Vaillant ecoTEC Plus Combi Boiler Review

Why Choose The Vaillant ecoTEC Plus Combi Boiler?

Hey, if you’re looking at the Vaillant ecoTEC plus, you’re checking out one of the most popular premium-mid combi boilers in the UK right now (as of December 2025).

Key Features and Advanced Technology

It’s Vaillant’s updated flagship range—remastered with clever tech like IoniDETECT that auto-adjusts combustion for optimal efficiency no matter the gas quality, wide modulation (up to 1:10) for precise control and lower bills, and full smart integration via the myVAILLANT app (works with Alexa, Google Home, Apple HomeKit).

It’s A-rated for efficiency, super quiet (Quiet Mark accredited), and delivers hot water in about 5 seconds on combi models—perfect for busy mornings.

Installer-Friendly Design and Durability

Engineers love the installer-friendly design: removable side panels, rear flue options, push-fit flues, and front access to everything for quick servicing.

The main heat exchanger is high-quality stainless steel for durability and fast heat-up, and it’s hydrogen-blend ready (up to 20%) for future-proofing.

Warranty and Long-Term Coverage

Warranty stretches up to 10-12 years with a Vaillant Advance installer and filter kit—solid long-term cover.

Is the Vaillant ecoTEC Plus Right for You? A Balanced Review

My unique perspective: The IoniDETECT is a standout—it adapts in real-time to gas variations (common in some UK areas), squeezing out every bit of efficiency without you lifting a finger.

Compared to rivals, the aluminium parts in some brands heat faster initially, but Vaillant’s stainless steel setup shines for longevity, especially in harder water zones.

It’s often a tad more affordable installed than equivalent Viessmann or Worcester premium models, with stronger smart home ties out of the box.

Downside? Slightly larger footprint than ultra-compact rivals, but the flexible flue options make up for it.

Final Thoughts

Overall, if you’re after a future-proof, smart, and efficient premium-mid combi boiler with excellent engineer support, the Vaillant ecoTEC plus is a top contender in 2025. Its high energy efficiency and advanced technology make it an ideal choice for homeowners looking to reduce their carbon footprint while enjoying reliable heating and hot water on demand. Additionally, it consistently ranks among the best combi boilers for your home, catering to various needs and preferences. With its user-friendly controls and quiet operation, it ensures comfort and convenience in any living space. For those considering a Vaillant boiler installation, it’s essential to familiarize yourself with potential issues, such as the Vaillant boiler F25 fault code explained, which indicates a problem with the water pressure. Understanding this fault can help homeowners maintain their system efficiently, ensuring optimal performance over time. This knowledge contributes to the overall reliability of the ecoTEC plus model, making it even more appealing for modern households.

Specs Table for the ecoTEC plus (Combi Models)

Popular sizes: 26kW, 32kW, 36kW, 40kW.

Specification	32kW Model	36kW Model	40kW Model
Central Heating Output	Up to 32kW	Up to 36kW	Up to 40kW
Hot Water Flow Rate	~13 l/min (35°C rise)	~14-15 l/min	~16 l/min
Energy Efficiency	ErP A-rated (94%)	ErP A-rated (94%)	ErP A-rated (94%)
Dimensions (H x W x D)	720 x 440 x 338-406mm	Similar	Similar (deeper)
Weight	~37-38kg	~38kg	~40kg
Noise	Very quiet (Quiet Mark)	Very quiet	Very quiet
Key Features	Stainless steel exchanger, IoniDETECT, touchscreen, myVAILLANT app, 5-sec HW	Same	Same, higher output
Warranty	Up to 10-12 years (Advance + kit)	Up to 10-12 years	Up to 10-12 years
Best For	Medium homes, 1-2 baths, 15 rads	Higher demand	Large homes, multiple outlets

Go higher kW for stronger simultaneous hot water if your mains flow is good.

What’s your home like—number of bathrooms, radiators, or smart home setup? That’ll help nail if the ecoTEC plus (and which size) is your ideal match!

How does the ecoTEC plus compare to the ecoTEC pro and exclusive?

Vaillant’s ecoTEC lineup:

• pro – Entry-level (solid value, basics covered)
• plus – Mid-premium (sweet spot with advanced tech)
• exclusive – Flagship (max eco features, Green iQ)

 

Side-by-side (focusing on combi models, updated 2025):

Feature	ecoTEC pro	ecoTEC plus	ecoTEC exclusive
Range Positioning	Entry-level/value	Mid-premium/most popular	Premium/flagship
Best For	Small-medium homes, 1 bath, budget	Medium homes, 1-2 baths, smart features	Larger homes, high demand, ultimate eco
Hot Water Flow Rate	~12-13 l/min	~13-16 l/min (fast 5-sec delivery)	Up to 20 l/min
Efficiency	94% ErP A-rated	94% (IoniDETECT, wide modulation)	94% (Green iQ, highest savings)
Noise Level	Quiet	Very quiet (Quiet Mark)	Ultra-quiet
Dimensions	Compact	720x440x~350mm (cupboard-friendly)	Similar
Design & Controls	Basic display	Touchscreen, myVAILLANT app	Premium with advanced modes
Key Features	Standard	IoniDETECT, easy service, H2-ready	Green iQ, recyclable parts
Warranty (Advance + kit)	Up to 7-10 years	Up to 10-12 years	Up to 12 years
Relative Price	Cheapest	Mid	Most expensive

The plus hits the balance perfectly for most—smarter and more powerful than the pro, without the exclusive’s extra cost unless you’re chasing max sustainability.