How many people does the Master Spas Trainer 21 seat?

The Master Spas Trainer 21 seats 8 people comfortably.

How many jets does the Master Spas Trainer 21 have?

The Master Spas Trainer 21 features 51 jets powered by 4.

What are the dimensions of the Master Spas Trainer 21?

The Master Spas Trainer 21 measures 257" x 94" x 51" and holds approximately 1630 gallons of water.

What voltage does the Master Spas Trainer 21 require?

The Master Spas Trainer 21 runs on 220v.

Where can I buy the Master Spas Trainer 21?

The Master Spas Trainer 21 is sold through authorized Master Spas swim spa dealers. Hot Tub Hunt shows your nearest verified dealer along with regional pricing data when available.

Trainer 21

Master Spas

Last updated: September 2026

What Buyers Are Paying

Price on request — contact a dealer for a quote.

Dealers never pay to influence scores or rankings.

Key Specifications

Seats

Jets

Dimensions

257" x 94" x 51"

Volume

1630 gal

Zones

Dual Zone

Performance Ratings

Swim Level

Recreational

Propulsion

Jetted (Air Induction)

Enhanced Filtration

Features

Waterfall

Ozone

Foot Massage

Sunbathing Deck

WiFi

Warranty Details

Equipment Years

5 years

Labor Years

5 years

Parts Years

5 years

Plumbing Years

5 years

Shell Structure Years

10 years

Shell Surface Years

7 years

Full Specifications

Expert Guides

Swim Spa Pricing Explained: What Factors Influence the Cost?

Demystify swim spa pricing. Learn about the factors influencing costs, from entry-level to high-performance models, and how to navigate dealer markups.

Hunter Insights
2 free questions

Thinking...

Quick questions:

Hunter can make mistakes — verify important details with a dealer.

User-Reported Pricing

Add your zip code to see what buyers in your area paid

Available From This Dealer

Browse swim spa dealers by metro →

Enter your zip code to find dealers near you

How much does the Master Spas Trainer 21 cost?

Master Spas does not publish a list price for the Trainer 21; what you pay is set by your local authorized dealer and the package they bundle with it.

Specs driving that price: 51 jets, 4 pumps, a 257" x 94" x 51" footprint, 220v power. Larger cabinets, more pumps and higher jet counts push both list price and running cost up.