2-in-1 function


Thermal performance testing for solar air collector; Pressure drop test; Time constant test; Visual inspection; Internal pressuretest; Rupture or collapse test; Stagnation temperature; Exposure test; Externalthermal shock; Internal thermal shock; Rain penetration; Freeze resistance; Mechanical load; Impact resistance test using steel ball; Final inspection. All above listed tests of the standard EN12975-1:2006+A1:2010 and ISO 9806:2017 were passed successfully in accordance with the criteria.


The Solar Keymark is a voluntary third-party certification mark for solar thermal products, demonstrating to end-users that a product conforms to the relevant European standards and fulfills additional requirements. It is widely spread across the European market and beyond. The Solar Keymark is a quality label.

Standard function

PRODUCT DESCRIPTION
Dec 20 2021 1 Comments

PRODUCT DESCRIPTION

Read the details:  Product-description OS10/OS20/OS30:    Heating outdoor fresh air: available in spring, autumn and winter. OS22/OS32/OS42:  2-in-1 function Heating outdoor fresh air: suitable for all models. Heating indoor air circularly mold:...

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New Arrival ! Felt Cover Solar Air Heater
Jun 17 2020 1 Comments

New Arrival ! Felt Cover Solar Air Heater

The special felt heater can be spliced ​​with aluminum alloy collector (OS20/22/30/32) and installed on a flat roof or wall. The air goes through the black felt gap (air intake volume remains unchanged) can efficiently absorb the heat of the sun, ...

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Advantage of Nakoair® Solar Air Heater
Sep 27 2018 6 Comments

Advantage of Nakoair® Solar Air Heater

1. Unique feature: Indoor air internal circulation mode:  heating indoor air internal circularly. Applicable to OS22/32/42. Heating indoor air mode, can keep heating the room air, and keeps away from any wet or cold or smog air. When people at ho...

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