Understanding plumbing terminology helps you make informed decisions about your home's systems. Browse our comprehensive guide below.
A sacrificial metal rod inside a water heater tank that corrodes instead of the tank itself, extending the water heater's lifespan. Should be inspected and replaced every 3-5 years.
Learn about Water Heaters →A physical separation between a water outlet and the flood level of a fixture, preventing contaminated water from being siphoned back into the clean water supply.
A device installed on water lines to prevent contaminated water from flowing backward into the clean water supply. Required by code in many applications.
A shut-off valve with a ball-shaped internal mechanism that provides a reliable seal. Commonly used for main water shut-offs.
A closed vessel in which water is heated to produce steam or hot water for heating systems. Common types include gas-fired, oil-fired, and electric boilers.
Learn about Boiler Services →A unit of measurement for heating and cooling capacity. One BTU is the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit.
A valve that allows fluid to flow in only one direction. Essential for sump pumps to prevent pumped water from flowing back into the sump pit.
Learn about Sump Pumps →A pump that moves hot water through a hydronic heating system. Used in boiler systems and radiant floor heating.
Water that forms when steam or water vapor cools and returns to liquid form. High-efficiency furnaces and boilers produce condensate that must be drained properly.
The plumbing system that removes wastewater and sewage from a building while allowing air to enter the system for proper drainage.
A tube inside a water heater that directs cold incoming water to the bottom of the tank, where it can be heated efficiently.
A tank that absorbs excess water pressure caused by thermal expansion in closed plumbing and heating systems. Prevents pressure relief valves from discharging.
Liquid waste discharged from a septic tank, sewage treatment plant, or industrial process.
A pipe or duct that carries combustion gases from a furnace, boiler, or water heater to the outside of the building.
A switch activated by water level, commonly used in sump pumps to turn the pump on when water rises to a certain level.
Learn about Sump Pumps →The system of pipes that delivers natural gas or propane to appliances such as furnaces, water heaters, stoves, and dryers. Must be installed by licensed professionals.
Learn about Gas Piping Services →A measurement of water flow rate. Important when sizing water heaters, pumps, and fixtures.
A measurement of water hardness. Water with more than 3.5 GPG is considered hard and may benefit from a water softener.
Learn about Water Treatment →Water containing high concentrations of dissolved minerals, primarily calcium and magnesium. Causes scale buildup in pipes and appliances.
Learn about Water Treatment →A heating system that uses water to transfer heat. Includes radiators, baseboard heaters, and radiant floor systems.
Learn about Radiant Heating →The primary valve that controls water flow into a building. Knowing its location is essential for emergencies.
A fitting that connects multiple pipes to a single source. Used in radiant heating systems and modern plumbing distribution systems.
A curved pipe beneath sinks and drains that holds water to prevent sewer gases from entering the building.
A safety valve that releases water or steam when pressure exceeds safe limits. Found on water heaters and boilers.
A flexible plastic tubing commonly used for water supply lines. More resistant to freezing and easier to install than copper.
A heating system installed beneath flooring that heats a room from the ground up using hot water tubes or electric elements.
Learn about Radiant Heating →The amount of water a water heater can heat in one hour. Higher recovery rates mean faster hot water replenishment.
A pump installed in the lowest part of a basement or crawlspace to remove water that accumulates in a sump basin, preventing flooding.
Learn about Sump Pump Installation →The main pipe that carries wastewater from a building to the municipal sewer system or septic tank.
Learn about Camera & Sewer Inspection →Pipes that bring fresh water into a building and distribute it to fixtures and appliances.
A water heater that heats water on demand as it flows through the unit, rather than storing heated water in a tank. More energy-efficient for many households.
Learn about Water Heaters →A device that monitors and regulates temperature in heating and cooling systems.
A vertical pipe that allows air into the drainage system, ensuring proper flow and preventing siphoning of trap water.
A loud banging noise in pipes caused by the sudden stop of water flow. Can be prevented with water hammer arrestors.
An appliance that heats water for domestic use. Types include tank (storage), tankless (on-demand), and heat pump water heaters.
Learn about Water Heater Installation →A filtration system that removes calcium and magnesium ions from hard water through ion exchange, protecting pipes and appliances from scale buildup.
Learn about Water Treatment →A valve that controls water flow to specific zones in a hydronic heating system, allowing different areas to be heated independently.
Learn about Radiant Heating →Our licensed plumbers are here to help. Contact us for expert advice and free quotes.
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