Servicing a positive input ventilation (PIV) unit is essential to ensure its proper functioning, energy efficiency, and to maintain good indoor air quality. PIV units are designed to bring fresh air into a property, improve ventilation, and reduce humidity levels, particularly in areas like bathrooms and kitchens.

Here are some reasons why you should service a PIV unit:

1. Performance Optimization: Regular servicing ensures that the PIV unit operates at its optimal performance levels. It helps to maintain the airflow rate and ventilation efficiency, ensuring that it delivers the intended benefits.

2. Air Quality: A well-maintained PIV unit ensures that the air entering the property is filtered and free from dust, pollen, and other pollutants, thus improving indoor air quality.

3. Energy Efficiency: Proper maintenance keeps the PIV unit running efficiently, which can lead to energy savings over time. A well-serviced unit consumes less power to deliver the same ventilation benefits.

4. Preventive Maintenance: Regular servicing allows technicians to identify and address potential issues before they become major problems. Preventive maintenance can save you from costly repairs and downtime.

5. Prolonged Lifespan: Like any mechanical system, a PIV unit has a finite lifespan. Regular servicing helps extend the unit's life by reducing wear and tear and addressing minor issues promptly.

6. Warranty Compliance: Some PIV units come with warranties that require regular servicing to remain valid. Skipping maintenance might void the warranty, leaving you responsible for any future repairs or replacements.

7. Health and Comfort: Proper ventilation contributes to a healthier indoor environment by reducing condensation and dampness, which can lead to mold growth and respiratory issues.

It's essential to have a qualified technician perform the servicing to ensure safety and proper maintenance. The frequency of servicing may vary based on the unit's usage and the manufacturer's recommendations. In general, PIV units should be serviced at least once every 5 years, but more frequent servicing may be necessary for heavily used units or those in high-pollution environments.