Pool Water Leveler

Collection: Pool Water Leveler

17 products

Water Levelers for Swimming Pools

Keep your pool at the correct water level automatically with a pool water leveler from CMP, Pentair, Paramount, Jandy, and GQF Manufacturing. PST Pool Supplies stocks automatic float valves, complete AutoFill systems, portable water levelers, and level sensor kits that maintain your pool's water level 24/7 without manual intervention, starting from $20.60.

Pool water levelers work on the same principle as a toilet tank fill valve: a float-actuated valve opens when the water level drops below a set point, admits fresh water from the house supply line, and closes when the correct level is restored. The CMP thermoplastic float valve and CMP 1/2" float valve are the core fill valve components for built-in leveler installations, mounted inside a leveler housing in the pool wall or deck. CMP also offers leveler collars (gray, white) and covers (white, tan) as individual components for complete or replacement installations. The Aqualevel Portable Water Leveler (CMP, white) is a self-contained unit that hangs on the pool wall and connects to a garden hose — no installation required, ideal for pools without a built-in leveler or for seasonal use. The Pentair T26 AutoFill brass float valve is a premium brass float valve for built-in autofill installations, and the Pentair Automatic Water Filler with Fluidmaster Valve (black) provides a complete assembly with Fluidmaster's reliable toilet-style fill mechanism adapted for pool use. The Paramount Paralevel startup kit is the initial installation kit for Paramount's in-floor level system. The Jandy Pro Series solenoid kit and 2-contact level sensors (half-moon 100ft and slip-style 100ft) are electronic water level detection components used with Jandy automation systems to trigger the pool's fill valve via the controller rather than a simple float. The GQF float valve with restrictor seal provides precise flow restriction for applications requiring controlled fill rates.

Maintaining correct pool water level is critical for pump performance and safety: water that drops below the skimmer opening causes the pump to draw air rather than water, leading to loss of prime and potential pump cavitation damage — a pump run dry for even a few minutes can destroy its shaft seal and impeller. Conversely, water too high submerges the skimmer opening and eliminates surface skimming. The correct level is mid-skimmer — water should be at the center of the skimmer opening. An automatic water leveler handles daily evaporation losses (typically 1/4" to 1/2" per day in hot climates), backwash water loss, and splash-out without requiring the pool owner to monitor and manually add water. For pools connected to home automation systems, the Jandy sensor-based approach provides level monitoring through the automation controller dashboard.

Shop pool water levelers and ensure your pool always has the correct water level — automatically.

Frequently Asked Questions

How does an automatic pool water leveler work?
A pool water leveler works on the same float-valve principle as a toilet tank fill valve. A float is mounted inside a leveler housing (built into the pool wall, deck, or skimmer) and connected to a valve on a fresh water supply line. When the pool water level drops below the set point — from evaporation, splash-out, or backwash — the float drops with it, opening the fill valve and admitting fresh water from the house supply. When the water level rises back to the set point, the float lifts and closes the valve. The cycle operates automatically, 24/7, without any manual intervention. Electronic levelers (Jandy Pro Series sensor-based) replace the float with a contact-sensor probe and use a solenoid valve triggered by the pool automation controller — providing level monitoring through the automation panel and the ability to set fill schedules or receive alerts. For pools without an automation system or built-in plumbing, the Aqualevel Portable Water Leveler achieves the same result using a garden hose and a float valve that hangs on the pool wall.
Can a pool water leveler damage my pump if it malfunctions?
A pool water leveler protects your pump from low-water damage rather than causing it — but a stuck-open fill valve is worth understanding. If the float valve sticks in the open position (from debris, mineral scale, or a worn seat), the leveler will overfill the pool continuously. Overfilling: (1) Raises water above the skimmer opening, eliminating surface skimming — the pool will collect surface debris and oils that can no longer enter the skimmer. (2) Can flood the pool deck and surrounding area if severe. (3) Results in a large water bill from continuous water loss down the pool overflow. To prevent this, inspect your leveler annually — clean mineral scale from the float and valve seat, confirm the float moves freely, and verify the valve closes completely at the correct water level. Most CMP and Pentair float valves include a flow restrictor that limits maximum fill rate even if the valve sticks open, reducing overfill risk. A water shut-off valve on the fill line (required by most codes) allows the leveler supply to be closed manually during extended periods away from home.
What is the Aqualevel Portable Water Leveler and how do I set it up?
The CMP Aqualevel Portable Water Leveler is a self-contained, no-installation water leveler designed to hang on the pool wall and connect to a standard garden hose. It requires no plumbing work, no wall penetration, and no professional installation — making it ideal for pools without a built-in autofill line, above-ground pools, or as a temporary fill solution during high-evaporation periods. Setup: (1) Connect a garden hose to the Aqualevel's inlet. (2) Hang the unit over the pool wall at the desired water level height — the unit's hanging bracket positions the float at the target water level. (3) Turn on the hose supply. The internal float valve will open to fill the pool to the correct level and close when the float reaches the set point. The correct hanging position sets the desired water level — adjusting the unit's height on the pool wall raises or lowers the maintained water level. The Aqualevel is not a permanent solution for pools with high evaporation in hot climates (it uses a garden hose connection, not a dedicated supply line), but it is highly effective for seasonal use or pools with modest daily evaporation needs.
How do I set the correct water level for my pool's water leveler?
The correct pool water level for skimmer performance is mid-skimmer opening — water should be at approximately the midpoint of the skimmer's rectangular throat opening. At this level: the skimmer weir (floating flap) operates correctly, a thin sheet of surface water continuously flows over the weir into the basket, and the pump has adequate water depth above the suction port. Too low (below the bottom of the skimmer opening): the pump draws air, loses prime, and can cavitate — damaging the impeller and shaft seal. Too high (above the top of the skimmer opening): the entire skimmer throat is submerged, surface water flows in sluggishly, and floating debris is not efficiently captured. To set a float-valve leveler: adjust the float arm's position (bend slightly or use the adjustment screw on Pentair/Fluidmaster valves) until the valve closes at the desired mid-skimmer water level. For built-in levelers with a separate housing, the leveler housing's opening height typically sets the fill level automatically — water fills until it reaches the leveler housing's inlet opening.