Boiler of the Month Vaillant EcoTec Pro

Published: 02 Sep 2025 ・ Read time: 5 Mins

For an efficient natural gas boiler, known for its reliability and compact design, the Vaillant EcoTec Pro combi boiler is a top choice for many customers. As a condensing boiler, it’s A-rated for energy efficiency, making it ideal for homeowners aiming to cut energy bills and reduce their carbon footprint.

An excellent solution for small to medium-sized homes, this Vaillant boiler delivers both central heating and hot water on demand from a single, space-saving unit, removing the need for a separate water tank.

Here At City Plumbing, the home of heating, we continue our popular expert boiler recommendations, this month highlighting the impressive features and benefits of the Vaillant EcoTec Pro.

About the Vaillant EcoTec Pro 28 kW Combination Boiler

An incredibly popular and well-regarded natural gas boiler, the Vaillant EcoTec Pro is a competitively priced combi boiler that'is economical to run and solar compatible.

This is a condensing, wall-mounted boiler that combines central heating and hot water in a single unit, eliminating the need for a separate hot water cylinder or cold water tank

Choosing a Vaillant boiler is a popular decision for homeowners in the UK and beyond, and for good reason. The brand has built a strong reputation for reliability, offers the best high energy efficiency products that are quiet in optional, smart, and future ready, all while providing excellent aftercare and warranties.

Features of the Vaillant EcoTech Pro Boiler

The Vaillant EcoTec Pro 28 kW Combi Boiler is a popular choice best suited for small-to-medium-sized homes due to its efficiency and compact design. Here's a breakdown of its key features, specifications, and benefits:

Boiler Key Features and Specifications

Boiler Type: Condensing combi boiler
Fuel Type: Natural Gas (LPG models are also available)
Efficiency: A-rated for both heating and hot water, with an efficiency rating of around 94%. This means it's highly efficient and economical to run, helping to reduce energy consumption and bills.
Output:

- Central Heating (CH) Output: 25.9 kW

- Domestic Hot Water (DHW) Output: 27.2 kW

Hot Water Flow Rate: Approximately 11.1 litres per minute at a 35°C temperature rise. This is suitable for homes with one bathroom and is designed to provide hot water on demand.
Dimensions: Compact and wall-mounted, with typical dimensions of 720 x 440 x 338 mm (HxWxD). This makes it easy to install in various locations, including kitchen cupboards.
Warranty: The standard warranty is typically 2 years, but this can often be extended to 7 or even 10 years when installed by a registered Vaillant Advance installer.
Noise Level: It's been awarded the "Quiet Mark" status, indicating that it's one of the quietest products in its category, which is a great benefit for homeowners.
Convenience and Comfort: The combi boiler design provides hot water on demand directly from the mains, eliminating the need for a separate hot water cylinder or cold water storage tank. The aquaCOMFORT feature ensures hot water is delivered quickly.
Reliable and Durable: Vaillant has a strong reputation for producing reliable boilers. The ecoTEC Pro 28 is hand-built in the UK and features a high-quality stainless steel heat exchanger for durability.
Ease of Installation and Maintenance: Its design, including removable side panels and a push-fit flue system, makes it straightforward for installers to fit and service.
Environmental Responsibility: The low NOx burner and high efficiency contribute to a reduced carbon footprint.

Additional Features:

"aquaCOMFORT" warm start feature: This provides a faster delivery of hot water, reducing delays.
Built-in two-stage frost protection: Ensures the boiler can operate effectively all year round, even in colder temperatures.
Removable side panels and push-fit flue system: Designed for easy installation and maintenance.
Digital display: A user-friendly interface that provides useful information such as water temperature and pressure.
Hybrid-ready: The boiler is compatible with Vaillant's aroTHERM air-to-water heat pump hybrid system, making it a future-proof solution for those looking to transition to renewable energy.

Buy Boilers at City Plumbing

With its highly efficient construction and ongoing economical operation, alongside so many additional features, the EcoTech Pro from Vaillant makes for a superb boiler choice for so many customers. By ensuring a low energy consumption with maximum efficiency, this combination boiler helps promote optimal performance all year round, thus helping customers save on their energy bills.

Help your customers make the switch to a Vaillant boiler today. Take a look at our City Plumbing website for more information.