Choose a hot tub if your goal is relaxation, hydrotherapy, and a place to unwind with family or friends. Choose a swim spa if you want to swim or exercise at home and still have warm water to relax in. That is the core of it. A hot tub is built around seats and jets. A swim spa is built around a current you can swim against in place, with seating and jets added. The rest of the decision comes down to space, budget, and how you will actually use it week to week.
Here is how the two compare side by side, and a few questions that usually settle it.
Hot tub vs. swim spa at a glance
| Hot tub | Swim spa | |
|---|---|---|
| Main purpose | Relaxation, massage, and social soaking | Swimming and aquatic exercise, plus relaxation |
| Typical size | Seats 2 to 8 people | About 12 to 21 feet long, 4 to 5 feet deep |
| Typical price | About $4,000 for entry models to $20,000 and up for luxury spas | About $20,000 to $60,000 and up |
| Typical monthly energy cost | About $20 to $50 | About $60 to $150 and up |
| Electrical | Most need a 230V dedicated circuit; plug-and-play models use a standard 115V outlet | 230V dedicated circuit, typically 40 to 100 amps |
| Foundation | Flat, solid surface such as a concrete pad, pavers, or reinforced deck | Reinforced concrete pad, typically at least 6 inches thick |
| Expected lifespan | About 15 to 20 years for a quality spa | About 15 to 25 years or more |
Costs vary with model, electricity rates, site preparation, and how you use the water, so treat these as planning ranges rather than quotes.
When a hot tub is the better fit
A hot tub makes the most sense when your main goal is to relax. Warm water and well placed jets ease sore muscles, take the edge off a long day, and make it easier to wind down before bed. Hot tubs are also more social than most people expect. Six people facing each other in warm water is a different kind of evening than six people around a patio table.
They are also the easier fit for most yards and budgets. A hot tub has a much smaller footprint, costs less to buy and to run, and holds a few hundred gallons of water rather than more than a thousand. If you have a modest patio or side yard, a hot tub is often the only realistic choice, and there are compact models built for exactly that.
We carry Hot Spring hot tubs in sizes from 2 to 3 seat models for couples up to 6 to 8 seat models built for entertaining. If you are not sure where to start, our Find Your Perfect Hot Tub quiz narrows the field in a few minutes.
When a swim spa is the better fit
A swim spa makes sense when exercise is a big part of the reason you want water at home. It produces a continuous current that lets you swim in place, so you get a real workout without the length of a lap pool. It also works for aquatic exercise beyond swimming, such as water walking, resistance work, and rowing with the right accessories, and it does it at a fraction of the footprint and upkeep of an in ground pool. We compared that option in depth in Swim Spa vs. Traditional Pool.
Swim spas also suit households where different people want different things. A swimmer, a parent who wants to soak, and kids who want to play can all use the same unit. And because swim spas are fully insulated and heated, they are usable year round, which we covered in Can You Use a Swim Spa Year Round in Southern California?
We carry Endless Pools swim spas in three lines: the E-Series, X-Series, and R-Series, with sizes from 12 to 20 feet.
What about getting both in one? Single zone vs. dual zone swim spas
If you want to swim and soak but only have room for one unit, a dual zone swim spa is worth a look. A single zone swim spa combines swimming and hydrotherapy in one body of water at one temperature. A dual zone model has separate swim and hot tub sections with their own temperature controls, so the swim area can stay cooler for exercise while the spa side stays hot for soaking. If you plan to both work out and unwind, dual zone is the most flexible choice.
Four questions that usually settle it
- What will you do in the water most weeks? If the honest answer is “sit and relax,” a hot tub. If it is “swim or exercise,” a swim spa.
- How much space do you have? Measure the area, then add room for access, steps, and a cover lifter. A swim spa needs a long, level spot and a clear delivery path.
- What is your budget, including installation and running costs? A swim spa costs more up front, more to install, and more each month to heat. Plan for all three.
- Who else will use it? Couples and small families who want a nightly soak tend toward hot tubs. Active households and anyone who wants low impact exercise at home tend toward swim spas.
Common questions about hot tubs and swim spas
Can you use a swim spa as a hot tub?
Yes, to a degree. Swim spas include seating and jets, and you can warm the water up for soaking. If you want a true hot tub temperature while also swimming, a dual zone model with a separate spa section is the better choice.
Is a swim spa worth it compared to a hot tub?
It is if you will use the swim current regularly. A swim spa costs more to buy and run, so the value comes from replacing a gym session, a pool, or both. If you mostly want to relax, a hot tub gives you that for less money and space.
How much more does a swim spa cost to run than a hot tub?
As a rough guide, a hot tub runs about $20 to $50 a month in energy and a swim spa about $60 to $150 or more. The difference comes from water volume. Electricity rates, insulation, your cover, and how you use it all change the number.
Do swim spas and hot tubs need different foundations?
Yes. A hot tub needs a flat, solid surface such as a concrete pad, pavers, or a reinforced deck. A swim spa is much heavier when filled and typically needs a reinforced concrete pad at least 6 inches thick. Our team will confirm the requirements for the specific model you choose.
Try both before you decide
The fastest way to choose is to sit in a hot tub and stand in a swim spa current. Our showroom at 1621 E. Spring St. in Long Beach has both on display, and we encourage swim spa shoppers to schedule a wet test so you can feel the current before you buy. We are open Monday through Saturday from 10 to 6 and Sunday from 12 to 5. Call (562) 283-0595 to set up a wet test, or start with our Find Your Perfect Swim Spa quiz. Financing is available on both, and you can see current options on our financing page.
Hot tubs and swim spas support relaxation and healthy routines but are not a substitute for medical care. If you have a medical condition, check with your healthcare provider before use.
