Model # LJ400P

Alternate Part #'s JDYLJ400P, LAR-15-609

Product Description

This heater is built for dependability and efficiency. At the heart of its efficiency is an ingenious combustion chamber, surrounded by a super-efficient ceramic fiber that works better than any other insulation material.

Laars has some of the most reliable products in the industry. When you buy a Laars pool and spa heater - you buy quality, convenience and a name you can trust.

PVC hook-up. Easily connects to AquaLink RS digital controls.

The efficiency of the Laars Lite2’s copper heat exchanger and Flo-Thru; baffles allow for efficient heat transfer, lowering your operating costs and extending your swimming season!

Weather resistant jacketing is designed for harsh wind and rain conditions. Vent cap further enhances performance in severe weather conditions.

LD model has self-cleaning, hot surface ignition which provides quick start-up every time and prevents sooting. No burner tray removal required (LD) and igniter easily replaced with one screw.

Ceramic fiber combustion chamber (instead of fire bricks) contribute to a lighter weight and more compact design.

There are over a million Laars heaters installed world-wide. This heater has undergone over a year of rigorous field testing (15,000 cycles and environmental testing done to military standards).

Protects thermostats from corrosion or shorting.


?     Asked on 1/16/2012by Guest

Will a gas heater operate at the low speed of a dual speed motor?

A  Answered on 1/16/2012 by InyoPools Product Specialist Patrick P.

Probably not - Most gas heater will shut off at low GPM levels (20-40) to keep the heater cores from overheating - 20 for 200 BTUs, 40 for 400 BTUs. Depending on your pool system you might get these GPM levels at the low speed but generally these heaters must be run at the motor's high speed.

?     Asked on 11/17/2015by Tony

Are any parts available for this unit? and if so I am interested in display board, also a flame sensor.

A  Answered on 11/17/2015 by InyoPools Product Specialist Robert M.

Hello Tony - You can find all of the available parts on the Laars Lite 2 LJ Series Parts Page.

?     Asked on 9/12/2017by chris

igniter for heater went out - Jandy LJ400P serial E03PL2736...what is the part number I need? thank you

A  Answered on 9/12/2017 by InyoPools Product Specialist Patrick P.

Hi Chris, You would need this R0367100 Ignitor for your LJ400P heater.