Bullfrog X7 vs X8 hot tubs compared
Short answer
The Bullfrog X7 seats 8 with no lounger in 88 x 88 in; the X8 seats 8 with no lounger in 94 x 94 in. The X7 has 43 jets to the X8's 50, as the maker counts them. Both are $8,895–$15,195 (maker's X Series starting prices, Oct 2026).
| Measure |  Bullfrog X7X Series |  X8X Series |
|---|---|---|
| Lineup | ||
| Series | X Series | X Series |
| Priceas labeled under each figure | $8,895–$15,195X Series starting prices (MSRP), Oct 2026 | $8,895–$15,195X Series starting prices (MSRP), Oct 2026 |
| Size | ||
| Seats | 8 | 8 |
| Length | 88" | 94" |
| Width | 88" | 94" |
| Height | 36" | 38" |
| Water | 395 gal | 486 gal |
| Dry weight | 661 lb | 758 lb |
| Filled weightwater, no people | 4,924 lb | 5,860 lb |
| Jets and pumps | ||
| Jetsas the maker counts them | 43 | 50 |
| Jet pumps | 2 | 2 |
| Pump horsepoweras published | 2.5 HP (240V) per jet pump | 2.5 HP (240V) per jet pump |
| Neck and shoulder jets | Advanced Neck and Shoulder Therapy | Advanced Neck and Shoulder Therapy |
| Electrical | ||
| Voltage | 240V | 240V |
| Amperage | 240V~30/50A | 240V~30/50A |
| Breaker | 50A (30A conversion option available) | 50A (30A conversion option available) |
| Heaterat 240V | 4 kW | 4 kW |
| Build and water care | ||
| Insulation | High-density full-foam (100% closed-cell) | High-density full-foam (100% closed-cell) |
| Shell | Acrylic | Acrylic |
| Cabinet | Wood-free composite cabinet panels (cabinet corners, door and… | Wood-free composite cabinet panels (cabinet corners, door and… |
| Built in | United States | United States |
| Warranty | ||
| Shell structure | 5 years | 5 years |
| Shell surface | 3 years | 3 years |
| Equipment | 3 years | 3 years |
| Plumbing | 3 years | 3 years |
| Cabinet | 3 years | 3 years |
Verdict: The Bullfrog X7 suits buyers who want a smaller footprint (88 x 88 in), a lighter load on a deck (4,924 lb filled) and less water to heat and treat (395 gal). The X8 suits buyers who want more jets (50 against 43) and a roomier shell (94 x 94 in).
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What is the difference between the Bullfrog X7 and X8?
Both seat 8. The X7 measures 88 x 88 x 36 in and the X8 94 x 94 x 38 in. The X7 has 43 jets to the X8's 50, as the maker counts them. Both are $8,895–$15,195 (maker's X Series starting prices, Oct 2026).
Both are Bullfrog Spas hot tubs from the X Series. 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 X7 or the X8 fit my space and deck?
The X7 is 88 x 88 in, about 54 sq ft and 36 in tall; filled, it weighs 4,924 lb, about 92 lb per sq ft before anyone gets in. The X8 is 94 x 94 in, about 61 sq ft and 38 in tall; filled, it weighs 5,860 lb, about 96 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 X7 and X8 need?
The X7 runs on 240V. The X8 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 X7 and X8 carry the same warranty?
Bullfrog X7: 5 years on the shell structure, 3 years on the shell surface, 3 years on the equipment, 3 years on the plumbing and 3 years on the cabinet.
Bullfrog X8: 5 years on the shell structure, 3 years on the shell surface, 3 years on the equipment, 3 years on the plumbing and 3 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.
What do the X7 and X8 sell for?
Bullfrog Spas posts only a series range for the X7 and X8: $8,895–$15,195 (maker's X Series starting prices, Oct 2026). Delivery, the pad, the electrician and the cover lifter are extra. Each model's price and where it comes from: Bullfrog X7 price and Bullfrog X8 price.
Which costs less to run, the X7 or the X8?
The X7, by 84 W on standby, about $11.15 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 X7 draws 177 W in California's standby test (filed at 373 gallons), about 129 kWh and $23.50 a month at the U.S. average rate. 76% of the 126 filed tubs its size draw more; their median is 203 W.
The X8 draws 261 W in California's standby test (filed at 454 gallons), about 191 kWh and $34.66 a month at the U.S. average rate. 8% of the 89 filed tubs its size draw more; their median is 223 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: Bullfrog X7 hot tub and Bullfrog X8 hot tub.
Other model comparisons: Bullfrog A7 vs X7 and Bullfrog A8 vs X8.
Still deciding? Get the price range on both.
- Bullfrog X7$8,895–$15,195X Series starting prices (MSRP)
- Bullfrog X8$8,895–$15,195X Series starting prices (MSRP)
Free price range, then one dealer.
Common questions
What is the difference between the Bullfrog X7 and X8?
Both seat 8. The X7 measures 88 x 88 x 36 in and the X8 94 x 94 x 38 in. The X7 has 43 jets to the X8's 50, as the maker counts them. Both are $8,895–$15,195 (maker's X Series starting prices, Oct 2026). The table lists every published figure side by side.
Which is bigger, the X7 or the X8?
The X8: 94 x 94 in, about 61 sq ft, against 88 x 88 in, about 54 sq ft for the X7. The X7 holds 395 gallons and the X8 486.
Which costs less to run, the X7 or the X8?
The X7: 177 W on standby against 261 W in California's tests, about $23.50 against $34.66 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 X7 and X8 have the same warranty?
Yes, on the terms the maker publishes: shell structure 5 years, shell surface 3 years, equipment 3 years, plumbing 3 years and cabinet 3 years.
How much do the X7 and X8 cost?
Bullfrog Spas posts only a series range for the X7 and X8: $8,895–$15,195 (maker's X Series starting prices, Oct 2026). Delivery, the pad and the electrician are extra.
Sources
7
- Bullfrog Spas X7 product pagemaker's specifications
- Bullfrog Spas X7 specification sourcesize, jets and electrical
- Bullfrog Spas warrantyX7 warranty terms
- Bullfrog Spas X8 product pagemaker's specifications
- Bullfrog Spas X8 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