Product Overview
The Pentair ETi® 250 High Efficiency Pool Heater 461112 is a premium 250,000 BTU natural gas pool and spa heater built for strong heating performance, high efficiency, and long-term durability. Designed with Pentair’s ETi high-efficiency platform, this heater helps reduce energy waste while delivering dependable heat-up for residential pools, spas, and smaller commercial-style applications.
The ETi 250 features a Titan-Tough™ Direct-Fire Titanium Heat Exchanger with ASME-certified construction, giving it excellent corrosion resistance and durability compared to standard copper heat exchanger designs. It is a strong choice for pool owners who want efficient heating, premium construction, and dependable performance in a compact heater footprint.
Ideal For
Residential in-ground pools
Pool and spa combination systems
Smaller commercial-style pool applications
Customers wanting a high-efficiency gas heater
Natural gas pool heating systems
Pool owners upgrading from a standard gas heater
Applications where corrosion resistance is important
Equipment pads where premium efficiency is preferred
Key Features
250,000 BTU heating performance
High-efficiency ETi heater design
Natural gas operation
Titan-Tough™ Direct-Fire Titanium Heat Exchanger
ASME-certified heat exchanger construction
Up to 96% thermal efficiency platform
Digital control panel for easy operation
Low NOx performance
Multiple orientation options for easier gas line connection
Easy-access keypad positioning
Compact footprint for tighter equipment pad layouts
Built for reliable pool and spa heating performance
Benefits
The Pentair ETi 250 is designed for pool owners who want more efficiency and durability than a standard gas heater. Its high-efficiency design helps reduce wasted heat, while the titanium heat exchanger provides excellent corrosion resistance for long-lasting performance.
With 250,000 BTUs of heating output, the ETi 250 is a strong fit for residential pools, spas, and applications where a 400K BTU heater may be more than the system needs. The digital controls make operation simple, and the compact design helps make installation easier on many equipment pads.
Specifications
| Specification | Details |
|---|---|
| Brand | Pentair |
| Series | ETi 250 |
| Product Type | High Efficiency Pool & Spa Heater |
| Model | ETi 250 |
| SKU | 461112 |
| Barcode | 788379877491 |
| Fuel Type | Natural Gas |
| BTU Rating | 250,000 BTUs |
| Electrical Requirement | 120/240 VAC |
| Phase | Single Phase |
| Frequency | 60 Hz |
| Thermal Efficiency | Up to 96% platform efficiency |
| Heat Exchanger | Titan-Tough™ Direct-Fire Titanium |
| Heat Exchanger Certification | ASME Certified |
| Low NOx | Yes |
| Control Type | Digital Control Panel |
| Application | Residential pool/spa and smaller commercial-style heating |
| Installation Type | Outdoor or properly vented indoor installation |
| Installation | Professional installation recommended |
| Condition | New |
Compatibility & Ordering Notes
Confirm this is the correct 250,000 BTU ETi model before ordering.
Verify that natural gas is the correct fuel type for your installation.
Confirm BTU sizing, gas line size, gas supply, electrical requirements, plumbing layout, venting requirements, clearances, and local code requirements before installation.
For propane applications, verify the required propane configuration or available conversion requirements before ordering.
Professional installation is strongly recommended.
Installed or used heaters may not be eligible for return.
Customer-Facing Q&A
Q: Is Pentair 461112 natural gas or propane?
A: Pentair 461112 is commonly listed as the natural gas ETi 250 heater. Always verify fuel configuration before installation.
Q: How many BTUs is this heater?
A: This heater is rated at 250,000 BTUs.
Q: What makes the ETi 250 different from a standard gas heater?
A: The ETi 250 is a high-efficiency heater with a titanium ASME-certified heat exchanger, giving it improved efficiency and corrosion resistance compared to many standard gas heater designs.
Q: What type of heat exchanger does it use?
A: It uses Pentair’s Titan-Tough™ Direct-Fire Titanium Heat Exchanger.
Q: Is this heater ASME certified?
A: The ETi 250 features ASME-certified heat exchanger construction.
Q: Can this heater run on 120V or 240V?
A: Yes. This model is commonly listed with 120/240 VAC electrical capability.
Q: Is this heater good for large pools?
A: The 250K BTU size is a strong option for many residential pools and spas. Larger pools, colder climates, or customers wanting faster heat-up may need a larger BTU heater.
Q: Is professional installation recommended?
A: Yes. Gas pool heaters should be installed by a qualified professional to ensure proper gas, electrical, plumbing, venting, and safety setup.
Q: What should I verify before ordering?
A: Confirm fuel type, BTU sizing, gas supply, electrical requirements, plumbing compatibility, venting requirements, clearances, and local code requirements.