Thermann 20 Continuous Flow

Thermann provide innovatively designed hot water systems that are highly reliable and made especially to suit Australian conditions. Their systems are all precision-engineered and use only the best materials and components. Customers who choose to purchase a Thermann hot water system can be confident that their system will last, as they offer market-leading warranties and excellent after sales support.

The Thermann 20 is a gas continuous flow hot water system that is suitable for medium sized households with one or two bathrooms. With the ability to produce 20 litres of hot water every minute, the average sized households can be assured that they will have sufficient hot water for their needs. Continuous flow hot water systems only heat water when it is required, rather than storing the hot water. This means that the hot water never runs out, making it suitable for families with high demand for hot water. As long as there is gas and water connected to the house, there will always be hot water available when the hot water tap is switched on.

The Thermann 20 continuous flow hot water system is suitable for households that are on a budget and would like to reduce their energy expenses. With an energy rating of 5.3 stars, this system is highly energy efficient. Because it only heats water when it is required, this means you only paying for gas when it is needed. Households switching from an older gas or electric storage hot water system will notice a significant difference on their energy bills. The Thermann 20 is available in both natural gas and LPG, depending on what the household has available. Natural gas is an especially appealing option for the budget-conscious as it is a highly efficient form of clean energy with less environmental emissions.

Thermann 20 Continuous Flow Hot Water System

The Thermann 20 has the following features:


  • Number of bathrooms – 1-2
  • Energy rating – 5.3 stars
  • Flow rate at 25°C rise – 20 litres/minute
  • Flow rate at 40°C rise – 12.5 litres/minute
  • Gas type – LPG/NG
  • Nominal gas consumption – 160 MJ/hour
  • Maximum water pressure – 1200 kPa
  • Minimum water pressure – 260 kPa
  • Relief valve pressure setting – 1400 kPa
  • Test point pressure LPG – 0.61 kPa
  • Test point pressure NG = 0.56 kPa
  • Warranty on heat exchanger -10 years

  • Unit height – 575mm
  • Unit width – 350mm
  • Unit depth – 165mm
  • Weight when empty – 16 kg

The Thermann 20 has been designed and manufactured in Japan, and features high quality Japanese technology and design. Thermann are constantly keeping up to date with the latest technology and have over 50 years of manufacturing experience, so you can trust that this is a water heater of excellent quality. The compact size of this unit makes it suitable for households with limited space, as it frees up both wall and ground space when compared to large storage hot water systems. Its compact size also allows for easy and quick installation, saving money on installation costs. The Thermann 20 also has optional controllers which allow you to adjust the temperature of the water, and an optional recess box for the unit.

Thermann offer generous warranties on their hot water systems, as they are confident in the longevity of their high quality products. The Thermann 20 has an excellent ten year parts warranty on the heat exchanger when installed domestically. Additionally, they offer a three year parts and labour warranty on all other components of the unit.


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