Top 10 Budget Boilers for 2026
Budget gas combi boilers cost about £600–£900 to buy (boiler only); fitted by a Gas Safe engineer, the cheapest fixed-price swaps start around £1,750.
Introduction
Are you looking for a new boiler and wondering how much it will cost?
On average, new boilers can cost between £500-£12,000, excluding installation. With installation fees, it can go as high as £21,000.
However, a new boiler could save you money because of lower energy bills and less maintenance.
Plus, there are many high-quality, budget boilers that you can consider.
In this guide, you’ll find out what you need to know about the top budget boilers on the market, including where you can find them and their pricing.
Top Budget Boilers for 2026
1. Heatline Capriz2 28kW Combination Gas Boiler
Type: Combination Boiler
Price: £714.10
Supplier: Travis Perkins
Efficiency rating: 89.3%
This budget Heatline Combination Boiler pack is suitable for a one- or two-bedroom house with one bathroom. It has an ErP (Energy-Related Products) “A” rating, which makes it energy-efficient.
This option is a budget-friendly choice for small families who can benefit from a top-quality boiler with an 89.3% efficiency rating.
2. Vokera Vision 25S System Boiler
Type: System Boiler
Price: £699.99 (including VAT)
Supplier: Mepstock
Efficiency rating: 89.2%
The Vokera Vision 25S System Boiler is a low-cost solution for homes with two- to three-bedrooms and one bathroom.
This boiler comes with a compact and sleek design, a 5-year warranty, a built-in 7-day digital clock, and an onboard relay.
With a system boiler, you can benefit from central heating and hot water. which is stored in a cylinder in your cupboard.
3. Ideal Logic Heat2 H24 Regular Boiler
Type: Regular Boiler
Price: £1,143.43 (including VAT)
Supplier: Mr Central Heating
This regular boiler is an excellent low-cost fit for a one-bedroom flat. It comes in a pack with both flues and controller options that can be installed quickly and effectively.
This model also has an “A” ErP rating and a 2-year warranty.
4. Alpha INTEC2 26CE Combination Boiler
Type: Combination Boiler
Price: £789.59 (including VAT)
Supplier: City Plumbing
This combination boiler features a 26kW output, suitable for a one- or two-bedroom home with one bathroom.
Alpha boilers are regarded as a highly rated choice for many households. Plus, they come with an LCD control panel, advanced combustion management, PCB memory chip, and a compact size.
5. Heatrae Amptec 4kW Electric Flow Boiler
Type: Electric Boiler
Price: £614.00 (including VAT)
Supplier: PlumbNation
Efficiency rating: 99.8%
This electric boiler is the perfect solution for homes that don’t have access to traditional gas mains.
Some of this model’s best features include:
- Controllable central heating
- Designed for pressurised or open-vent systems
- Compact design
- Silent
- Requires little maintenance
At just over £600, this is a low-cost option with a 2-year warranty.
6. Baxi 428 28kW Combination Boiler
Type: Combination Boiler
Price: £910 (including VAT)
Supplier: Boilersnbits
This combination boiler from Baxi might cost over £900, but it’s powerful enough to heat a three- or four-bedroom house easily.
Plus, this boiler has a 3-year warranty and a compact size. It’s also easy to install and requires minimum maintenance.
7. Glow-worm Easicom 3 25kW Heat Only Gas Boiler
Type: Natural Gas Regular Boiler
Price: £724.93 (including VAT)
Supplier: PlumbNation
Efficiency rating: 94%
Another cost-effective solution is this Glow-worm boiler, which uses natural gas as fuel.
This boiler is one of the most powerful for the price, able to heat up a three-bedroom house, and comes with a five-year warranty.
In addition, this model has an intuitive LCD display, an integrated timer, and a compact size.
8. Warmflow Agentis 15-21kW Boilerhouse Oil Boiler
Type: Oil Boiler
Price: £1,472.52 (including VAT)
Supplier: PlumbNation
This model could be a good choice if you need to replace an existing oil boiler.
It comes with a power output that can reach 33kW, able to heat up a four- or five-bedroom house. In addition, it has a compact design, can work with a conventional flue, and comes in a leather casing.
You can even benefit from free delivery from PlumbNation and a 2-year warranty.
9. Baxi 200 224 24kW Combi 2 Boiler
Type: Combination Boiler
Price: £821.26 (including VAT)
Supplier: PlumbNation
If you’re looking for a simple but powerful boiler, this combination boiler might be an excellent fit for your home.
This model comes in a compact size and a 2-year warranty. It also has a 24kW output, suitable for two- to three-bedroom homes. It also works with smart controls and can be operated via smartphones or tablets.
10. Ariston E-Combi One 30kW Combi Boiler
Type: Combination Boiler
Price: £665.99 (including VAT)
Supplier: Screwfix
Efficiency rating: 89.4%
This budget combination boiler has a powerful output, suitable for three- or four-bedroom houses that have up to two bathrooms.
It features a stylish and compact design, with a smooth and high-pressure water flow rate, a quiet running sound, and high-end features like LCD and pressure gauge.
You can benefit from a 2-year guarantee and the option to click and collect.
FAQs
What are the different types of boilers?
When you are looking for a new boiler, you should consider the price, the energy efficiency, and the power output.
For instance, a 28kW boiler is enough to heat a three- or four-bedroom house with one or two bedrooms. Meanwhile, a 13kW boiler is more appropriate for a one-bedroom flat.
Combination Boilers
Combination boilers are some of the most popular boilers in most homes, because they can heat both your home and water system. They also don’t require other equipment like hot water cylinders or tanks.
Moreover, they are highly efficient and have high water pressure. You can also save on installation costs because of their simple designs.
Regular Boilers
Regular or conventional boilers are found in most homes, but they require a hot water cylinder to store water for your taps and heating system.
One of the main benefits of these boilers is that you can enjoy hot water instantly because you won’t need to wait for the water to heat up.
However, one of the disadvantages is that once you run out of hot water, you need to wait for your hot water cylinder to fill up again.
System Boilers
System boilers are somewhat similar to regular boilers in that they require a hot water cylinder or tank. However, system boilers take their water from the mains.
Because of this mechanism, system boilers have better water pressure than regular boilers. Plus, you will always have access to hot water.
These boilers are easy to install, and they are known to be more cost-effective.
Oil boilers
These boilers use oil rather than traditional gas, which means that you need to have oil delivered and stored in a tank. These tanks will usually be attached to the outside of your home.
These boilers are sometimes more efficient than gas and cost less to maintain. However, they are initially more expensive to purchase.
For instance, an oil boiler will cost you around £1,000, on average. In contrast, a budget gas boiler could cost as little as £500.
Electric boilers
These boilers use electricity instead of gas or oil as fuel.
Electric boilers might be an excellent fit for you if you don’t have access to gas mains, but you should consider that electric boilers might be more expensive to run.
Some of the advantages of these boilers are that they are easier to install, they can be energy-efficient, and they have a sleek, compact design.
Natural gas boilers
Natural gas boilers could be a good fit for you if you want a more cost-effective and eco-friendly solution. These boilers also don’t require space for storage.
In addition, there’s less maintenance required because they’re generally stable and reliable.
Biomass boilers
Biomass boilers are the most sustainable models because the trees and plants used for their fuel can be replanted.
However, you might need dedicated storage space for your fuel, although some domestic boilers have an internal compartment for storing wood chips or pellets.
In addition, these boilers benefit from Renewable Heat Incentive (RHI) payments and the Boiler Upgrade Scheme.
What kind of boiler is the best?
These are the factors to consider when choosing a new boiler:
- ✔ Your budget
- ✔ The size of your home
- ✔ How often you use heating and hot water
- ✔ Whether you have the space for storage tanks
- ✔ How many bathrooms you have
- ✔ Whether you want powerful water pressure
- ✔ If you want an eco-friendly solution
How much do boilers cost?
The cost of your boiler will primarily depend on the type of boiler, the size of your home, and how powerful your boiler needs to be.
For instance, a 24kW combination boiler, which can power a three-bedroom house, could cost as little as £500. However, a 28kW combination boiler, which is suitable for a four- or five-bedroom house, could cost over £800.
Can I get help with financing a new boiler?
There are various grants available to help you buy a new boiler. Some examples are:
- The Boiler Upgrade Scheme, which allows homeowners and small business owners to upgrade their gas boiler to low-carbon heating technologies, including biomass boilers.
- The ECO Scheme, which covers most of the boiler costs, including installation, for low-income households.
- The Affordable Warmth Scheme for Northern Ireland, which aids low-income homes to upgrade to more energy-efficient heating systems, including boilers.
How long do boilers last?
Typically, a new boiler could last 15 to 20 years, but this depends on whether you give your boiler annual servicing and care.
How can I make a boiler last the longest?
You can make your boiler last as long as possible by either subscribing to a boiler cover, so if anything goes wrong you can get your boiler fixed instantly or you can pay a one-off fee for annual servicing.
An annual boiler service will usually include a visual inspection, parts replacement, leaking and corrosion checks, and efficiency tests.
How much is an annual boiler service?
Your annual boiler service could cost as little as £80, depending on your provider and what will be included in your cover.
Conclusion
While getting a new boiler can be an investment, there are many low-cost options that will give you the most value for your money. The prices depend on the power output you need and whether you want to upgrade to a more sustainable model.
Do you want to learn more about boilers in general, and find out which supplier might be the best fit for your home?
You can take a look at the guides on this site, or you can fill out a handy form at the top of the page.
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