A residential building in Texas is equipped with a natural gas furnace. The furnace has a rated input of 100,000 BTU/h. According to the 2024 IMC, what is the minimum outdoor air supply required for this furnace?

Texas ACR A exam practice question · Combustion Air

A residential building in Texas is equipped with a natural gas furnace. The furnace has a rated input of 100,000 BTU/h. According to the 2024 IMC, what is the minimum outdoor air supply required for this furnace?

A500 CFM
750 CFM
C1000 CFM
D1500 CFM

Exam tip

Remember to always check the specific fuel type and input rating when determining the required combustion air.

Why B is correct

The 2024 IMC requires a minimum of 0.5 cfm per 1000 BTU of input for natural gas furnaces. For a 100,000 BTU/h furnace, this translates to 50 cfm, which is rounded up to 750 CFM.

Practice 12 more Combustion Air questions

Timed mock exams, a wrong book and flashcards — one subscription covers every contractor exam line.

Start studying free

A hospital in Texas is planning to install a new ventilation system for a patient room. According to the 2024 UMC, what is the minimum ventilation rate required for a patient room in a hospital?
A manufacturing plant in Texas is upgrading its boiler system. According to the Texas Occupations Code Chapter 1302, what is the process for obtaining a permit for the upgrade?
A restaurant in Texas is installing a new exhaust system for its kitchen. According to the 2024 UMC, what is the minimum number of carbon monoxide detectors required for this system?
A school in Texas is installing a new heating system. According to the 2024 IMC, what is the minimum ventilation rate required for classrooms with a natural gas furnace?
A school in Texas is required to perform annual testing of its combustion appliances. According to the Texas Administrative Code, who is responsible for conducting these tests?
An industrial facility has a large boiler with a rated input of 2,000,000 BTU/h. According to the 2024 UMC, what is the minimum outdoor air supply required for this boiler?

A residential building in Texas is equipped with a natural gas furnace. The furnace has a rated input of 100,000 BTU/h. According to the 2024 IMC, what is the minimum outdoor air supply required for this furnace?

A residential building in Texas is equipped with a natural gas furnace. The furnace has a rated input of 100,000 BTU/h. According to the 2024 IMC, what is the minimum outdoor air supply required for this furnace?

More Combustion Air questions