Pentair MasterTemp® 125 Heater with Cord 125K BTU Liquid Propane
The Pentair MasterTemp® 125 Heater with Cord 125K BTU Liquid Propane provides energy savings and advanced operating features that were only available from much larger heaters. With revolutionary pre-mixed gas combustion technology delivering 82% thermal efficiency — the highest in its class — and an advanced LCD display/controller for more information and better control. LP version for locations without natural gas access.
Built by Pentair with a compact, lightweight design and 120V power cord included. Suitable for above-ground pools, spas, and in-ground pools up to 15,000 gallons. Backed by a 1-year parts warranty.
⚠️ Professional Installation Required. Pool heater installation involves propane gas line connections. Always use a licensed contractor to ensure safety, code compliance, and warranty validity.
Key Features
125,000 BTU LP — 82% Efficiency
Highest efficiency in the 125K BTU LP class via pre-mixed gas combustion — for locations without natural gas.
Advanced LCD Display/Controller
More information and better control than standard digital displays.
Pre-Mixed Gas Combustion
Revolutionary combustion technology for maximum efficiency in a compact LP heater.
Power Cord Included
120V cord included — plug-in electrical connection, no hardwiring required.
Compact, Lightweight Design
Easy to install — reduces labor costs and fits smaller equipment pads.
Above-Ground and Small In-Ground Pools
Designed for above-ground pools, spas, and in-ground pools up to 15,000 gallons.
Indoor and Outdoor Rated
Suitable for both indoor and outdoor pool and spa installations.
1-Year Parts Warranty
Pentair parts warranty coverage.
Who It's For
- Above-ground pool and spa owners without natural gas wanting a compact LP heater with LCD controls and cord
- In-ground pool owners with pools up to 15,000 gallons without natural gas access
- Installations where an LCD controller is preferred and a plug-in cord is convenient
Specifications
Heating Performance
| BTU Input | 125,000 BTU |
| Thermal Efficiency | 82% |
| Fuel Type | Liquid Propane |
| Combustion Technology | Pre-Mixed Gas |
| Flow Rate | 20–70 GPM |
Construction
| Control Type | Advanced LCD Display/Controller |
Installation
| Electrical Connection | 120V Cord Included |
| Application | Indoor / Outdoor / Pool / Spa |
Physical
| Product Weight | 100 lb |
| Cabinet Dimensions | 21 W × 23 D × 21 H in |
| Shipping Dimensions | 36 × 22.5 × 25 in |
Approvals & Warranty
| Warranty | 1 Year Parts |
What's in the Box
- Pentair MasterTemp 125 Liquid Propane Heater
- Power Cord
- Union Fittings
- User Manual
Warranty
The MasterTemp 125 with Cord LP (EC-462025) comes with a 1-year parts manufacturer warranty from Pentair. Clearflow Pool Supply is an authorized Pentair dealer and will assist with any warranty service needed.
Downloads
Frequently Asked Questions
How does this compare to the other MasterTemp 125K LP models (461060, 461061)?
All three are 125K BTU LP MasterTemp heaters with pre-mixed combustion and 82% efficiency. The EC-462025 features an advanced LCD display/controller, a power cord, and a 1-year parts warranty. The 461061 has a rotating digital display, cord, and 2-year warranty. The 461060 has a rotating digital display, hardwire connection, and 2-year warranty. Choose the EC-462025 for the LCD controller with cord; choose 461061 for a longer 2-year warranty with cord.
Is it suitable for above-ground pools?
Yes. The MasterTemp 125 LP is designed for above-ground pools, spas, and in-ground pools up to 15,000 gallons.
Does it require professional installation?
Yes. A licensed contractor should handle the propane gas line connection and proper venting. The power cord allows straightforward plug-in electrical connection, but the gas connection and venting must be done professionally.