How long does it take to heat up a 400 gallon hot tub?

For a 400 gallons pool, an 3KW pool heater takes about 3.5h to raise the temperature by 41 degrees ℉. 7.3h to raise the temperature by 50 degrees ℉.

What is the largest size pool it works on?

Hello there, capacity between 250 and 500 gallons is appropriate. Although pools over 500 gallons are available, but the pool heater may not achieve effective heating.

What gallon per hour pump is recommended?

Hi there, it is recommended to use a 1/2 hp water pump with the pool heater.

Will the red light go on if there's no water in it? I want to test it before I run water through it

Hello there, we recommend that you run the water first before starting the pool heater, if you do not run the water to open the heater, the light will be on, but it will dry out. It is not conducive to the long-term use of the item.

Hot Tub Heater 3kw 220v Electric Pool Spa Heater Water

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 412.97

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Heat your haven, hassle-free! 💧

HIGH TEMP AUTO SHUTOFF - Stops heating at 50°C to prevent overheating and ensure long-lasting durability.
OPTIMIZED FOR MEDIUM POOLS - Ideal for pools and spas up to 500 gallons, delivering consistent warmth for your personal oasis.
SMART SELF HEATING CONTROL - Automatically maintains your perfect spa temperature without lifting a finger.
SAFETY FIRST DRY BURN PREVENTION - Pressure switch cuts power instantly if water flow drops, protecting your heater and peace of mind.
VERSATILE PLUMBING COMPATIBILITY - Includes dual PVC connectors (48mm & 50mm) for seamless integration with your 1.5-inch SCH 40 pipes.

The Mxmoonant Hot Tub Heater is a 3KW, 220V electric pool and spa heater designed for pools up to 500 gallons. Featuring smart thermostat control, dry burn prevention via a pressure switch, and high temperature auto shutoff at 50°C, it ensures safe, efficient, and reliable heating. Equipped with dual PVC pipe connectors for easy installation, this heater is perfect for creating a cozy, warm spa experience with professional-grade safety features.

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