Plumber Tips: Effects Of Frozen Plumbing Vent Stacks | Bloomington, IL

Plumber Tips: Effects Of Frozen Plumbing Vent Stacks | Bloomington, IL

Plumbing vent pipes are a crucial part of your plumbing system. They work together with drain pipes to ensure you enjoy clean and fresh breathing air in your Bloomington, IL, house. The plumber installs the pipes, also known as vent stacks or plumbing air vents in the attic, roof, and walls. This ensures they provide ventilation for water and waste to move through the drainage system to the septic tank.

Your plumbing vent stacks are also susceptible to having issues that might compel you to look for a professional to fix them ASAP. During winter, the low temperatures can make the vent pipes freeze, leading to several plumbing issues that might cause you a great deal of stress. Read on to learn the effects of frozen air vents.

Why Are the Air Vents Important?

Correctly sized vent pipes efficiently regulate airflow in the plumbing and drainage system for human waste and wastewater to flow smoothly to the sewer and septic tanks. They also remove nasty sewer gasses from your home, preventing numerous health issues.

The plumbing vents also have traps that prevent the sewer gasses from your house. They include P-trap and objectionable traps such as the S-trap. The traps have water that acts as a seal preventing nasty sewer smells from getting into your house.

The vent stacks come in different sizes for different plumbing fixtures in your home. The following table shows the sizes of vent pipes a plumber should get for installation in your house.

Plumbing Fixtures Vent Pipes (Inches in diameter)
Kitchen sink
Laundry sink
Shower 2
Toilet tank 3

Table from

Frozen Plumbing Vent Stacks

Homeowners in Bloomington, IL, experience more plumbing issues during winter due to the low temperatures. The plumbing pipes freeze, causing several problems that need urgent services of a plumber. Vent stacks are not an exception and can freeze up due to extreme coldness.

The water vapor or air in the vent pipes freezes on top of the stacks, closing up the plumbing air vents, thus affecting their ventilation abilities. The closed vent stacks disrupt the pressure that allows water and waste to move through your drainage system, making water traps empty, causing issues that include:

Accumulation of Sewer Gasses

When the plumbing air vents are frozen, it creates a clog that affects their functioning. The vent pipes fail to eliminate awful sewer gasses from your house. The smell accumulates and permeates your environment, making your residence a no-go-zone.

The foul sewer gas, which contains ammonia, carbon monoxide, and sulfide, also causes health issues such as headaches, unconsciousness, dizziness, and drowsiness, depending on the level of exposure. Having a plumber for emergency services is a sure way of restoring the clean and fresh air in your house. The plumbing expert will know there is a problem with the vent pipes because of the escalating nasty smell.

Difficulties in Flushing Your Toilet

Toilets need adequate air pressure or ventilation in the venting system to remove waste. When you experience trouble flushing your toilets or see water rising in the toilet bowl even without flushing, your vent pipes or waste stack is clogged. The ice formation in the vent pipes creates a blockage that makes it impossible for waste to drain smoothly to the municipality sewer lines.

Plumbing problems that affect the toilet, such as frequent toilet clogs due to the frozen plumbing air stacks, are dire and require immediate attention from a qualified plumber. It is past bearing living in a house with awful odor and dirty toilets, sinks, and bathrooms. You will have to stay out as the plumbing service experts work on your plumbing system.

The plumber has the skills and tools to ensure the air vents are operating optimally again by insulating the roof plumbing vents to keep them warm and avert the possibility of ice-build up.


You might experience sewage and wastewater backups in most plumbing fixtures and appliances in your home when the vent stacks freeze. Specks of solid human waste can float in your laundry, kitchen and bathroom sinks, dishwashers, and shower drains, which is disgusting to see.

The shut vent stacks hinder the waste from moving to the drainage system, and every time you continue using water, it has nowhere to go but to come back up from any plumbing drains in the house. As you wait for your plumber to arrive, you should stop using any plumbing fixtures in your home because it might worsen the situation by causing indoor floods of wastewater with specks of poop.

Standing Water

Another effect of frozen plumbing air vents is stagnant water you might notice in your drains. Since the vent stacks close up with frozen vapor, any water you use in your home cannot drain properly to the city sewer lines.

You will have flooded bathroom floors and standing water in sinks, laundry drains, and bathtubs. Calling a plumbing service is not an option after noticing standing water in your sinks and drains.

Solutions to the Frozen Vent

The plumber you get from a reputable plumbing company has the experience and skills to address the issue of frozen vent pipes. The professional uses state-of-the-art equipment to check for ice build-up in the plumbing vent system.

Since the problems of standing water, noxious sewer odor, backups, and difficulties in flushing your toilet are proof of vent pipe issues, the plumber will inspect the vent stacks to identify the part with frozen water vapor. After getting the exact frozen section on the vents installed on the roof, the expert will insulate them to restore your plumbing and drainage system to running smoothly.

It is best to get a plumber to insulate your entire plumbing pipes and vent pipes before winter sets in to prevent ugly plumbing issues arising from frozen pipes or vent stacks.

Need Plumbing Services!

Plumbing vents are as essential as other plumbing fixtures and faucets in your home and should run smoothly at all times. You should call Covenant Plumbing in Bloomington, IL, for a qualified and highly trained professional if you have frozen plumbing air vents.

Our plumbing technicians use their knowledge, skills, and experience to ensure you get the services you need, including proper analysis and diagnosis of plumbing issues for prompt repairs, installations, and maintenance.

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