Mobile Home Furnace Vent Cap

The top of a chimney after installation does not always have a chimney cap. You will likely need to install a cap for your gas furnace chimney, but not for the reasons you might think.

What is a furnace exhaust pipe?

The furnace exhaust flue, also called a furnace exhaust stack, is a metal tube that vents the noxious combustion gases from the heat exchanger to the outside. Inside the stack resides a damper that regulates the pressure between the air from the furnace and the outside air.

Where is the furnace flue?

The furnace flue will usually be located on the top or the rear of the furnace. It will directly connect to a chimney or to a metal flue pipe that extends vertically to the roof. Most of the remaining pipe will be hidden as it passes through your home, though it may be visible in the attic.

How do I vent my furnace to the roof?

How to Vent a Furnace in a Roof

1. Locate the spot to install the vent pipe, using a tape measure to determine distance from a wall or other identifiable spot.
2. Run the vent pipe up through the roof and install a metal or PVC flashing collar over it. ...
3. Put a cover on the vent.

What happens if furnace exhaust is blocked?

Furnaces can shut off entirely because these vents are blocked with snow or ice – this is simply a safety mechanism. Without the proper ventilation, carbon monoxide can build up inside your home. The blockage of your vents will also decrease your energy efficiency.

How do you tell if your furnace is venting properly?

How Do I Know If My Furnace Isn't Venting Properly? Gas furnace fumes are moist, so if you notice “sweat” on your windows, this is a sign that your furnace isn't venting correctly. When your furnace comes on in the morning, if it is venting into your house rather than outdoors, moisture will condense on the cold glass.

How do you seal a furnace vent pipe?

How to Seal My Furnace Vent Pipe

1. Clean the area. Remove any dirt or debris from the area around the vent.
2. Apply sealant. You can choose either caulking or a foam sealant to seal your vent pipe. ...
3. Clean it up. If using caulking, you may wish to smooth it out after it has been applied.

Does furnace exhaust have carbon monoxide?

But when fossil fuels are burned in a gas furnace, exhaust gases are produced. One of these gases is carbon monoxide. Carbon monoxide (CO) is a colorless, practically odorless, and tasteless gas or liquid. Exhaust gases must be vented away from indoor spaces so the occupants don't breathe them in.

Where is my furnace exhaust vent?

They should be near where your furnace is on the inside. Normally, they are a set of curved pipes (PVC, CPVC, or ABS) near the foundation, although sometimes they are on or near the roof.

How do I know if my furnace vent is clogged?

How to tell if your exhaust vent is blocked

1. Furnace doesn't heat the air. By far, the most common symptom of a blocked exhaust vent is a furnace that doesn't heat up.
2. Furnace heats up for a little while, then shuts off. ...
3. Furnace cover panel gets hot. ...
4. Bad smells when your furnace is heating.

Is flue same as vent?

The flue pipe is a duct pipe that vents, or exhausts, gases from inside the home to the outside.

How often should furnace flue be cleaned?

A flue that is unable to properly vent can become filled with dangerous, and even deadly vapors that will eventually leak right back into your home. Therefore, it is essential that you have your flue inspected and properly cleaned at least once a year.

What is the vent directly above my furnace for?

High-efficiency furnaces use sidewall vents for “breathing” in outside air for fuel combustion, and “exhaling” cooled exhaust gases nearly depleted of heat.

Do all roof vents need a cap?

Most roof vent pipes are a part of a plumbing system and are connected to water systems that are wet all the time. In this regard, it's not necessary to install a roof vent cap to prevent rain from getting in the vent pipe.

How high should a furnace vent be above the roof?

Gas vents shall extend at least two feet above the highest construction, such as a roof ridge, parapet wall, or penthouse, within ten feet of the vent outlet whether the construction is on the same building as the chimney or on another building.

How do you clear a clogged furnace exhaust?

Scrub the inside free of any dust and debris; then use the handheld vacuum to get out as much as you can. Wipe it clear with a rag or soft cloth and then replace the cap. Cut away any branches or remove any object that might be obstructing the pipe and creating debris. The vent should always be clear.

How do I know if my flue pipe is clogged?

How to inspect your flue pipe

1. Remove the flue cap to check for blockages such as debris or birds' nests.
2. Replace and secure the cap tightly to the end of the flue pipe.
3. Look for signs of blockages by examining the pipe itself – water streaks or rust on the flue pipe may indicate a blockage, causing moisture to back up.

Can blocking a vent cause a fire?

Fire Hazard Perhaps the most obvious (and most dangerous) result of a blocked vent is that it will cause a fire.

How do I know if my furnace is Backdrafting?

The smoke should be wicked up and away. If the smoke isn't getting out, then chances are exhaust fumes aren't either. Another warning sign to watch for is hot air around the entrance to the exhaust vent.

How do you tell if your furnace is giving off carbon monoxide?

Signs of Carbon Monoxide Leaks

1. Soot: You may notice soot-like stains on your furnace.
2. Smell: While carbon monoxide doesn't emit odor, it may get accompanied by other exhaust gases that produce an odor.
3. A yellow burner flame: The pilot flame may produce an unusual yellow flame instead of the normal blue one.