A Guide To Vaillant Boilers

Vaillant is a well-known and reputable brand in the heating industry, particularly when it comes to boilers. They offer a wide range of high-quality boilers that are known for their efficiency, reliability, and innovation. This article will discuss popular Vaillant models. We will also discuss the prices associated with Vaillant boilers and factors that influence the cost of installation.

Table of Contents

Vaillant Combi Boilers Prices

(All prices are approximate)

Vaillant ecoTEC Plus Series (Combi Boilers)
ecoTEC PLUS 940 Picture
ecoTEC Plus 900 Series (Combi Boilers)

Vaillant 2023 ecoTEC Plus 940 (40kW) – Approx. £1,900

ecoTEC PLUS 840 Pictures
ecoTEC Plus 800 Series (Combi Boilers)

Vaillant 2023 ecoTEC Plus 840 (40kW) – Approx. £1,560

Vaillant 2023 ecoTEC Plus 836 (36kW) – Approx. £1,460

Vaillant 2023 ecoTEC Plus 832 (32kW) – Approx. £1,380

Vaillant 2023 ecoTEC Plus 826 (26kW) – Approx. £1,260

EcoTEC Pro COMBI Picture
Vaillant ecoTEC Pro Series (Combi Boilers)

Vaillant ecoTEC Pro 30kW (30kW) – Approx. £1,560

Vaillant ecoTEC Pro 28kW (28kW) – Approx. £1,100

Vaillant ecoTEC Pro 24kW (24kW) – Approx. £970

EcoTEC Exclusive COMBI Picture
Vaillant ecoTEC Exclusive Green iQ Series [800 Series] (Combi Boilers)

Vaillant ecoTEC Exclusive Green iQ 843 – Approx. £1,800

Vaillant ecoTEC Exclusive Green iQ 835 – Approx. £1,500

Vaillant ecoFIT Pure Series (Combi Boilers)

Vaillant ecoFIT Pure 825 (25kW) – Approx. £940

Vaillant ecoFIT Pure 830 (30kW) – Approx. £1,000

Vaillant ecoFIT Pure 835 (35kW) – Approx. £1,110

Vaillant Regular Boilers Prices

(All prices are approximate)

ecoTEC PLUS Heat Only Boiler Picture
Vaillant ecoTEC Plus Series (Regular Boilers)
ecoTEC Plus 400 Series (Regular Boilers)

Vaillant ecoTEC Plus 435 (35kW) – Approx. £1,600

Vaillant ecoTEC Plus 430 (30kW) – Approx. £1,120

Vaillant ecoTEC Plus 424 (24kW) – Approx. £1,040

Vaillant ecoTEC Plus 418 (18kW) – Approx. £990

Vaillant ecoTEC Plus 415 (15kW) – Approx. £900

Vaillant ecoTEC Plus 412 (12kW) – Approx. £810

ecoFIT Pure Heat Only Boiler Picture
Vaillant ecoFIT Pure Series (Regular Boilers)
ecoFIT Pure 400 Series (Regular Boilers)

Vaillant ecoFIT Pure 435 (35kW) – Approx. £1,600

Vaillant ecoFIT Pure 430 (30kW) – Approx. £1,090

Vaillant ecoFIT Pure 425 (24kW) – Approx. £1,040

Vaillant ecoFIT Pure 418 (18kW) – Approx. £950

Vaillant ecoFIT Pure 415 (15kW) – Approx. £860

Vaillant ecoFIT Pure 412 (12kW) – Approx. £820

Vaillant System Boilers Prices

(All prices are approximate)

ecoTEC PLUS System Boiler Picture
Vaillant ecoTEC Plus Series (System Boilers)
ecoTEC Plus 600 Series (System Boilers)

Vaillant ecoTEC Plus 635 (35kW) – Approx. £1,600

Vaillant ecoTEC Plus 630 (30kW) – Approx. £1,440

Vaillant ecoTEC Plus 625 (25kW) – Approx. £1,330

Vaillant ecoTEC Plus 620 (20kW) – Approx. £1,190

Vaillant ecoTEC Plus 615 (15kW) – Approx. £1,080

Vaillant ecoTEC Plus 610 (10kW) – Approx. £1,000

ecoFIT Pure Heat Only Boiler Picture
Vaillant ecoFIT Pure Series (System Boilers)
ecoFIT Pure 600 Series (System Boilers)

Vaillant ecoFIT Pure 630 (30kW) – Approx. £1,360

Vaillant ecoFIT Pure 625 (25kW) – Approx. £1,250

Vaillant ecoFIT Pure 618 (18kW) – Approx. £1,360

Vaillant ecoFIT Pure 615 (15kW) – Approx. £1,020

Vaillant ecoFIT Pure 612 (12kW) – Approx. £940

EcoTEC Exclusive System Picture
Vaillant ecoTEC Exclusive Green iQ Series [600 Series] (System Boilers)

Vaillant ecoTEC Exclusive Green iQ 627 – Approx. £1,390

Stay Warm All Year with a Boiler You Can Trust

Installed By Qualified Heating Engineer

Warranty Information for Vaillant Boilers

5-Year Warranty – Efficient & Reliable Heating
5 year warrant Valliant - Picture

The Vaillant ecoFIT pure range offers a compact and highly efficient heating solution. Designed for smaller to mid-sized homes, these boilers provide outstanding performance while maintaining energy efficiency. Whether you require a combi, system, or heat-only option, the ecoFIT pure series is engineered for reliability and easy installation.

Vaillant ecoFIT pure (Combi Boilers)

Vaillant ecoFIT pure 825 (25kW)
Vaillant ecoFIT pure 830 (30kW)
Vaillant ecoFIT pure 835 (35kW)

Vaillant ecoFIT pure (System Boilers)

Vaillant ecoFIT pure 612 (12kW)

Vaillant ecoFIT pure 615 (15kW)

Vaillant ecoFIT pure 618 (18kW)

Vaillant ecoFIT pure 625 (25kW)

Vaillant ecoFIT pure 630 (30kW)

Vaillant ecoFIT pure (Heat-Only Boilers)

Vaillant ecoFIT pure 412 (12kW)

Vaillant ecoFIT pure 415 (15kW)

Vaillant ecoFIT pure 418 (18kW)

Vaillant ecoFIT pure 425 (25kW)

Vaillant ecoFIT pure 430 (30kW)

Vaillant ecoFIT pure (Combi Boilers)

Vaillant ecoFIT pure 825 (25kW)
Vaillant ecoFIT pure 830 (30kW)
Vaillant ecoFIT pure 835 (35kW)

7-Year Warranty – Advanced Efficiency & Comfort
7 year warrant Valliant - Picture_

The Vaillant ecoTEC Plus range offers enhanced performance, superior energy efficiency, and greater durability. These models are designed for homeowners who want a balance between premium performance and long-term peace of mind.

Vaillant ecoTEC Plus (Combi Boilers)

ecoTEC Plus 825 (25kW)

ecoTEC Plus 832 (32kW)

ecoTEC Plus 835 (35kW)

ecoTEC Plus 838 (38kW)

Vaillant ecoTEC Plus (System Boilers)

ecoTEC Plus 612 (12kW)

ecoTEC Plus 615 (15kW)

ecoTEC Plus 618 (18kW)

ecoTEC Plus 624 (24kW)

ecoTEC Plus 630 (30kW)

ecoTEC Plus 637 (37kW)

Vaillant ecoTEC Plus (Heat-Only Boilers)

ecoTEC Plus 415 (15kW)

ecoTEC Plus 418 (18kW)

ecoTEC Plus 424 (24kW)

ecoTEC Plus 430 (30kW)

ecoTEC Plus 435 (35kW)

10-Year Warranty – Ultimate Performance & Longevity
10 year warrant Valliant - Picture

The Vaillant ecoTEC Exclusive range delivers premium heating technology with built-in intelligence for enhanced efficiency. Ideal for larger homes with higher heating and hot water demands, these boilers come with advanced smart features and offer a 10-year warranty when installed by a Vaillant Advance installer.

Vaillant ecoTEC Exclusive (Combi Boilers)

ecoTEC Exclusive 835 (35kW)

ecoTEC Exclusive 843 (43kW)

Extended Warranty Options

  • Vaillant Advance Installers can offer extended warranties of up to 10 or 12 years on selected models.
  • Regular servicing and installation by a Vaillant-accredited engineer are required to maintain the full warranty benefits.

For more details or to find the best boiler for your home, get in touch today!

Stay Warm All Year with a Boiler You Can Trust

Installed By Qualified Heating Engineer

Top 10 Features and Benefits of Vaillant Boilers

Vaillant is a globally recognized and trusted boiler brand known for high efficiency, innovative technology, and long-lasting reliability. Whether you’re looking for a combi, system, or regular boiler, Vaillant offers solutions that cater to all types of homes and heating needs. Below, we expand on the top 10 features and benefits of Vaillant boilers:

1. High Energy Efficiency (Up to 98% Efficiency) 🔥

One of Vaillant’s standout features is its exceptional energy efficiency, with some models reaching up to 98% efficiency. This means almost all the energy produced is converted into usable heat, resulting in lower energy bills and a reduced carbon footprint.

  • Condensing technology maximizes heat recovery from exhaust gases, reducing wasted energy.
  • Vaillant’s Green iQ range is designed with self-optimizing efficiency, meaning it continually adjusts for peak performance.
  • Lower fuel consumption leads to significant savings over time.

✅ Best for: Homeowners looking to cut energy bills and improve sustainability.

2. Quiet Mark Certification (Ultra-Quiet Operation) 🤫

Many Vaillant boilers carry the Quiet Mark certification, ensuring they operate at extremely low noise levels. Unlike older or cheaper boilers that can be loud and disruptive, Vaillant models are designed with advanced soundproofing and low-vibration components.

  • Ideal for open-plan living spaces or homes where the boiler is installed near bedrooms.
  • Particularly beneficial for smaller properties and apartments, where boiler noise could be an issue.

✅ Best for: Anyone who wants a quiet, unobtrusive heating system.

3. Intelligent Load Compensation (Self-Adjusting for Efficiency) 🎛️

Vaillant boilers use intelligent sensors that automatically adjust the heating output based on real-time demand. Instead of running at full power all the time, the boiler reduces energy consumption when less heat is needed.

  • Condensing technology maximizes heat recovery from exhaust gases, reducing wasted energy.
  • Vaillant’s Green iQ range is designed with self-optimizing efficiency, meaning it continually adjusts for peak performance.
  • Lower fuel consumption leads to significant savings over time.

✅ Best for: Homes wanting a smart, cost-saving heating system that adapts to their usage.

4. Vaillant ecoTEC Exclusive with Green iQ (Smartest Boiler Technology) 🧠

The ecoTEC Exclusive Green iQ range is Vaillant’s most advanced series, featuring:

  • Self-learning technology that adapts to the household’s heating patterns.
  • Smart connectivity, allowing the boiler to communicate with thermostats for optimised energy use.
  • Sustainable design, with reduced CO₂ emissions and 98% recyclability.

✅ Best for: Homeowners looking for a future-proof, eco-friendly boiler that provides cutting-edge efficiency.

5. Compatibility with Smart Thermostats (App-Controlled Heating) 📱

Vaillant boilers seamlessly integrate with popular smart thermostats, including:

  • Vaillant vSMART (Vaillant’s proprietary control system)
  • Nest, Hive, Tado, and other third-party smart heating systems

With smart heating controls, users can:

  • Remotely control their heating and hot water from their smartphone.
  • Set heating schedules for maximum efficiency and comfort.
  • Use weather compensation technology, where the boiler adjusts based on external temperatures.

✅ Best for: Those wanting convenience, automation, and energy savings through smart technology.

6. High Hot Water Flow Rates (Powerful Performance) 🚿

Vaillant combi boilers are designed to deliver fast, consistent hot water without the need for a separate hot water cylinder.

  • High liters-per-minute (LPM) flow rates, meaning you won’t experience pressure drops when multiple taps are in use.
  • Perfect for busy households that need a strong and stable hot water supply.
  • ecoTEC Plus Combi models are ideal for homes with 2+ bathrooms, ensuring powerful performance.

✅ Best for: Families and homes with high hot water demand.

7. Stainless Steel Heat Exchanger (Durability & Longevity) 🔩

Vaillant boilers are built with stainless steel heat exchangers, which offer superior:

  • Corrosion resistance means they last longer than aluminum-based alternatives.
  • Heat retention, improving efficiency and performance.
  • Reliability, reducing breakdowns and extending the boiler’s lifespan.

✅ Best for: Homeowners looking for a durable, long-lasting boiler investment.

8. Wide Range of Boiler Types (Suited for Every Home) 🏡

Vaillant provides an extensive range of boiler types to suit all property sizes and heating requirements:

✅ Combi Boilers – Ideal for small to medium homes that need instant hot water without a separate tank.
✅ System Boilers – Great for larger homes with multiple bathrooms, as they store hot water in a cylinder for high-demand usage.
✅ Regular (Heat-Only) Boilers – Best for older homes with traditional heating setups that include tanks and radiators.

This variety ensures that every homeowner can find the perfect fit.

9. Extended Warranty (Up to 10 Years for Peace of Mind) 🛡️

Vaillant boilers come with warranties of up to 10 years when installed by a Vaillant Advance Installer.

  • Covers parts and labor, giving homeowners long-term confidence in their heating system.
  • Shows Vaillant’s commitment to reliability and quality.
  • Reduces long-term maintenance costs, as covered repairs and replacements are included.

✅ Best for: Anyone looking for security and long-term reliability.

10. Environmentally Friendly (Reduced CO₂ Emissions) 🌍

Vaillant is at the forefront of eco-friendly heating technology, complying with ErP (Energy-related Products) regulations.

  • Many models have ultra-low NOx emissions, making them environmentally responsible.
  • The Green iQ range supports hybrid heating systems, working with heat pumps and solar.
  • Vaillant’s focus on sustainability means a greener home with reduced energy waste.

✅ Best for: Eco-conscious homeowners looking to reduce their carbon footprint.

Choosing the Right Vaillant Boiler for Your Home

Selecting the ideal Vaillant boiler depends on several key factors:

✅ Home Size: A smaller home with 1-2 bathrooms typically suits a 24-30kW combi boiler, while larger homes with multiple bathrooms may require a 35-40kW model for optimal heating and hot water supply.

✅ Hot Water Demand: If your household frequently uses hot water at the same time, a Vaillant system boiler with a separate hot water cylinder may be the best choice, or a high-output combi boiler for powerful, on-demand hot water.

✅ Energy Efficiency & Smart Features: Vaillant boilers feature self-optimizing technology and are compatible with smart thermostats like Vaillant vSMART, helping you save on energy bills while keeping your home comfortable.

✅ Budget Considerations: While Vaillant boilers are known for their premium build and energy savings, factor in installation costs and optional extras like weather compensation controls for enhanced efficiency.

By choosing the right Vaillant boiler, you can enjoy exceptional performance, reduced energy bills, and long-term reliability. 🔥💧

Vaillant Boiler Series: Reviews & Best-Suited Homes

Combi Boilers (Compact & Instant Hot Water)

✅ Best for: Smaller homes, apartments, and medium-sized houses with 1-2 bathrooms.

1️⃣ Vaillant ecoTEC Plus (Combi) – ⭐⭐⭐⭐⭐

Premium, high-efficiency combi boiler with smart load compensation for energy savings.

Best for: Homes with 1-2 bathrooms, requiring reliable heating and hot water on demand.

2️⃣ Vaillant ecoTEC Pro (Combi) – ⭐⭐⭐⭐

A cost-effective alternative to the ecoTEC Plus, offering solid performance for smaller homes.

Best for: Flats, apartments, and small homes with 1 bathroom.

3️⃣ Vaillant ecoTEC Exclusive Green iQ (800 Series) (Combi) – ⭐⭐⭐⭐⭐

The most advanced Vaillant combi boiler with Green iQ technology for maximum efficiency.

Best for: Larger homes with 2-3 bathrooms, needing high hot water flow.

4️⃣ Vaillant ecoFIT Pure (Combi) – ⭐⭐⭐⭐

A compact, budget-friendly combi boiler designed for easy installation in small spaces.

Best for: Small homes and apartments where space is limited.

Regular (Heat-Only) Boilers (For Traditional Heating Systems)

✅ Best for: Homes with a separate hot water cylinder and older radiator systems.

5️⃣ Vaillant ecoTEC Plus (Regular) – ⭐⭐⭐⭐⭐

A high-performance heat-only boiler with smart efficiency features.

Best for: Larger homes with multiple bathrooms and a traditional heating setup.

6️⃣ Vaillant ecoFIT Pure (Regular) – ⭐⭐⭐⭐

A compact and affordable heat-only boiler, suitable for smaller spaces.

Best for: Homes with existing open-vented systems looking for a modern replacement.

System Boilers (For Homes with High Hot Water Demand)

✅ Best for: Homes needing constant hot water for multiple outlets at once.

7️⃣ Vaillant ecoTEC Plus (System) – ⭐⭐⭐⭐⭐

Powerful and efficient, great for homes with multiple bathrooms and underfloor heating.

Best for: Larger households with high hot water demand.

8️⃣ Vaillant ecoFIT Pure (System) – ⭐⭐⭐⭐

A compact system boiler offering reliability and energy efficiency.

Best for: Smaller homes that require a system boiler but have limited space.

9️⃣ Vaillant ecoTEC Exclusive Green iQ (600 Series) (System) – ⭐⭐⭐⭐⭐

The ultimate high-efficiency system boiler, with cutting-edge Green iQ tech for reduced energy bills.

Best for: Larger homes with 3+ bathrooms, needing powerful heating and hot water supply.

Is a Vaillant Boiler the Right Choice for You?

Vaillant boilers are an excellent choice for homeowners looking for premium performance, energy efficiency, and long-term reliability. With a wide range of models, Vaillant caters to different home sizes and heating needs, from compact apartments to large multi-bathroom properties.

Reasons to Choose a Vaillant Boiler:

✅ High energy efficiency – Helps lower heating bills
✅ Smart technology compatibility – Works with vSMART, Nest & Hive
✅ Quiet operation – Ideal for noise-sensitive homes
✅ Durability & reliability – Built with high-quality components
✅ Extended warranties – Up to 10 years for peace of mind
✅ Eco-friendly options – Green iQ range for reduced emissions

Who Should Consider a Vaillant Boiler?

Small to medium homes needing a reliable and efficient combi boiler

Larger homes with high hot water demand, requiring a system or heat-only boiler

Homeowners looking to future-proof their heating with smart controls

Those wanting long-term energy savings with a trusted, German-engineered brand

Final Verdict

If you value efficiency, comfort, and long-term reliability, a Vaillant boiler is a solid investment. However, if you are on a tight budget, other brands like Baxi or Ideal may offer more cost-effective alternatives.

Would you like recommendations on the best Vaillant model for your home? 🔥 Call us and get started today! 

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