How do I test my plumbing vents? You can do a simple DIY test by putting your hand over the roof vent pipe while someone flushes a toilet. You should feel suction on your hand when the toilet is flushed if the vent is clear. No suction indicates an obstruction in the vent.
Step-by-Step: How We Perform a Smoke Test
Our technician will set up the smoke machine at a sewer vent or cleanout, usually in your basement or on the roof. We start the smoke machine, pushing smoke into your plumbing system so it can flow through the pipes.
Signs of an air duct clog include: One room in your house is hotter than all the others. Dirty air coming from vents. Unusual spikes in electric bills.
If the job is too dangerous, hire a pro to take care of it. If you decide to hire a licensed plumber near you to handle the fix, you can expect to pay between $150 and $200 for this service, although it could be more depending on the severity of the problem.
Signs of a clogged or blocked vent include gurgling sounds from drains and toilets, slow-draining fixtures, foul sewer odours around sinks and drains, decreased water pressure, and bubbles coming up through the toilet bowl.
You'll likely pay between $300 and $450 to unclog your toilet with Roto-Rooter. However, the price could change depending on if the clog has caused a lot of damage, which your plumbing pro will want to inspect during your service appointment. Keep in mind that you won't get a quote from Roto-Rooter over the phone.
Total Square Footage of Vents
The cost of cleaning ductwork is $0.15 to $0.30 per square foot. So, to clean vents in a typical 1,500-square-foot house, expect to pay between $180 and $360.
If your plumbing vent is clogged, the vacuum inside the pipes can cause water to get trapped inside of them instead of draining out through your sewage line. Since the water has nowhere else to go, it will eventually start to back up inside your sinks and drains.
A clog or blockage in a plumbing vent can happen in a few ways. It's not an uncommon issue, but you should take care of it as quickly as possible. Some of the most common ways a plumbing vent gets a blockage are: Birds' nests: The vent pipe sticking out of your roof is a small cozy space for birds to nest.
But what does a sewer smoke test cost? The answer varies depending on your location and the complexity of your plumbing system. Generally, you can expect to pay between $150 and $500 for a sewer smoke test.
An easy indication that your air ducts are dirty or clogged is when the system turns on, you may see a cloud of dust coming out the air vents. You can double-check this by turning off the HVAC system and waiting a few minutes after it has shut down. Turn it back on and see if dust clouds come out the vents.
Air Admittance Valves “” also called cheater valves, mechanical vents, and even durgo valves “” are mechanical devices that provide you with a one-way venting system. They allow air to enter your drain as the water disappears. Venting is an essential requirement for every plumbing system.
Salt and Baking Soda
Salt is a cost-effective alternative that works well for minor clogs. Mixing half a cup of table salt with baking soda and pouring it down the drain before adding boiling water can help break down grease and debris.
If the Roto-Rooter machine can't get through the pipe, your service technician can request a video camera inspection of the sewer pipeline to ascertain where the blockage is and its cause. A trained eye will then be able to recommend repair options to the homeowner.
Hydro jetting costs $475 on average but range from $350 to $600. A plumber can give you a quote and get rid of your sewer clog. Having to keep your plumber on speed dial is no fun for any homeowner. If chronic sewer clogs are giving you issues, it might be time to call in the big guns.
The cost to reroute a plumbing vent ranges from $500 to $5,000, with a national average of $1,500. Budget for more if you expect drywall, roof, or floor repairs. The piping of a household is a modern miracle, as it utilizes the air flowing throughout the house at any given time to keep your lines moving.
Whether you purchased a new appliance that needs a new vent or are looking to replace existing plumbing vents, our expert plumbers can help. With nearly 300 locations across the US and Canada, Mr. Rooter is your local source for dependable plumbing repairs and vent installation.
Using thermal imaging cameras is an effective way to look at large areas quickly, and causes minimum disruption and no damage to your property. Infrared inspection cameras can not only detect hidden water leaks and their origin, but they can also detect moisture that cannot be physically reached with moisture meters.
Average Flat Rate
Some plumbing jobs are billed at a flat rate. As of 2025, the average plumber rates for larger repairs are typically between $500 to $800, while smaller jobs like repairing toilets, sinks, faucets, or bathtubs typically range from $125 to $350.
The plumber attaches a water pressure gauge to a faucet or fixture connection, turns the fixture on to pressurize the gauge, and turns the water meter off to observe the gauge pressure. If the gauge's pressure decreases, there's likely a leak in the system.