NEW ENGLAND'S HOME FOR SPAS, SAUNAS & MORE
At Great Bay Spa & Sauna, we guarantee the highest quality product and the best customer service possible. We pride ourselves on being the hot tub, swim spa, and sauna experts in Portsmouth and all of New England.
Discover the ultimate lifestyle of relaxation and socializing with hot tub ownership. At Great Bay Spa & Sauna, we believe hot tubs are more than just a product, they're a way of life.
We are here to help! We know shopping for a hot tub can be confusing and complicated. Here are the best selling hot tubs for your convenience.
Elevate your hot tub experience with Spa Sense™—a cutting-edge innovation from Sundance Spas that brings intelligent water care and personalized relaxation to your backyard. This advanced technology uses real-time sensors and intuitive controls to ensure your water is always clean, balanced, and ready to enjoy. With effortless maintenance and a tailored wellness experience, Spa Sense™ lets you focus on what matters most—relaxation, recovery, and reconnecting.
Learn More About Spa Sense
Discover the ultimate destination for hot tub buying information. Explore our Sundance® models and we'll do our best to give you a showroom experience online. The hot tub learning resource center for owners and buyers is a comprehensive web page filled with resources to make your buying journey a breeze.
View our current sales specials happening now. We offer the best possible price on all products we sall. View our current sales on selected products happening now and save money!
Design Your Own Hot Tub
We purchased a hot tub several years ago and continue to visit regularly for supplies. They have been consistently helpful, friendly, always fair, and full of integrity.
Hydropool Swim Spas are designed with luxury and fitness training in mind. One of the easiest swim spas to maintain, these self-cleaning swim spas clean 100% of the water in the spa in a mere 45 minutes, so that you can spend your time enjoying the swim spa.
We know shopping for a swim spa can be confusing and complicated. Here are the best selling swim spas for your convenience. Have questions? We are here to help!
We sell spa covers, cover lifts, steps, spa maintenance products, sanitizing systems, filter cartridges, aromatherapy, and more. Have questions? Visit our hot tub resource center to learn more!
This short 2' handled spa net is designed for removal of light debris. The compact size of this...
SHOP NOW
Here it is... The World Famous Water Bobble for Spas! When properly placed in the skimmer, the...
SHOP NOW
Easy to use manual pool and spa vacuum FOR MINOR DEBRIS: The GAME handheld pool and spa vacuum...
SHOP NOW
Sundance® SunPurity™ mineral sanitizer cartridge for Sundance® Spas Mineral purification is a...
SHOP NOW
This is an OEM ClearRay® Bulb and not an aftermarket knockoff. Yearly replacement is required to...
SHOP NOW
Switching Over to Waters Choice Enzymes If you are switching over to Waters Choice enzymes from a...
SHOP NOW
*Note: Inner Portion Only. Outer Filter Sold Separately. Can be used on the Spas that used the...
SHOP NOW
*Note: Outer Portion Only. Inner Sold Separately (Link to A81) 2009+ Sundance® 880 Series Spas...
SHOP NOW
MicroClean Filtration Systems filter thoroughly from two directions through pleated and microfiber...
SHOP NOW
Transform your home into a wellness retreat with our premium saunas. Whether you seek relaxation, detoxification, or improved health, our saunas are designed to provide the ultimate rejuvenating experience. Shop now and discover the perfect sauna for your lifestyle.
Buying a sauna can be confusing. But we're here to help! Here are the best selling saunas below for your convenience.
Our experienced team is waiting to walk you through our casual outdoor furniture options. We’ve got a style to suit you, and all the pieces you’ll need to create your ideal backyard. Easily design a comfortable space for relaxing any day of the week.
Not sure what to look for? Here are our best selling furniture for your convenience. Transform your entire backyard into its own retreat. Combine a hot tub with outdoor furniture to capitalize on feelings of peace and comfort.
