Rinnai Boilers and Combi Units in Phoenix

Usually not. On a combi the domestic side and the heating loop share a burner but rely on different components, so the loop can fail from low pressure, trapped air, a thermostat or zone fault or a circulator while showers stay fine. It needs an on-site diagnosis.

We cannot speak for the manufacturer. Boiler and combi warranties commonly reference water quality and maintenance, so the safe assumptions are to keep service records and read your own terms. Regular descaling is a mechanical necessity in the Valley regardless of what the warranty says.

No. Bleuwave is independent and not affiliated with or endorsed by Rinnai Corporation. Our advice is based on your equipment and your house, not on a brand relationship.

That is a sizing question, and a web page cannot answer it. Domestic hot-water demand and hydronic load are calculated from the house, its fixtures and its zones during an on-site evaluation. The large and luxury home page explains why big houses rarely fit a single-appliance answer.

We do not publish that procedure. Descaling involves isolation valves, a pump and chemicals on a gas appliance, and mistakes are expensive. It is part of a professional maintenance visit; the heating maintenance page describes what is included.

If the house has ducts and the air conditioner is aging, a heat pump can take over heating and cooling and a separate water heater can replace the domestic side. If the home depends on radiant floors, the picture is different. The all-electric conversion page walks through both cases.