Part # 6HI-HL-120

Alternate Part #'s LGM6HIHL120

Product Description

Baptistry Immersion Water Heater

Construction Features

  • Immersion section of the unit made of Incoloy Stainless Steel.
  • All heat confined to the formed horizontal section for optimum heat efficiency.
  • Cold riser extends to the top of the container where control housing is located.
  • 3-Conductor cord set with polarized plug included for easy installation and wiring at no extra charge.
  • Adjustable vapor-proof thermostat control with temperature range off - 55°F to 115°F (± 3°).
  • Hi-Limit cut out switch set at 125°F (±4°).
  • Stainless steel mounting bracket also supplied for easy mounting.
  • Pilot light and on-off switch provided indicates desired temperature when reached and breaks the circuit when the element is not in use. Saves electricity - Saves money.


  • Completely automatic and portable - just plug in the 60" Power Cord and operate.
  • No cutting or damage to your present container.
  • Although portable - your container may be cleaned without removing unit.
  • Unit can be suspended in middle, end or side of container.
  • No contractors required for ease of installation.
  • The 6HI-HL-120 (1.5KW) will heat 20 GPH (40° R). A 100 to 200 gallon Baptistry can be heated in 5 to 10 hours, or one-half this time for 20 degree rise in temperature.
  • Heater must be used with a GFCI to comply with NEC codes

?     Asked on 5/10/2013by Guest

Would the Baptistry Heater, model 6HI-HL-120, heat a bathtub full of water?

A  Answered on 5/10/2013 by InyoPools Product Specialist Patrick P.

The Little Giant 6HI-HL-120 can raise 100-200 gallons 40 degrees in 5-10 hours.

?     Asked on 3/28/2015by Inyo Visitor

what voltage required ?

A  Answered on 3/30/2015 by InyoPools Product Specialist Andy O.

The 6HI-HL-120 is a 120 volt system.

?     Asked on 7/13/2016by Vince

Can this heater heat above ground pool that is 9'X18' X4' deep. If it could how long would it take to heat the pool an additional 10 degrees?

A  Answered on 7/13/2016 by InyoPools Product Specialist Alan M.

This type of heating system would not be recommended for an Above Ground Pool.

?     Asked on 10/2/2016by Inyo Visitor

17,000 gallon pool? thoughts?

A  Answered on 10/3/2016 by InyoPools Product Specialist Alan M.

The Baptistry Heater is designed to heat a body of water that is 100-200 gallons. This will not be an effective way to heat a 17,000 gallon pool.

?     Asked on 3/13/2019by Jay

Can you tell me the NEMA plug configuration for this as well as the required NEMA receptacle configuration to use this unit? Thanks!

A  Answered on 3/14/2019 by InyoPools Product Specialist Lennox H.

Hi, Jay. Unfortunately, we do not have that info. I would recommend that you contact Little Giant at 800-231-6035.