Single stage furnace 811SA36070E17 replacement in San Jose, CA

This home had a single stage furnace, model 811SA36070E17, installed as a straightforward and cost-effective heating solution. A single stage furnace is a dependable choice for households that want simple, reliable heat without the extra cost and complexity of more advanced systems.

Understanding how this kind of furnace works helps explain why it suits so many homes. A single stage furnace is a type of gas furnace that has only one heating output setting. It runs at full capacity whenever it is on, delivering the maximum heat it is capable of producing each time the thermostat calls for it.

How a single stage furnace works

• One output setting: the furnace operates at full capacity each time it runs, providing its maximum heat output rather than modulating.
• Thermostat call for heat: when the thermostat signals the furnace to turn on, the gas valve opens and the burner ignites.
• Heat exchange: the ignited burner heats the heat exchanger, which warms the air passing over it.
• Air circulation: the blower fan then circulates the heated air throughout the home.
• Simple and affordable: single stage furnaces are generally less expensive than two-stage or modulating units and are easier to install and maintain, though they may not be as energy efficient.

For homeowners looking for a simple, budget-friendly way to stay warm, a single stage furnace is a practical option that is easy to live with and easy to service. The Nur HVAC team handles the full installation so the unit is sized and set up correctly and ready to heat the home.