400,000 BTU Pool Heaters

 400,000 BTU Pool Heaters

For pool owners who don’t want to wait and enjoy a heated pool, or need an extra boost of power, 400,000 BTU pool heaters will get the job done in a pinch. These heavy-duty heaters are designed for heating speed and efficiency. And despite the power, a few of the 400,000 BTU heaters at Pool Express are designed to be eco-friendly, for the environmentally conscious pool owner.Swimming pool heaters are rated according to a measurement known as British Thermal Units, or BTU. One BTU is capable of raising the temperature of 1lb of water by 1 degree Fahrenheit. This means the more BTUs a pool heater produces, the faster it will heat the water in your swimming pool. And 400,000 BTUs is more than enough power. Pool heaters with 400,000 BTUs are a safe bet to quickly heat any sized swimming pool. The pool heater should always be somewhat higher than the actual pool surface area, and the desired temperature rise required. But because there’s no such thing as “oversizing” a pool heater, pool owners typically choose a 400K BTU heater for their fast heating speed. 

Hayward Natural Gas Pool Heater Uni H-Series 400K BTU H400FDN

The Universal H-Series Heater is the world-class heater with an Earth-friendly conscience. While all Hayward H-Series heaters are energy-efficient, the Universal H-Series Low NOx heater has an 83-84 p

$2,721.75
Jandy Propane Pool Heater 400K BTU Copper LXI400P

Jandy LXi - The Next Generation in Heating Technology Integrating the most advanced features in every aspect, from superior hydraulic design, lightest and strongest composite material constructio

$2,670.00 $2,225.00
Pentair MasterTemp Propane Pool Heater 400K BTU 460737

Pentair MasterTemp is the definition of Fast, efficient, compact, quite, safe and eco-friendly. No matter what your criteria for top performance and value, MasterTemp meets them all. No matter w

$2,736.50
Raypak RP2100 Natural Gas Pool Heater 399K BTU 009965

The Raypak RP-2100 gives you that endless summer you've always dreamed about. Your pool and spa is a long-term investment that you, your family and friends will enjoy year after year. Now, there's an

$2,447.25
Raypak RP2100 Propane Pool Pool Heater 399K BTU 009977

The Raypak RP-2100 gives you that endless summer you've always dreamed about. Your pool and spa is a long-term investment that you, your family and friends will enjoy year after year. Now, there's an

$2,435.50
Jandy Natural Gas Pool Heater 400K BTU LXI400N

Jandy LXi - The Next Generation in Heating Technology Integrating the most advanced features in every aspect, from superior hydraulic design, lightest and strongest composite material construction

$2,890.75
Raypak RP-2100 Natural Gas Pool Heater 399K BTU 009243

The Raypak RP-2100 gives you that endless summer you've always dreamed about. Your pool and spa is a long-term investment that you, your family and friends will enjoy year after year. Now, there's an

$2,653.50
Hayward Propane Pool Heater 400K BTU H400FDP

The Universal H-Series Heater is the world-class heater with an Earth-friendly conscience. While all Hayward H-Series heaters are energy-efficient, the Universal H-Series Low NOx heater has an 83-84 p

$2,733.25
Raypak Natural Gas Commercial Pool Heater Low NOx ASME 400K BTU 009295

Why Your Commercial Pool Heater Should be ASME? Some local codes require that commercial pools, public pools, condo pools, apartment pools or other commercial swimming pools be ASME certified. ASME

$2,949.38
Raypak Natural Gas Commercial Pool Heater ASME 400K BTU  009271

Why Your Commercial Pool Heater Should be ASME? Some local codes require that commercial pools, public pools, condo pools, apartment pools or other commercial swimming pools be ASME certified. ASME

$2,924.00
Raypak RP-2100 Natural Gas Pool Heater 399K BTU 009219

The Raypak RP-2100 gives you that endless summer you've always dreamed about. Your pool and spa is a long-term investment that you, your family and friends will enjoy year after year. Now, there's an

$2,447.25
Sta-Rite Max-E-Therm Natural Gas Pool Heater 400K BTU SR400NA

For indoor or outdoor installations on pools and spas. Features include an LED temperature readout with dual thermostat controls, temperature safety lockout, and 6-position control panel. PMG burner t

$2,736.50

Controlling the temperature of your swimming pool is essential to extend your swim season and the time you spend enjoying the water. Keep in mind that the larger the BTU output of the pool heater, the quicker it will heat your pool water. That’s why we have such a large selection of 400K BTU heaters on hand.

The 400K BTU heaters at Pool Express are available in natural gas and propane. A few are equipped with low NOx for fewer emissions and an environmentally friendly alternative. Be sure there is a connection available for your gas and propane heating setup, and check the availability of these products in your area.

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