Unlike routine service calls, emergency heater failures cost 50 to 100 percent more

https://precision-emergency-plumber1195.quantlynix.com/posts/dispatch-fees-and-after-hours-surcharges-drive-plumbing-visit-costs-above-standard-rates

Emergency water heater failures trigger immediate premium pricing because they demand after-hours response, specialized tank or tankless diagnostics, and urgent capacity restoration