To check the gas supply to your Rinnai water heater, first, ensure the gas valve is in the ‘ON’ position. Next, check the gas pressure using a manometer. If the pressure is too low, it may not be sufficient to heat the water. If you’re unsure about any of these steps, it’s best to consult with a professional.
At 5 Star Best Plumbing, our specialists are always ready to assist with any water heater issues, including checking the gas supply. We also offer a comprehensive water heater replacement guide for those considering a new unit.