Caldera Hot TubsVIEW OUR RANGE *** Splash into Spring *** Free stepsFree cover lifterFree Chemicial starter pack Free Caldera bath RobeWith any hot tub orders upto 31st March Your leading supplier of
hot tubs in the MidlandsVIEW OUT HOT TUB RANGEThe Midlands Biggest Range of
Hot Tub & Swim Spa Accessories VIEW OUR RANGE OF ACCESSORIES Endless PoolsVIEW OUR RANGE
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.
Liquid Just Got Smarter
Save up to £2,500 on selected Utopia® and Paradise® Series hot tubs
Upgrade your garden with a premium CalderaSpas hot tub from Ultimate Hot Tubs and enjoy a smarter, cleaner and more relaxing spa experience.
For a limited time only, you can save up to £2,500 on selected models from the Utopia® and Paradise® Series, including the Tahitian® and Martinique® models.
This exclusive offer runs from 15th – 31st May 2026, making now the perfect time to visit our showroom, explore the range and find the right hot tub for your home.
FreshWater® IQ — cleaner water, less effort
Selected models include FreshWater® IQ, a smart self-monitoring salt system that helps keep your hot tub water clean, natural-feeling and easier to maintain.
That means you can spend less time checking water levels and more time relaxing, unwinding and enjoying your spa.
Why choose a CalderaSpas hot tub?
Built to last with premium-quality construction
Energy efficient to help reduce running costs
Powerful hydrotherapy jets for total relaxation
Designed for comfort whether relaxing alone or with family
Expert service and support from the Ultimate Hot Tubs team
Delivery and installation available for a smooth, stress-free experience
Visit our showroom
See the hot tubs in person at our showroom at Dobies Garden Centre, Atherstone and speak to our friendly team about the best model for your space, lifestyle and budget.
Whether you are creating a peaceful garden retreat, a family relaxation space or the perfect place to entertain, Ultimate Hot Tubs can help you find the right spa.
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.
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.
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.
Insulation: Tri-Thermic Barrier System (exceeds CEC standards)
Enamor™ £4,895
Dimensions: 206 x 160 x 84cm
Seating Capacity: 4
Water Volume: 984 litres
Power: 13 amp
Insulation: full foam insulation
Endless Pools X2000 Swim Spa
Dimensions: 610 x 226 x 147 cm
Seating Capacity: 7
Water Volume: 8895 litres
Power: 48amp
Insulation: Tri-Thermic Barrier System (exceeds CEC standards)
Riptide Starlight Orion (EX-DISPLAY SALE)
Dimensions: 2180mm x 2180mm x 920mm
Seating Capacity: 5
Water Volume: 1350 litres
Power: 32Amp
Insulation: R18 Full Foam Insulation
Martinique™
Dimensions: 226 x 193 x 87cm
Seating Capacity: 5
Water Volume: 1083 litres
Power: 25amp
Insulation: FiberCor®
Marino™ (ex-display SALE)
Dimensions: 213 x 213 x 91cm
Seating Capacity: 6
Water Volume: 1375 litres
Power: 16 amp
Insulation: FiberCor® Insulation
Entice™ £5,895
Dimensions: 218 x 196 x 84cm
Seating Capacity: 5
Water Volume: 1136 litres
Power: 13 amp
Insulation: full foam insulation
Splendor™ Premier £5,595
Dimensions: 198 R x 84cm
Seating Capacity: 5
Water Volume: 1003 litres
Power: 13 amp
Insulation: full foam insulation
Coast Spas Element Curve (L) (EX-DISPLAY SALE)
Dimensions: 2120mm x 2120mm x 1015mm (1195mm back)
Seating Capacity: 6
Water Volume: 1210 litres
Power: 32amp
Insulation: Foam Core Insulation
Ultimate 7 Hot Tub (£7,245)
Dimensions: 213 x 213 x 91cm
Seating Capacity: 7
Water Volume: 1375 litres
Power: 32 amp
Insulation: FiberCor® Insulation
Featured Products
Celio™
Dimensions: 213 x 165 x 74cm
Seating Capacity: 3
Water Volume: 821 litres
Power: 16 amp
Insulation: FiberCor® Insulation
Capitolo™
Dimensions: 208 x 208 x 84cm
Seating Capacity: 5
Water Volume: 1173 litres
Power: 16 amp
Insulation: FiberCor® Insulation
Entice™ £5,895
Dimensions: 218 x 196 x 84cm
Seating Capacity: 5
Water Volume: 1136 litres
Power: 13 amp
Insulation: full foam insulation
Ultimate 6 Hot Tub (£7,245)
Dimensions: 213 x 213 x 91cm
Seating Capacity: 6
Water Volume: 1375 litres
Power: 32 amp
Insulation: FiberCor® Insulation
Our hot tubs are arguably the best that money can buy in today’s market. They all boast unbelievable hydrotherapy, cutting edge technology, world-class build quality and have sold thousands worldwide!
Thousands of satisfied customers have already made the right choice and are enjoying the quality and luxury of owning a Riptide Hot Tub. We are dedicated to providing you with the best hot tub to suit you and your family.
