Pentair MasterTemp® Natural Gas High Performance Heater 250HD BTU
The Pentair MasterTemp® Natural Gas High Performance Heater 250HD BTU offers all the efficiency, convenience, and reliability features you want in a pool heater — plus a lot more. As easy to use as your home heating system, with user-friendly indicator lights that make system operation and monitoring a snap. The compact design and super-quiet operation won't intrude on your poolside leisure time.
This heavy-duty (HD) unit features a cupro-nickel heat exchanger that stands up to the harshest applications — low pH, high flow, or heavy use. CSA certified, green certified, and backed by a 2-year limited warranty.
⚠️ Professional Installation Required. Pool heater installation involves gas line connections and electrical wiring. Always use a licensed contractor to ensure safety, code compliance, and warranty validity.
Key Features
250,000 BTU HD Output
Heavy-duty 250K BTU natural gas heating for pools and spas.
Cupro-Nickel Tubing
Stands up to low pH, high flow, and heavy use applications.
Best-in-Class Energy Efficiency
Green certified — outperforms industry standards for efficiency.
Heats Up Fast
No long waits before enjoying your pool or spa.
Digital Indicator Lights
User-friendly indicator lights make system operation and monitoring a snap.
Manual Gas Shut-Off
Built-in manual gas shut-off when service is required.
Compact, Quiet Design
Super-quiet operation that won't intrude on poolside leisure.
2-Year Limited Warranty
Pentair residential warranty coverage.
Who It's For
- Pool and spa owners wanting a heavy-duty natural gas heater with cupro-nickel tubing
- Salt water pools and applications with low pH or high flow demands
- Indoor and outdoor pool installations
- Anyone who wants the MasterTemp HD platform at the 250K BTU size
Specifications
Heating Performance
| BTU Input | 250,000 BTU |
| Fuel Type | Natural Gas |
| Max Flow Rate | 120 GPM |
Construction
| Tubing Material | Cupro Nickel (HD) |
| Control Type | Digital (Indicator Lights) |
Installation
| Gas Connection | 0.75 in |
| Voltage | 120V / 240V |
| Frequency | 60 Hz |
| Phase | Single |
| Application | Indoor / Outdoor / Pool / Spa |
Physical
| Product Weight | 136 lb |
| Cabinet Dimensions | 23 W × 28.2 D × 21 H in |
| Shipping Dimensions | 36 × 25 × 30 in |
Approvals & Warranty
| Certifications | CSA Certified |
| Energy Efficient | Yes (Green Certified) |
| Warranty | 2 Years Limited |
What's in the Box
- Pentair MasterTemp 250HD BTU Natural Gas Heater
- Union Fittings
- User Manual
Warranty
The MasterTemp 250HD BTU NG comes with a 2-year limited manufacturer warranty from Pentair. Clearflow Pool Supply is an authorized Pentair dealer and will assist with any warranty service needed.
Downloads
Frequently Asked Questions
What is the difference between the 250HD (460806) and the standard 250K NG (460732)?
Both are 250,000 BTU natural gas MasterTemp heaters with cupro-nickel heat exchangers. The 460732 features a rotating LCD display with troubleshoot icons and is the standard residential model. The 460806 HD uses digital indicator lights instead and is built specifically for heavy-duty applications with the most demanding water chemistry or high-flow conditions.
Does this heater require professional installation?
Yes. Gas heater installation involves connecting to a natural gas supply line, electrical wiring, and proper venting. A licensed pool contractor or plumber must perform the installation to ensure safety, local code compliance, and warranty validity.
Is it compatible with salt water pools?
Yes. The cupro-nickel tubing provides excellent resistance to salt water and chemical corrosion, making this a reliable choice for salt water pool installations and other chemically demanding applications.
What size pool is the 250K BTU suitable for?
As a general guideline, 250,000 BTU is typically suited for pools in the 15,000-30,000 gallon range depending on climate, desired temperature rise, and heat loss factors. A licensed pool professional can calculate the correct BTU for your specific pool and location.
Can this heater be used indoors?
Yes. The MasterTemp is rated for both indoor and outdoor installation. Indoor installations require proper venting per local code. Consult the install guide and a licensed contractor for indoor venting requirements.