Aprilaire 4839 Maintenance Kit for 600

Keep your humidifier running smoothly with this handy Tune Up Kit. It’s specifically designed to work with whole house large bypass models 600, 600A and 600M for 100% compatibility. Simply follow the included instructions to give your machine a much-needed tune up to help keep it running smoothly.

Order Processing: After your payment is authorized and verified, we will start processing your order and this process can take from 1 to 2 business days, so please be patient with us. If we are unable to process your order due to inaccurate or incomplete payment or incorrect address information, your order processing may be delayed.

Carrier: UPS/FedEx/USPS. Delivery Timescale: More than 90% of orders arrive in 10 business days after despatch.

FREE RETURNS on all orders!
The following conditions must be met:

1. Items must be returned within 30 days after the purchase date.
2. Items must be unworn, undamaged and in original packaging.