
Customers need to make sure sidewall vents and the roof top vents are clear of snow and ice. Customers should also be aware of the dangers and risks of carbon monoxide (CO). The risk of illness or death from carbon monoxide increases in the winter.
How do I keep snow off my roof vents?
Ridge vents with external baffles are not only better at keeping clear of snow (drawing right) but they are also more efficient at exhausting air from the roof cavity.
Do ridge vents get snowbound in very heavy snow?
While all ridge vents can become snowbound in very heavy snows, certain types of ridge vent are much better at keeping clear than others. Unfortunately, it sounds like you installed one that isn’t good at staying clear.
Can a ridge vent cause ice dams?
Paul Fisette, director of building materials technology and management at the University of Massachusetts in Amherst, Mass., replies: It was astute of you to realize that a ridge vent clogged with snow can contribute to the formation of ice dams.
What are baffles on a ridge vent?
Ridge vents with external baffles are not only better at keeping clear of snow (drawing right) but they are also more efficient at exhausting air from the roof cavity. Like any ridge-venting system, baffled vents should be used in combination with continuous soffit vents.

Should all vents be open in winter?
Air vents should be open to prevent damage Increased air pressure can create cracks and holes in the ductwork. It can also cause your furnace's heat exchanger to crack. Leave all air vents open to prevent extensive damage to your home's heating system this winter.
What do you do with vents in the winter?
If you have a top/bottom return vent setup, close the top vents in the winter months. Closing the top vents will make your system draw in air from the bottom vents that are at the low point in the room where cold air settles.
How do I remove ice from my furnace vent?
If the temperature outside remains below freezing for a few days in a row, it's time to inspect the furnace pipe vent on the outside of your house. It's usually a white plastic pipe that comes out of the side of a house. If you find a thin layer of frost on the pipe, you can scrape it off with a plastic putty knife.
What are the vents on the side of my house for?
These vents allow outside air to circulate under the floor in summer to prevent the moisture buildup that encourages mildew and rot. In winter, when the air is drier, the vents are closed to reduce the chance that the pipes in the crawl space might freeze.
Should all air vents be open?
Closing vents will also increase your monthly utility bill as your HVAC struggles to keep up. If you want your HVAC at its most efficient its best to leave all vents open and to allow the proper flow of treated air.
When should you open and close air vents?
It's important to remember that hot air rises and cold air falls. In the winter you want the cold air to be drawn through the return registers leaving the hot air behind. By opening the lower registers and closing the top ones you keep hot air in and draw the cold air out.
Can snow block a vent pipe?
Clogged Vent Pipes In the winter in snowy climates, a buildup of snow and ice can block the vent pipe and keep it from working properly. This can happen when you get a large amount of snow or if your roof is flat or has a low slope, making it difficult for snow to melt and drain off the roof.
What happens if furnace exhaust is blocked by snow?
If the furnace intake pipe becomes blocked with snow, the heating system can stall because it cannot pull the required oxygen to properly operate. Once the intake pipe becomes blocked, the only way to get the furnace working again is to clear the snow.
How do I know if my furnace vent is clogged?
How to tell if your exhaust vent is blockedFurnace doesn't heat the air. By far, the most common symptom of a blocked exhaust vent is a furnace that doesn't heat up. ... Furnace heats up for a little while, then shuts off. ... Furnace cover panel gets hot. ... Bad smells when your furnace is heating.
What is the White vent on side of house?
The plumbing vent, also known as a vent stack, helps regulate the air pressure in your plumbing system. Just as drain pipes remove water and waste from your home, the plumbing vent pipe – also known as a plumbing air vent – removes gas and odors.
Should basement vents be open in winter?
External basement vents should be closed to shut off the direct influence of outside temperatures. Supply and return vents should remain open. Closing them creates pressure imbalances in the home and HVAC system, resulting in unwanted air movement and making the HVAC system to work harder to heat the house.
Should I close crawl space vents in winter?
When temperatures drop below the freezing point, water pipes in the crawl space are bound to freeze if the vents remain open. It's a good practice to close off the vents in winter. Doing so prevents the dry, cold winter air from freezing the pipes inside the crawl space.
Should basement vents be open or closed in the winter?
Supply and return vents should remain open. Closing them creates pressure imbalances in the home and HVAC system, resulting in unwanted air movement and making the HVAC system to work harder to heat the house.
Should I block my gable vents in the winter?
You should absolutely leave your roof vents open during the winter – do not cover them! During the winter, roof ventilation works to keep temperatures even. Closing your vents makes the attic space too warm and dry – dangerous conditions for mold as well as pests.
Should you close doors and vents in unused rooms?
People commonly suggest closing doors in unused rooms to make a room warmer, but this can harm your HVAC unit. Optimal airflow circulates throughout the entire home evenly, and closed doors act as a barrier. When you close off an entrance, much like blocking a vent, your system cannot do its job properly.
Does closing air vents save money?
So remember to keep your air vents open. Closing your vents will not save you money. Instead it will cost you more, put added pressure in your duct system and make you feel less comfortable in your home.
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How To Keep Furnace Vents Clear of Snow
When it snows, it’s not just your driveway and sidewalk that need attention. You also need to make sure your furnace vent is free of snow and ice. If the vent is blocked, it can cause damage to your furnace and pose a serious safety hazard.
Clearing Snow
Inspect your furnace vent after a heavy snowfall. Clear away any built-up snow by hand. You shouldn’t use a tool such as a shovel because it might damage the vent.
Clearing Ice
If ice has built up on the vent, scrape it off using a plastic putty knife. You should look inside the vent with a flashlight to make sure ice hasn’t built up within it as well. Some vents have a stainless steel screen. If this is the case with yours, inspect it to make sure moisture hasn’t frozen over it.
Build an A-Frame
To prevent snow from being a problem, you can build an A-Frame over the furnace vent. This will cause snow to be pushed away from the vent instead of mounding over it.
A Snow-covered Furnace Vent Is Dangerous
Proper airflow is essential to keeping your furnace working efficiently and effectively. This is why it’s so important to change your air filter every 90 days and have your ducts inspected and cleaned regularly as well. When gaseous air can’t escape the home, and new air can’t come in, your furnace shuts down.
How to Keep Your Vents Clear of Snow and Ice
It’s always a good idea to be prepared in case of an emergency, and when your furnace goes out because of snow- or ice-covered furnace exhaust pipes, that counts as an emergency. You could be risking your life by staying inside a house that is filling up with poisonous gas.
Call Thiele to Stay Warm and Safe This Winter
Whenever your furnace goes out, even if it’s because of snow-covered furnace exhaust vents, it’s time to call Thiele. Time is running out to schedule your fall furnace tune-up. Our technicians will clean and service your furnace as well as inspect the vents for any blockages or potential hazards.
Unbaffled vs. baffled ridge vent
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How to deal with snow?
When dealing with a heavily accumulating snow, you will want to periodically go outside with a shovel and push the snow away. If you do this at times during the storm, you won’t have to move a bunch of snow at once.
What to do if snow is accumulating on generator?
The moment you notice snow accumulating against your generator, it is important to remove it or have someone remove it for you. That way you can ensure the intake and any exhaust vents remain free of snow.
Why attach a burlap sack to an air intake?
Something some individuals do is loosely attach a burlap sack to the air intake to prevent snow from accumulating around the intake. However, the sack has to stay away from heated parts because the sack could ignite. The sack also shouldn’t touch moving parts. A snow hood can also help keep snow from accumulating around the generator.
Is Minnesota known for snow?
Posted August 5, 2015 by John Anderson. Minnesota is known for its harsh winters and snow storms that can drop a lot of snow in a short period of time. In fact, the snows in the Twin Cities can be so heavy that individuals have to hire companies to come and shovel snow off of their roofs to ensure the roofs don’t collapse.
Can you use a snow hood on a generator?
A snow hood can also help keep snow from accumulating around the generator. This is an option that you can discuss with your generator company when considering supplies. Although costlier, it can be a much less risky snow preventative than using a burlap sack.
