HydroQuip Platinum Series, 4.0kw 115v/230v flo-thru heater. The tube measures 15" x 2" and comes complete with a 60" cord and pressure switch. For use exclusively with the HydroQuip Platinum series electronically switched control systems featuring slide heater technology.
For use with HydroQuip Platinum Plus Y series control systems
This heater is designed for use in spas and hot tubs with HydroQuip Platinum Plus Y series control systems. It is a 4.0 kW heater, which means it can heat up to 400 gallons of water by 40 degrees Fahrenheit. The heater is made of stainless steel and has a flo-thru design, which means that the water flows through the heater element directly. This helps to ensure that the water is heated evenly. The heater also has an Incoloy coated heater element, which is more resistant to corrosion than other types of heater elements.
The 48-PS40 heater also features integrated dry-fire protection, which means that the heater will automatically shut off if the water flow is interrupted. This helps to prevent the heater from overheating and being damaged.
The 48-PS40 heater is a good choice for spas and hot tubs that need a reliable and efficient heater. It is also a relatively affordable option.
Here are some additional tips for choosing a hot tub heater:
The size of the heater should be based on the size of the spa or hot tub. A rule of thumb is to get a heater that is rated for 1.5 kW per 100 gallons of water.
The voltage of the heater should match the voltage of the spa or hot tub.
The heater should be made of a durable material, such as stainless steel.
The heater should have a flow-through design to ensure that the water is heated evenly.
The heater should have an Incoloy-coated heater element to resist corrosion.
The heater should have dry-fire protection to prevent damage.
Part ID 48-PS40 (and its variants like 48-PS40-S, 48-PS40-SB, and 48-PS40-SA) refers to a Hydro-Quip Platinum Series 4.0kW Flo-Thru Heater . This part is a specialized component used primarily in Hydro-Quip Platinum Series electronically switched control systems.
Because Hydro-Quip is a major OEM manufacturer that designs and private labels custom equipment, this heater is used as an original or high-quality retrofit part for a wide variety of spa brands.
Spa Manufacturers Using This Part
The following brands are known to have used Hydro-Quip control systems or this specific heater assembly in various models:
Artesian Spas
Balboa Water Group (often used as a reliable retrofit for certain Balboa systems)
Bullfrog Spas
Cal Spas
Caldera Spas
Catalina Spas
Gecko Alliance (compatible with specific Gecko systems)
Jacuzzi
Marquis Spas
Master Spas
Sundance Spas
ThermoSpas
Key Specifications for 2025
Power: Typically rated at 4.0kW / 240V, but can also operate as 1.0kW / 115V depending on the wiring configuration.
Dimensions: Standard housing is 15 inches long with a 2-inch diameter.
Technology: Features "Slide Heater" technology, allowing for easier serviceability.
Compatibility: Some versions (like the 48-PS40-SB ) include dual Balboa M7 sensors, while others (like the 48-PS40-S) use a pressure switch.
