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Hayward Universal H-Series Natural Gas Heater with OmniX 400K

by Hayward
$5,399.00

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✓ Authorized Dealer
✓ Free Shipping
✓ Manufacturer Warranty
✓ Expert Support

The Hayward Universal H-Series Natural Gas Heater with OmniX 400K is engineered for easy drop-in replacement with direct compatibility to Hayward plumbing adapters. 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 natural gas heater built for pool applications where OmniX automation integration is required. Backed by a 2-year parts and 1-year labor 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

OmniX Embedded Intelligence

Enhanced programmability, advanced diagnostics, and seamless remote connectivity built in.

Hayward Universal Display

Consistent, intuitive control experience compatible with Omni, OmniX, and competitive automation systems.

400,000 BTU Natural Gas

Maximum-capacity gas heating for large pool applications.

Drop-In Replacement Design

Engineered for easy replacement with direct compatibility to Hayward plumbing adapters.

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 Omni or OmniX automation systems
  • Drop-in replacement installations compatible with existing Hayward plumbing adapters
  • Anyone who needs 400K BTU natural gas heating with integrated automation intelligence
  • Facilities requiring advanced remote diagnostics and programmability

Specifications

Heating Performance

BTU Output 400,000 BTU
Fuel Type Natural Gas

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 Natural Gas Heater with OmniX 400K
  • User Manual

Warranty

The Hayward H-Series with 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 OmniX?

OmniX is Hayward's advanced pool automation platform. When embedded in the heater, it enables enhanced programmability — scheduling, setpoints, diagnostics — and seamless remote connectivity via the OmniX ecosystem. The Universal Display also ensures compatibility with standard Omni systems and even competitive automation platforms.

Is this a drop-in replacement for existing Hayward heaters?

Yes. The H-Series HS400FDN is engineered for easy drop-in replacement with direct compatibility to Hayward plumbing adapters, making it suitable for upgrading existing Hayward heater installations without major replumbing.

Does it work with non-Hayward automation systems?

Yes. The Hayward Universal Display is designed to deliver a consistent control experience across Omni, OmniX, and competitive automation systems — so it can integrate into existing third-party control environments.

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 must perform the installation to ensure safety, local code compliance, and warranty validity.

Description
✓ Authorized Dealer ✓ Free Shipping ✓ Manufacturer Warranty ✓ Expert Support

The Hayward Universal H-Series Natural Gas Heater with OmniX 400K is engineered for easy drop-in replacement with direct compatibility to Hayward plumbing adapters. 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 natural gas heater built for pool applications where OmniX automation integration is required. Backed by a 2-year parts and 1-year labor 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

OmniX Embedded Intelligence

Enhanced programmability, advanced diagnostics, and seamless remote connectivity built in.

Hayward Universal Display

Consistent, intuitive control experience compatible with Omni, OmniX, and competitive automation systems.

400,000 BTU Natural Gas

Maximum-capacity gas heating for large pool applications.

Drop-In Replacement Design

Engineered for easy replacement with direct compatibility to Hayward plumbing adapters.

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 Omni or OmniX automation systems
  • Drop-in replacement installations compatible with existing Hayward plumbing adapters
  • Anyone who needs 400K BTU natural gas heating with integrated automation intelligence
  • Facilities requiring advanced remote diagnostics and programmability

Specifications

Heating Performance

BTU Output 400,000 BTU
Fuel Type Natural Gas

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 Natural Gas Heater with OmniX 400K
  • User Manual

Warranty

The Hayward H-Series with 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 OmniX?

OmniX is Hayward's advanced pool automation platform. When embedded in the heater, it enables enhanced programmability — scheduling, setpoints, diagnostics — and seamless remote connectivity via the OmniX ecosystem. The Universal Display also ensures compatibility with standard Omni systems and even competitive automation platforms.

Is this a drop-in replacement for existing Hayward heaters?

Yes. The H-Series HS400FDN is engineered for easy drop-in replacement with direct compatibility to Hayward plumbing adapters, making it suitable for upgrading existing Hayward heater installations without major replumbing.

Does it work with non-Hayward automation systems?

Yes. The Hayward Universal Display is designed to deliver a consistent control experience across Omni, OmniX, and competitive automation systems — so it can integrate into existing third-party control environments.

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 must perform the installation to ensure safety, local code compliance, and warranty validity.

Shipping

Shipping Policy

At ClearFlow Pool Supply, we keep things simple.

👉 Free shipping on all orders within the United States.
No hidden fees. No surprises.


Order Confirmation

As soon as you place your order, you’ll receive an order confirmation email.

This means:

  • we’ve received your order
  • your payment method has been pre-authorized

Once your order is in our system, we verify:

  • product availability
  • inventory status with our suppliers

If an item is unavailable or backordered, we will:

  • void the pre-authorization
  • contact you promptly to discuss alternatives

If your item is in stock and ready to ship (typically within 3–5 business days), your order will be processed and prepared for shipment.


Order Shipment

Orders that are in stock will typically ship within 3 business days.

You will receive a shipping confirmation email with tracking details within 24 hours of your order leaving the warehouse.

If you do not receive tracking information within 4 business days, please contact us at:

👉 support@clearflowpoolsupply.com 


Shipping Scope

We currently ship to customers within the United States.

Due to the size and nature of many pool equipment products, some orders may ship via freight carriers. Delivery times may vary depending on location and product availability.


International Orders

At this time, our products are designed and configured for the U.S. market, operating on 110V electrical systems and meeting U.S. safety standards.

We may be able to accommodate international orders on a case-by-case basis.
If you are located outside the United States, please contact us to request a custom shipping quote.


Damaged Shipments

Please inspect your order upon delivery.

If you notice any damage:

  • note it with the carrier before signing
  • or refuse the delivery if damage is severe

If you accept the delivery:

👉 Take clear photos of:

  • the packaging
  • the damaged product

Then email us immediately at:

👉 support@clearflowpoolsupply.com

We will work with you quickly to resolve the issue.


Returns

For full details on returns, please visit our Returns Policy page.

Why Buy from Us

Why Buy From Us

We understand—you have options when it comes to buying pool equipment online.

At ClearFlow Pool Supply, our goal is simple:

👉 provide reliable products
👉 offer a straightforward buying experience
👉 and support you every step of the way

Here’s what sets us apart.


Free Shipping Across the U.S.

No hidden fees. No surprises.

All orders ship free within the United States, including large and heavy equipment.


Competitive Pricing

We work to offer strong, competitive pricing across our entire catalog.

If you find the same product available online at a lower total price, feel free to reach out—we’re happy to review it.


30-Day Return Policy

If your product isn’t the right fit, we offer a 30-day return window.

We aim to make the process as simple and straightforward as possible.
(See our Returns Policy for full details.)


Reliable Equipment

We focus on products that matter:

  • durable
  • proven
  • built for long-term use

Our goal is to help you avoid the frustration of unreliable or low-quality equipment.


Customer-Focused Support

We’re here to help before and after your purchase.

Whether you’re:

  • replacing a component
  • upgrading your system
  • or choosing equipment for the first time

👉 we’re here to make the process easier


Our Commitment

We stand behind what we sell.

If something isn’t right, we’ll work with you to resolve it quickly and fairly.


Price Match Policy

If you find the same product offered at a lower total price (including shipping), contact us at:

👉 support@clearflowpoolsupply.com

We’ll review the offer and do our best to match it.

Description
✓ Authorized Dealer ✓ Free Shipping ✓ Manufacturer Warranty ✓ Expert Support

The Hayward Universal H-Series Natural Gas Heater with OmniX 400K is engineered for easy drop-in replacement with direct compatibility to Hayward plumbing adapters. 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 natural gas heater built for pool applications where OmniX automation integration is required. Backed by a 2-year parts and 1-year labor 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

OmniX Embedded Intelligence

Enhanced programmability, advanced diagnostics, and seamless remote connectivity built in.

Hayward Universal Display

Consistent, intuitive control experience compatible with Omni, OmniX, and competitive automation systems.

400,000 BTU Natural Gas

Maximum-capacity gas heating for large pool applications.

Drop-In Replacement Design

Engineered for easy replacement with direct compatibility to Hayward plumbing adapters.

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 Omni or OmniX automation systems
  • Drop-in replacement installations compatible with existing Hayward plumbing adapters
  • Anyone who needs 400K BTU natural gas heating with integrated automation intelligence
  • Facilities requiring advanced remote diagnostics and programmability

Specifications

Heating Performance

BTU Output 400,000 BTU
Fuel Type Natural Gas

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 Natural Gas Heater with OmniX 400K
  • User Manual

Warranty

The Hayward H-Series with 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 OmniX?

OmniX is Hayward's advanced pool automation platform. When embedded in the heater, it enables enhanced programmability — scheduling, setpoints, diagnostics — and seamless remote connectivity via the OmniX ecosystem. The Universal Display also ensures compatibility with standard Omni systems and even competitive automation platforms.

Is this a drop-in replacement for existing Hayward heaters?

Yes. The H-Series HS400FDN is engineered for easy drop-in replacement with direct compatibility to Hayward plumbing adapters, making it suitable for upgrading existing Hayward heater installations without major replumbing.

Does it work with non-Hayward automation systems?

Yes. The Hayward Universal Display is designed to deliver a consistent control experience across Omni, OmniX, and competitive automation systems — so it can integrate into existing third-party control environments.

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 must perform the installation to ensure safety, local code compliance, and warranty validity.

Shipping

Shipping Policy

At ClearFlow Pool Supply, we keep things simple.

👉 Free shipping on all orders within the United States.
No hidden fees. No surprises.


Order Confirmation

As soon as you place your order, you’ll receive an order confirmation email.

This means:

  • we’ve received your order
  • your payment method has been pre-authorized

Once your order is in our system, we verify:

  • product availability
  • inventory status with our suppliers

If an item is unavailable or backordered, we will:

  • void the pre-authorization
  • contact you promptly to discuss alternatives

If your item is in stock and ready to ship (typically within 3–5 business days), your order will be processed and prepared for shipment.


Order Shipment

Orders that are in stock will typically ship within 3 business days.

You will receive a shipping confirmation email with tracking details within 24 hours of your order leaving the warehouse.

If you do not receive tracking information within 4 business days, please contact us at:

👉 support@clearflowpoolsupply.com 


Shipping Scope

We currently ship to customers within the United States.

Due to the size and nature of many pool equipment products, some orders may ship via freight carriers. Delivery times may vary depending on location and product availability.


International Orders

At this time, our products are designed and configured for the U.S. market, operating on 110V electrical systems and meeting U.S. safety standards.

We may be able to accommodate international orders on a case-by-case basis.
If you are located outside the United States, please contact us to request a custom shipping quote.


Damaged Shipments

Please inspect your order upon delivery.

If you notice any damage:

  • note it with the carrier before signing
  • or refuse the delivery if damage is severe

If you accept the delivery:

👉 Take clear photos of:

  • the packaging
  • the damaged product

Then email us immediately at:

👉 support@clearflowpoolsupply.com

We will work with you quickly to resolve the issue.


Returns

For full details on returns, please visit our Returns Policy page.

Why Buy from Us

Why Buy From Us

We understand—you have options when it comes to buying pool equipment online.

At ClearFlow Pool Supply, our goal is simple:

👉 provide reliable products
👉 offer a straightforward buying experience
👉 and support you every step of the way

Here’s what sets us apart.


Free Shipping Across the U.S.

No hidden fees. No surprises.

All orders ship free within the United States, including large and heavy equipment.


Competitive Pricing

We work to offer strong, competitive pricing across our entire catalog.

If you find the same product available online at a lower total price, feel free to reach out—we’re happy to review it.


30-Day Return Policy

If your product isn’t the right fit, we offer a 30-day return window.

We aim to make the process as simple and straightforward as possible.
(See our Returns Policy for full details.)


Reliable Equipment

We focus on products that matter:

  • durable
  • proven
  • built for long-term use

Our goal is to help you avoid the frustration of unreliable or low-quality equipment.


Customer-Focused Support

We’re here to help before and after your purchase.

Whether you’re:

  • replacing a component
  • upgrading your system
  • or choosing equipment for the first time

👉 we’re here to make the process easier


Our Commitment

We stand behind what we sell.

If something isn’t right, we’ll work with you to resolve it quickly and fairly.


Price Match Policy

If you find the same product offered at a lower total price (including shipping), contact us at:

👉 support@clearflowpoolsupply.com

We’ll review the offer and do our best to match it.