Spa Circulation Pumps

Collection: Spa Circulation Pumps

309 products

Spa, Hot Tub & Jacuzzi Circulation Pumps

Restore full jet power and water circulation to your spa or hot tub with replacement circulation pumps from Balboa Water Group, Laing Thermotech, Waterway Plastics, and Custom Molded Products — 1.0 to 3.0 horsepower jet pumps and dedicated circulation pumps in 115v and 230v configurations. PST Pool Supplies stocks spa pumps starting from $155.50.

Spas use two distinct pump types that serve different functions, and this collection covers both: Jet pumps (also called bath pumps or therapy pumps) are the high-flow motors that pressurize the spa's jet system — they run when bathers activate the jets, pushing water through the manifold and out the jet nozzles at high velocity for hydrotherapy. The Balboa Water Group Vico WOW series (1.0hp 115v $155.50; 1.5hp 115v) and BWG 2-Speed (2.5hp 230v, $514.20) are quiet, single- and two-speed jet pumps engineered for ultra-quiet operation with no intrusive pump noise — critical in spa environments where sound is part of the experience. The Waterway Ex2 series (2.0 SPL 230v 2-speed $520.40; 3.0 SPL 230v 2-speed $528.50) are 48-frame two-speed jet pumps delivering high-speed therapy power with low-speed efficiency for circulation and heating cycles. The CMP Ninja bath pumps (115v, 6.3A $322.20 and 7.2A $373.30) provide reliable jet performance with 1-1/2" MBT connections for straightforward plumbing replacement. Dedicated circulation pumps like the Laing E-14 (230v, $308.20) are a separate category — small, continuously running low-wattage pumps (115 watts) that maintain water flow through the heater and filter 24/7, independent of the jet pump. The Laing E-14 uses 40% less power than standard circulation pumps and includes dry-run protection — extending heater and equipment life while minimizing operating cost.

When selecting a replacement pump, match horsepower, voltage (115v or 230v), speed (1-speed or 2-speed), frame size (48-frame is standard for most residential spas), and connection size/type (1-1/2" MBT is most common; verify before ordering). Two-speed pumps run at low speed for filtration and heating, high speed for jet therapy — they significantly reduce operating costs compared to single-speed equivalents. If your spa has both a jet pump and a separate circ pump, each needs to be replaced like-for-like.

Shop spa and hot tub circulation pumps at PST Pool Supplies and restore the full performance of your hot tub's jet and filtration systems.

Frequently Asked Questions

What is the difference between a spa jet pump and a dedicated circulation pump?
These are two functionally distinct pump types that many modern spas use simultaneously — understanding the difference is essential for correct replacement: Jet pumps (therapy pumps / bath pumps): high-flow, high-pressure motors that run on demand when bathers activate the jet controls. They move large volumes of water through the jet manifold to create the hydrotherapy pressure at the nozzles. Jet pumps typically run for 15–60 minute sessions, not continuously. They are sized in horsepower (1.0–3.0hp) and available in single-speed or two-speed configurations. Most spa failures that present as "weak jets" or "no jets" are jet pump failures. Examples in this collection: Balboa Vico WOW, Waterway Ex2, CMP Ninja. Dedicated circulation pumps (circ pumps): small, ultra-low-wattage motors (typically 50–200 watts) that run continuously 24/7 to maintain water flow through the heater and filter. They do NOT power the jets — their sole purpose is to keep water moving through the heating and filtration loop at a slow, constant rate. This keeps the spa water at temperature and filtered without running the large jet pump continuously (which would be expensive and noisy). The Laing E-14 in this collection is a dedicated circ pump. How to identify which has failed: if jets have no pressure but the water stays heated and filtered — the jet pump has failed. If the water gets cold and unfiltered even though jets work fine — the circ pump has failed. Some smaller or older spas use only a jet pump (no dedicated circ pump) — the jet pump runs at low speed for circulation and heating, and high speed for therapy.
How do I identify the right replacement pump for my spa?
Correct spa pump identification requires matching several specifications — get all of them right and the replacement drops in without modification: Step 1 — locate the pump label: the existing pump has a data label on the motor housing (usually white, on the cylindrical motor end). This label contains all critical specs. Step 2 — record these specifications: (1) Horsepower (HP) — actual HP and service factor HP ("SPL" or "THP"). For example, "2.0 SPL" means 2.0 HP at service factor. Match this exactly. (2) Voltage — 115v or 230v. Non-negotiable — must match your spa's electrical circuit for that pump. (3) Speed — 1-speed or 2-speed. Two-speed pumps have two sets of amperage ratings on the label (e.g., "11.0A / 3.3A" — high speed / low speed). (4) Frame — 48-frame is the residential standard; 56-frame is larger. The frame determines the motor's physical mounting dimensions. (5) Connection size and type — most spa pumps use 1-1/2" or 2" MBT (male buttress thread) connections on the wet end. Measure or record the existing connection size. (6) Rotation — most spa pumps are standard rotation; confirm if the label specifies. Step 3 — match the wet end: the wet end (the non-motor portion housing the impeller) has its own part number separate from the motor. For exact OEM replacement, both the motor and wet end should match. If you are replacing only the motor, verify the wet end thread interface matches. Brand substitution: cross-brand replacement is acceptable as long as all specs match — you do not need to use the original manufacturer's brand.
What does a two-speed spa pump do and is it worth choosing over single-speed?
Two-speed spa pumps (like the Waterway Ex2 and BWG 2-Speed in this collection) have two distinct operating speeds controlled by the spa pack: Low speed: typically runs at 1/4 to 1/3 of full power — quiet, low-amperage circulation mode used for filtration cycles, heating, and maintaining water temperature between uses. A 3.0hp pump at low speed draws the same amperage as a small fractional-HP pump. High speed: full power jet therapy mode — runs when the bather activates the jets for the full hydrotherapy experience. Why two-speed is usually worth it: (1) Energy savings — spa packs run filtration cycles for 4–8 hours per day. A two-speed pump at low speed during these cycles consumes a fraction of the electricity of a single-speed pump at full power. Over a year, this difference is significant on the electric bill. (2) Quieter operation between uses — low-speed filtration is nearly silent compared to a single-speed pump running at full RPM. (3) Longer motor life — motors run at low speed experience less thermal stress and mechanical wear than full-speed continuous operation. (4) Same therapy performance — at high speed, a two-speed pump delivers identical jet performance to a single-speed equivalent. When single-speed makes sense: if the spa originally used a single-speed pump and the control system (spa pack) does not support two-speed pump wiring (two-speed pumps require a 3-wire connection to the spa pack vs. the 2-wire connection for single-speed), replacing with single-speed is simpler. Verify your spa pack's pump terminal configuration before selecting a two-speed replacement.
How do I replace a spa jet pump and what tools do I need?
Spa jet pump replacement is a manageable DIY project for homeowners comfortable with basic plumbing and electrical work. Here's the complete process: Tools needed: adjustable wrench or channel-lock pliers, flat-head and Phillips screwdrivers, non-contact voltage tester, Teflon tape or plumber's putty (for threaded connections), and silicone O-ring lubricant. Safety first: (1) Shut off the spa's dedicated breaker at the main electrical panel. (2) Verify power is off with a non-contact voltage tester at the pump wiring before touching any connections. Water isolation: (3) Close the gate or ball valves on the suction and discharge lines of the pump. If your spa has no isolation valves, you will need to drain the spa to the level below the pump. Pump removal: (4) Open the spa equipment compartment. (5) Photograph all plumbing and wiring connections before disconnecting anything. (6) Disconnect the union connections on the suction (inlet) and discharge (outlet) lines — rotate the union collars counterclockwise by hand or with pliers. (7) Disconnect the pump wiring at the spa pack terminal block — note which wires connect to which terminals (photograph first). Remove the motor from its mounting bracket. Installation: (8) Position the new pump on the mounting bracket in the same orientation as the original — the wet end inlet must align with the suction plumbing. (9) Connect the union fittings — hand tighten plus 1/4 turn (do not over-tighten union collars; they seal on an O-ring, not thread engagement). Lubricate union O-rings with silicone lubricant before assembly. (10) Reconnect the wiring to the spa pack terminals matching the original configuration. (11) Open the isolation valves. (12) Restore power at the breaker. (13) Prime the pump if needed (wet the pump housing through the union before starting), then test all speeds. Check all union connections for leaks after the first 10 minutes of operation.