Seats 7 Adults

7'5" x 7'5" x 38"

52 Jets

FreshWater™ Salt System

If you’re looking for a spa that comfortably accommodates friends and family, seating seven adults, the Niagara® hot tub is a crowd pleaser. Its power and size makes this hot tub model an exceptional performer and perfect for backyard entertaining.

STYLE SELECTOR | *Click the swatch icons below to view color combinations

Avante™ Cabinet Colors





Arctic White


White Pearl

Tuscan Sun

Midnight Canyon


Arctic White


White Pearl

Tuscan Sun

Midnight Canyon


Arctic White

White Pearl

Tuscan Sun

Midnight Canyon

(Actual colors may differ from on screen representation. Please see your local dealer to verify).

star rating

“We have now had it two months and could not be happier. Its great when it is snowing.”

Jack | Farmington, UT

star rating

“I use my spa a minimum of 3 out of every 4 nights and all I can say is that I’ve never slept as good as I do now. Thanks Caldera.”

Dave61 | Colorado Springs, CO

Niagara Jet Systems

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Seat or lounge (varies by model) for neck, shoulder and middle back massage.

A contoured pillow cradles your head while specialized, above-the-water-line jets focus on neck and shoulders.

Multiple jets focus on large muscles in your back. Select models work on wrists and calves.

A unique jet configuration relieves tension and pain in your back’s lumbar region.

These jets provide a deep, penetrating massage to thighs, knees, calves and feet (Two in most Utopia® models).

In Niagara, Geneva and Cantabria these jets work an often overlooked stress point and enhance movement there.

In Utopia® models they work on muscles in the lower leg.

FreshWater Salt System

Salt System

Every Utopia Series spa is ready to use with our simple and intuitive FreshWater Salt System that generates chlorine from salt, keeping water clean and fresh up to three times longer than any other system.

Avante Cabinetry


Our Utopia Series spas feature the beautiful and multi-dimensional Avante all-climate cabinetry, a durable material that will withstand harsh weather elements. Available in Sand, Slate and Brownstone.

Advent Touchscreen Control

Touchscreen Control

Your daily hydrotherapy experience is easily managed with our intuitive Advent control panel which gives you complete control over water temperature, jet systems and ambient lighting effects.

360° View

Drag the toggle left or right to see a detailed, 360-degree view of the spa seating, jet placement, spa shell and cabinet.

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Tech Specs


7 Adults


7'5" x 7'5" x 38" / 226cm x 226cm x 97cm


400 gallons / 1525 liters


995 lbs. / 450 kg


5555 lbs. / 2535 kg


52 Total Jets


2 Atlas® Neck Massage, 38 Euro jets, 4 VersaSage® jets, 2 AdaptaFlo® jets, 4 Euro-Pulse® jets, 2 OrbiSsage® jets and 2 Euphoria® jets


FreshWater® Salt System Ready




2 ReliaFlo® Pumps; 1 Dual-Speed
2.5 HP (5.2BHP) & 1 Single-Speed 2.5HP (5.2 BHP)


Advent® LCD Touchscreen Control with Auxiliary panel


EnergyPro® Circulation Pump


EnergyPro® Titanium Heater (4,000 Watts)


230v/50 amp


GFCI Sub-panel (50 amp) included


100 sq. ft. filter


(Optional) Corona Discharge Ozone


1 Acquarella® Waterfall with LED lighting


SpaGlo® Multi-Zone LED Lighting
including 12 Points-of-Interior Lights and 4 Corner Exterior Lights


Fully-insulated with FiberCor® material, 2 lb. density, CEC-compliant


Large acrylic logo plate with On/Ready indicator light


ABS Base Pan


3.5” to 2.5” tapered, 2 lb.-density foam core


White Pearl, Platinum, Tuscan Sun, Arctic White, Midnight Canyon


Avante Cabinet


Brownstone, Slate, Sand


(Optional) ProLift® II, ProLift® III, or ProLift® IV


Chocolate, Slate, Taupe


Curved front skirt


(Optional) Wireless Bluetooth®Sound System, Wireless In-home Dock, Wireless TV


(Optional) Avante Step in Brownstone, Slate, & Sand





Niagara Reviews

Niagara is rated 4.6 out of 5 by 98.
Rated 5 out of 5 by from Winter nights in comfort It’s such a nice way to unwind on a winter evening. Head out to the spa while snow is falling and just look up at the stars. Also it is a nice time to just chat with the family while we are all in the same place.
Date published: 2019-07-03
Rated 5 out of 5 by from What a life-changing experience! I'll admit it. I don't like being wet. At least I didn't. We just moved into a house in September of last year and my wife really wanted a body of water we could call our own. When we got quotes for an inground pool, the numbers we saw were astonishing (6-figures). This was not for us! So we decided to get a spa instead. I've never been a 'hot tub' guy, but boy has my life turned around since we got one. There is so much room in the Niagara we could easily accomodate 4 more adults comfortably. The jets are powerful and unlock all of the tight spots in my back. I love getting in this thing when I get home from work after a 2.5 hour commute. When I work from home, I love finding breaks in my schedule to make an excuse to hop in for 15-20 minutes. It has been amazing. And it's had an unexpected cost savings benefit too -- my wife and I are struggling to find a vacation spot that makes us want to leave our backyard oasis. Our purchase of the Caldera Niagara has been life-changing. All in all, the spa has exceeded our expectations: maintenance is simple, it fills and heats up quickly, it's easy to clean, the insulation is SOLID. Only a few minor issues with the quality of some of the collars on the jets. I've had 4 break and come off, but it doesn't negatively impact the performance of the spa. If you're looking at these reviews and wondering if you should pull the trigger, do it. Don't wait. If you're lucky enough to be in the SF Bay Area, check out Blackthrone Spas in Salinas. They have a tremendous sales team that will help you find the right spa and get a great deal and will continue to support you with a friendly smile after your purchase!
Date published: 2019-07-03
Rated 5 out of 5 by from Great purchase Really enjoy our hot tub. We use it just about every day and easy to keep up with.
Date published: 2019-06-25
Rated 5 out of 5 by from Love our Caldera spa We owned a Sundance for 18 yrs and we thought it would be hard to find a comparable spa but after some research we decided to go with the Caldera Niagara. We love our spa, we use it 4-5 times a week. The jets are strong, great for neck and back. We highly recommend buy a Caldera Spa.
Date published: 2019-06-20
Rated 5 out of 5 by from It was a very Merry Christmas (with a family gift of a Caldera spa) My kids are teens and not in need of any more phones, computers, or clothes. So...I decided to get us all a family gift of a spa. I tried several different kinds in the showroom, and the Caldera Niagara was my favorite. Just today, three months later, I was sitting in the spa grateful that I made the decision I did. We love our spa! And now my kids have their friends over to hang out in our Caldera.
Date published: 2019-03-03
Rated 5 out of 5 by from Great investment! I just Can’t say enough about our buying experience! The sales person was wonderful and made us feel like family. We made several visits before making the final decision and she never once acted like we were being a problem! Her patience and understanding helped us to be completely comfortable with our final choice. We are enjoying our spa and love all of the options it provides. And I am Comfortable that I could Walk into the show room today and be receiving with open arms and assisted in any way possible!!!
Date published: 2019-01-30
Rated 5 out of 5 by from So WOWED by this hot tub I am a first time hot tub owner- I am so WOWed by this product! It is so easy to use and to enjoy.The water stays at a constant temp and the ease of adding chemicals is superior to none! We use this tub 1-2x a day. Having a cup of coffee in the hot tub in the morning is the best way to start a day! Thanks Caldera. Lifetime Owner to be!
Date published: 2019-01-05
Rated 5 out of 5 by from Excellent Spa. Been using it a couple months now. Super happy with it. Great spa! Seats 7 but one seat is a cool down seat and 2 other seats just have a low pressure lower back jet (single). 4 seats are 'action packed' and have a ton of jets. Spa is roomy enough for 4 adults to all be in a high powered seat (in the corners) without having to bump into each other. The lights and jets are really good. It has a waterfall/fountain feature as well that also lights up but it's really only good in my opinion for show. We don't actually keep it on when we are in the hot tub. The heating function on it is stellar! 103 is as hot as we have gotten it and you can't really stay in very long with it that hot. We usually keep ours at 100 or 101. That seems to be the right temperature where it's comfortable and you can stay in (a couple hours even!). The jet valves on this thing are a bit confusing at first until you really get the hang of what controls what. Additionally some of the jets in the corners can be turned on/off by rotating the actual jet itself. Water care is pretty painless as long as you use the Frog cartridge system that is built in. I bought mine with the full sound system with sub woofer. The quality of the speakers is just 'ok' but I guess when have to have water proof speakers or at least heavy splash proof speakers that you have to sacrifice a bit in quality. Still for $1000 (what I paid for the speaker/sub woofer system) I would have expected better sound quality. Sound actually can drop out on you if the volume on your phone and volume on your spa speaker system are both at max. That super annoys me. Other than that, I would recommend this spa. We are in it almost every night and it's really quite wonderful .
Date published: 2018-10-14

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