Pool Supplies > Pool Heaters

Refine Search

Availability

In Stock (144)

Price

Rating

5 Stars (5)
4 Stars (8)
3 Stars (8)

Sub Category

Pool Type

Heat Output

Fuel Type

Heat Exchanger

Copper (66)
Cupro-Nickel (33)
Incoloy (21)
Titanium (27)

Controls

Analog (35)
Digital (133)

Installation Type

Commercial (ASME) (18)
Residential (151)

Ignition

Electronic (149)
Millivolt (13)

Voltage

110V (21)
220V (62)
440V (18)

Emission

Low NOx (56)
Standard (103)

Altitude

High Altitude (4)
Sea Level (149)

Amp Draw

Hayward H400FDN Universal H-Series, Low NOx, 400,000 BTU, Natural Gas, Pool and Spa Heater - H400FDN

Product Rating:

( 1 review) | Write a Review

The Hayward Universal H-Series Low NOx 400,000 BTU Natural Gas Pool and Spa Heater is an eco-friendly heater built for energy savings and reliability.

$1,874.99

Regular Price: $2,099.99

Sku #: H400FDN

Free Shipping on this item

Hayward H400FDN Universal H-Series, Low NOx, 400,000 BTU, Natural Gas, Pool and Spa Heater Sku #: H400FDN (1 rating)	Pentair 460736 MasterTemp, Low NOx, 400,000 BTU, Natural Gas, Pool and Spa Heater Sku #: 460736 (2 ratings)	Raypak ASME Millivolt Commercial Pool Heater with Copper Heat Exchanger, Millivolt Ignition, and Digital Thermostat 28 Options Available	Jandy LRZ400EP Legacy LRZ 399,000 BTU, Digital, Propane Gas, Polymer Header Pool and Spa Heater Sku #: LRZ400EP (1 rating)
Price: $1,874.99 Free Shipping!	Price: $1,854.99 Free Shipping!	Price: as low as $1,641.99 Free Shipping!	Price: $1,840.99 Free Shipping!

Jandy LRZ325EPH Legacy LRZ 325,000 BTU, Digital, Propane Gas, Polymer Header Pool and Spa Heater for 5,000-10,000' Elevations Sku #: LRZ325EPH	Raypak ASME Digital Cupro-Nickel Commercial Pool Heater with Copper Heat Exchanger, Electronic Ignition, Digital Thermostat 28 Options Available	Hayward H400FDP Universal H-Series, Low NOx, 400,000 BTU, Propane Gas, Pool and Spa Heater Sku #: H400FDP	Jandy LRZ250ENN Legacy LRZ 250,000 BTU, Digital, Natural Gas, Cupro-Nickel Tubes, Polymer Header Pool and Spa Heater Sku #: LRZ250ENN
Price: $1,835.99 Free Shipping!	Price: as low as $1,826.99 Free Shipping!	Price: $1,805.99 Free Shipping!	Price: $1,788.99 Free Shipping!

Coates 32430CPH CPH Series 73 Amp Three Phase Pool Heater, 240V Sku #: 32430CPH	Hayward H300FDP Universal H-Series, Low NOx, 300,000 BTU, Propane Gas, Pool and Spa Heater Sku #: H300FDP	Pentair 460734 MasterTemp, Low NOx, 300,000 BTU, Natural Gas, Pool and Spa Heater Sku #: 460734	Coates 34830CPH CPH Series 30kW, 480V, 37 Amp, Three Phase, Pool Heater Sku #: 34830CPH
Price: $1,772.99 Free Shipping!	Price: $1,770.99 Free Shipping!	Price: $1,745.99 Free Shipping!	Price: $1,741.99 Free Shipping!

Jandy LRZ250EPN Legacy LRZ 250,000 BTU, Digital, Propane Gas, Cupro-Nickel Tubes, Polymer Header Pool and Spa Heater Sku #: LRZ250EPN	Coates 32424CPH CPH Series 58 Amp Three Phase, Pool Heater for 240V Sku #: 32424CPH	Jandy LXi250N LXI, Low NOx, 250,000 BTU, Natural Gas, Polymer Header Pool and Spa Heater Sku #: LXi250N	Sta-Rite SR333LP Max-E-Therm, Low NOx, 333,000 BTU, Propane Gas, Pool and Spa Heater Sku #: SR333LP
Price: $1,740.99 Free Shipping!	Price: $1,738.99 Free Shipping!	Price: $1,728.99 Free Shipping!	Price: $1,728.99 Free Shipping!

Coates 32030CPH CPH Series 30kW, 208V, 84 Amp, Three Phase, Pool Heater Sku #: 32030CPH	Coates 34824CPH CPH Series 24kW, 480V, 29 Amp, Three Phase, Pool Heater Sku #: 34824CPH	Jandy LRZ325EN Legacy LRZ 325,000 BTU, Digital, Natural Gas, Polymer Header Pool and Spa Heater Sku #: LRZ325EN	Hayward H300FDN Universal H-Series, Low NOx, 300,000 BTU, Natural Gas, Pool and Spa Heater Sku #: H300FDN (1 rating)
Price: $1,722.99 Free Shipping!	Price: $1,712.99 Free Shipping!	Price: $1,708.99 Free Shipping!	Price: $1,700.99 Free Shipping!

Sta-Rite SR200HD Max-E-Therm, Low NOx, 200,000 BTU, Natural Gas, Heavy Duty, Cupro-Nickel, Pool and Spa Heater Sku #: SR200HD	Sta-Rite SR333NA Max-E-Therm, Low NOx, 333,000 BTU, Natural Gas, Pool and Spa Heater Sku #: SR333NA	Hayward H350FDP Universal H-Series, Low NOx, 350,000 BTU, Propane Gas, Pool and Spa Heater Sku #: H350FDP	Jandy LRZ325MP Legacy LRZ 325,000 BTU, Millivolt, Propane Gas, Polymer Header Pool and Spa Heater Sku #: LRZ325MP
Price: $1,700.99 Free Shipping!	Price: $1,699.99 Free Shipping!	Price: $1,693.99 Free Shipping!	Price: $1,686.99 Free Shipping!

Raypak 013809F Commercial R408A Natural Gas Heater Cupro-Nickel Heat Exchanger Sku #: 013809F	Jandy LRZ325MN Legacy LRZ 325,000 BTU, Millivolt, Natural Gas, Polymer Header Pool and Spa Heater Sku #: LRZ325MN	Coates 32024CPH CPH Series 24kW, 208V, 67 Amp, Three Phase, Pool Heater Sku #: 32024CPH	Pentair 460731 MasterTemp, Low NOx, 200,000 BTU, Propane Gas, Pool and Spa Heater Sku #: 460731
Price: $1,678.99 Free Shipping!	Price: $1,675.99 Free Shipping!	Price: $1,670.99 Free Shipping!	Price: $1,669.99 Free Shipping!

Jandy R0470705 LRZE400 Heat Exchanger with Bronze Headers Sku #: R0470705	Pentair 460735 MasterTemp, Low NOx, 300,000 BTU, Propane Gas, Pool and Spa Heater Sku #: 460735	Hayward H350FDN Universal H-Series, Low NOx, 350,000 BTU, Natural Gas, Pool and Spa Heater Sku #: H350FDN	Jandy LRZ125EPC Legacy LRZ 125,000 BTU, Digital, Propane Gas, Bronze Headers, Copper Tubes, ASME Certified Pool and Spa Heater Sku #: LRZ125EPC
Price: $1,659.99 Free Shipping!	Price: $1,656.99 Free Shipping!	Price: $1,632.99 Free Shipping!	Price: $1,632.99 Free Shipping!

Jandy LRZ325EP Legacy LRZ 325,000 BTU, Digital, Propane Gas, Polymer Header Pool and Spa Heater Sku #: LRZ325EP	Jandy LXi250P LXI, Low NOx, 250,000 BTU, Propane Gas, Polymer Header Pool and Spa Heater Sku #: LXi250P	Jandy LRZ250EP Legacy LRZ 250,000 BTU, Digital, Propane Gas, Polymer Header Pool and Spa Heater Sku #: LRZ250EP	Jandy LRZ175ENC Legacy LRZ 175,000 BTU, Digital, Natural Gas, Bronze Headers, Copper Tubes, ASME Certified Pool and Spa Heater Sku #: LRZ175ENC
Price: $1,625.99 Free Shipping!	Price: $1,596.99 Free Shipping!	Price: $1,596.99 Free Shipping!	Price: $1,589.99 Free Shipping!

Coates 32418CE CE Series 44 Amp Three Phase Pool and Spa Heater, 240V Sku #: 32418CE	Jandy LRZ175EPN Legacy LRZ 175,000 BTU, Digital, Propane Gas, Cupro-Nickel Tubes, Polymer Header Pool and Spa Heater Sku #: LRZ175EPN (1 rating)	Coates 12415CE CE Series 15kW, 240V, 63 Amp, Single Phase, Pool and Spa Heater Sku #: 12415CE	Jandy LRZ250MN Legacy LRZ 250,000 BTU, Millivolt, Natural Gas, Polymer Header Pool and Spa Heater Sku #: LRZ250MN
Price: $1,585.99 Free Shipping!	Price: $1,568.99 Free Shipping!	Price: $1,563.99 Free Shipping!	Price: $1,553.99 Free Shipping!

Raypak Digital Copper Pool Heater with Copper Heat Exchanger, Electronic Ignition, Digital Thermostat for Residential Pools 28 Options Available	Jandy LRZ250EN Legacy LRZ 250,000 BTU, Digital, Natural Gas, Polymer Header Pool and Spa Heater Sku #: LRZ250EN (1 rating)	Pentair 460730 MasterTemp, Low NOx, 200,000 BTU, Natural Gas, Pool and Spa Heater Sku #: 460730	Pentair 460733 MasterTemp, Low NOx, 250,000 BTU, Propane Gas, Pool and Spa Heater Sku #: 460733
Price: as low as $1,323.99 Free Shipping!	Price: $1,549.99 Free Shipping!	Price: $1,547.99 Free Shipping!	Price: $1,531.99 Free Shipping!

Pentair 460732 MasterTemp, Low NOx, 250,000 BTU, Natural Gas, Pool and Spa Heater Sku #: 460732	Hayward H250FDN Universal H-Series, Low NOx, 250,000 BTU, Natural Gas, Pool and Spa Heater Sku #: H250FDN (1 rating)	Sta-Rite SR200LP Max-E-Therm, Low NOx, 200,000 BTU, Propane Gas, Pool and Spa Heater Sku #: SR200LP	Jandy LRZ250MP Legacy LRZ 250,000 BTU, Millivolt, Propane Gas, Polymer Header Pool and Spa Heater Sku #: LRZ250MP
Price: $1,525.99 Free Shipping!	Price: $1,519.99 Free Shipping!	Price: $1,503.99 Free Shipping!	Price: $1,503.99 Free Shipping!

	Blog Resource Center	Read More
Jandy Pool Heater Comparison
Swimming Pool Heat Pump and Pool Heater Comparison Guide
Complete Pool Heater Comparison Chart Helps You Find Your Match

Above Ground Pools

Automatic Controls

Chemicals

Cleaners

Covers

Filters

Heat Pumps

Heaters

Lights

Liners

Maintenance

Motors

Parts

Pumps

Replacement Filter Cartridges

Replacement Salt Cells

Salt Chlorinators

See All Categories

Spa Parts

Spas / Hot Tubs

Alternative Sanitizers

Chemicals

Cover Lifts

Covers

Heaters

Jets

Lights

Mineral Sanitizing Systems

Ozonators

Pumps

Retrofit Kits

Steps

Vacuums

See All Categories

Hayward H400FDN Universal H-Series, Low NOx, 400,000 BTU, Natural Gas, Pool and Spa Heater - H400FDN