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#50 Millivolt Plus Natural Gas Polymer Heater
#50 Millivolt Plus Natural Gas Polymer Heater
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Rheem P-M206A #50 Millivolt Plus Natural Gas Polymer Heater is a powerful gas-fired pool and spa heater with a high flow rate and fuel efficient design. Featuring an All-Copper-Fin-Tube Heat Exchanger, Stainless Steel Tube Sheet, and a PolyTuf Textured Powder Coating, Rheem Heaters are durable and reliable any environment. Rheem Heaters come with a set of 2 Inch slip-fit CPVC water connections, which make for a secure fit and an easy installation process. Trust Rheem Pool and Spa Heaters to deliver unprecedented heating performance for your pool or spa.
⭐⭐⭐⭐⭐
Buyers are highly satisfied with the heater’s consistent performance and rugged construction.
Many users noted the simple millivolt ignition system makes operation incredibly convenient.
The copper heat exchanger delivers quick, reliable heating with no noticeable drop in flow.
Customers love how easy the installation is, especially with the slip-fit connections.
They find the unit energy-efficient and perfect for year-round residential use.
- Heat Exchanger: All-copper-fin-tube for superior thermal efficiency
- Tube Sheet: Stainless steel construction for added durability
- Protective Finish: PolyTuf textured powder coating resists harsh conditions
- Ignition System: Millivolt Plus for easy, independent operation
- Water Connections: 2-inch slip-fit CPVC for secure, easy setup
- High Flow Rate: Ideal for pools and spas with up to 125 GPM
- No Electric Connection Required: Operates without electrical power
- Certified
- Brand: Rheem
- Application: Pool, Spa
- BTU Input: 199,500 BTU
- Fuel Type: Natural Gas
- Control Type: Millivolt Plus
- Phase: Single
- Voltage: 115V, 230V
- Flow Rate Max/Min: 125 gal/min
- Burner Orifice Size: #50
- Cabinet Dimensions (WxHxD): 20 x 38 x 28 inches
- Flue Diameter: 6 inch
- Gas Connection: 0.75 inch NPT
- Tubing Material: Copper
- Header Material: Polymer
- Frequency Rating: 60 Hz
- Weight: 187 pounds
- Elevation Range: 0 - 2000 feet
- Green/Energy Efficient: True
- Commercial/Residential: Residential
Q: Does this heater require an electrical connection to operate?
No, the Millivolt Plus ignition system allows the unit to ignite and operate without an electrical hookup.
Q: Is this heater suitable for high-flow pool systems?
Yes, it supports a flow rate of up to 125 GPM, making it compatible with high-flow setups.
Q: Can I install this heater outdoors without additional accessories?
Yes, the unit includes a stackless outdoor top, and the polymer header construction is ideal for outdoor installation.

Pool heaters and heat pumps are not returnable once installed or connected. Double-check fuel type, voltage, and sizing before installation.
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Rheem is known for manufacturing high-efficiency pool and spa heaters that deliver consistent, reliable performance. Designed for energy savings and durability, Rheem heating systems help you maintain the perfect water temperature all season long. At AquaDoc, we carry a full range of Rheem pool heaters to keep your swimming pool or spa warm, comfortable, and ready when you are.
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