What Is the Difference Between a Plunge Pool and a Spa Pool?
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Quick Answer
A plunge pool is generally larger and gives you more open water for cooling off, family time, and light water activities. A spa pool is smaller and designed primarily for sitting, soaking, and enjoying hydrotherapy jets.
Is a Plunge Pool and a Spa Pool the Same Thing?
There is some crossover between the two, especially when a plunge pool includes heating, seating, and jets. If you're trying to decide between a plunge pool and a spa pool, the best place to start is with what you want to do once you're in the water. Both can be great additions to your backyard and part of your complete at-home wellness setup, but they offer a pretty different experience.
What Is a Plunge Pool?
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A plunge pool sits somewhere between a traditional swimming pool and a spa pool in terms of size and how you can use it. It's compact enough to fit in backyards where a full-sized in-ground swimming pool might be too much, while still giving you plenty of open water to move around in. That makes plunge pools particularly handy for cooling off, playing with the kids, and enjoying the water.

At Alpine Spas, our plunge pools also include seating and jets, so you can settle in and relax when you aren't moving around. The Ultimate Plunge Pools Buyer's Guide is a good next read if you'd like a closer look at sizes, costs, installation, and what to consider before buying one.
What Is a Spa Pool?
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A spa pool is built around sitting and soaking. Instead of a large open body of water, you'll usually find individual seats or loungers arranged around the spa, with hydrotherapy jets targeting different areas of the body.
A spa pool is a good choice if your priority is relaxing at the end of the day, enjoying warm water, or spending time sitting and chatting with your partner, family, or friends. Spa pools are also generally smaller than plunge pools, which can make them easier to fit into compact outdoor areas.
Plunge Pool vs Spa Pool
Both give you somewhere to relax and enjoy the water at home, but the experience is quite different. If you're still deciding which one would suit your backyard better, here's a quick look at how they compare.
The ultimate Plunge Pool vs Spa Pool Comparison
| Plunge Pool | Spa Pool | |
|---|---|---|
| Size | Larger with more open water | Smaller and more compact |
| Best for | Cooling off, family time, and relaxing | Soaking, relaxation, and hydrotherapy |
| Seating | Some built-in seating with plenty of open space | More dedicated seats and loungers |
| Jets | Jets Available for relaxation and water activities | Hydrotherapy jets are a major part of the experience |
| Room to move | More space to move around | Primarily designed for sitting |
| Family use | More room for kids to play | Better suited to sitting together |
| Temperature | Can be adjusted depending on how you want to use it | Usually kept warm for soaking |
How Much Space Do You Need for a Plunge Pool vs Spa Pool?
A spa pool usually takes up less space, so it can be a good fit for smaller patios, courtyards, and backyards. A plunge pool needs a little more space, but gives you a larger area of open water in return.
Don't forget to allow room around whichever one you choose. You'll need space to get in and out comfortably, as well as suitable access for installation and future servicing. Before deciding where yours will go, have a look at our guide to preparing your spa pool site so you know what to allow for.
Different Plunge Pool Sizes
Below is our Range of Plunge Pools with dimensions, so you get a good overview of how much / how little space you need.
Different Plunge Pool Sizes
Below is our Range of Plunge Pools with dimensions, so you get a good overview of how much / how little space you need.
- 3 Person
Juno
3790 x 2280 x 1360mm
Similar elsewhere*$27,490
From$21,995
Save Up To $5,495 - 3 Person
Triumph
4090 x 2280 x 1370mm
Similar elsewhere*$35,490
From$23,995
Save Up To $11,495 - 6 Person
Olympia
4800 x 2280 x 1530mm
Similar elsewhere*$37,490
From$27,995
Save Up To $9,495 - 6 Person
Neptune
5940 x 2280 x 1530mm
Similar elsewhere*$47,995
From$31,995
Save Up To $16,000
Plunge Pool Or Spa Pool - Which One Should I Choose?
We recommend you choose based on what you'd miss most if you didn't have it.
If that's:
room for the kids to play
somewhere to cool down properly
enough open water to move around
take a closer look at our plunge pool range.
If it's:
sinking into a comfortable seat
turning on the jets and enjoying a warm soak at the end of the day
a spa pool is probably going to get more use.
Still torn between the two? Contact us or come and visit one of our showrooms. We'll help you compare the options based on your backyard and how you want to use it.

Written by our Swim Spa Expert - Josh Hannah
Josh Hannah is Alpine Spas' dedicated Swim Spa Specialist, with extensive hands-on experience and an in-depth knowledge of everything swim spas have to offer. Whether you're looking for a low-impact fitness solution, a family entertainer, or something in between, Josh finds the right fit for you.
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