ecoFIT pure 825 Combi Gas Boiler

Overview of Vaillant ecoFIT pure 825 Combi Gas Boiler

The Vaillant ecoFIT pure 825 Combi Gas Boiler is a compact, energy-efficient heating solution from one of the UK’s most trusted boiler manufacturers.

Designed to deliver high performance while maintaining an ultra-quiet operation, the ecoFIT pure 825 is a popular choice for modern homes that demand both power and space-saving design.

This boiler is part of Vaillant’s renowned ecoFIT range, built with German engineering excellence and manufactured in the UK, combining reliability, quality, and innovation.

Ideal for smaller properties, such as flats or one-bedroom homes, the ecoFIT pure 825 offers hot water on demand without the need for a separate hot water cylinder or cold water storage tank. Its easy-to-use controls and compatibility with smart thermostats like Vaillant vSMART make it a user-friendly and energy-conscious option.

Vaillant ecoFIT pure 825 Combi Gas Boiler Key Features

1. Compact Design
The ecoFIT pure 825 is small enough to fit inside most kitchen cupboards, making it ideal for homes with limited space. Its clean and minimalistic design also ensures it doesn’t disrupt your home aesthetic.

2. High Efficiency (ErP A-Rated)
This boiler boasts an ErP A rating for both central heating and hot water, helping to reduce energy bills and environmental impact. It’s engineered for efficiency with an advanced aluminium heat exchanger and intelligent modulation.

3. Quiet Mark Approved
With its Quiet Mark accreditation, the ecoFIT pure 825 ensures minimal noise disruption, making it one of the quietest combi boilers available. You’ll hardly notice it’s on – perfect for open-plan living spaces.

4. Precision Heating with Smart Control Compatibility
Compatible with Vaillant’s vSMART system and other smart thermostats, the ecoFIT pure 825 offers full control over your home’s heating through mobile apps, improving comfort and efficiency.

5. Durable and Easy to Maintain
Built with high-quality components, including a robust heat exchanger and user-friendly display, this model ensures longevity and easy servicing – a plus for long-term reliability.

Is Vaillant ecoFIT pure 825 Suitable for My Home?

The ecoFIT pure 825 is most suited for smaller homes, flats, or apartments with 1 bathroom and up to 10 radiators. It delivers 25kW of output, providing sufficient heating and hot water without the need for external tanks.

If your household has a higher demand for hot water (e.g. multiple bathrooms or larger family), consider a higher kW model in the ecoFIT range.

Size

The Vaillant ecoFIT pure 825 has a compact size of 700mm (H) x 390mm (W) x 295mm (D). Its slimline design makes it easy to install in tight spaces such as kitchen cupboards or utility rooms, providing flexibility without sacrificing performance.

Vaillant ecoFIT pure 825 Range of Models

The ecoFIT range includes various output models to suit different home sizes and hot water needs. Here’s a breakdown of the available models, typical prices, and links to their dedicated pages:

Model	Price
Vaillant ecoFIT pure 830	£1,858 – £2,358
Vaillant ecoFIT pure 835	£1,992 – £2,492

Each model offers different kW outputs and hot water flow rates, so be sure to choose the right one for your household needs.

Vaillant ecoFIT pure 825 Warranty Period

The Vaillant ecoFIT pure 825 comes with a standard 2-year warranty, which can be extended up to 10 years when installed by a Vaillant Advance Installer. This provides long-term peace of mind and demonstrates Vaillant’s confidence in the product’s reliability and build quality.

Vaillant ecoFIT pure 825 Installation and Maintenance

Installation of the ecoFIT pure 825 should always be carried out by a Gas Safe registered engineer. The boiler is designed with straightforward installation in mind, featuring rear or top flue options, an accessible layout for serviceability, and a clear LCD display for simple diagnostics.

Regular annual servicing is recommended to maintain the efficiency of the boiler and keep the warranty valid. The low-maintenance design ensures fewer breakdowns and easier servicing, saving time and money over the boiler’s lifetime.

Benefits of Choosing Vaillant ecoFIT pure 825 Combi Gas Boiler

• Trusted Brand: Vaillant is a household name with over 140 years of heating innovation.
• Energy Savings: A-rated efficiency helps lower your energy bills while reducing your carbon footprint.
• Quiet Operation: Ideal for small or open-plan homes where noise could be a concern.
• Compact Size: Fits neatly in kitchen cupboards or tight spaces without compromising on performance.
• Smart Technology Compatible: Connects to your smartphone for remote heating control and energy insights.

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Frequently Asked Questions

Is the Vaillant ecoFIT pure 825 a combi boiler?

Yes, the ecoFIT pure 825 is a combination boiler, which means it provides both hot water and central heating directly from the boiler without needing separate tanks.

What size house is the ecoFIT pure 825 suitable for?

It’s best suited for smaller properties such as 1-2 bedroom flats or houses with one bathroom and up to 10 radiators.

How energy efficient is the Vaillant ecoFIT pure 825?

It has an ErP A rating, making it highly efficient for both heating and hot water – helping you save on energy bills.

Can I use a smart thermostat with this boiler?

Yes, the boiler is compatible with smart thermostats, including Vaillant’s vSMART system and third-party controls.

How long is the warranty on the ecoFIT Pure 825?

The boiler comes with a 2-year standard warranty, which can be extended up to 10 years when installed by a certified Vaillant Advance Installer.