HOT TUBS OF TENNESSEE
Caldera® Spas
Caldera® brings award-winning comfort and Circuit Therapy® massage in the flagship Utopia®, the versatile Paradise® and the value-minded Vacanza® series, plus the plug-and-play Fantasy™ series. You can buy any of them at all six of our showrooms.
Explore the Caldera Collections
Four series, from the flagship Utopia to the plug-and-play Fantasy. Find the one that fits your backyard, your budget, and your routine.
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FreshWater® Salt System and FreshWater® IQ
Salt-ready Caldera® spas turn a small amount of dissolved salt into chlorine automatically, so you add fewer chemicals and spend less time on maintenance.
FreshWater® Salt System
A titanium cartridge converts dissolved salt into chlorine as the water circulates, and the cartridge is owner-replaceable about every four months. Included on the Utopia® collection, and salt-ready on Paradise® and Vacanza®. Learn more about the Salt System.
FreshWater® IQ
FreshWater IQ adds hourly water testing and one-touch dosing on top of the salt system. The spa tests itself, shows you what it needs on the control panel or app, and corrects pH at a tap. Available on 2024-and-newer Utopia® and Paradise® models. Learn more about FreshWater IQ.
What about the Fantasy™ series?
Plug-and-play Fantasy™ spas use FROG® cartridge sanitizing instead: pre-filled cartridges that keep chlorine steady without daily measuring.
Can You Plug a Hot Tub Into a Regular Outlet?
Yes. The Fantasy™ series comes with a GFCI power cord that plugs into a 115V outlet, with no 230V hardwiring needed: fill it, plug it in and enjoy. It’s the easiest way to get into a quality Caldera spa.
The trade-off is that the jets and heater share the circuit, so on a cold night with the jets wide open the water can cool a touch. Full-size Caldera spas run on a dedicated 230V circuit and hold full heat with everything running. In Tennessee you’ll soak year-round, so if long winter soaks with strong jets are the goal, a 230V model is worth the electrical work.
110V vs. 240V, Explained
Frequently Asked Questions
Here are answers to the hot tub questions we hear most. The Learning Center covers each one in depth.
How much does a hot tub cost?
Published price ranges run by tier, and our cost guide walks them with real numbers. We don’t price a specific model sight-unseen because your real cost depends on the model, the features you choose, and what your site needs. Get pricing and we’ll quote your exact setup.
Will it cost a fortune to heat in winter?
Cold climates cost more, but FiberCor® insulation (full-foam on Fantasy™), a sealed base pan, recycled heat, and a tight cover keep it efficient. The cover is the biggest daily factor.
Can I plug a hot tub into a regular outlet?
Yes. The Fantasy™ series comes with a GFCI power cord that plugs into a standard 115V outlet. Full-size Caldera spas run on a dedicated 230V circuit installed by a licensed electrician. Our 110V vs. 240V guide walks the trade-offs.
What size hot tub do I need?
2 to 3 seats fits couples and small spaces, 4 to 5 fits most families, and 6 to 8 is built for entertaining. Bigger uses more energy and chemicals, so choose based on a normal week.
