The Instano range consists of three instantaneous water heaters with a capacity of 27.0 kW to 60.9 kW. This appliance can meet a load profile of XL to XXL and has an ErP efficiency of 88% to 92%. The compact dimensions and low weight make it the perfect hot water solution for application in larger households.


  • Maximum working pressure 10 bar
  • Stainless steel heat exchangers
  • Low NOx
  • Maximum set point 75°C
  • Equipped with a LCD display with stand-by option
  • Electronic ignition
  • Room-sealed product
  • Suitable for natural gas and propane


  • Energy efficient, modulating burner
  • High-efficiency 107% (gross)
  • Compact design


Quick downloads

Below you will find a download to Autocad drawings per unit.

Quick downloads

Below you can download the energy label of each water heater. This label shows the efficiency per device.

Quick downloads

Please find below flue parts information per unit. Each document contains all necessary information on configuration, parts and assembly.

Quick downloads

Below you will find Instruction Manuals with information about the installation, commissioning and maintenance of your installation.

Quick downloads

Please find below all information on the parts and accessories that are available for each water heater.

Quick downloads

Here you can download the product cards per device.

Quick downloads

Below you can download our spec sheets. These sheets contain all possible information regarding technical specifications such as the load profile, input, draw-off capacity,  dimensions and installation options.

Ecodesign specifications

Instano Load profile Energy efficiency class Energy efficiency
25 XL A 90%
35 XXL A 92%
60 XXL A 88%


As a manufacturer of high-end appliances A.O. Smith claims to maximize user convenience and comfort. Therefore, we must be able to support and guarantee that our products run impeccably.

Customer satisfaction throughout the service life of our products, that´s A.O. Smith´s promise.
By offering a comprehensive range of services (such as sizing, commissioning, service and maintenance) A.O. Smith validates that promise.


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