Hayward Universal H-Series Pool Heater H400FDN
Original price was: $2,999.00.$1,499.00Current price is: $1,499.00. USD USD
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On every order, no minimum
On every order, no minimum
Fast Dispatch
Ships in 1–2 business days
Ships in 1–2 business days
Delivery 4–7 Days
Tracked to your door
Tracked to your door
15-Day Returns
No restocking fees
No restocking fees
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High demand — selling faster than usual. Order today for dispatch within 1–2 business days.
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- Total Delivery Time: 4–7 Business days
- 90 Days Return Window
- Secure Payments
🔥 Core Specs
- Model: H400FDN (also W3H400FDN newer number)
- Heating Capacity: 400,000 BTU/hr
- Fuel Type: Natural Gas
- Ignition: Electronic (IID – no pilot light)
- Emissions: Low NOx (environmentally compliant)
🏊 What size pool it’s for
- Ideal for:
- 20,000 to 40,000+ gallon pools
- Large spas + pool combo setups
- Very fast recovery heater:
- Can raise temp roughly 1–2°F per hour depending on conditions
⚙️ Key Features
🔩 Heat exchanger (big advantage)
- Cupro-nickel heat exchanger
- Excellent for:
- Saltwater pools
- Hard water conditions
- Long-term corrosion resistance
🌊 Hydraulic efficiency design
- “Totally Managed Flow” system
- Reduces pump runtime (up to ~18% savings claimed)
- Improves heating efficiency by balancing water flow through tubes
⚡ Controls & electronics
- Digital LED control panel
- Self-diagnostics (error codes like IF, LO, HS)
- Compatible with pool automation systems
🌬️ Combustion system
- Forced-draft design (blower-assisted)
- Stable heating even in windy conditions