Plumbing 101: Does Your Home Have Poorly Vented Drain Lines?

Does your home have poorly vented drain lines? Many homeowners are unaware that their plumbing drain line has a vent system. Most people think plumbing is just about water pipes and the water running through them. However, vents have a prominent role. They maintain neutral air pressure in your plumbing pipe system, so that gravity can pull waste water through the pipes, down into the sewer or septic tank.

How Do Plumbing Vents Get Clogged?

In addition to its pressurizing function, vents also expel unhealthy sewer gases outdoors and bring oxygen into the system. Oxygen is necessary to help break down waste. Since the vents typically run upward through your home’s roof, poorly vented drain lines can easily become a problem. The vent pipes sticking out of your roof can become clogged with leaves, limbs and other debris, even though most are equipped with a vent cap to keep larger materials out.

Signs of Poorly Vented Drain Lines

  • Slow drains: Stagnant, standing water or slowly draining bathtubs and sinks may occur when there’s a lack of ventilation, which normally allows waste water to drain down into the sewer. If the problem can’t be solved with a plunger, your plumber can check your roof vents with an auger or another specialized equipment.
  • Gurgling noise: That’s the sound of water trying to flow down the sewer pipe with airflow restricted by a clogged plumbing vent.
  • Rotten egg smell: If your home begins to smell like sewage, your plumbing system air pressure is too low due to poorly vented drain lines. Low pressure lets water drain downward in response to gravity, opening the seal that should keep hazardous methane sewer gas locked out of your home.

If you suspect that you may have poorly vented drain pipes, contact Beyer Boys right away. We’re a family-owned business that has been serving San Antonio and the South Texas area for more than 25 years.

Our goal is to help educate our customers in the greater San Antonio, Texas area about energy and home comfort issues (specific to HVAC systems).

Credit/Copyright Attribution: “woaiss/Shutterstock”

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