Guides / Hot tubs, saunas and plunges · Updated
Hot tub dimensions
Outside of the cabinet, off each maker's spec sheet. Length is the longer side.
Short answer
A 2 to 3 person hot tub is about 6 ft 6 in to 7 ft 0 in by 5 ft 5 in to 6 ft 6 in. A 4 to 6 person tub runs 6 ft 8 in to 7 ft 10 in long, and a 7 person or bigger 8 ft 4 in to 9 ft 2 in. Most stand 2 ft 6 in to 3 ft 4 in tall.
2 to 3 person hot tubs
| Hot tub | L x W x H | Water | Dry | Full, with people |
|---|---|---|---|---|
| Caldera Kauai 3 seats, 230 V 50 A | 84 x 65 x 29.5 in 7 ft 0 in x 5 ft 5 in | 230 gal | 740 lb | 3,213 lb 85 psf |
| Jacuzzi J-215 3 seats, 120 V 15 A plug-in, or 240 V 30 or 40 A | 80 x 69 x 33 in 6 ft 8 in x 5 ft 9 in | 205 gal | 517 lb | 2,782 lb 73 psf |
| Sundance Alicia 3 seats, 120 V 15 A plug-in, or 240 V 30 or 40 A | 80 x 69 x 33 in 6 ft 8 in x 5 ft 9 in | 210 gal | 583 lb | 2,889 lb 75 psf |
| Hot Spring Jetsetter 3 seats, 115 V 20 A plug-in, or 230 V 50 A | 84 x 68 x 33 in 7 ft 0 in x 5 ft 8 in | 245 gal | 500 lb | 3,098 lb 78 psf |
| Master Spas Twilight TS 240X 3 seats, 240 V 50 A | 78 x 78 x 34 in 6 ft 6 in x 6 ft 6 in | 205 gal | 715 lb | 2,980 lb 71 psf |
4 to 6 person hot tubs
| Hot tub | L x W x H | Water | Dry | Full, with people |
|---|---|---|---|---|
| Sundance Prado 5 seats, 120 V 15 A plug-in, or 240 V 30 or 40 A | 80 x 80 x 33 in 6 ft 8 in x 6 ft 8 in | 275 gal | 603 lb | 3,822 lb 86 psf |
| Hot Spring Prodigy 5 seats, 230 V 50 A | 84 x 78 x 33 in 7 ft 0 in x 6 ft 6 in | 270 gal | 575 lb | 3,752 lb 82 psf |
| Bullfrog A6L 6 seats, 240 V 30 or 50 A | 88 x 80 x 34 in 7 ft 4 in x 6 ft 8 in | 311 gal | 803 lb | 4,507 lb 92 psf |
| Caldera Geneva 6 seats, 230 V 50 A | 89 x 89 x 38 in 7 ft 5 in x 7 ft 5 in | 410 gal | 1,000 lb | 5,529 lb 101 psf |
| Master Spas Twilight TS 8.2 6 seats, 240 V 50 A | 94 x 94 x 38 in 7 ft 10 in x 7 ft 10 in | 380 gal | 1,065 lb | 5,344 lb 87 psf |
7 person and bigger
| Hot tub | L x W x H | Water | Dry | Full, with people |
|---|---|---|---|---|
| Hot Spring Grandee 7 seats, 230 V 50 A | 100 x 91 x 38 in 8 ft 4 in x 7 ft 7 in | 455 gal | 790 lb | 5,880 lb 93 psf |
| Sundance Aspen 8 seats, 240 V 50 or 60 A | 110 x 89 x 40 in 9 ft 2 in x 7 ft 5 in | 505 gal | 1,240 lb | 6,932 lb 102 psf |
| Caldera Cantabria 8 seats, 230 V 50 A or 70 A | 108 x 91 x 38 in 9 ft 0 in x 7 ft 7 in | 615 gal | 1,310 lb | 7,919 lb 116 psf |
| Master Spas Legend LSX 900 8 seats, 240 V 50 A | 108 x 94 x 38 in 9 ft 0 in x 7 ft 10 in | 490 gal | 1,485 lb | 7,052 lb 100 psf |
| Bullfrog M9 10 seats | 110 x 94 x 38 in 9 ft 2 in x 7 ft 10 in | 566 gal | 1,209 lb | 7,779 lb 108 psf |
Full weight is the dry weight, 8.34 lb for each gallon and 185 lb for each seat, the same way the hot tub calculator counts it. Makers print their own "filled weight", but some include people and some don't, so we don't mix them. Click a tub to open the calculator with it filled in. Bullfrog's dry weights include the cover. Not in the tables: the Jacuzzi J-385 (91 x 91 x 37.5 in, 460 gal, 850 lb dry), which Jacuzzi lists without a seat count.
Can it go on a deck?
A normal deck is built for 50 lb a square foot. All 15 tubs here go over that full of water and people, most of them by half again or more. Plan on a concrete pad at ground level, or a deck an engineer designed for the tub. The hot tub calculator checks yours, and how much a hot tub weighs shows the math. A concrete pad calculator sizes the slab.
Room around it, and getting it in
Measure the gate and any tight corner on the way in. Delivery crews tip a tub on its side on a cart, so the narrowest point has to clear the tub's height (2 ft 6 in to 3 ft 4 in here) plus the cart, not its width. Leave room on the side with the equipment door so the heater and pump can be reached.
Power varies more than size: small tubs often plug into a 120 V outlet, and the rest need a 240 V circuit of 30 to 70 A. The hot tub calculator checks whether your panel can take it.