Pride Plumbing was called out for Rinnai V65e propane gas tankless water heater not producing hot water. Our inspection and tests determined that the unit's heat exchanger had malfunctioned. We provided cost estimates to 1) remove and replace the heat exchanger; and 2) replace the unit with either a new customer-supplied tankless model or new Pride Plumbing supplied Navien tankless models with or without a NAVICIRC recirculation pump (this would include: a) removing and disposing of the old water heater along with its electrical wiring, venting, and gas and water supply lines; b) installing the new tankless unit along with its service valves, PEX and stainless steel water lines to the unit's water connections, copper gas supply line, gas regulator, NAVICIRC recirculating kit (if applicable), drip leg, gas shutoff valve, and condensation and intake lines; c) wiring up the unit; d) ensuring that it was properly vented; and e) lighting and programming the unit).