Product Overview

The Raypak P-R406A-MN-C is a high-output natural gas pool and spa heater delivering 399,000 BTU to help you heat faster and hold temperature more consistently—especially in larger pools, attached spas, or setups that need quick recovery. This model features Millivolt Plus controls, polymer headers, and a copper heat exchanger, balancing strong performance with dependable construction.

Ideal For

• Medium to large residential pools

• Pools with attached spas that need quick heat-up and recovery

• Consistent temperature maintenance during cooler mornings/evenings

• Owners who want Raypak reliability in a straightforward natural gas heater

Key Features

• 399K BTU Heating Power: Faster warm-up and strong temperature hold.

• Natural Gas (#50): Built for natural gas installations (verify gas type before ordering).

• Millivolt Plus Controls: Simple, dependable operation (great for many standard pool-pad setups).

• Polymer Headers: Designed to help resist corrosion.

• Copper Heat Exchanger: Proven heat transfer performance.

• Heavy-Duty Build: 247 lbs for a solid, durable heater platform.

Benefits

• Swim sooner with quicker heat-up times from a 399K BTU output

• More comfortable spa sessions with better recovery between uses

• Long-term durability with polymer header design and copper exchanger construction

• A trusted brand choice for pool pros and homeowners alike

Quick Specs

• Brand: Raypak

• Model: P-R406A-MN-C

• Fuel Type: Natural Gas

• BTU Input: 399,000 BTU

• Controls: Millivolt Plus

• Headers: Polymer

• Heat Exchanger: Copper

• Weight: 247 lbs

• Item / Part #: 009195

Customer-Facing Q&A

Q: Is this heater for natural gas or propane?
A: This model is Natural Gas. If you need propane, you’ll want the LP version—make sure to match the heater to your fuel source.

Q: Is 399K BTU “too big” for my pool?
A: Bigger BTU generally means faster heating and better recovery, especially for pools with spas. Proper sizing depends on pool volume, climate, wind exposure, and whether you use a cover.

Q: What’s the advantage of polymer headers?
A: Polymer headers are commonly chosen for their corrosion resistance, which can help in harsh pool-pad environments.

Q: Does this work for both pools and spas?
A: Yes—this class of heater is frequently used for pool heating and spa heating, especially when quick heat-up is important.