A heater located in a closet must have two 3' pipes at _____________________ inches from top and bottom of closet, with a vent at least 1 square foot.

🎲 Try a Random Question | Total Questions in Quiz: 115 | 🧠 Study this quiz with Flashcards

This question is part of a full practice quiz:

TREC Home Inspector National Exam: HVAC — practice the complete quiz, review flashcards, or try a random question.

🧠 Flashcards (fast review) 🧪 Practice Quiz ⚔️ Challenge a Friend 🥊 📊 View Stats

1. A heater located in a closet must have two 3' pipes at _____________________ inches from top and bottom of closet, with a vent at least 1 square foot.

Natural draft refers to the burners of a conventional low-efficiency gas furnace. This type of burner is also called an atmospheric burner. With natural draft, we need to keep the chimney hot enough to get those combustion gases out of the chimney. Natural draft burners have no draft fan. - ALSO Gravity Warm-Air Heating Systems; The furnace heats the air, and the air gets lighter and rises out of the heating system. Cool air enters the heating system and pushes or displaces the warm, rising air. The warm air rises up through warm-air ducts or pipes (often called stacks) that are inside the walls. The warm air rises up through the building. The warm air enters a room through the supply registers on the wall or floor. The cool air falls out of the room and may return through a return grille, and travels back through return ducts to the heating system. Some houses with old gravity heating systems may not have a lot of ducts and pipes but may have large openings covered with iron grates or grilles in the floors that allow the cool air to fall down through the building. The cool air is allowed to simply fall back to the furnace -- hence, the name 'gravity warm-air heating system.' - - The efficiency of the air circulation in a house with a gravity warm-air heating system depends on the temperature difference between the warm air rising and the cool air falling. The greater the difference, the greater the speed that the air will circulate. Also, air circulation in a gravity warm-air heating system is greatly affected by air filtering. An air filter can resist and almost block the air flow in a gravity system. You may find that an integral fan has been installed to overcome resistance to air flow. - - - - - An induced draft uses a blower fan to pull air into the burner through the combustion chamber and exchanger. The fan is located on the exhaust-side of the exchanger. It also blows the flue gases out through the vent connector pipe. When the induced fan is operating, there is a negative pressure inside the heat exchanger. Induced-draft fans are also called exhaust blowers or power vents. Induced draft has a fan after the exchanger and before the vent pipe. Induced-draft fans are common on mid-efficiency and high-efficiency furnaces. - - A forced draft describes a furnace that has a fan that blows air into the combustion chamber through the heat exchanger and out through the venting system. All oil burners and some gas furnaces use forced draft. Forced draft has the fan before the burner. - ALSO Forced Warm-Air Heating Systems
lower than 60%.
12'
habitable space

A heater located in a closet must have two 3' pipes at _____________________ inches from top and bottom of closet, with a vent at least 1 square foot.

❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.

A heater located in a closet must have two 3' pipes at _____________________ inches from top and bottom of closet, with a vent at least 1 square foot.

❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know? Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com