Energy Efficient Hot Tubs
How Energy Efficient Are Caldera Spas™ Hot Tubs?
If you’re shopping for a hot tub, energy efficiency should be at the top of your list. At Ultimate Hot Tubs & Swim Spas, we’re proud to carry Caldera Spas™ which are among the worlds most energy efficient hot tubs available today. Designed with advanced and exclusive insulation, smart circulation, and efficient heating, Caldera hot tubs provide maximum relaxation while keeping energy costs low.

Why Choose an Energy Efficient Hot Tub?
Owning a hot tub is about improving your health, wellness and lifestyle – but it shouldn’t come with high energy bills. An energy efficient hot tub uses far less electricity to maintain water temperature, keeping operating costs affordable while reducing your environmental footprint. With Caldera Spas, you get the best of both worlds: luxury hydrotherapy and long-term energy savings.
California Efficiency Commission Compliant – Tried & Tested
At Caldera® spas, we don’t compromise when it comes to energy efficiency. Each of our hot tubs meets the most stringent energy standards established by the California Energy Commission (CEC). Every aspect of your spa’s construction – insulation, heaters, pumps, and even our spa covers – work together to keep your spa water hot, and your energy bills low.
Often the best place to research the cost of owning a hot tub is from actual owner reviews. Consider what these Caldera® spa owners have to say about the energy efficiency of their Caldera hot tub:
“I live in Reno which is very cold during the winter and I keep my spa at 38°C year around with very little difference on my electric bill. I use my tub daily and would highly recommend a Caldera Spa to anyone who is in the market for a spa.” – Cantabria™ owner
“This is our third hot tub, and the first that is so efficient. We hardly noticed a rise in our electric bill when we installed it. It is easy to maintain, and oh, so relaxing.” – Geneva™ owner
“I was particularly concerned about energy costs. This spa was located at a mountain cabin, with relatively cold winter temperatures… As an engineer, I can say I am particularly impressed with the efficiency of Caldera.” – Martinique™ owner

Caldera Spas Energy-Saving Features
- FiberCor Insulation – Caldera Spas proprietary FiberCor® is a breakthrough in hot tub insulation, FiberCor has four times the density of the urethane foam used in most other hot tub brands. It’s a loose, wool-like fiber that fills all voids and gaps in the hot tub compartments for better insulating efficiency than any other hot tub brand.
FiberCor is 100 percent non-petroleum based with no VOC emissions. So not only does it improve the efficiency and performance of your hot tub, reducing energy costs, it’s also environmentally-friendly
- EnergyPro Circulation Pump – We’re especially proud of the innovation that resulted in our exclusive EnergyPro™ Circulation pump and low energy hot tub heater. Many spas run jets throughout the day to circulate water and bring the water back up to a set temperature, but that cycling process uses a great deal of energy.
The EnergyPro hot tub pump operates continually at very low wattage, maintaining the temperature you’ve set so that the spa is always ready to use while actually reducing heater use. That’s because 80 percent of the energy used to operate the pump is transferred to the water as heat. It’s a small but efficient change that adds up to substantial savings over time.
- Insulated Spa Covers – Caldera hot tub covers are designed to precisely fit our spas for maximum energy efficiency – they form a tight seal that locks in heat. Durable and stylish with WeatherPro material.
Why Energy Efficiency Matters to Us
At Ultimate Hot Tubs & Swim Spas we believe relaxation should be worry-free. Choosing Caldera Spas hot tubs means you can enjoy hydrotherapy every day without stressing about rising energy bills. More importantly, you are making a sustainable choice that support s healthier planet!

Long-Term Value with Caldera Hot Tubs
Investing in an energy efficient spa not only lowers your monthly operating costs but also protects your investment over time. By conserving energy, Caldera Spas reduce wear on components, extending the life of your hot tub and hence the fantastic manufactures backed warranties!
Discover the Caldera Difference
If you’re ready to enjoy the perfect combination of comfort, performance, and efficiency visit Ultimate Hot Tubs & Swim Spas today. Our team will you explore the latest energy efficient hot tub models and find the one that perfectly fits your lifestyle.
Contact us or visit our showroom to learn more about Caldera Spas and how you can save energy while enjoying world-class relaxation.
Visit us at Dobbies Garden World, Nuneaton Road, Atherstone, CV9 1RF