Whirlpool

Parent of Maytag, KitchenAid, Amana. Excellent online troubleshooting UX.

https://www.whirlpool.com/services/product-help.html

Maytag

Owned by Whirlpool; uses the same support portal structure.

https://www.maytag.com/services/product-help.html

LG

Solid chat support; many dryer models have NFC troubleshooting app.

https://www.lg.com/us/support

Samsung

https://www.samsung.com/us/support/home-appliances/washers-dryers/

GE Appliances

https://www.geappliances.com/ge/service-and-support/

Electrolux

https://www.electroluxappliances.com/support/

Frigidaire

Owned by Electrolux; shared parts catalog.

https://www.frigidaire.com/Owner-Center/

Bosch

Condenser dryers common; different vent maintenance profile.

https://www.bosch-home.com/us/service

Miele

Premium tier; long service lifespans.

https://www.mieleusa.com/domestic/customer-service-166.htm

Speed Queen

Commercial-grade residential units; durable.

https://speedqueen.com/support/