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Spa Circulation Pumps

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Spa Filter Cartridges

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Spa Mineral Sanitizers

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826 products

  • -37% Off
    Santanna II Outdoor Use Air Blower 1.5Hp110V

    Santanna II Outdoor Use Air Blower 1.5Hp110V

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    Santanna II Outdoor Use Air Blower 1.5Hp110V

    Waterway Plastics

    750-3151-28O
    Sale Price Value: 0 Sale Price Number: 0 Website Price Value: 0 Website Price Number: 0 All Metafields: {"mpn":"750-3151-28O","saleprice":"0","warehouselocations":"Memphis, TN","warranty":"12 Months"}
    $242.20
    $387.50 $242.20
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  • -37% Off
    Santanna II Outdoor Use Air Blower 1Hp 220V

    Santanna II Outdoor Use Air Blower 1Hp 220V

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    Santanna II Outdoor Use Air Blower 1Hp 220V

    TODELETE

    750-3102-28O
    Sale Price Value: 0 Sale Price Number: 0 Website Price Value: 0 Website Price Number: 0 All Metafields: {"mpn":"750-3102-28O","saleprice":"0","warehouselocations":"Tucson, AZ","warranty":"12 Months"}
    $220.20
    $352.30 $220.20
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  • -41% Off
    Blower, 1-1/2Hp 220V, 3Ft 4-Pin Amp Cord

    Blower, 1-1/2Hp 220V, 3Ft 4-Pin Amp Cord

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    Blower, 1-1/2Hp 220V, 3Ft 4-Pin Amp Cord

    TODELETE

    700-3152-38X
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    $159.40
    $271.20 $159.40
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  • -41% Off
    Blower, 1-1/2Hp 115V, 3Ft Blank Cord

    Blower, 1-1/2Hp 115V, 3Ft Blank Cord

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    Blower, 1-1/2Hp 115V, 3Ft Blank Cord

    Waterway Plastics

    700-3151-38O
    Sale Price Value: 0 Sale Price Number: 0 Website Price Value: 0 Website Price Number: 0 All Metafields: {"mpn":"700-3151-38O","saleprice":"0","warehouselocations":"Memphis, TN","warranty":"12 Months"}
    $173.20
    $294.80 $173.20
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  • -35% Off
    Sspa-Mp Lower Control For At Home

    Sspa-Mp Lower Control For At Home

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    Sspa-Mp Lower Control For At Home

    Dimension One

    01782-1000
    Sale Price Value: 0 Sale Price Number: 0 Website Price Value: 0 Website Price Number: 0 All Metafields: {"bundle":"gid:\/\/shopify\/Metaobject\/110238498881","mpn":"01782-1000","warranty":"12 Months"}
    $990.90
    $1,530.10 $990.90
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  • -35% Off
    Circulation Pump, D-1 With Flow Switch

    Circulation Pump, D-1 With Flow Switch

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    Circulation Pump, D-1 With Flow Switch

    Dimension One

    01512-320E
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    $268.80
    $415.40 $268.80
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  • -37% Off
    Zodiac Nature 2 Cense, Divine Secret ,4/PK, Bulk

    Zodiac Nature 2 Cense, Divine Secret ,4/PK, Bulk

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    Zodiac Nature 2 Cense, Divine Secret ,4/PK, Bulk

    Zodiac Pool Systems

    W25003B
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    $247.30
    $395.70 $247.30
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  • -37% Off
    Zodiac Nature 2 Cense, Island Pleasures 4/PK, Bulk

    Zodiac Nature 2 Cense, Island Pleasures 4/PK, Bulk

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    Zodiac Nature 2 Cense, Island Pleasures 4/PK, Bulk

    Zodiac Pool Systems

    W25000B
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    $218.00
    $348.80 $218.00
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  • -49% Off
    Cartridge, 60sqft, ht, 2" mpt b, 5-3/16", 16-1/16", 3oz MB

    Cartridge, 60sqft, ht, 2" mpt b, 5-3/16", 16-1/16", 3oz MB

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    Cartridge, 60sqft, ht, 2" mpt b, 5-3/16", 16-1/16", 3oz MB

    Filbur

    FC-0204M
    Sale Price Value: 0 Sale Price Number: 0 Website Price Value: 0 Website Price Number: 0 All Metafields: {"bundle":"gid:\/\/shopify\/Metaobject\/110322024513","filburnumber":"FC-0204M","filterbottomstyle":"Male Pipe Thread (mpt)","filterdiameter":"5-3\/16 inches","filterlength":"16-1\/16 inches","filtermediatype":"3oz Microban","filtersquarefootage":"60 sq ft","filtertopstyle":"Handle","mpn":"FC-0204M","saleprice":"0","warranty":"12 Months"}
    $74.60
    $148.30 $74.60
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  • -35% Off
    Balboa BP7 Spa Retrofit Kit - 5.5kW Heater with TP500 Keypad

    Balboa BP7 Spa Retrofit Kit - 5.5kW Heater with TP500 Keypad

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    Balboa BP7 Spa Retrofit Kit - 5.5kW Heater with TP500 Keypad

    Balboa

    G6505
    Sale Price Value: 0 Sale Price Number: 0 Website Price Value: 0 Website Price Number: 0 All Metafields: {"mpn":"G6505"}
    $431.00
    $666.10 $431.00
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Spa Products

Shop discounted spa parts and supplies from Waterway Plastics, Laing Thermotech, Filbur, Balboa Water Group, and BluWater Technology. PST Pool Supplies offers a curated selection of high-demand spa components — pumps, filter cartridges, circulation pumps, and water treatment systems — at competitive prices.

This collection brings together the most frequently purchased spa components across multiple categories for convenient one-stop ordering: Waterway EX2 therapy pumps (2.0SPL and 3.0SPL, 230V, 2-speed, 48-frame, 2\" connections) are high-performance replacement pumps for the jet circuits in residential hot tubs — the 2-speed design allows quiet, energy-efficient low-speed operation for light use and full-power high speed for therapy. The EX2 is one of the most widely compatible therapy pump platforms for residential spa replacement. The Vico Power WOW bath pump (1.0hp, 115V, single-speed) is a compact, quiet pump used in whirlpool bath and smaller portable spa installations. The Laing E-14 circulation pump is a whisper-quiet, low-power circulation pump (approximately 40% lower power consumption than standard circ pumps) used in spa filtration and heating systems that run the circ pump continuously — the low wattage makes it well-suited for 24/7 operation. The Filbur filter cartridges (100 sq ft and 155 sq ft, Microban antimicrobial) are replacement cartridges for the two most common large-format spa filter housings. The BluWater bromine generator (115V/230V, up to 1,500 gallons, with topside controller) provides automatic bromine generation from sodium bromide salt — delivering consistent bromine sanitation without handling tablets. The Zodiac Nature2 G Vessel (W25904, 2\" professional in-ground) is the full mineral sanitizer vessel for in-ground spa and pool installations.

When ordering spa pumps, confirm the horsepower rating (service factor HP vs. nameplate HP), voltage (230V for most residential therapy pumps), frame size (48-frame is standard for residential spas), and connection size (2\" for most therapy pumps, 3/4\"–1\" for circulation pumps). Circulation pumps and therapy pumps serve different functions and are not interchangeable — therapy pumps move high volumes at high pressure for jets; circulation pumps move low volumes continuously for filtration and heating.

Shop discounted spa parts and supplies at PST Pool Supplies and find the components your hot tub needs at competitive prices with fast shipping.

Frequently Asked Questions

What is the difference between a spa therapy pump and a circulation pump?
These two pump types serve entirely different functions and are not interchangeable: Therapy pumps (like the Waterway EX2) move large volumes of water at high pressure to power the jet bodies — they run only when jets are activated, typically for 15–30 minute sessions. Therapy pumps are large (1.5–6 hp), draw significant current (10–25+ amps), and are designed for intermittent high-duty-cycle operation. They connect to the jet manifold plumbing through 2" or larger fittings. Circulation pumps (like the Laing E-14) move small volumes of water continuously, 24 hours a day, through the filter and heater for water quality maintenance and temperature holding. Circ pumps are tiny (typically 1/15 to 1/6 hp), draw minimal current (1–3 amps), and run continuously. They connect to smaller plumbing (typically 3/4"–1" lines). Spas may have one therapy pump (for jets only), a therapy pump plus a separate circ pump, or two therapy pumps plus a circ pump. The circ pump is what keeps the water filtered and heated between jet sessions — its continuous low-power operation is far more efficient than cycling the therapy pump for filtration.
How does a bromine generator differ from a standard bromine tablet system?
Both deliver bromine sanitation but the mechanism and maintenance experience are very different: Standard bromine tablet systems use a floating dispenser or inline feeder filled with slow-dissolving sodium bromide/bromo-chloro-dimethylhydantoin (BCDMH) tablets. Bromine levels must be monitored and adjusted by adding or removing tablets, and can spike after refilling the feeder. Bromine generators (like the BluWater unit) electrolyze sodium bromide salt dissolved in the spa water to produce bromine on demand — similar to how salt chlorine generators work for pools. The generator's output can be adjusted via topside controller to match the spa's demand, producing consistent bromine levels without physical tablet handling. Benefits of a generator: no tablet procurement or storage, consistent bromine levels, reduced chemical peaks and valleys, and the ability to fine-tune output remotely. The BluWater generator handles spas up to 1,500 gallons and requires sodium bromide salt (not the same as pool salt) to be dissolved in the spa water initially and replenished periodically. Bromine generators work best in spas with stable bather loads and consistent use patterns.
When should I replace my spa's circulation pump?
Spa circulation pumps run 24/7 and typically last 5–10 years before needing replacement. Signs that the Laing E-14 or similar circ pump needs replacement: (1) No circulation — the most definitive sign; with the circ pump failed, water stops moving through the filter and heater. The spa may display a flow or pressure error even though the therapy pump is not running. (2) Unusual noise — a grinding, rattling, or high-pitched whining from the circ pump location in the equipment cabinet indicates bearing failure. The pump may continue running while noisy, but bearing failure is progressive and leads to complete failure. (3) Water leak at the pump shaft seal — a slow drip from the pump's shaft area indicates mechanical seal failure. The Laing E-14 uses a wet-rotor design with no shaft seal (the motor rotor runs in the water), so leaking on a Laing unit indicates a housing crack or O-ring failure rather than a shaft seal. (4) High electricity consumption — a failing circ pump motor may draw more current than normal as it works against increased friction; less obvious without a power monitor but detectable. The Laing E-14's 40% lower power draw versus standard circ pumps makes it an energy efficiency upgrade as well as a direct replacement.
What Waterway EX2 pump do I need for my spa?
The Waterway EX2 is available in multiple horsepower ratings — select based on your original pump's specifications: The EX2 2.0SPL (2.0 service factor horsepower, 230V, 2-speed) is suited for mid-range spa jet circuits — one or two jet zones in a standard residential hot tub. The EX2 3.0SPL (3.0 service factor horsepower, 230V, 2-speed) provides higher flow for larger spas with more jet bodies or longer plumbing runs. Both are 48-frame, 2" connections — the 48-frame designation means the motor mounting pattern matches any 48-frame wet end or motor. To confirm the correct replacement: (1) Check the specification label on your existing pump (mounted on the motor housing) for HP, voltage, and frame size. (2) Verify the plumbing connection size — EX2 pumps use 2" MBT (male buttress thread) connections standard on residential spa therapy pump plumbing. (3) Note the pump's discharge orientation (side discharge vs. center discharge) and confirm the EX2 matches — plumbing may need minor adjustment if the discharge orientation differs. Both EX2 models include the motor; the wet end must be compatible or is included depending on the SKU.