Quick Answer: Costco sells two very different things under the “hot tub” banner: rotomolded hard-shell plug-and-play spas from Aquaterra (made by Watkins, the Hot Spring maker) and Evolution by Strong Spas at $2,999.99-$4,599.99, plus a seasonal SaluSpa inflatable/foam tub at $499.99-$749.99. The best pick for most buyers is the Aquaterra Benicia 20-jet at $2,999.99 — the cheapest and highest-rated plug-and-play spa on Costco.com (4.5 stars, 472 member reviews on October 28, 2026). Know the catch before you order: on a 115V outlet, Watkins’ own manual says the heater gives only about 1,000 watts and switches off when the jets run on high, and Costco delivers to the curb only.
Published October 28, 2026 — prices, ratings and specs pulled directly from Costco.com’s hot tub listings on October 28, 2026; heater and warranty terms from the manufacturers’ own owner’s manual and warranty documents.
Costco is a hot tub store many buyers never think to check — and a confusing one, because its “Plug-n-Play” label covers 300-gallon hard-shell spas weighing up to 425 lbs empty, not just the inflatable tubs that phrase usually means. This guide sorts the whole lineup by what actually runs on a household outlet, then walks through the fine print on heating, delivery, warranty and returns that the product pages bury below the fold.
Costco hot tubs by the numbers
- 23 hot tubs were listed on Costco.com’s “Portable Hot Tubs With Jets” page on October 28, 2026 — 7 rotomolded “Plug-n-Play” spas that run on 110V/120V, 1 SaluSpa foam-wall AirJet tub, and 15 larger spas without the plug-and-play label.
- About 1,000 watts vs. about 4,000 watts: per Watkins Manufacturing’s Aquaterra owner’s manual (115V/230V models), the heater delivers roughly 1,000 W on a 115V/15A outlet and only while the pump is on low speed, versus roughly 4,000 W at any pump speed on a dedicated 230V/40A GFCI circuit.
- About 2°F per hour, best case: that 1,000 W heater can raise the 205-gallon Benicia’s water by at most about 2°F an hour before any heat loss (1,000 W = 3,412 BTU/h, divided by roughly 1,710 lbs of water) — so a cold 60°F fill takes 21+ hours to reach 102°F, against roughly 5-6 hours at 4,000 W.
- 4.4-4.5 stars vs. 3.9-4.1 stars: Costco member ratings on October 28, 2026 put Aquaterra’s four plug-and-play spas at 4.4-4.5 stars across 404-532 reviews each, versus 4.1 stars (583 reviews) for the Evolution Rockport and 3.9 stars (112 reviews) for the Evolution Adventure.
- Lifetime vs. 5 years on the shell: Evolution’s rotomolded warranty covers shell and structure for life with 2 years on equipment and labor; Watkins’ Aquaterra warranty covers structure and shell for 5 years with 1 year on equipment and labor.
Every Costco hot tub that plugs into a household outlet
| Model | Type | Seats | Jets | Water | Dry weight | Power | Costco price (Oct 28, 2026) | Member rating |
|---|---|---|---|---|---|---|---|---|
| Aquaterra Benicia | Rotomolded | 4 | 20 | 205 gal | 270 lb | 110V (230V-capable) | $2,999.99 | 4.5 (472) |
| Aquaterra Montara | Rotomolded, lounger | 4 | 25 | 233 gal | Not listed | 110V, "1/4kW" heater | $3,299.99 (was $3,999.99) | 4.5 (464) |
| Aquaterra Calavera | Rotomolded | 4 | 21 | 220 gal | 244 lb | 110V or 230V | $3,499.99 | 4.5 (404) |
| Aquaterra Brighton | Rotomolded | 5-6 | 26 | 264 gal | Not listed | 110V | $3,999.99 | 4.4 (532) |
| Evolution Refresh | Rotomolded | 2 | 22 | 190 gal | 303 lb | 120V | $3,999.99 | 4.3 (8) |
| Evolution Adventure | Rotomolded, lounger | 6-7 | 32 | 300 gal | 425 lb | 120V | $3,999.99 (was $4,599.99) | 3.9 (112) |
| Evolution Rockport | Rotomolded, lounger | 6-7 | 27 | 300 gal | 425 lb | 120V | $4,599.99 | 4.1 (583) |
| SaluSpa Carrara | Foam-wall AirJet | 4-6 | 140 air | 225 gal | 72.6 lb | 120V, 12A | $749.99 | No reviews yet |
| SaluSpa Laguna AirJet | Inflatable | 4 | AirJet | 177 gal (80% fill) | 73 lb | 120V | $499.99 (out of stock online) | No reviews yet |
All seven rotomolded spas are “Direct from Manufacturer” orders, online only, limited to 2 per membership. Prices and stock change often — the table is a snapshot, not a promise.
The best Costco hot tubs, picked
1. Aquaterra Benicia 20-jet, 4-person — Best Costco hot tub overall
- Cheapest plug-and-play hard-shell spa on Costco.com and the highest-rated, at 4.5 stars from 472 members.
- Full-foam insulation, multi-color LED light and a cascading waterfall; the bundle adds a Weatherwise thermal locking cover and steps.
- 61 x 70 x 32 in. and 270 lbs dry — small enough for a patio, light enough for three or four people to carry from the curb.
- Its owner's manual covers both 115V and 230V operation, so it can be rewired to 230V later for full heater output.
The Benicia is the one Costco hot tub we’d recommend without a “but”: it’s the lowest price of the rotomolded group, it has the strongest member rating of any Costco spa with more than 100 reviews, and its 205-gallon size is the easiest of the Aquaterra group to heat on 1,000 watts. It’s also only about $300 more than the AquaRest DISCOVER Standard 150 ($2,699 direct from AquaRest), while bringing 20 jets against the AquaRest’s 12.
2. Aquaterra Brighton 26-jet, 5-6 person — Best for families
- The largest Aquaterra that still plugs into a household outlet, with a 2-speed pump, adjustable waterfall and bottom drain.
- Most-reviewed Aquaterra plug-and-play spa: 4.4 stars from 532 Costco members.
- Bundle includes the Weatherwise thermal locking cover and steps.
- Watch the heat-up: 264 gallons on roughly 1,000 W is the slowest warm-up of the Aquaterra group on 110V.
3. Aquaterra Montara 25-jet, 4-person — Best lounger deal
- The only 4-person Costco spa with a full lounge seat, including calf and foot jets.
- Ozone water care, adjustable waterfall, cover and steps included.
- Costco lists a "1/4kw heater" — most likely shorthand for the manual's 1 kW on 110V / 4 kW on 230V, not a quarter-kilowatt heater.
- 81 x 63 x 33 in., so measure: it's 11 inches longer than the Benicia.
4. Evolution by Strong Spas Rockport 27-jet, 6-7 person — Biggest plug-and-play
- Seats up to 7 with a lounger, built-in ice bucket, two waterfalls and EOS ozone.
- Lifetime shell and structure warranty plus 2 years on equipment, plumbing and labor, per Evolution's own rotomolded-spa warranty — the strongest coverage in this guide.
- 425 lbs dry and 74.5 x 74.5 x 32 in. — plan the move from the curb before it arrives.
- The Evolution Adventure ($3,999.99 on sale, was $4,599.99) shares the same 300-gallon, 425-lb footprint with 32 jets but rates lower, at 3.9 stars from 112 members.
Be realistic about 300 gallons on a household outlet. Costco’s listing doesn’t publish the Rockport’s heater wattage, so we can’t run its exact numbers — but any 120V heater limited by a 15-20 amp circuit is working against roughly 2,500 lbs of water, and reheating after a long, jets-on-high soak with seven people in it will be slow.
5. SaluSpa Carrara 6-person AirJet Foam Spa — Best cheap Costco hot tub
- ThermaCore foam walls with a 3-layer Tritech outer liner — sturdier and better insulated than a standard air-wall inflatable, per Bestway.
- Wi-Fi control through the Bestway Connect app, Freeze Shield, and a heater timer you can set up to 40 days ahead.
- Ships with the cover, 4 pillows, a ChemConnect dispenser, a filter and a repair patch; "threshold delivery" puts it inside your front door or garage.
- Model 6002HE draws 12 amps at 120V and meets the APSP-14/Title 20 efficiency rules required for sale in states including California and New York.
The Carrara is the only Costco tub in the inflatable price class that was actually in stock online when we checked; the classic SaluSpa Laguna AirJet ($499.99) was listed but out of stock, which fits Costco’s pattern of carrying inflatables mainly in spring and summer. If you’re comparing it with the SaluSpa Miami or the Intex PureSpa Plus, see our best inflatable hot tub and Coleman SaluSpa guides.
The 1,000-watt catch on Costco’s “Plug-n-Play” spas
“Plug-n-Play” at Costco means the spa ships with a GFCI cord you plug into a wall — it doesn’t mean the spa performs the same as a hardwired one. Watkins’ owner’s manual for Aquaterra’s 115V/230V spas spells out the tradeoff:
- On 115V: plug into a grounded, dedicated 15-amp receptacle with nothing else on the circuit. The heater gives about 1,000 W, and only while the pump is on low — it doesn’t run while the jets are on high.
- On 230V: wire to a dedicated 40-amp GFCI breaker (4 wires), and the heater gives about 4,000 W at any pump speed. The manual describes the switch — a DIP switch change plus removing a jumper — and recommends a licensed electrician.
- Never an extension cord. The manual calls it a shock hazard and a voltage-drop risk; the SaluSpa listing says the same.
Before you convert, read the warranty: Watkins lists “electrical conversion” among the alterations that void coverage unless you have Watkins’ prior written consent. Call Watkins at (888) 961-7727 and get the approval in writing first. Our hot tub wiring guide covers what a 230V circuit costs to add, and our hot tub keeps tripping breaker guide is the place to start if a shared 15-amp circuit is cutting out.
Delivery, warranty and returns: the fine print
| Term | Aquaterra (Watkins) | Evolution (Strong Spas) | SaluSpa (Bestway) |
|---|---|---|---|
| Delivery | Curbside, signature required, about 4-6 weeks | Curbside by tractor-trailer, about 3-5 weeks | Threshold (inside front door/garage), about 1-2 weeks |
| Shell / structure | 5 years / 5 years | Lifetime / lifetime | Per Bestway's limited warranty |
| Equipment | 1 year, incl. labor | 2 years | Per Bestway's limited warranty |
| Plumbing | 1 year, incl. labor | 2 years | n/a |
| Cabinet | 2 years (synthetic wood) | 2 years (skirting) | n/a |
| Labor | 1 year | 2 years | n/a |
| Moved from ship-to address | Warranty void | Warranty void | Check Bestway terms |
Three things in that fine print matter more than the jet count:
- The curb is where Costco’s job ends. The hard-shell listings say the driver offloads the spa “to the curb at the end of your driveway,” drivers don’t bring it into the house or garage or help unpack, and Costco “is not responsible for moving the hot tub after delivery.” At 244-425 lbs dry, that means three or four helpers or a heavy-duty dolly — our how to move a hot tub guide covers the technique.
- Pick the final spot before delivery day. Both Aquaterra and Evolution void the warranty if the spa is moved away from the original ship-to address, and Watkins’ warranty is non-transferable. Have a level base ready — a hot tub pad or a slab — and check your deck’s weight limit if it’s going on wood.
- Returns exist, but they’re curbside too. Costco.com items can go back to any of Costco’s 800-plus warehouses, and the listings cite Costco’s 100% satisfaction guarantee “with some exceptions and limitations.” For a spa, the listing says return shipping is a “curbside pick up as delivered” — so you drain it, dry it and get it back to the curb yourself.
Costco vs. Amazon and Home Depot: what you actually save
Costco’s hard-shell spas don’t undercut the field on sticker price — the Benicia at $2,999.99 costs more than AquaRest’s 12-jet DISCOVER Standard 150 at $2,699, and sits just below Lifesmart’s LS350DX at roughly $3,199-$3,299. Where Costco can come out ahead is extras: more jets per dollar, a cover and steps bundled in, and membership rewards. Costco membership costs $65 a year (Gold Star) or $130 (Executive), and the Executive tier’s 2% annual reward works out to about $60 back on a $2,999.99 Benicia. Hard-shell spas also discount most in the fall and winter off-season — our hot tub deals guide covers when to buy and how to spot a padded “was” price. If you’d rather avoid the membership and the curbside haul, these are the closest 110V alternatives:
AquaRest DISCOVER Standard 150 (formerly AR-150 Select)
- Roto-molded, 120V plug-and-play — the same construction class as Costco's Aquaterra line.
- Fewer jets than the Benicia (12 vs. 20), but about $300 cheaper and no membership needed.
Lifesmart LS350DX
- Full-foam insulation, ozonator and a Weatherwise thermal locking cover — the same cover brand Costco bundles with Aquaterra.
- More jets than the Brighton for less money, with one fewer seat.
Intex PureSpa Plus
- A true inflatable with a built-in hard-water system — cheaper than the Carrara and usually in stock on Amazon outside the summer rush too.
- Drains and folds flat for winter, unlike Costco's hard shells.
Whichever tub you buy, you’ll need the same first-week supplies — a hot tub chemical starter kit and test strips. See our chemical starter kit picks for what’s worth buying.
Who should buy a hot tub at Costco
- Buy at Costco if you’re already a member, you want a hard-shell spa that plugs in, and you can get three or four people to the curb on delivery day. The Aquaterra Benicia is the safest pick.
- Skip the 6-7 person Costco spas on 110V if you’ll soak with a full tub of people on high jets every night — 300 gallons on a household circuit reheats slowly. Budget for a 230V circuit, or look at our best 6-person hot tub and best hot tub under $5,000 picks.
- Buy elsewhere if you need delivery past the curb, want to move the spa later without losing the warranty, or only want a seasonal inflatable — Amazon typically carries Intex and SaluSpa year-round, while Costco’s inflatable shelf thins out after summer.
- Financing? Costco.com offers pay-over-time through Affirm on large online orders; compare it with the other options in our hot tub financing guide.
The bottom line
Costco’s hot tub aisle is really a plug-and-play hard-shell aisle: seven rotomolded spas from Aquaterra (Watkins) and Evolution (Strong Spas) between $2,999.99 and $4,599.99, plus a SaluSpa or two for the inflatable crowd. The Aquaterra Benicia is the best value and the best-rated of them, the Brighton is the family pick, and the Evolution Rockport carries the best warranty if you need seven seats. Just go in knowing that “Plug-n-Play” means about 1,000 watts of heat that pauses whenever the jets run on high, that delivery stops at the curb, and that the warranty stays at the address it’s delivered to. For running costs once it’s filled, see our hot tub running cost guide; for the wider plug-and-play field, start with our best plug-and-play hot tubs.