{"id":28644,"date":"2026-02-05T10:39:17","date_gmt":"2026-02-05T08:39:17","guid":{"rendered":"https:\/\/www.vallox.com\/?post_type=reference&p=28644"},"modified":"2026-02-05T10:52:27","modified_gmt":"2026-02-05T08:52:27","slug":"ventilation-in-factory-with-pureo-units","status":"publish","type":"reference","link":"https:\/\/www.vallox.com\/en\/reference\/ventilation-in-factory-with-pureo-units\/","title":{"rendered":"A prototype of Vallox Pureo SR unit handles ventilation in Vallox\u2019s factory"},"content":{"rendered":"\n

To reduce the energy consumption of its factory and make managing ventilation easier, Vallox decided to renovate its ventilation system.<\/p>\n\n\n\n

Vallox\u2019s factory building is large and requires multiple ventilation units for effective results. The A2 factory hall and the adjacent offices were previously served by a single, shared air handling unit. In the ventilation renovation, the old unit was replaced with two modern units: Vallox Pureo TX 900<\/strong><\/a> ventilates the offices and Vallox Pureo SR 3000<\/strong><\/a> the A2 factory hall.<\/p>\n\n\n

\n \"Vallox\n
\n
\n Responsible for the management of Vallox\u2019s properties, production manager Mikko M\u00e4ki was extremely happy with the result of the ventilation renovation with new Vallox Pureo units.\n <\/div>\n \n <\/div>\n <\/div>\n\n\n\n
<\/div>\n\n\n\n

Prioritising energy savings<\/h2>\n\n\n\n

The decision to renovate the ventilation system was accelerated by Vallox\u2019s efforts to save energy. The old air handling unit consumed 80,570 kWh of electricity and 120,750 kWh of thermal energy annually.<\/p>\n\n\n\n

The energy consumption of the new Vallox Pureo units is on a next level. Their calculated electricity savings are over 51,000 kWh\/a and thermal energy savings over 91,000 kWh\/a.<\/p>\n\n\n\n

The annual efficiency of the new units\u2019 heat recovery is over 80%, while the old unit\u2019s annual efficiency was below 50%.<\/p>\n\n\n

\n \"Calculated\n
\n
\n The calculated energy consumption of the old and new air handling units differed significantly: the two new Vallox Pureo units consume only around 36.5% and less than 25% of the old unit\u2019s electricity and thermal energy consumption, respectively. \n <\/div>\n \n <\/div>\n <\/div>\n\n\n\n
<\/div>\n\n\n\n

Ventilation was also more difficult to control with the old unit.<\/p>\n\n\n\n

\u201cThe factory hall and the offices have very different ventilation needs, so managing the ventilation of two spaces with one unit was extremely difficult,\u201d<\/em> says Mikko M\u00e4ki<\/strong>, Production Manager responsible for managing Vallox\u2019s properties.<\/p>\n\n\n\n

Thus, the indoor conditions were improved when the old unit was replaced with two units, one of which ventilates the factory wing of the building. The new solution provides on-demand ventilation in both spaces and is easy to control. It also improved the cooling of the offices.<\/p>\n\n\n

\n \"Kahdella\n
\n
\n With two air handling units, the ventilation of the factory hall and the offices can be controlled separately on demand.\n <\/div>\n \n <\/div>\n <\/div>\n\n\n\n
<\/div>\n\n\n\n

Cost-effectiveness backed up by calculations<\/h2>\n\n\n\n

The old unit had been given a through service only a few years earlier. Replacing a completely functional unit raised doubts. Would the investment be worthwhile?<\/p>\n\n\n\n

\u201cTo be honest, I was quite sceptical about the investment, since the old unit was perfectly functional and all the machinery had only recently been replaced,\u201d<\/em> M\u00e4ki confesses.<\/p>\n\n\n\n

When considering a ventilation renovation, it is important to assess the investment\u2019s profitability by conducting or have a qualified expert conduct a profitability calculation. <\/p>\n\n\n\n

For Vallox, the profitability of the investment was calculated by \u00c4yr\u00e4v\u00e4inen Tampere Oy<\/strong><\/a>, boasting a proud record in HPAC, electricity and automation design and consulting:<\/p>\n\n\n\n

\u201cAn accurate profitability calculation is an important decision-making tool for the client. The person doing the calculation must have excellent know-how in energy consumption calculations, a good understanding of the entire system and the factors affecting it as well as a good idea of the costs of the project implementation. If this is the case, the resulting calculation will be reasonably accurate and useful in decision-making,<\/em>\u201d<\/em> says Toni Salonen<\/strong>, Unit Manager (HPAC, Automation and Energy) at \u00c4yr\u00e4v\u00e4inen Tampere Oy.<\/p>\n\n\n\n

Salonen reminds that the report should include a reliability percentage for the calculation and a pay-off period calculation for the money invested.<\/p>\n\n\n\n

After receiving the accurate profitability calculations, Vallox was sure of its decision: the envisaged investment would be profitable. The investment was assessed over a period of 25 years. Both the units and the demolition and installation costs as well as the calculated savings in electricity and thermal energy were taken into account in the profitability calculations. In the light of the estimated annual increase of energy prices, the pay-off period of the total investment was determined to be around four years.<\/p>\n\n\n\n

<\/div>\n\n\n\n

From calculations to planning<\/h2>\n\n\n\n

It was only natural to order the site\u2019s ventilation plan from \u00c4yr\u00e4v\u00e4inen Tampere Oy, with whom Vallox has a long history.<\/p>\n\n\n\n

\u201cDesigning the ventilation system was relatively easy for us since we were already familiar with the building \u2013 having designed the original ventilation system. Modifying the system was effortless. We have over 25 years of experience of working on this building and we knew its technical aspects. Thanks to this experience and knowledge, we were in a good position to plan the renovation,\u201d<\/em> says Salonen from \u00c4yr\u00e4v\u00e4inen.<\/p>\n\n\n\n

Vallox has been very happy with the ventilation renovation.<\/p>\n\n\n\n

\u201cIn addition to the relatively short pay-off period for an investment in energy efficient, we gained improved ventilation performance,\u201d<\/em> says M\u00e4ki.<\/p>\n\n\n\n

<\/div>\n\n\n\n

Investment and product development go hand in hand<\/h2>\n\n\n\n

When the idea to renovate the ventilation system of the A2 hall and the adjacent offices was initially brought up, Vallox was about to introduce new Vallox Pureo models into the market. Vallox saw this as an opportunity to test the new products before they hit the market.<\/p>\n\n\n\n

The Vallox Pureo SR 3000<\/a> air handling unit was at the prototype stage at the time, and the product development team was given front-row seats to follow the installation and setup of the new model.<\/p>\n\n\n\n

\u201cOur product development team received valuable feedback about unit installation directly from the renovation site,\u201d<\/em> says M\u00e4ki.<\/p>\n\n\n\n

During the installation of the unit, a few concerns about the unit\u2019s installation and movability were raised, and these could be fixed before the start of sales and production.<\/p>\n\n\n

\n \"Vallox\n
\n
\n After-sales service manager Jukka Jalonen, who provides technical support at Vallox, and project manager Joni Suvitie from the product development team examine the settings of the Vallox Pureo TX 900 unit, responsible for the ventilation of the offices. \n <\/div>\n \n <\/div>\n <\/div>\n\n\n\n
<\/div>\n\n\n\n

Savings and improved energy efficiency through renovation<\/h2>\n\n\n\n

The ventilation renovation project was finished in autumn 2025 and the investment has already reduced the factory hall\u2019s energy bills.<\/p>\n\n\n\n

For Vallox, environment is part of the company\u2019s operating policy<\/a>, and it is constantly striving to reduce the environmental effects of its operations. For example, Vallox has already switched to motion-detecting and time-scheduled LED lights at this factory. The efficient heat recovery function of modern ventilation units makes improving the energy efficiency of its properties even easier. Thus, this financial investment was also an investment in the environment.<\/p>\n\n\n\n

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