Half the value of a junk pile isn't in throwing it away — it's in sorting it. Donation receipts have tax value, scrap metal has cash value, and the landfill should get only what nothing else will take. Here is how that sort works locally.
What donation centers genuinely want

Clean, working, complete: intact furniture, working appliances, usable housewares. Knoxville's donation network — KARM stores, Goodwill, Habitat ReStore for building materials — will decline stained mattresses, broken recliners, and TVs older than the volunteers. Pre-checking condition saves everyone the awkward trip.
Get the receipt. An estate's worth of furniture is a real deduction, and haul crews that route donations should hand the paperwork back to you.
Recycling that actually happens
Metal is the honest recyclable: appliances, grills, patio furniture, and anything ferrous has scrap value that offsets hauling. Electronics deserve a recycler rather than a landfill — and data-bearing devices deserve a wiped drive before they leave the house.
Cardboard, clean wood, and concrete each have local outlets too; what makes recycling real is sorting before the truck, not intentions after it.
The special-handling shortlist
Paint, chemicals, batteries, fluorescent tubes, propane tanks, and refrigerant appliances all have rules. Fridges and AC units need certified refrigerant recovery before scrapping — a normal part of appliance hauling, worth confirming rather than assuming.
How a good haul sorts it
The crew separates as they load: donate pile, scrap pile, recycle pile, landfill last. You get receipts where receipts exist, and the dump fee applies only to the fraction that earned it. Ask any hauler how they route donations — the answer tells you who you hired.
The sort is the savings
Ten minutes of grouping — donate, metal, e-waste, trash — converts directly into receipts, scrap offsets, and a smaller disposal fee. The landfill should be the last stop, not the first guess.
Ask your hauler where things go; the ones with good answers are the ones actually doing the routing.