Intex 28433EP PureSpa Pump Control Unit Replacement — Fix Your Hot Tub for $298.99, Don't Toss It

Two Thousand Years of Hot Water Engineering

The Romans took their hot soaking so seriously that they built aqueducts, furnace rooms and underfloor heating systems just to keep the water warm — the Great Bath at Bath, England has been holding water since roughly the first century. Their heating plant was a crew of workers feeding a furnace day and night. Yours is a black plastic box about the size of a mini fridge. And when that box quits, two millennia of bathing tradition in your backyard comes to an abrupt, cold stop.

The Roman Baths — humanity's original backyard spa project (photo: Wikimedia Commons)

The Saddest Sight on a Curb

Here's a scene that plays out every summer: a perfectly good inflatable hot tub, deflated and folded over a trash can, because "it stopped working." Nine times out of ten, nothing is wrong with the tub at all. The liner holds air fine. The cover is fine. What died is the pump and control unit — the one component with a heater, a blower, a filter pump and a circuit board in it, the part doing all the actual work while the tub just sits there being a big friendly balloon. Throwing out the whole spa because the control base failed is like scrapping a car because the alternator went.

The Repair-vs-Replace Math

An Intex PureSpa setup is roughly a $700 investment when you buy it new. When the control unit fails out of warranty, you have two options: spend another several hundred dollars replacing the entire spa — tub, cover, accessories and all, most of which you already own in working condition — or replace the one part that actually broke. That's the Intex 28433EP PureSpa pump and control unit base, and we have one, open box, for $298.99. For less than half the cost of a whole new spa, your existing tub goes from lawn ornament back to hot tub.

• Complete working core — this is the black control base containing the heater, the bubble blower and the filter pump for the 120-bubble-jet PureSpa system
• Touch control panel with LED display — the full brain of the spa, not just a motor
• Fits the Intex PureSpa 28433EP — check the model number printed on your existing unit before ordering
• Easy installation — the design is made to connect to the spa tub without special tools

Read This Part Twice

To be completely clear, because we'd rather lose a sale than get a surprised email: this listing is the pump / control unit only. The inflatable spa tub, cover, filter cartridges and other accessories are not included. This is the replacement part for people who already own a PureSpa 28433EP with a dead or dying base — or a spare for people who love theirs and know exactly which component is the weak link. It's the guts, not the balloon.

Why Buy It From a Warehouse in Mesa?

Because finding a control base sold separately is genuinely hard — most places want to sell you the whole spa again. AZ Sun Valley Sales is a family-run liquidation reseller in Mesa, Arizona, and odd-but-valuable parts like this are exactly what we hunt for. This unit was inspected and photographed by us in our warehouse, ships within 1 business day, and is covered by our 30-day returns. Shipping is weight-based, $5 to $35. If your PureSpa has been sitting sad and cold in the yard, the fix costs $298.99 — not $700, and definitely not a trip to the curb.