Vaillant ecoTEC Sustain 24kW Gas Combi Boiler

The Vaillant ecoTEC Sustain 24kW combi boiler delivers efficient heating and hot water for small to medium homes, featuring a high-quality stainless steel heat exchanger and low NOx burner technology to meet social housing green standards. This compact A-rated model offers compatibility with existing Vaillant flues, controls and vSMART app, making it ideal for replacements and upgrades.

Key Features

• Stainless steel heat exchanger for superior durability and heat transfer
• Modulating low NOx burner and fan for reduced emissions
• Grundfos high-efficiency pump minimising energy consumption
• Removable side panels and push-fit flue system for easy installation
• Compatible with vSMART app control and aroTHERM hybrid systems
• Quiet Mark certified for low-noise operation
• Like-for-like footprint with ecoTEC Pro for simple replacements
• Easy-to-read display with intuitive controls

Technical Specifications

Why Buy

The ecoTEC Sustain 24 combines Vaillant's proven reliability with enhanced efficiency features and green credentials, making it perfect for social housing and cost-conscious installations. Its familiar dimensions ensure seamless like-for-like replacements while compatibility with existing Vaillant accessories simplifies upgrades. The stainless steel exchanger and low NOx technology deliver long-term performance with minimal environmental impact.

Suitable For

• Small to medium homes (up to 10 radiators, 1 bathroom)
• Social housing and rental properties requiring green credentials
• ecoTEC Pro replacements needing like-for-like dimensions

Order now for the Vaillant ecoTEC Sustain 24kW combi boiler with stainless steel heat exchanger, low NOx emissions and full Vaillant system compatibility.

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

• Delivery Time: 2–4 working days
• Free Delivery on most orders
• £4.95 for small items
• £69 for Solar Panels, Batteries and other specialized large items delivery

Express Delivery

UK Mainland

• Delivery Time: 1–3 working days
• Free Delivery
• £4.95 delivery for small items

Channel Islands

• Postcodes Covered: GY*, IM*, JE* 
• Minimum Order: £50
• Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

• Postcodes Covered: BT*, HS*, KW, ZE
• Minimum Order: £50
• Delivery Fee: £35

Same Day Delivery 

• Eligible Postcodes:
  E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
• Minimum Order: £50
• Same Day Delivery Fee: £60
• Special Requests or Locations:
  For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX