Jacuzzi J-300 Collection

Short answer

The J-300 Collection has 8 hot tubs, from the 3-seat J-315 to the 7-seat J-385. They hold 210 to 460 gallons.

Updated October 2026By the HotTubFinder research desk

Models

Seats

3-7

Jets

23-52

Build checks

2 of 8

Jacuzzi

Every model Jacuzzi sells in the J-300 Collection, smallest to largest. Seats, size, jets and pumps are from Jacuzzi’s own spec pages; each figure's dot links its source.

Jacuzzi J-325 from above — Size is length x width in inches, with the height under it. Pump hp is continuous-duty horsepower ("est." = converted from a peak rating). Shell warranty is the structure term in years. A dash means the maker does not publish the figure.

The 8 hot tubs in the J-300 Collection

Jacuzzi J-315	3	66 x 7631.75 high	210	23	1	1.5	1	10
Jacuzzi J-325	5	84 x 7633.5 high	335	23	1	1.5	0	10
Jacuzzi J-335	6	84 x 8436 high	350	42	2	5	1	10
Jacuzzi J-355	6	84 x 9137.5 high	360	44	2	5	1	10
Jacuzzi J-375	6	91 x 9137.5 high	445	52	2	5	1	10
Jacuzzi J-345	7	84 x 8436 high	345	41	2	5	0	10
Jacuzzi J-365	7	84 x 9137.5 high	395	46	2	5	0	10
Jacuzzi J-385	7	91 x 9137.5 high	460	51	2	5	0	10

What sets the J-300 Collection apart?

Sold on ergonomic seating and well-placed PowerPro jets, with eight sizes from a 3-seat lounge model to 7-seat open layouts.

Circulation pump on every model. All J-300 models have a circulation pump; on the J-335 to J-365 it's an 8-hour pump.
HydroSoothe pillow. A jetted, no-splash neck pillow with its own flow valve, on the J-335 through J-385.
Upgrade path to True Water. The nanobubble True Water system is an option on J-300 models, but it must be ordered together with SmartTub.
Cold-weather package. An optional extreme-cold package adds SmartSeal heat-reflecting insulation and an upgraded cover.

What to watch

Audio is optional. The BLUEWAVE stereo (4 speakers and a subwoofer on J-335 to J-365) is an extra-cost option across the J-300.
SmartTub listed as both standard and optional. The 2026 J-335 to J-365 spec sheets list the SmartTub module as standard, while the J-375 and J-385 product pages and manual call it optional. Confirm with the dealer.
Small models trimmed. The J-315 and J-325 run a single 1-speed pump and do not get lighted cup holders.

How do the 8 models differ?

Seating runs from 3 in the J-315 to 7 in the J-385. J-315, J-335, J-355 and J-375 have a lounger; J-325, J-345, J-365 and J-385 are open seating. J-315 and J-325 run one jet pump; J-335, J-355, J-375, J-345, J-365 and J-385 run two jet pumps.

Jet counts run from 23 (J-315) to 52 (J-375). More jets on the same pumps split the same flow across more nozzles, so sit in the seats you would use and run the jets before you choose by the count.

How is Jacuzzi built?

Jacuzzi passes 2 of our 8 build checks. They apply to the whole brand, so they hold for every model above. The evidence for each is on the Jacuzzi brand page.

How it’s built

2 of 8 pass

Eight things that decide whether it lasts. Tap any for the detail.

Self-supporting shellJacuzzi doesn't publish this. Ask the dealerNot published

The shell is acrylic over a bonded vapor barrier and a resin composite backing, so it is reinforced. Around it sits a frame of sixteen uprights, an ABS base pan and sixteen under-pan supports, and several models use removable foam panels rather than poured foam. Jacuzzi doesn't say which part carries the weight of the water.

Applies to: All models; structural detail comes from the J-445 (J-400 series) frame drawing

What this means, and how to check it →jacuzzi.com ↗jacuzzipartners.com ↗

Clamped plumbingMostly barbed flex hose with clamps, but some glued rigid PVCPartly

The parts catalog stocks barbed fittings, flexible pipe and hose clamps in every size, and at least one jet assembly ships with a clamp in it. It also stocks rigid Schedule 40 pipe and glue-on couplings. Some repairs will mean cutting and gluing instead of loosening a clamp.

Applies to: All models, 2016 to 2026 model years (the span of the parts catalog)

What this means, and how to check it →jacuzzipartners.com ↗jacuzzipartners.com ↗

Manifold-fed jetsJets feed from manifolds, each jet on its own portYes

The catalog stocks water manifolds from 2 up to 16 ports and separate air manifolds up to 12, all barbed. A blocked or leaking jet does not starve the ones behind it. No series-fed jet plumbing appears anywhere in the parts list.

Applies to: All models, 2016 to 2026 model years (the span of the parts catalog)

What this means, and how to check it →jacuzzipartners.com ↗jacuzzipartners.com ↗

Standard partsBalboa and Waterway parts inside, but the control boards are lockedPartly

Pumps and packs come from Balboa, Gecko, Waterway, Laing and Grundfos, and the full parts catalog with part numbers is public. Boards built since April 2018 are encrypted and need a dealer tool to reprogram. Fitting non-Jacuzzi parts voids the warranty.

Applies to: All models; the encryption lock applies to tubs built from about April 2018 on

What this means, and how to check it →jacuzzipartners.com ↗links.imagerelay.com ↗

Compression-fitted jetsNut-held jet bodies through 2024; newer tubs switch to push-in grommetsPartly

Jacuzzi's own parts catalogue lists a nut and O-ring for every main jet back through 2024. From 2025 on, most jets move to a grommet-style back that presses into a rubber ring with no nut. Neither type is glued.

Applies to: All series

What this means, and how to check it →jacuzzipartners.com ↗jacuzzipartners.com ↗

Adjustable jetsSome jet faces rotate for flow; other controls work by zonePartly

The manual says flow to certain jets can be raised or lowered by turning the face, and to leave at least six open. Other jets are fixed direction. Air toggles and diverters shift whole groups, and the 2026 J5 has no control for an individual pump.

Applies to: All models; the pump behavior described applies only to the J5 Collection

What this means, and how to check it →links.imagerelay.com ↗links.imagerelay.com ↗

Service networkDealer-serviced, with part numbers published openlyYes

Manuals send owners to their dealer for fault codes, water care and winterizing, and the warranty requires dealer or factory service. Independents can still buy parts, and service parts carry 180 days. Dealer count in your area is not published, so check coverage locally.

Applies to: All models, North America

What this means, and how to check it →links.imagerelay.com ↗links.imagerelay.com ↗

American made?Built in Mexico and near Pordenone, ItalyPartly

Mexico: J-200 to J-500 hot tubs built July 2021 to December 2022 were made in Mexico, per a 2023 federal recall. Near Pordenone, Italy: Main European plant, per owner Investindustrial.

Applies to: All models; the Chino address is for the North American hot tub operation

What this means, and how to check it →cpsc.gov ↗investindustrial.com ↗

Other Jacuzzi hot tubs

Jacuzzi also sells J-200 Collection (5), J4 Collection (3) and J5 Collection (3). Every model is on the Jacuzzi hot tubs page.

Side by side with a rival: Hot Spring vs Jacuzzi · Jacuzzi vs Sundance Spas.

Sources

Jacuzzi J-315 product page jacuzzi.com · checked September 2026seats, size, jets and pumps
Jacuzzi J-325 product page jacuzzi.com · checked September 2026seats, size, jets and pumps
Jacuzzi J-335 product page jacuzzi.com · checked September 2026seats, size, jets and pumps
Jacuzzi J-355 product page jacuzzi.com · checked September 2026seats, size, jets and pumps
Jacuzzi J-375 product page jacuzzi.com · checked September 2026seats, size, jets and pumps
Jacuzzi J-345 product page jacuzzi.com · checked September 2026seats, size, jets and pumps
Jacuzzi J-365 product page jacuzzi.com · checked September 2026seats, size, jets and pumps
Jacuzzi J-385 product page jacuzzi.com · checked September 2026seats, size, jets and pumps
J-300 Collection limited warranty jacuzzi.comwarranty terms