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.
H2X Trainer Series 21 D

EcoPur Filtration
VIP Technology
Hydrotherapy
StressRelief Neck & Shoulder Seat
Trainer 21 D General Info
Dimensions
257" x 94" x 60"
(653 cm x 239 cm x 153 cm)
Gallons
1,830
(6,928 L)
Jets
51
Model Specifications
Dimensions | 257" x 94" x 60" (653 cm x 239 cm x 153 cm) |
Water Capacity | 1,830 (6,928 L) |
Weight (Dry/Full) | 3,735 lbs (1,694 kg) / 20,850 lbs (9,457 kg) |
Propulsion System | Airless VIP Technology |
Power Requirement | 240 V / 100 Amp |
Pumps | 3 |
Stainless Steel Jets | 53 (Incl. 6 Airless VIP Jets and 1 Master Blaster®) |
Water Features | 8 |
Ozone System | Standard |
Filtration | EcoPur® Charge |
LED Lighting | Waterline |
Listing Number | 9972 |
Warranty
- 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*