By Hayward Pool Products



Part # W3H200FDP

Warranty 1 Year

Alternate Part #'s HAYW3H200FDP, HPPW3H200FDP

Product Description

Universal H-Series Low NOx Heaters
For In-Ground Pools and Spas - Electronic Ignition Dual Thermostat

Now With Cupro Nickel Heat Exchanger!

NEW Hayward Universal H-Series Low NOx heater combines industry-leading hydraulic performance; environmentally responsible low NOx emissions and a standard cupro nickel heat exchanger with a low profile appearance, lighter weight design, independent left or right side electric, water and gas connections plus 2" x 2 1/2" CPVC union connections to provide the ultimate installation flexibility for new or existing equipment pads.

It also includes a forced draft system that constantly moves air through the combustion chamber at a precise flow rate. As a result, all outside weather variables that can affect the heating performance, such as wind conditions, are eliminated - without having to install a high-wind stack.

NOTE: The Hayward Universal H-Series heaters meet the NOx Emission standards set by the California South Coast Quality Air Management Commission for 2001 and the Texas Natural Resource Conservation Commission Code.


  • Forced draft system constantly moves air through the combustion chamber at a precise flow rate, eliminating all outside weather variables that can effect the heating performance, such as high wind conditions -- without a high wind stack.
  • Our patented single header "V" baffle design heat exchangers allow for long life, fast heating and virtually no condensation. All Hayward heat exchangers are now constructed with highly resilient Cupro Nickel for greater durability and longevity even in salt-based, high flow or aggressive water chemistry set ups.
  • Easy-to-read L.E.D. digital Control Panel provides digital temperature readout and diagnostics for quick identification of components that might need service.
  • New polymer header provides superior hydraulic performance to save energy and protect against the damaging effects of erosion from high flow conditions for improved reliability.
  • Designed for today's larger diameter plumbing systems with 2" x 2 1/2" CPVC unions.
  • 1 Year limited warranty
  • Now with Cupro Nickel Heat Exchanger

Overall Dimensions

Product Specifications

200,000 BTU
154 lbs.
24-3/4 in.
0-10,000 ft.
Heat Exchanger:
Low NOx
Heater Type:

?     Asked on 4/21/2015by George

I want to install the Hayward Lownox heater on my pool but I live in the mountains at 3,000 foot elevation; do I need to buy a special high elevation heater?

A  Answered on 4/21/2015 by InyoPools Product Specialist Matt S.

Hello George, The Hayward Universal Low Nox are self adjusting up to 10,000 feet of elevation. Any installation above 2,000 feet will require a special restriction plate to be installed. Luckily, that plate comes standard with every heater so no need to purchase it separately.

?     Asked on 5/8/2015by Jim

I have h200pi ser 27g19913 Iam looking to replace with a Hayward h200fdp will my water lines screw on this header or do I need new or do they come with a new heater

A  Answered on 5/9/2015 by InyoPools Product Specialist Patrick P.

Hi Jim the image here shows the exact Dimensions of the Hayward H200FDP Heater. I do not have the exact dimensions for the Hayward H200P1 heater but you should be able to match the location of the plumbing ports H200FDP to your H200P1 plumbing ports to see if you will have any slight re-plumbing. The H200FDP has 2" x 2-1/2" unions meaning that the heater accomodates 2" or 2-1/2" plumbing, if you have 1-1/2" plumbing that will be fine but you will just need to buy a standard 1-1/2" reducer.

?     Asked on 11/28/2015by Duke

Wil the 200,000 btu series h low univ. heat a swimming pool 24 ft. long by 18 ft. wide 5 ft. deep. If so how many degrees in 1 hr. will it go up? Thank you, Duke

A  Answered on 12/7/2015 by InyoPools Product Specialist Lennox H.

Hi Duke, Based on the surface are of your pool this unit can heat your pool about 1 degree per hour.

?     Asked on 12/10/2015by vic legaspi

i just want to know the size of tube for the supply of propane gas , we used 200k btu propoane heater

A  Answered on 12/11/2015 by InyoPools Product Specialist Brian M.

I spoke to the technicians at Hayward ( 908-355-7995 ) and was told that the line into the valve was 3/4". The size of the tube up to that connection point, however, depends on how far the line has to run from the supply to the heater itself. This would be determined by the licensed installer.

?     Asked on 5/20/2018by Wagdy Moussa

I have the exact same unit, was working great, I had it for 3 years, then started leaking from inside from metal parts , is it true that leak is unfix able and if it can be fixed

A  Answered on 5/21/2018 by InyoPools Product Specialist Lennox H.

Hi, Wagdy. That is correct. It cannot be repaired, you will have to replace the Heat Exchanger - FDXLHXA1200


Review Summary

 (Average 5  out of 5 stars)
1 Ratings
5 star:
4 star:
3 star:
2 star:
1 star: