Firing rate is the rate at which a burner delivers fuel energy to a boiler, furnace, or water heater, typically measured in BTU per hour. It determines heating capacity and efficiency by matching heat output to demand. Modulating systems can adjust firing rate automatically to reduce energy waste and maintain steady comfort.
/ˈfaɪərɪŋ reɪt/
Firing rate is the rate at which a burner delivers fuel energy to a boiler, furnace, or water heater, typically measured in BTU per hour. It determines heating capacity and efficiency by matching heat output to demand. Modulating systems can adjust firing rate automatically to reduce energy waste and maintain steady comfort.
What does firing rate mean in heating systems?
It’s the rate of fuel energy input that determines how much heat a boiler, furnace, or water heater can produce.
Source: The Cooling Company
Proper firing rates balance comfort and efficiency.
In a commercial building, a modulating boiler adjusts firing rate throughout the day to match heating demand and reduce fuel costs.
Have a licensed technician verify firing rate during seasonal tune-ups to keep combustion safe and efficient.
“Have a licensed technician verify firing rate during seasonal tune-ups to keep combustion safe and efficient.”
Modern modulating systems can operate at low firing rates for long periods, improving comfort and reducing cycling.
Can the firing rate be adjusted?
Yes. It can be calibrated by a technician to match equipment specs and demand.
What’s the difference between fixed and modulating firing?
Fixed firing runs at one output, while modulating systems adjust continuously.
Does firing rate affect efficiency?
Yes. Proper firing rate reduces cycling and improves fuel efficiency.
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