Jacuzzi J-245 vs J-345 hot tubs compared
Short answer
The Jacuzzi J-245 seats 7 with no lounger in 84 x 84 in; the J-345 seats 7 with no lounger in 84 x 84 in. The J-245 has 37 jets to the J-345's 41, as the maker counts them.
| Measure |  Jacuzzi J-245J-200 Collection |  J-345J-300 Collection |
|---|---|---|
| Lineup | ||
| Series | J-200 Collection | J-300 Collection |
| Size | ||
| Seats | 7 | 7 |
| Length | 84" | 84" |
| Width | 84" | 84" |
| Height | 36" | 36" |
| Water | 320 gal | 345 gal |
| Dry weight | 717 lb | 777 lb |
| Filled weightwater, no people | 3,386 lb | 3,654 lb |
| Jets and pumps | ||
| Jetsas the maker counts them | 37 | 41 |
| Jet pumps | 2 | 2 |
| Pump horsepoweras published | 2-Speed, 4.5 HP brake, 2.5 HP continuous, 56 Frame | Not published |
| Electrical | ||
| Voltage | 240V | 240V |
| Amperage | 40A: 26A; 50A: 36A; 60A: 45A | Not published |
| Breaker | 40, 50, 60 | 40A: 26A draw; 50A: 37A draw (factory setting); 60A: 48A draw |
| Heaterat 240V | 5.5 kW | 5.5 kW |
| Build and water care | ||
| Shell | Not published | acrylic |
| Cabinet | ProEndure™ synthetic | ProFinish™ cabinetry |
| Filter area | 50 sq ft | 60 sq ft |
| Ozone | Yes | Yes |
| UV | Yes | Yes |
| Warranty | ||
| Shell structure | 5 years | 10 years |
| Shell surface | 3 years | 7 years |
| Equipment | 3 years | 5 years |
| Plumbing | 3 years | 5 years |
| Cabinet | 1 year | 5 years |
Verdict: The J-345 suits buyers who want a longer shell warranty (10 years against 5 years). On the rest of the table the J-245 is tied or close, so sit in both before you choose.
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What is the difference between the Jacuzzi J-245 and J-345?
Both seat 7. They share one shell size, 84 x 84 x 36 in. The J-245 has 37 jets to the J-345's 41, as the maker counts them.
Both are Jacuzzi hot tubs, the J-245 from the J-200 Collection and the J-345 from the J-300 Collection. Every figure is the maker's own, with a dot that links the page or PDF it came from. Where the published specs differ:
Will the J-245 or the J-345 fit my space and deck?
The J-245 is 84 x 84 in, about 49 sq ft and 36 in tall; filled, it weighs 3,386 lb, about 69 lb per sq ft before anyone gets in. The J-345 is 84 x 84 in, about 49 sq ft and 36 in tall; filled, it weighs 3,654 lb, about 75 lb per sq ft before anyone gets in. Leave room around the tub for the cover lifter and the service panel, and have a builder check any deck for the filled weight plus people. See hot tub sizes, hot tub weight and what to put a hot tub on.
What electrical hookup do the J-245 and J-345 need?
The J-245 runs on 240V. The J-345 runs on 240V. The table lists amperage and breaker as each maker prints them. A licensed electrician sizes the circuit and the GFCI protection for the model you buy. See hot tub electrical requirements.
Do the J-245 and J-345 carry the same warranty?
Jacuzzi J-245: 5 years on the shell structure, 3 years on the shell surface, 3 years on the equipment, 3 years on the plumbing and 1 year on the cabinet.
Jacuzzi J-345: 10 years on the shell structure, 7 years on the shell surface, 5 years on the equipment, 5 years on the plumbing and 5 years on the cabinet.
Read the warranty card before you sign: labor after year one, travel charges, and whether coverage moves to a second owner. The hot tub warranty comparison lines up every brand.
Which costs less to run, the J-245 or the J-345?
The J-345, by 3 W on standby, about $0.40 a month. Standby is what a tub draws to hold its temperature with the cover on and nobody in it. California tests it the same way for every spa sold in the state, so it is the fairest running-cost figure we have.
The J-245 draws 183 W in California's standby test (filed at 310 gallons), about 134 kWh and $24.30 a month at the U.S. average rate. 48% of the 122 filed tubs its size draw more; their median is 181.5 W.
The J-345 draws 180 W in California's standby test (filed at 345 gallons), about 131 kWh and $23.90 a month at the U.S. average rate. 69% of the 131 filed tubs its size draw more; their median is 197 W.
Costs use the U.S. average residential rate of 18.19¢ a kWh (January to July 2026, EIA). Your own rate, climate and how often you use the jets change the bill. Hot tub running cost works it out by state, and measured standby watts lists every filed model.
What to check in the showroom
- Sit in both, dry is fine, in the seat you would use most. On a running display tub, feel the jets with the back of your hand. Seat depth and where the jets land matter more than the count.
- Climb in and out: step height and the lounger's length suit some bodies and not others.
- Ask for each model's California Energy Commission listing and the warranty card.
The full spec sheets: Jacuzzi J-245 hot tub and Jacuzzi J-345 hot tub. The series: Jacuzzi J-300 Collection.
Other model comparisons: Jacuzzi J-345 vs J-365.
Still deciding? Get the price range on both.
- Jacuzzi J-245Price on request
- Jacuzzi J-345Price on request
Free price range, then one dealer.
Common questions
What is the difference between the Jacuzzi J-245 and J-345?
Both seat 7. They share one shell size, 84 x 84 x 36 in. The J-245 has 37 jets to the J-345's 41, as the maker counts them. The table lists every published figure side by side.
Which is bigger, the J-245 or the J-345?
They take the same floor space: 84 x 84 in, about 49 sq ft each. The J-245 holds 320 gallons and the J-345 345.
Which costs less to run, the J-245 or the J-345?
The J-345: 180 W on standby against 183 W in California's tests, about $23.90 against $24.30 a month at the U.S. average of 18.19¢ a kWh (EIA, January to July 2026). Heating fresh water and running the jets add to that.
Do the J-245 and J-345 have the same warranty?
No. Shell structure: 5 years on the J-245, 10 years on the J-345. Shell surface: 3 years on the J-245, 7 years on the J-345. Equipment: 3 years on the J-245, 5 years on the J-345. Plumbing: 3 years on the J-245, 5 years on the J-345. Cabinet: 1 year on the J-245, 5 years on the J-345. Read the warranty card for labor and transfer terms.
Sources
7
- Jacuzzi J-245 product pagemaker's specifications
- Jacuzzi J-245 specification sourcesize, jets and electrical
- Jacuzzi warrantyJ-245 warranty terms
- Jacuzzi J-345 product pagemaker's specifications
- Jacuzzi J-345 specification sourcesize, jets and electrical
- California Energy Commission appliance database (spas)standby watts
- EIA Electric Power Monthly, Table 5.6.BU.S. average residential rate, 18.19¢ a kWh, January to July 2026