A repair is current, but replacing the water heater is generally a capital building cost. A service call or replaceable component can be deducted. A new whole water heater is ordinarily treated as a structural component.
The expense-specific result is below. The shared BAR test, de minimis safe-harbor rule, and source guide live on the deductions hub so they are not repeated on every expense page.
A worked classification for a water heater
A $310 thermostat repair is deductible on line 14. A $3,400 installed replacement not covered by a safe harbor is placed on a 27.5-year schedule.
Records that support this treatment
Keep diagnosis, model, capacity, installation and permit costs, warranty reimbursement, in-service date, and safe-harbor documentation.
Keep the invoice, the decision, and the Schedule E placement together. The broader rental property deductions guide and the Schedule E walkthrough cover the full return.
This is general information for organizing rental records, not tax advice. Elections, entity structure, mixed use, and the exact unit of property can change the answer. Bring the invoice and the underlying facts to a CPA before filing.