Hayward Universal H-Series Liquid Propane Heater with OmniX 400K
The Hayward Universal H-Series Liquid Propane Heater with OmniX 400K is engineered for easy drop-in replacement with direct compatibility to Hayward plumbing adapters — the LP version of the OmniX H-Series 400K for commercial pool installations without natural gas access. At the center is Hayward's Universal Display, delivering a consistent, intuitive control experience across Omni, OmniX, and competitive automation systems. With OmniX embedded intelligence, the heater provides enhanced programmability, advanced diagnostics, and seamless remote connectivity.
A 400,000 BTU liquid propane heater with full OmniX automation integration. Backed by a 2-year parts and 1-year labor warranty.
⚠️ Professional Installation Required. Pool heater installation involves propane gas line connections and electrical wiring. Always use a licensed contractor to ensure safety, code compliance, and warranty validity.
Key Features
400,000 BTU Liquid Propane
Maximum-capacity OmniX LP heating for commercial pools without natural gas.
OmniX Embedded Intelligence
Enhanced programmability, advanced diagnostics, and seamless remote connectivity built in.
Hayward Universal Display
Consistent, intuitive control experience across Omni, OmniX, and competitive automation systems.
Drop-In Replacement for Any Brand
Engineered for Hayward plumbing adapters — easy LP replacement for competitors' heaters.
Advanced Diagnostics
Built-in diagnostics simplify troubleshooting and reduce service calls.
Seamless Remote Connectivity
Monitor and control from anywhere via OmniX remote access.
2-Year Parts / 1-Year Labor Warranty
Hayward commercial warranty coverage.
Who It's For
- Commercial pool facilities using Hayward OmniX automation without natural gas access
- Drop-in LP replacement installations requiring OmniX connectivity at 400K BTU
- Any facility needing maximum BTU LP heating with integrated OmniX intelligence
- Compatible with existing Omni, OmniX, or competitive automation systems
Specifications
Heating Performance
| BTU Output | 400,000 BTU |
| Fuel Type | Liquid Propane |
Controls & Automation
| Automation | OmniX Embedded Intelligence |
| Display | Hayward Universal Display |
| Compatibility | Omni, OmniX, and competitive automation systems |
Physical
| Product Weight | 213.5 lb |
| Shipping Dimensions | 39.5 × 32.8 × 30.6 in |
Approvals & Warranty
| Application | Pool (Commercial) |
| Warranty | 2 Years Parts / 1 Year Labor |
What's in the Box
- Hayward Universal H-Series Liquid Propane Heater with OmniX 400K
- User Manual
Warranty
The Hayward H-Series LP OmniX 400K comes with a 2-year parts and 1-year labor manufacturer warranty. Clearflow Pool Supply is an authorized Hayward dealer and will assist with any warranty service needed.
Downloads
Frequently Asked Questions
What is the difference between this (HS400FDP) and the natural gas model (HS400FDN)?
The HS400FDP runs on liquid propane and the HS400FDN runs on natural gas. All other specifications — BTU output, OmniX automation, Universal Display, and warranty — are identical. Choose the LP model if natural gas isn't available at your installation site.
What is OmniX?
OmniX is Hayward's advanced pool automation platform. Embedded in this heater, it enables enhanced programmability, advanced diagnostics, and seamless remote connectivity via the OmniX ecosystem. The Universal Display also ensures compatibility with standard Omni systems and competitive automation platforms.
Is it a drop-in replacement for other brands?
Yes. The HS400FDP is engineered for direct compatibility with Hayward plumbing adapters that match connection points of other popular heater brands, making LP swap-out possible without major replumbing.
Does this heater require professional installation?
Yes. Propane heater installation involves connecting to a propane supply line, electrical wiring, and proper venting. A licensed contractor must perform the installation to ensure safety, local code compliance, and warranty validity.