As another summer comes to an end and more work is demanded from your heating system, looking for the best choices for a struggling boiler should be a priority, with thousands of homeowners searching for reliable options that they don’t need to spend too much on. If your boiler is struggling to keep your family and home warm and healthy, then this blog can help guide you in making the right choice. Vaillant boilers offer unrivalled reliability and energy efficiency at economical prices, so they’re one of the top choices for UK homeowners looking to replace their heating system. Whether you’re thinking about the highly rated Vaillant Ecotec Pro 28 or thinking about the more expensive Vaillant Ecotec Plus 832, having a full cost breakdown can assist you in making the best decision for your comfort and your wallet.
Vaillant Boiler Prices in 2025
Vaillant boiler costs remain highly competitive in 2025, with systems ranging from £1,050 to £2,730, boiler only. Professional installations cost an extra £500 to £1,000, with the overall project costs generally coming between £2,470 to £3,700. Prices put Vaillant at the high end of the market, considering the premium German engineering and higher build quality of the brand.
Several vital factors will influence the final cost of your Vaillant combi boiler installation:
Entry-level models like the Vaillant Ecotec Pro 28 start at £1,119, while premium versions like the Vaillant Ecotec Plus 832 cost up to £1,799. The variation in cost reflects varying outputs, levels of efficiency, and features of innovation. The installation complexity will also play a big role, with a straightforward like-for-like replacement being significantly less expensive than a boiler type change or relocating your heating. Additional tasks such as power flushing (£300-£600) or magnetic filter installations (£90) can be added to overall expense.
The location will also play a role, with London and the Southeast seeing installation costs 15-20% higher than the rest of the UK.
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Top Vaillant Boiler Models
1. Vaillant Ecotec Pro 28:
The Vaillant Ecotec Pro 28 is a good value if you are looking for a combi boiler. At an average price of £1,119 including VAT, this 28kW unit offers:
- 94% efficiency rating with A-rating for heating and hot water
- 11.1 l/min flow rate best suited to homes with up to 10 radiators and a single bathroom
- Quiet Mark approval for quiet operation
- 10-year standard warranty for reassurance
Overall installation prices incorporating the unit and work are generally between £1,919 and £2,419.
2. Vaillant Ecotec Plus 832:
For larger homes that need higher output, the Vaillant Ecotec Plus 832 provides high performance, costing a higher £1,799. This top-of-the-line Vaillant combi boiler comes with:
- 32kW output with 13.1 l/min flow rate, ideal for homes with multiple bathrooms
- Smart home compatibility with myVaillant app connectivity
- IoniDetect technology for added efficiency
- 5-second hot water delivery for ultimate convenience
Full-fitting prices start at £2,570 to £3,070 including expert fitting and necessary components.
3. Vaillant Ecotec Plus Range:
The Vaillant Ecotec Plus range is the manufacturer’s best-of-the-range product, priced from £1,770. These boilers feature:
- Green iQ marking for added efficiency
- Smart controls with app connectivity
- Weather compensation technology
- Hand-built quality in Vaillant’s UK facility
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Investing in Comfort and Efficiency
Vaillant boiler prices are a good bargain when taking into account the company’s commitment to German engineering quality, efficiency, and long-term build quality. While initial investments may be higher than budget models, the value of superior performance, full warranty coverage, and potential government grant makes Vaillant an excellent choice for UK homeowners.
Professionally installed and properly serviced, your Vaillant combi boiler will provide you with comfort, convenience, and reassurance during its extremely lengthy service life.
Don’t wait for your old boiler to fail completely. Take action today by checking your eligibility for ECO4 grants that could cover your entire Vaillant boiler upgrade. Complete our simple form now and take the first step toward a warmer, more efficient home with lower energy bills.
ECO Boiler Grants only installs premium brands and high quality material to ensure your new system lasts a long-time with mimum breakdowns. Our Gas-Safe registered installers are highly experienced, allowing for a smooth and hassle-free installation. We help secure you with 12 years of warranty on your system, giving you peace of mind and comfort. Fill in our form or contact us now to learn more.
