H2X Fitness Swim Spas
Where your next challenge begins
Challenger 21D
Dimensions
257" x 94" x 60"
653 cm x 239 cm x 153 cm
Weight (Dry/Full)
3,735 lbs/34,045 lbs
1,695 kg/15,443 kg
Jets
53
and two Master Blaster®
Gallons
1,830
6,928 L
Challenger 21D
Challenger 21D Swim Spa
Redefine backyard living with the H2X Challenger 21D. This dual-zone swim spa design provides an expansive swim area, a separate hot tub section, and an integrated sun lounge. Offering the benefits of a pool with the therapy for a hot tub, this 21-foot swim spa is the perfect spot for swimming in place, water exercise, recreation, and relaxation. Personalize your sessions with independent temperature controls, adjustable jets, and LED lighting.
Features
Innovative design for everyday living
Premium Options
Fusion Air Sound System
Stream your favorite station or playlist via Bluetooth®. The swim spa stereo includes up to four interior, water-resistant speakers, and a subwoofer to maximize sound quality.
Premium Options
Mast3Pur™ Water Management System
The Mast3rPur™ Water Management System reduces the amount of chemicals, like chlorine, that you need to use and keeps your spa water clean naturally.
Standard Features
Aquaspeed VSP
The Challenger swim system features six airless VIP jets that create a strong, steady current without introducing air into the water.
Standard Features
Hydrotherapy
Experience the best of hydrotherapy with adjustable temperature controls and strategically placed jets. H2X Fitness Swim Spas feature contoured therapy seats and the Xtreme Therapy Cove so you can relax and recover.
Standard Features
LED Lighting
Waterline LED lighting adds to the ambiance and overall enjoyment of your swim spa.
Standard Features
Cabinet Lighting
Soft exterior lighting brings the cabinet's modern design to life. The illuminated MasterSpas logo remains lit as a signature that the spa is ready and waiting, while a subtle light bar activates at night to highlight the refined design.
Standard Features
Xtreme Therapy™ Cove
The Xtreme Therapy Cove features a unique jet pattern that targets back, hips, thighs, and calves. Use as a recovery tool or enjoy a therapeutic massage.
Standard Features
EcoPur Filtration
The clean, clear water you want without the harsh chemicals you don't. EcoPur Charge uses minerals like copper and zinc to purify water and remove dirt, bacteria, and algae.
Standard Features
Master Blaster Foot Therapy
Treat your feet to a rejuvenating foot massage with the Master Blaster Foot Therapy. Each jet cluster features 14 individual nozzles for a soothing foot massage.
Standard Features
StressRelief Neck and Shoulder Seat™
Relieve tension and pain in your neck and shoulders with the StressRelief Neck and Shoulder Seat. The unique out-of-water jets target this high-tension area.
Standard Features
Master Force™ Bio-Magnetic Therapy
The Master Force Bio-Magnetic Therapy System features strategically placed magnets to relieve inflammation, improve circulation, and boost nervous system responses.
Standard Features
Water Features
The waterfalls of your swim spa are soothing to watch and listen to, adding to the overall ambiance of your backyard.
Standard Features
H2Xercise™ Fitness System
Water exercise is a great way to work toward your fitness goals. H2X Fitness Swim Spas come with the H2Xercise Fitness System, which includes rowing bars and resistance tubing.
Standard Features
Wi-Fi Module
Control your swim spa from the convenience of your phone. Set the water temperature, turn on the light, run the massage pumps, and more.
Standard Features
Nonslip, Comfort Floor System
The Nonslip, Comfort Floor System offers safety and comfort with the unique combination of traction and cushion.
Gallery
Ready for what's next
The best way to know which model is right for you is to see it in person. A local MasterSpas dealer can walk you through the features, share pricing and help you envision how it fits your lifestyle. Take the step toward your perfect soak today.
Find a DealerH2X Fitness Swim Spas
Challenger 21D
| Dimensions | 257" x 94" x 60" (653 cm x 239 cm x 153 cm) |
| Weight (Dry/Full) | 3,735 lbs (1,695 kg) / 34,045 lbs (15,443 kg) |
| Gallons | 1,830 (6,928 L) |
| Power Requirement | 240 V / 100 A |
| Stainless Steel Jets | 53 |
| Pumps | 5 |
| Propulsion System | AquaSpeed VSP™ |
| Water Features | 8 |
| Water Care | EcoPur® Charge + Ozone (North America) EcoPur® Charge + UV (International) |
| LED Lighting | Waterline |
| Exclusive Features | Airless VIP Swim Jet Technology StressRelief Neck & Shoulder Seat Master Force™ Bio-Magnetic Therapy Master Blaster® Foot Massage Therapy Xtreme Therapy™ Cove Sun Lounger Nonslip, Comfort Floor System H2Xercise™ Fitness System Deluxe Quad-Fold Cover Wi-Fi Module |
| Premium Options | Mast3rPur Water Management System Fusion Air Sound System |
| Accessories | Axis Cover Hybrid Cover Axis Cover Shelf Hydraulic Cover Lift Manual Cover Lift Heat Pump Premium Swim Spa Step Bluetooth Speaker |
| Listing Number | 9972 |
- 10 YEARS - Spa Structure
- 7 YEARS - Shell Surface
- 5 YEARS - Equipment
- 5 YEARS - Plumbing
- 5 YEARS - Jets
- 3 YEARS - Nonslip, Comfort Floor System
- Lifetime - Skirting: Duramaster Polymer™
- 1 YEAR - LED Light System*
- 1 YEAR - Mast3rPur System*
- 1 YEAR - Audio Equipment*