Stiebel Eltron’s range of electric instantaneous water heaters deliver hot water with precision. Efficient by design, the units don’t store water so you don’t get the heat losses that occur in traditional storage hot water systems. Installed close to the point of use, and reducing dead legs – saving you both water and energy. No other instantaneous water heater with 3i technology has such a wide range of features as the DEL Plus. It offers best-in-class comfort and convenience with a backlit multifunction display, temperature memory, and ECO mode. With the energy and water saving ECO mode, the maximum flow rate of the DEL Plus can be limited so that a constant DHW temperature is possible even at low inlet temperatures.
Stiebel Eltron’s range of electric instantaneous water heaters deliver hot water with precision. Efficient by design, the units don’t store water so you don’t get the heat losses that occur in traditional storage hot water systems. Installed close to the point of use, and reducing dead legs – saving you both water and energy. No other instantaneous water heater with 3i technology has such a wide range of features as the DEL Plus. It offers best-in-class comfort and convenience with a backlit multifunction display, temperature memory, and ECO mode. With the energy and water saving ECO mode, the maximum flow rate of the DEL Plus can be limited so that a constant DHW temperature is possible even at low inlet temperatures.
Stiebel Eltron Del 18 Plus AU Electric Instantaneous Water Heater 50C 19.4kW 3 Phase
Stiebel Eltron’s range of electric instantaneous water heaters deliver hot water with precision. Efficient by design, the units don’t store water so you don’t get the heat losses that occur in traditional storage hot water systems. Installed close to the point of use, and reducing dead legs – saving you both water and energy. No other instantaneous water heater with 3i technology has such a wide range of features as the DEL Plus. It offers best-in-class comfort and convenience with a backlit multifunction display, temperature memory, and ECO mode. With the energy and water saving ECO mode, the maximum flow rate of the DEL Plus can be limited so that a constant DHW temperature is possible even at low inlet temperatures.
Stiebel Eltron’s range of electric instantaneous water heaters deliver hot water with precision. Efficient by design, the units don’t store water so you don’t get the heat losses that occur in traditional storage hot water systems. Installed close to the point of use, and reducing dead legs – saving you both water and energy. No other instantaneous water heater with 3i technology has such a wide range of features as the DEL Plus. It offers best-in-class comfort and convenience with a backlit multifunction display, temperature memory, and ECO mode. With the energy and water saving ECO mode, the maximum flow rate of the DEL Plus can be limited so that a constant DHW temperature is possible even at low inlet temperatures.
in 12 offers
The lowest price for Stiebel Eltron Del 18 Plus AU Electric Instantaneous Water Heater 50C 19.4kW 3 Phase right now is $1,375.00 at Plumbingsales.com.au, compared across 12 retailers.
The all-time low was $1,225.00 on 31 July 2025 — today's price is 12% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 27 Aug 2026.
Last updated at 27/08/2026 09:07:49
Stiebel Eltron DEL 18 Plus AU Electric Instantaneous Water Heater 50C 19.4kW 3 Phase 236741
Free delivery between 1–4 Sept
Plus AU 19.4kW Electric Instantaneous Hot Water System 50°C - Three-Phase | Stiebel Eltron DEL18
Free delivery between Mon – Wed
STIEBEL ELTRON DEL 18 Plus 50C - Melbourne
Free delivery between 28 Aug – 3 Sept
Stiebel Eltron 50°C DEL 18 Plus Electric Hot Water System - 236741
Free delivery between 28 Aug – 5 Sept
Stiebel Eltron DEL 18 Plus Electric Hot Water System DEL18PLUS
Free delivery by Sat
Stiebel Eltron DEL 18 Plus Electric Hot Water System DEL18PLUS
Free delivery
MEDIUM Instantaneous Water Heater 3-Phase STIEBEL ELTRON DEL 18 Plus
Free delivery between 28 Aug – 8 Sept
Stiebel Eltron DEL 18 Plus Electric Hot Water System DEL18PLUS
Free next-day delivery
Stiebel Eltron Hot Water System DEL | Instant | 3 Phase (Available Options: DEL18+ 19.4kW)
Delivery $73.70
3 Phase DEL18 Plus Electric Instantaneous Water Heater 236741
originally posted on appliancesonline.com.au
I have 3-phase power, and the Stiebel Electron DEL 27 works very well with just my wife and I at home and our washing machine and dishwasher using cold water (these appliances heat their water).
originally posted on appliancesonline.com.au
Happy with product, good communication from Appliances online, prompt delivery. Have bought from Appliances online before & will again. Thx
originally posted on appliancesonline.com.au
Find this small Hot water system fantastic compared to my old HWS love to be able to have a constant hot water flow.
| Fuel Type | Electric |
| Hot Water Selection | Continuous Flow |
| Temperature Control | Electronic |
| Temperature Range - Maximum | 50 °C |
| Temperature Range - Minimum | 30 °C |
Stiebel Eltron DEL 18 Plus AU Electric Instantaneous Water Heater 50C 19.4kW 3 Phase 236741
Free delivery between 1–4 Sept
Plus AU 19.4kW Electric Instantaneous Hot Water System 50°C - Three-Phase | Stiebel Eltron DEL18
Free delivery between Mon – Wed
STIEBEL ELTRON DEL 18 Plus 50C - Melbourne
Free delivery between 28 Aug – 3 Sept
Stiebel Eltron 50°C DEL 18 Plus Electric Hot Water System - 236741
Free delivery between 28 Aug – 5 Sept
Stiebel Eltron DEL 18 Plus Electric Hot Water System DEL18PLUS
Free delivery by Sat
I have 3-phase power, and the Stiebel Electron DEL 27 works very well with just my wife and I at home and our washing machine and dishwasher using cold water (these appliances heat their water).
Happy with product, good communication from Appliances online, prompt delivery. Have bought from Appliances online before & will again. Thx
Find this small Hot water system fantastic compared to my old HWS love to be able to have a constant hot water flow.
We bought this early January, as we had a leak in our old system and it was already 15 years old, so it was time for a replacement. Easy to use the dial for temp control. It is silent, our other one was pretty loud when it was on. It has a 5 year warranty, so that gives some piece of mind. Lucky it was on special, as they aren't cheap. So far, so good. I guess we will see how it goes over winter when it gets really cold here, as to how hot the 50 degree setting feels.
| Fuel Type | Electric |
| Hot Water Selection | Continuous Flow |
| Temperature Control | Electronic |
| Temperature Range - Maximum | 50 °C |
| Temperature Range - Minimum | 30 °C |
