Should you service or replace your ventilation unit?

Decide whether to service or replace a ventilation unit based on its condition and the operation of the whole system. A new unit alone will not fix poorly functioning ducts, missing design information, or problems related to changes in how rooms are used.

Assess the existing unit

Gather the model, age, operating instructions, and service history. Describe unusual noise, error messages, or other changes. Ask a professional to distinguish routine servicing, repairs, and issues needing further investigation.

Ask about spare parts and repair costs. Age may affect the decision, but the case for replacement should also explain the unit’s current condition and suitability.

Compare the complete replacement installation

Choosing a new unit involves checking compatibility with the ducts, available space, controls, and electrical installation. Ask the quote to include necessary modifications, removal of the old equipment, commissioning, and verification of system performance.

Ask about noise, service access, and filter replacement in practice. A lower purchase price may be less attractive if routine maintenance proves difficult.

Agree on measurement and user instruction

Find out whether airflow measurement and any necessary balancing are included. Request the results and instruction on operating modes and user-adjustable settings. Motiva’s Finnish ventilation information (opens in a new tab) explains the importance of maintenance and correct operation.

In a Finnish housing company, plan a replacement with the property manager as part of the building’s system. Itemizing ventilation work helps compare repair and replacement against the same outcome: ventilation that works, is documented, and is practical to use.