Caldera Hot Tubs

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*** Splash into Spring ***

Free steps

Free cover lifter

Free Chemicial starter pack

Free Caldera bath Robe

With any hot tub orders upto 31st March

Your leading supplier of
hot tubs in the Midlands

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The Midlands Biggest
Range of Hot Tub &
Swim Spa Accessories

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Endless Pools

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Luxury Swim Spas & Hot Tubs for Sale

Your leading supplier of Hot Tubs, Swim Spas & Accessories in the Midlands

Ultimate Hot Tubs are the leading supplier of award-winning Hot Tubs, Swim Spas & Exercise Pools. We offer a wide range of affordable, high quality hot tubs, boasting fantastic manufactures warranty.

With over 25 years experience we pride ourselves on our industry knowledge and expertise, ensuring that the entire process for you is as straightforward and relaxed as it should be.

* Celebrating 50 Years *

For 50 years, Caldera Spas has been redefining relaxation — evolving from a single custom spa in 1976 into a globally trusted name known for exceptional comfort, intelligent design, and powerful hydrotherapy. With signature features like Pure Comfort® seating and Hot Tub Circuit Therapy®, Caldera continues to lead the way, and to celebrate this milestone, you can explore their anniversary story, enjoy exclusive offers, and discover the latest models right here at Ultimate Hot Tubs.

Why Choose Caldera® from Ultimate Hot Tubs?

When you choose Caldera®, you’re not just buying a hot tub — you’re investing in 50 years of expertise, innovation, and relaxation.

And when you buy from Ultimate Hot Tubs, you get:

• Expert guidance to find the perfect spa •
• Professional installation and aftercare •
• Ongoing support from a trusted UK retailer •

👉 Start Your Caldera® Journey Today

Celebrate 50 years of world-class spa innovation with a hot tub designed around you.

Browse our Caldera® range or speak to our team today to find your perfect spa.

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Introducing The Most Intelligent Salt System on the Planet.

FreshWater IQ is an in-line self-monitoring salt system that tells you what it needs to maintain clean, natural-feeling water, with less time and effort. Because we believe your hot tub should take care of you, not the other way around.

FreshWater IQ uses the FreshWater Salt System to generate the perfect amount of chlorine. With fewer chemicals, water feels softer and gentler on eyes and skin, and can stay clean and fresh for up to a full year*, conserving water and saving money.

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Caldera 2022 Utopia Geneva Stretching 01075

Our Hot Tub Ranges

Caldera Spas

Expertly designed and crafted to provide the ultimate in comfort, design, and performance, so you can achieve your goal of a healthy lifestyle.

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EP FitnessSystems 2023 E2000 AlpineWhite Gray Lifestyle Kids Couch

Endless Pools

Compact Swimming Pools, Swim Spas & Non-Traditional Swimming Pools

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Fantasy Premier 2020 Arctic White Charcoal Family

Fantasy Spas™

We focus our efforts on a clear mission: to make the hot tub ownership affordable for anyone looking to introduce hydrotherapy into their life.

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Coast private hot tub swim spa in villa curve collection

Coast Spas Hot Tubs

Coast Spas™ have over 20 years of experience crafting the World’s Best Built Spas. Our mission is to deliver the highest quality spas with exceptional performance to customers worldwide.

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