
Thornapple 2
Hot Tub • 54 Jets • 7 Seats

About the Thornapple 2
The Thornapple 2 builds on the open, non-lounge design of the Thornapple line with a significantly upgraded hydrotherapy system. While maintaining the same spacious seating layout and social-friendly footprint, it introduces a denser 54-jet configuration powered by dual jet pumps for stronger, more immersive massage coverage.
Designed for users who want deeper therapeutic performance without sacrificing shared seating comfort, the Thornapple 2 delivers enhanced pressure across the back, shoulders, legs, and neck. It is ideal for families or social soakers who value both conversation-friendly design and noticeably increased massage intensity.
Why People Choose the Thornapple 2
- 💪Dual-pump system delivers stronger massage pressure
- 🛋️Open seating keeps the spa social and spacious
- ⚡Higher jet density for deeper therapeutic relief
- ✔️Ideal balance of performance and shared comfort
Core Features

LED Spa Lighting
Interior and exterior LED lighting enhances visibility and ambiance.

High-Output Hydrotherapy Jets
A dense 54-jet configuration powered by dual pumps delivers deeper, more immersive massage coverage across all seating positions.

Ozone Water Care System
Helps maintain clean, clear water while reducing chemical usage.

Cascade Water Feature
Adds gentle sound and visual movement for a calming soaking environment.

Balboa Control System
Reliable Balboa controls provide stable operation and precise temperature management.

Polar Insulation System
Full-foam insulation improves heat retention and energy efficiency. Certified to California Energy Commission standards.
Finish Options
Optional Features
Optional Add-ons
Supplies & Ongoing Care
Filters, water care, and maintenance items designed to support this model.
Planning and Ownership Guides
Use these next steps for installation planning, ongoing care, and side-by-side model decisions.
Warranty and Support Documents
Use the warranty links below when they are available for this tub. We also help with repairs, regular cleanings, and chemical servicing, including many tubs we did not originally sell.
warranty
Grand River Spas Premier Series Limited Warranty
Official Grand River Spas Premier Series limited warranty PDF effective January 1, 2025.
Related Manuals and References
manual
Grand River Spas Owner's Manual (2025)
Current Grand River owner's manual published through the manufacturer support center.
manual
Grand River Spas Owner's Manual (2024 Archive)
Archived Grand River owner's manual that may help with older tubs already in service.
Grand River publishes line-specific hot tub warranties and support resources. Contact us if you would like help matching the correct warranty to your exact tub.
If you want us to confirm whether we can service your spa, send the brand, model, and a photo of the serial tag through contact and we will point you in the right direction.