.
Fill out a simple 30-second form, and we’ll do the rest. Click the button below to get started.
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Alpha boilers product line
Alpha gas boilers come in a variety of types and sizes. The company provides A-rated combi, system, and conventional boilers. Most boilers are between 28 and 38kW, although they have far more powerful system boilers, such as the ProTec NX.
| Model name | Output range (kW) | Efficiency | Suitable for |
|---|---|---|---|
| E-Tec Plus NX Combi | 28, 32, 36.9 | A (94%) | Small to medium sized homes (8 to 10 radiators) |
| E-Tec NX Combi | 28, 32, 36.9 | A (94%) | Small to medium sized homes (8 to 10 radiators) |
| Evoke NX Combi | 28, 32 | A (94%) | Small to medium sized homes (8 to 10 radiators) |
| E-Tec NXS System | 26.1, 30.4, 34.8 | A (94%) | Medium to large sized homes (10 to 20 radiators) |
| ProTec NX System | 48kW to 1MW (megawatt) | A (94%) | Very large homes to industrial sizes (20+ radiators) |
| E-Tec Regular | 28.3, 32, 37.9 | A (93%) | Large sized homes (16 to 20 radiators) |
Alpha’s portfolio hosts multiple boilers with a 94% efficiency, which makes them some of the most efficient boilers on the market. Even their E-Tec Regular has a 93% efficiency rating, which is great for a conventional boiler.
Alpha boilers tend to have a 7 to 13-year warranty, depending on the model. The base warranty is usually lower, but with models like the E-Tec Plus NX or the E-Tec NXS, adding additional parts such as the premier pack wall-mounting jig can lengthen it.
Alpha boiler prices in 2025
Alph’s E-Tec combi boilers are priced between £650 and £1,250. The cost of a new boiler will vary based on the model, the additional components, and the power output.
| Model | House size | Boiler output | Purchase cost | Installation cost |
|---|---|---|---|---|
| E-Tec Plus NX | 2 to 3-bedroom | 28kW - 36.9kW | £900 - £1,250 | £1,000 - £2,000 |
| E-Tec NX | 2 to 3-bedroom | 28kW - 36.9kW | £700 - £1,050 | £1,000 - £2,000 |
| Evoke NX | 2 to 3-bedroom | 28kW - 32kW | £650 - £900 | £1,000 - £2,000 |
The E-Tec Plus NX is Alpha’s premium model, offering many improvements over the NX, such as a better warranty, additional heating components, and some new operational features.
Aside from combi boilers, Alpha also provides system and conventional boilers. While getting a combi boiler for a large house is occasionally viable (depending on its maximum output), system and conventional boilers are more appropriate for bigger properties. Combi boilers cannot supply high quantities of water to multiple outlets and are best suited for homes with up to ten radiators and less than two bathrooms.
Alpha has two system boiler lines: The E-TEC NXS and the ProTec NX. The former is a reasonably priced system boiler for medium to large homes, costing between £900 and £1,200. The latter is made for even larger homes and (depending on the sub-model) can accommodate large industrial properties as well.
| Model | House size | Boiler output | Purchase cost | Installation cost |
|---|---|---|---|---|
| E-Tec NXS | 3 to 5-bedroom | 26.1kW - 34.8kW | £900 - £1,200 | £1,000 - £2,000 |
| ProTec NX | 5+ bedrooms/ industrial | 48kW - 1MW | £1,500 - £3,000+ | £1,000 - £2,000 |
We only recommend one of these boilers for the average consumer. E-Tec NXS is meant for most homes, while the ProTec is designed for large properties or even industrial facilities. With a maximum 1MW (megawatt) heating output, this boiler is not recommended for day-to-day domestic use, but may be well at home in a mansion.
| Model | House size | Boiler output | Purchase cost | Installation cost |
|---|---|---|---|---|
| E-Tec Regular | 4 to 5-bedroom | 28.3kW - 37.9kW | £700 - £900 | £1,000 - £2,000 |
The E-Tec Regular is Alpha’s only conventional (or regular) boiler on the market right now. It can manage a 5-bedroom house while keeping the main unit compact and relatively easy to install. The purchase cost for the main unit is quite low, although one should keep in mind that conventional boilers have a lot of external parts. This one is only recommended if you already have loft space for a cold water feed tank and additional room for a hot water storage cylinder.
All of Alpha's boilers, regardless of type, are LPG compatible. Alpha does not provide oil boilers or electric options. However, it does have hybrid heat pumps, which mix the benefits of boilers with those of heat pumps. These can be much more expensive to install than boilers.
Another factor that weighs heavily on your final installation cost is the installer. That’s why finding the right one is key. With our service, you can do that with ease. No need to spend hours hunting for a credible company and comparing prices. Just fill out a quick 30-second form, and you can easily compare their rates.
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Installation, servicing and financing of Alpha boilers
Alpha boiler installation costs are within the standard range of £1,000 - £2,000 . For UK homeowners, the purchase price starts at £650, which is cheaper than many other competing brands. This allows for an affordable installation without sacrificing quality.
Alpha boilers come with a standard warranty, which can usually be extended by adding optional high-quality components recommended by the manufacturer. This may cost more (£200 to £250), but if longevity and the peace of mind provided by extended coverage matter to you, it may well be worth it.
Servicing the boiler can cost between £70 and £130, depending on the extent of the repairs. If your boiler is outside of the warranty period, you can also sign up for a boiler cover plan, which the company provides at a price of £10 to £25 per month.
Alpha boilers advantages & disadvantages
- Competitive pricing: Alpha boilers are often priced in the £600 to £900 range, making them affordable and effective. These are favourable rates compared to Viessmann or Worcester Bosch boilers (other premium brands), which can start above the £1,000 range, on average.
- Great customer reviews: Alpha has a Trustpilot score of 4.7 out of 5, being a highly regarded company. Customer reviews also highlight the affordability along with competitive specs and performance.
- Compact models available: The E-Tec Regular can be as small as 600 x 390 x 305mm, with other Alpha boiler models not being that much bigger. “Compact” boilers tend to be around 700mm x 400mm x 300mm, fitting easily into a cupboard.
- Good extendable warranty: Warranties can be extended up to 13 years for many of their boilers, once you apply additional add-ons. While the standard warranty is 7 years, it is still much higher than many brands on the market.
- Limited options for large homes: While Alpha is great for the average household, they primarily provide combi boilers, which are not usually ideal for properties with 2 or more bathrooms and higher water consumption. The choices for high-power system and conventional boilers are rather limited.
- Only provides gas boilers: The options for alternative fuels are limited, even with the possibility of LPG usage. Gas can be the cheapest option, but not every home is on the gas grid and may require oil or electric models.
- Noise levels: Compared to many other quality brands, Alpha boilers lag behind in terms of noise level. With a noise threshold between 52dB to 55dB, it is more than most other quality boilers, which can be as quiet as 36dB (like the Viessmann Vitodens).
How do Alpha boilers compare to other boiler brands?
Here’s how Alpha stacks up against other, larger boiler manufacturers:
| Brand/Feature | Alpha | Worcester Bosch | Baxi | Viessmann |
|---|---|---|---|---|
| Price | £650 - £1,250 | £800 - £4,000 | £660 - £1,550 | £1,050 - £2,200 |
| Warranty | 7 to 13 years | 10 to 12 years | 2 to 10 years | 5 to 12 years |
| Noise | 52dB to 55dB | 43dB to 50dB | 39dB to 45dB | 36dB to 46dB |
| Hot water flow (litres per minute) | 12.1 to 15.9 l/min | 9 to 20.3 l/min | 9.8 to 16.4 l/min | 10 to 21.2 l/min |
| Trustpilot rating | 4.7/5 | 4.6/5 | 4.6/5 | 4.4/5 |
Alpha boilers compete well in terms of price and warranty. Baxi tends to be the cheapest of the big brands, but Alpha gives them a good run for their money, and is far cheaper than many other alternatives.
Alpha’s Trustpilot score is the highest among the companies compared, at least in the Trustpilot UK website ratings. Their weakest point is that they are louder than their competitors, often by a large margin. While the maximum hot water flow rate is not the highest, Alpha boilers are within a decent range.
Overall, they compete well against many of the best combi boilers in the UK, while also having a lower price.
Are Alpha boilers the right choice for your UK home?
Alpha boilers are a great option in terms of value for money, especially if you live in the UK. They provide great service as indicated by online word of mouth, and are well-regarded by independent organisations like Good Homes. Alpha also provides all 3 major types of gas boilers, albeit not as extensively as many other manufacturers.
While the standard warranty is quite average, opting for add-ons that increase coverage time can help remedy this. Getting Alpha boilers in the UK has additional advantages, such as easy access to parts at a low cost. Overall, Alpha has a lot going for it, even if its fuel and boiler type options are a bit sparse.
Looking for a new boiler? It can be tricky sifting through all the choices and matching them to your needs. That’s why it’s best to find an installer who can guide you. However, finding a reliable one can be a hassle that takes up hours of careful research and comparing offers. Worse yet, you’ll never know if the company is reliable till it’s too late. Our service can simplify all of that.
We have a network of installers we’ve personally vetted. All you have to do is fill out a 30-second form and we’ll provide you with up to 3 free, non-binding quotes from trusted professionals in your area. Click the button below to get started.
- Quotes from local engineers
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- Save up to £975
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