Aprilaire: https://www.aprilaire.com/owner-center/warranty-registration Call: (800) 334-6011 Hours: M-F 7AM-5PM CST
Bosch Home Appliances: https://www.bosch-home.com/us/owner-support/cleaners-accessories/warranty-information Call: (800) 944-2904 Text: "SUPPORT" to 21432
Electrolux: https://www.electrolux.com/en/warranty-info Call: (877) 435-3287 Hours: M-F 8:30AM-8PM EST
Frigidaire: https://support.frigidaire.com/Owner-Center/ Call: (800) 374-4432 Hours: M-F 8:30AM-8PM EST
Honeywell: https://www.resideo.com/us/en/warranty-registration/ Call: (800) 664-2751
LG Appliances: https://www.lg.com/us/support/warranty-information Call: (800) 243-0000 Hours: M-S 8AM-9PM EST
SAMSUNG Appliances: https://www.samsung.com/us/home-appliances/warranty/ Call: (800) 726-7864
Whirlpool: https://www.whirlpool.com/owners.html Call: (866) 698-2538 Hours: M-F 8AM-6PM EST