Hot Tub vs. Plunge Pool: Which Is Right for You?

Are you torn between a hot tub or a plunge pool for your DIY build? It’s a common dilemma, but by the end of this article, you’ll have a clear idea of which option suits your needs best. 

Let’s dive into the differences between hot tubs and plunge pools and help you decide which one is the right choice for your setup.

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What is a Plunge Pool?

A plunge pool is a compact swimming pool, typically around 15 feet in length  (and no more than 20 feet), with a width of about 8-10 feet. Unlike traditional swimming pools, plunge pools don’t have a deep or shallow end; the depth is the same throughout. 

Plunge pools are usually found in backyards and are designed for domestic use. You may also hear them referred to as dipping pools or cocktail pools. These pools can be heated naturally by the sun or with an external heating system, depending on your preference.

What is a Hot Tub?

On the other hand, a hot tub is specifically designed to provide a hot water experience. The key features that set a hot tub apart are the jets that keep the water moving to give a bubbly massage. Some hot tubs also come with additional features like air blowers or a Venturi system which enhances the water circulation and hydrotherapy experience.

So, Which is Best for You?

The decision between a plunge pool and a hot tub ultimately comes down to   how you plan to use it. Let’s break down the pros and cons of each to give you a better idea.

1.   Plumbing Complexity  

Plunge Pool

The plumbing system in a plunge pool is relatively straightforward. Typically, you’ll have a single pump that draws water from bottom drains, filters it, heats it (if you choose to), and sends it back into the pool.

Hot Tub

Hot tubs, on the other hand, are more complex. Along with the main circulation pump, there are additional pumps for the jets, air blowers, and other water-moving systems. Naturally, this increases the complexity of both installation and maintenance.

2.   Maintenance and Running Costs  

Surprisingly, maintenance and running costs for both options are fairly similar. In either case, you’ll need to regularly maintain the water quality with  sanitisers   like chlorine, bromine, or even UV systems. Water upkeep is essential regardless of whether you have a plunge pool or a hot tub.

3.   Control Room and Setup  

Hot Tub

If you’re using hot tub-specific parts (which I recommend to avoid the “swimming pool tax” which is not an actual tax, just higher costs for pool-branded parts), your pumps need to be positioned above the waterline. This is because hot tubs typically use centrifugal pumps that require gravity to work efficiently – they cannot suck air.

Plunge Pool

With a plunge pool, you have more flexibility. The pump can be placed either above or below the waterline. If you choose to put it above the ground, a self-priming pump is necessary. However, if the pump is installed below ground, you can use a standard hot tub pump.

You can check out a detailed video I did on pool pumps here. 

Is There a Best of Both Worlds?

If you’re still unsure, you might consider a  combo of both! Some designs feature a slightly larger plunge pool with an area equipped with hot tub jets. This allows you to enjoy the benefits of both a refreshing plunge and a warm, therapeutic soak. The possibilities are endless when it comes to designing a hybrid solution that fits your unique vision.

If you’re looking for ideas or inspiration, you can check out some designs on my website https://shop.buildahottub.com/.

Conclusion

At the end of the day, the decision comes down to your personal needs and how you plan to use your pool or tub. Whether you go for a plunge pool or a hot tub, it’s all about what fits your space, budget, and lifestyle. Don’t feel like you have to conform to any rules—choose the option that suits you best!

No matter what you decide, the choice between a hot tub and plunge pool is about creating the perfect spot for relaxation and enjoyment in your own backyard.

Can I Help You?

If I can help you in any way I would love to hear from you. You can get in touch using the form below.

Thanks - Andi

 

Hi, Andi here. I own Buildahottub.com and also write all of the articles and info pages on the site. Some years back now, I built my own hot tub but struggled to find the information I needed. So, once my tub was complete, I started this website to help others in their own pursuit of hot tub and plunge pools DIY building information.

Today, I've helped over 1000 DIY customers just like you all over the world build hot tubs and pools. Have a good look around the site, there are lots of resources here. Please do get in touch if I can help you. - Cheers, Andi