The Rinnai 11i Low NOx 24kW Internal Natural Gas Water Heater & Vertical Flue Kit is a compact, high-performance continuous flow water heating system designed to deliver hot water on demand—without the risk of running out. Engineered for energy efficiency and reliability, it’s the ideal choice for domestic and commercial properties needing hot water at variable times and volumes, such as restaurants, homes, or temporary installations.
With ultra-low NOx emissions, this room-sealed, wall-mounted unit is hydrogen-ready (up to 20% blend), making it a future-proof investment. Lightweight and easy to install with a push-fit flue system, the 11i is a smart replacement for older models such as Vokera, Main, and Chaffoteaux water heaters.
✅ Continuous Flow Hot Water – Instant, endless hot water with no storage tank required
✅ Hydrogen-Ready – Supports 20% hydrogen/methane blend for future gas compatibility
✅ Ultra-Low NOx – Surpasses Eco-Design standards for reduced emissions
✅ Internal Wall-Mounted Unit – Compact and space-saving
✅ Room-Sealed Design – Enhanced safety and installation flexibility
✅ Precise Temperature Control – Adjustable from 37°C to 65°C
✅ Lightweight Build (14kg) – Easy to handle and install
✅ Push-Fit Flue Kit Included – Simplifies installation and reduces labour time
✅ Inbuilt Frost Protection – Ideal for colder environments or seasonal use
✅ Perfect for Replacements & Temporary Hot Water – Great for upgrades or emergency installations
✅ Compact Dimensions – H: 541mm x W: 373mm x D: 173mm
From its energy-efficient performance to its compact, easy-install design, the Rinnai 11i is the smart solution for reliable, on-demand hot water in both domestic and light-commercial settings.
Order now to upgrade your water heating system with the Rinnai 11i 24kW Internal Natural Gas Water Heater & Vertical Flue Kit – dependable, eco-conscious, and ready for the future.
| Brand | Rinnai |
|---|---|
| Product Type | Tankless Multi-Point Gas Water Heater |
| Installation | Internal wall mounted |
| Heat Output | 35 kW |
| Gas Type | Natural Gas |
| Hydrogen Compatibility | 20% Hydrogen Blend Ready |
| Flow Rate | 11 ltr/min raise 25°C |
| NOx Emissions | Ultra Low-NOx, meets ECO-DESIGN requirements |
| Exhaust System | Room Sealed |
| Temperature range | 35°C - 65°C |
| Ignition Type | Direct Electronic |
| Dimensions (H x W x D) | 541mm x 373mm x 173mm |
| Gas consumption - Natural gas | 4.53 - 23.7kW max |
| Weight | 14kg |
| Nominal operating pressure | 1 - 8.3 bar |
| Electrical consumption | 80W |
| Flue Type | Push Fit System |
| Regulation Compliance | ECO-DESIGN |
| Frost Protection | Built-In |
| Minimum Operating Flow Rate | 2 ltr/min |
| Warranty | 1 Year Labour, 3 Years on Parts |
✅ Continuous Flow Hot Water – Instant, endless hot water with no storage tank required
✅ Hydrogen-Ready – Supports 20% hydrogen/methane blend for future gas compatibility
✅ Ultra-Low NOx – Surpasses Eco-Design standards for reduced emissions
✅ Internal Wall-Mounted Unit – Compact and space-saving
✅ Room-Sealed Design – Enhanced safety and installation flexibility
✅ Precise Temperature Control – Adjustable from 37°C to 65°C
✅ Lightweight Build (14kg) – Easy to handle and install
✅ Push-Fit Flue Kit Included – Simplifies installation and reduces labour time
✅ Inbuilt Frost Protection – Ideal for colder environments or seasonal use
✅ Perfect for Replacements & Temporary Hot Water – Great for upgrades or emergency installations
✅ Compact Dimensions – H: 541mm x W: 373mm x D: 173mm
