Aprilaire 4793 Humidifier Maintenance Kit for 550 550A and 558 series

This saved me a lot of money. Was told I needed an entire new humidifier due to leaking. Instead did some maintenance and problem fixed! Easy to install. Great purchase!

Exactly the part I needed to repair leaking tray. Easy to install. Saved at least $100 on HVAC repairs.

would do business with Aprilaire any time because I have learnt to trust them

Great fit and all parts worked. Humidifier ready for another season

Direct replacement part. Would be nice if they had a more flexible hose. Ran the hose it under hot water to help bend it into place.