Does Lowes have a washer repair tech that will service a machine at home?

They do but they do not work for lowes they r subcontractors.... so u r better off cutting out the middle man(lowes) and finding a repair man on your own.... less $$

I would use a private contractor or look for one who is familiar with your brand.

Yes they use contractors.

I'm not sure , you would have to call them.

I would call to find out. I know they service pros in other depts that install but idk about repair