Bullfrog vs Caldera hot tubs
Best known for: swappable JetPak massage seats (Bullfrog) and Atlas neck and Euphoria leg jets (Caldera). Bullfrog lists 25 hot tubs for 3 to 10 people, Caldera 23 hot tubs for 2 to 8 people. Published prices start at $8,395 for Bullfrog and $5,499 for Caldera.
Bullfrog
Shown: M6
The hot tub you customize seat by seat: pick from up to 16 JetPak massage backs when you buy, move or upgrade them any time, all on a wood-free, Utah-built frame with a lifetime warranty.
From $8,395
Get the price range
Caldera
Shown: Florence
Every seat is designed as a massage station, the top Utopia line comes with salt water and hourly water testing, and you get Watkins engineering for less than a Hot Spring.
From $5,499
Get the price rangeHow they differ
- Swappable JetPak massage seats
- Built in Utah
- Less plumbing, fewer leaks
- Atlas neck and Euphoria leg jets
- Insulation you can pull out
- Every seat a massage station
- No Self-supporting shell
- Not published Clamped plumbing
- Partly Manifold-fed jets
- Partly Standard parts
- Partly Self-supporting shell
- Partly Clamped plumbing
- Not published Manifold-fed jets
- Partly Standard parts
- Swappable JetPaks
- Owners praise the massage
- Comfortable seating
- Insulation easy to service
- JetPak seals that leak or buzz
- Service hinges on the local dealer
- No-heat from circulation faults
- Salt cartridges wearing out fast
Which lines compete? Tier by tier.
Each maker sorts its own series from entry to flagship; we group them the same way so you can price like against like.
- Calm3 models · 6–7 seats · from $8,395
- Fantasy Series5 models · 2–5 seats · from $5,499
- X Series7 models · 3–8 seats · from $8,895
- Vacanza Series6 models · 2–7 seats · from $9,999
- A Series9 models · 3–9 seats · from $12,095
- STIL2 models · 4–6 seats · from $16,695
- Paradise Series6 models · 3–7 seats · from $13,999
- M Series4 models · 7–10 seats · from $24,695
- Utopia Series6 models · 3–8 seats · from $18,499
Which suits whom?
Bullfrog, if you want
- Swappable JetPak massage seats
- Room for 10
Caldera, if you want
- A lower starting price ($5,499 against $8,395)
- Atlas neck and Euphoria leg jets
- A tub that plugs into a regular outlet (8 models)
Fit decides more than any figure here. Sit in both in the seat you would use most (dry is fine), feel the jets on a running display tub with the back of your hand, and read both warranty cards before you sign.
What’s a good deal on either?
Pick a brand. We send you the price range, then connect you with one dealer near you for it.
The details
Keeping it hot: standby power and cost2
Standby is what a tub draws to hold its heat with the cover on and nobody in it. California tests it for every spa sold in the state. At the US average 18.19¢ per kWh (January to July 2026), the middle Bullfrog model costs about $27 a month to keep hot and the middle Caldera about $26 a month. In watts: 207 W (23 filings) and 199.5 W (18). Your bill also depends on your climate, how hot you keep it and how often the cover is off.
| Seats | Bullfrog | Caldera |
|---|---|---|
| 3 | 157.5 W | 152 W |
| 5 | 166 W | 195 W |
| 6 | 179.5 W | 198 W |
| 7 | 208.5 W | 214 W |
| 8 | 233 W | 307 W |
Complaint records2
Bullfrog. Better Business Bureau grade A, 31 complaints in three years. ConsumerAffairs 1.5 of 5 from 58 reviews. No U.S. safety recall found.
Caldera. Better Business Bureau grade C-, 18 complaints in three years. ConsumerAffairs 1.3 of 5 from 50 reviews. No U.S. safety recall found.
Complaint counts grow with the number of tubs a company sells; how it answers them tells you more than the count.
Who owns them2
What to ask in the showroom2
- Clamped plumbing: Bullfrog doesn't publish it. Ask: “Are the hoses on this model clamped at the barbs, or just glued?”
- Manifold-fed jets: Caldera doesn't publish it. Ask: “Does each jet here get its own hose from a manifold, or are they chained?”
Every figure side by side30
No manufacturer pays us. How we make money
Common questions
Is Bullfrog better than Caldera?
Neither is better for everyone. Bullfrog suits you if you want room for 10. Caldera suits you if you want a lower starting price ($5,499 against $8,395) and a tub that plugs into a regular outlet (8 models). Sit in both before you choose; dry is fine.
Which costs less, Bullfrog or Caldera?
Bullfrog: $8,395 to $30,395 (series starting prices, MSRP). Caldera: $5,499 to $29,499 (list prices, MSRP). What you pay depends on the model, options, delivery and the dealer, so ask each for a written, itemized quote.
Are Bullfrog and Caldera made by the same company?
No. Bullfrog is privately held; Caldera belongs to Masco Corporation.
Where are Bullfrog and Caldera hot tubs made?
Bullfrog builds in Bluffdale, Utah and Herriman, Utah. Caldera builds in Vista, California and Tijuana, Mexico.
Sources
10
- California Energy Commission appliance database (spas)standby watts for Bullfrog and Caldera models
- Bullfrog Spas warrantyA Series, M Series and STIL warranty terms
- Better Business Bureau: Bullfrog Spasrating and complaint count
- ConsumerAffairs: Bullfrog Spasowner rating
- Ownership record: Bullfrog SpasPrivately held
- Caldera Spas warrantyUtopia Series and Paradise Series warranty terms
- Better Business Bureau: Caldera Spasrating and complaint count
- ConsumerAffairs: Caldera Spasowner rating
- Ownership record: Caldera SpasMasco Corporation
- CPSC recallsrecall search