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Alnor knowledge base

HRV filters - Are all filters the same?

2021-08-31HRV filters - Are all filters the same?

Air exchange is the primary function of the ventilation system. When the MVHR system is used, the air is additionally filtered for pollutants before it is supplied to the rooms. Is every air filter going to ensure we don't breathe in smog?

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MVHR system - 12 most common installation mistakes

2021-08-19MVHR system - 12 most common installation mistakes

Even the best heat recovery units can have their capacity significantly reduced if they have been installed incorrectly. Since installation mistakes do happen, knowing what to pay special attention to and how to avoid them is very important.

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What is ventilation?

2021-07-23What is ventilation?

Ventilation is nothing more than the process of removing polluted air from rooms and providing fresh air in its place. Find out about the advantages and disadvantages of natural, mechanical and hybrid ventilation!

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Heat recovery unit with or without a preheater?

2021-07-22Heat recovery unit with or without a preheater?

If we are not one of those lucky people living in a sunny place where the temperature does not drop below zero, our heat recovery ventilation system requires protection of the heat exchanger against freezing. Is it worth investing in a pre-heater?

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Low-profile Heat Recovery Unit - for Ceiling and Wall Mounted Installation

2021-07-09Low-profile Heat Recovery Unit - for Ceiling and Wall Mounted Installation

SlimAIR heat recovery unit is a low installed height of only 24.2 so perfect HRU for installations in confined spaces. Compact design with universal installation: suspended and wall installation. Find out more.

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Ducting Insulation for Heat Recovery Ventilation

2021-07-01Ducting Insulation for Heat Recovery Ventilation

MVHR installations without insulation or improper insulation are one of the most common installation errors. What types of insulation are available for ventilation systems? Find out what solution is best for you.

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Mechanical Ventilation with Heat Recovery in Existing House

2021-06-30Mechanical Ventilation with Heat Recovery in Existing House

The installation of mechanical ventilation is best planned at the time the house is designed. Is it possible to install an MVHR system in an existing house? The answer is yes. Despite being difficult, it isn't impossible. Learn why it is worthwhile to switch to mechanical ventilation.

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Ventilation system made of copper

2021-06-09Ventilation system made of copper

Ventilation system made of copper is a guarantee of aesthetics, durability and low cost of operation. Such an installation, apart from its unique style and colour, is also very durable. It does not undergo corrosion; moreover, it is resistant to changes in atmospheric conditions and air pressure in the installation.

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What is the Constant Flow (CF) module?

2021-06-02What is the Constant Flow (CF) module?

The Constant Flow is a system based on the principle of maintaining a constant airflow rate in the ventilation system. Ventilation systems will go out of adjustment during use, which is a natural process. Check out why an HRV with CF function is worth the investment

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Plenum box for Heat Recovery System - Steel vs Plastics

2021-04-23Plenum box for Heat Recovery System - Steel vs Plastics

Plenum boxes for HRV systems to connect semi-rigid ducting and air valves. The questions in which type will the best: steel or EPP, with or without seals? Check our article to find out➞

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