Universal H-Series Low NOx Heater 250K BTU - NG - W3H250FDN

$2,265.00

IN STOCK
FREE SHIPPING

Part # W3H250FDN

By Hayward Pool Products

  4.82 Average  

Details

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Part # W3H250FDN

Warranty 1 Year

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.

Applications:

  • 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

BTU:
250,000 BTU
Gas:
Natural
Ignition:
Electronic
Thermostat:
Dual
Weight:
165 lbs.
Width:
28 in.
Elevation:
0-10,000 ft.
Heat Exchanger:
Cupro Nickel
Special Feature:
Low NOx Emissions
Top

?     Asked on 5/10/2019 by Abel Oropesa

I have 13’x26’ ingrown pool, so what size of natural gas I will need to heater my pool ?? Thanks
 Reply

A  Answered on 5/10/2019 by InyoPools Product Specialist Lennox H.

Hi, Abel. To achieve at least 1 degree temperature increase an hour,  you will need at least a 200,000 BTU unit. A larger unit will provide you with a faster temperature increase. 
 Reply


?     Asked on 4/19/2019 by Cynthia Gaylog

what part do I use to convert a model H200fdp from outdoor to indoor
 Reply

A  Answered on 4/20/2019 by InyoPools Product Specialist Lennox H.

Hi, Cynthia. You will need to purchase an Indoor Vent Kit. They are different options based on the installation requirements. See pages 12-19 of the Hayward H-Series LoNox Installation Guide for more info. 
 Reply


?     Asked on 2/17/2019 by John Mills

My 17 year old H-200 went out last fall & I want to up grade to H-250 just want to make sure my 3/4 in gas line would be OK, I know the under ground line from meter is 1-1/2 yellow plastic ,I'm a Plumber in Indiana ,Another ? dose the heater come with union connections & will you ship to my house . Thanks John Mills.
 Reply

A  Answered on 2/19/2019 by InyoPools Product Specialist Ruth G.

Hello John, yes your plumbing will be fine to go with the H-250.  The heater does come with the union connections and we do ship to your house.
 Reply


?     Asked on 11/12/2018 by Thomas W Solberg

Hi, I live in Napa California. Solar no longer does the job of heating the pool because of our cedar trees have grown so much that they cover the roof where the panels are. It's time for a gas fired heater. Here are my questions: 1. I believe the pool holds about 22,000 gallons. It is "L-Shaped" about 36' at the longest and about 16"across at the long narrow. What size (in BTUs) will it take to heat it up? The more BTUs, the faster it will heat up?

 Reply

A  Answered on 11/12/2018 by InyoPools Product Specialist Lennox H.

Hi, Thomas. To heat your pool efficiently, a 250K BTU will be the starting size. The larger the unit, the faster it will heat. 
 Reply


?     Asked on 10/9/2018 by Daniel Romanski

Can i use this heater with a salt filtration system?
 Reply

A  Answered on 10/10/2018 by InyoPools Product Specialist Hector F.

Yes, these units come standard with a cupronickel heat exchanger making them compatible to be used with a saltwater swimming pool. 
 Reply


?     Asked on 6/10/2018 by Kathy Raby

We just bought a 250 btu propane hayward heater for our 33 ft by 18 ft above ground pool. We are planning on using a T at our tank and run another line because the one to house is only three eights. We are planning on running another line half inch at a distance of 110 feet. We are planning on using 1/2 inch iron pipe also for last 10 feet. What size should the second regulator be and how far should it be from the heater? Can we use the half iron pipe for the entire distance?
 Reply

A  Answered on 6/12/2018 by InyoPools Product Specialist Joe S.

Good day, at this time we are unable to advise on gas or propane installations. You or the installer would need to contact Hayward 908) 355-7995 (U.S.).
 Reply


?     Asked on 5/25/2018 by

The installation instructions state that you should not install the heater within 24" of any outdoor HVAC equipment. Is this a requirement or suggestion? What is the reason for this restriction? I do not see a similar restriction in the installation instructions for heaters from other manufacturers such as Raypak and Jandy.
 Reply

A  Answered on 5/26/2018 by InyoPools Product Specialist Lennox H.

Hi. This is a requirement. This unit draws air into the unit so that it can breathe or have adequate ventilation. If the unit is installed that close it will not be able to draw sufficient air into the unit suffocating it. 
 Reply


?     Asked on 5/24/2018 by

I am installing a 250,000btu Hayward pool heater outside. Installers said that since I am installing outside but close to windows I would need to vent upward passed the roofline. . I ordered the neg pressure kit (venting vertically). Do I need to use all the kit( tubing and switches) that come with the kit. Can I just used the bonnet assembly only?
 Reply

A  Answered on 6/8/2018 by InyoPools Product Specialist Andy O.

Hello- On page 18 of this link you can find the installation instructions for the vent kits: http://images.inyopools.com/cloud/documents/universalh-serieslownox.pdf.
 Reply


?     Asked on 5/20/2018 by

How will the H250FDN work at a 5,000 ft elevation?
 Reply

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

Hi. Yes, it can. You will need the Universal H-Series High Altitude Kit - FDXLHAK1930.
 Reply


?     Asked on 5/20/2018 by

Hi I have an old Hayward 250 that heats a pool 16 x 32. I would like to buy a new one but have noticed that the gas line might not be large enough. From the meter there is 50’ of 1” then it changes to 3/4” for another 50’. The old heater worked fine with this for many years. Do you think a new H 250 would work with this gas line or is there another heater that would. Thanks
 Reply

A  Answered on 5/23/2018 by InyoPools Product Specialist Patrick P.

Hi, I'm showing if you have a Two Stage Regulation System then you can use 1/2" gas line up to 150' from the outlet of the first regulator to the inlet of the 2nd regulator and then 3/4" gas line from the second regulator to the heater, not to exceed 10'. If you have a single stage regulator and you have 50' of 3/4" gas line then, unfortunately, you would need to go to a smaller 150,000 BTU heater like the Hayward 150,000 Universal Heater.
 Reply


?     Asked on 3/29/2018 by Gus Cerku

I have a 16' X 32' X 4' pool and I would like to know if I need a 200k or a 250k I'm leaning toward the 250K but is it too much?
 Reply

A  Answered on 3/29/2018 by InyoPools Product Specialist Kevin G.

Hello, I would recommend going with the H250FDN. Please be advised that you must have the proper gas line size in order for this to work. Please see page 22 of this manual to see if you meet the requirements. 
 Reply


?     Asked on 1/9/2018 by Mike

I work at hotel and our current heater for a 600 gallon indoor spa is starting to leak. It is a Pentair purex trion MiniMax 250. What size Hayward H series would you recommend. We maintain it at 102 degrees in a pool are that is constantly in the 80's.
 Reply

A  Answered on 1/9/2018 by InyoPools Product Specialist Lennox H.

Hi, Mike. You can use the H250FDNASME unit as a replacement for your old MiniMax 250. 
 Reply


?     Asked on 10/18/2017 by

what is the most energy efficient heater nat gas150-250,000 btus also my pool is about 17,000 gals what BTU system to use
 Reply

A  Answered on 10/18/2017 by InyoPools Product Specialist Andy O.

Hello- The best option to ensure year-round use of the pool would and efficiency would be the Hayward Pool Heater Universal H-Series, for the price I would go with the H250FDN if your gas line will accommodate that amount of BTU's.
 Reply


?     Asked on 10/8/2017 by ron

Can you please give me the thermal efficiency of this unit?
 Reply

A  Answered on 10/9/2017 by InyoPools Product Specialist Lennox H.

Hi, Ron. The Thermal efficiency of this unit is 83%.
 Reply


?     Asked on 9/17/2017 by Jack Stalker

If I use a variable speed pump and it is programmed at low speed I assume the heater can be set to ON and the pressure sensor will shut the heater down. If, later, the pump speed is programmed higher will the sensor turn the heater back on? If so, does this cause any damage to the heater?
 Reply

A  Answered on 9/18/2017 by InyoPools Product Specialist Lennox H.

Hi, Jack. That is correct, the heater will only turn on when the water flow is within the operating range. This will not cause any damage to the heater. 
 Reply


?     Asked on 7/26/2017 by

Is this a propane heater
 Reply

A  Answered on 7/26/2017 by InyoPools Product Specialist Alex V.

Hello, The H250FDN is a natural gas heater. If you need a propane heater, you will need to order the H250FDP.
 Reply


?     Asked on 7/19/2017 by Michael

Hi, does this unit come with an outlet plug attached or does my electrician have to attach one electrically?
 Reply

A  Answered on 7/19/2017 by InyoPools Product Specialist Alex V.

Michael, The heater does not come with a cord. It is preset to 230v. It can also be wired for 115v. Your electrician would supply the cord when the unit is installed. 
 Reply


?     Asked on 7/18/2017 by Michael

Can this heater be plugged into a GFCI outlet?
 Reply

A  Answered on 7/18/2017 by InyoPools Product Specialist Lennox H.

Hi, Michael. This unit can be plugged into a GFCI outlet.
 Reply


?     Asked on 7/1/2017 by

Will a 3/4 in natural gas line run this unit. App 35 ft from main gas meter .old pool heater is 175 k btu and has plenty of pressure.
 Reply

A  Answered on 7/2/2017 by InyoPools Product Specialist Alex V.

Hello, A 3/4" gas line at 35 feet will only accommodate the H150FDN. For the H250FDN, you will need a 1" gas line. 
 Reply


?     Asked on 6/27/2017 by

dimension of hayward 250 and 400
 Reply

A  Answered on 7/4/2017 by InyoPools Product Specialist Lennox H.

Hi. The Height is 24" and Depth is 29-1/2" on both models, the 250 Width is 28" and the 400 Width is 36". 
 Reply


?     Asked on 6/25/2017 by Therese Brunetti

Hi, We have a 18 x 36 inground pool with a extended stair cove. I believe we have 20 to 25.000 gallons. will this worrk for our pool
 Reply

A  Answered on 6/25/2017 by InyoPools Product Specialist Stacey M.

Hello, This unit is normally for an 18,000 gallon, I would go for the next size up or if you would like to heat faster it would be a 400btu unit.
 Reply


?     Asked on 6/25/2017 by Therese Brunetti

Hi, We have a 18 x 36 inground pool with a extended stair cove. I believe we have 20 to 25.000 gallons. will this worrk for our pool
 Reply

A  Answered on 6/25/2017 by InyoPools Product Specialist Stacey M.

Hello, the 250 btu is normally for a 18,000 gallon pool, if you would like for 20-25,000 gallon I would goto the next size up or if you would like to heat your water faster you can go with a 400btu unit.
 Reply


?     Asked on 6/23/2017 by AL Zoma Zoma

250000 k for howmany gallon
 Reply

A  Answered on 6/23/2017 by InyoPools Product Specialist Stacey M.

Hello an 18,000 gallon above ground pool but to size a unit properly we will need the surface area of the pool.
 Reply


?     Asked on 6/13/2017 by Bell Ken

I need to replace my 13 year old Hayward H250, is the Hayward Pool Heater Universal H-Series Low Nox 250K BTU NG the current replacement?
 Reply

A  Answered on 6/13/2017 by InyoPools Product Specialist Lennox H.

Hi, Bell. Yes, this H250FDN unit can be used as a replacement.
 Reply


?     Asked on 5/30/2017 by

I have a Aqualink RS4 control unit in my home that I could turn on and set my old pool heater temperature to, will this heater also work with my control unit?
 Reply

A  Answered on 5/30/2017 by InyoPools Product Specialist Patrick P.

Yes the Hayward H250FDN will also work with your Jandy AquaLink control system.
 Reply


?     Asked on 5/17/2017 by pat c

hi, I have a 24' round 54 inch, I think its 15,000 gal. is this enough or would you recommend a different size. thanks
 Reply

A  Answered on 5/19/2017 by InyoPools Product Specialist Lennox H.

Hi, Pat. This H250FDN heater is sufficient to heat a 24' AG pool.
 Reply


?     Asked on 5/9/2017 by AshBai

What is the gauge of wire needed to hook up the heater from the panel to the unit? I believe it is 14 AWG but just confirming.
 Reply

A  Answered on 5/9/2017 by InyoPools Product Specialist Lennox H.

Hi, AshBai. The gauge of the wire is determined by the voltage and run. You will have to consult an electrician.
 Reply


?     Asked on 3/21/2017 by Guy

The picture of the Hayward 250 FDN you have on your web site shows a protective cover over the control panel, which is something I wished my current heater had I might have prevented the buttons to stop working. I have not seen this feature on any other web sites for this model, is the picture accurate and is there a specific model that has this that other web site are not showing?
 Reply

A  Answered on 3/22/2017 by InyoPools Product Specialist Scott W.

We have updated our picture to how they are being sold now, the other websites that I am looking at still have the older version.
 Reply


?     Asked on 3/16/2017 by David Motes

I see you're also selling a train 250000 BTU which unit would be better for my above ground 18000 gallon pool
 Reply

A  Answered on 3/16/2017 by InyoPools Product Specialist Lennox H.

Hi, David. This unit will be capable of heating an 18,000 gallon above ground pool but to size a unit properly we will need the surface area of the pool.
 Reply


?     Asked on 3/16/2017 by

Can this heater be used on a 18000 gal above ground pool.
 Reply

A  Answered on 3/16/2017 by InyoPools Product Specialist Lennox H.

Hi, This heater can be used to heat an 18,000 gallon above ground pool.
 Reply


?     Asked on 2/22/2017 by Phil Gallagher

I am looking to replace an older heater with a natural gas heater 225,000 BTU range. I am looking for a heater that will also control my pump, so there is only one control panel. Is this something you sell?
 Reply

A  Answered on 2/23/2017 by InyoPools Product Specialist Lennox H.

Hi Phil, I'm not aware of any gas heaters that would control a pump. They're are some variable speed pumps that are available that has an auxiliary relay that can be used to provide power to a heater or other equipment.
 Reply


?     Asked on 11/29/2016 by Duco van Overschot

Dear Madame, Sir, Is it possible to ship to the Netherlands? Thanks in advance for your reply Regards Duco
 Reply

A  Answered on 11/29/2016 by InyoPools Product Specialist Scott W.

It can be shipped to the Netherlands, but a big item like that we would ship to a port in the United States and you would set up a freight forwarder to ship the rest of the way. For items that do not need a freight forwarder would be shipped UPS Worldwide.
 Reply


?     Asked on 9/29/2016 by marc

can this be installed inside a pool house, if so what other material will I need to hook up to the chimney, that is there.
 Reply

A  Answered on 9/29/2016 by InyoPools Product Specialist Scott W.

You would need the indoor vent kit to go along with that heater, part number UHXNEGVT12501.
 Reply


?     Asked on 7/17/2016 by

How many boards are in the heater?
 Reply

A  Answered on 7/19/2016 by InyoPools Product Specialist Lennox H.

Hi, This unit has a total of 3 circuit boards, the Integrated Control Board (FDXLICB1930), the Field Wiring Panel (FDXLFWP1930) and the Display Board (IDXL2DB1930).
 Reply


?     Asked on 7/17/2016 by

How many boards are in the heater?
 Reply

A  Answered on 7/19/2016 by InyoPools Product Specialist Lennox H.

Hi, This unit has a total of 3 circuit boards, the Integrated Control Board (FDXLICB1930), the Field Wiring Panel (FDXLFWP1930) and the Display Board (IDXL2DB1930).
 Reply


?     Asked on 7/9/2016 by George

I just set up my new pool and heater a few days ago. Everything was working fine for 3 days but then my heater display went blank. I checked all the voltages and fuses and that seems good. Anything else I should be checking? It's a Hayward H Series 250000 BTU Electronic Natural Gas Inground Swimming Pool Heater CODE: H250ED2C
 Reply

A  Answered on 7/15/2016 by InyoPools Product Specialist Lennox H.

Hi George, You will need to confirm that the ribbon is connected properly. If the ribbon cable is secured then you will have to contact Hayward for warranty.
 Reply


?     Asked on 3/29/2016 by

pool heater is to be installed indoors. i do not see a venting system
 Reply

?     Asked on 7/22/2015 by Bill

I had a 1 inch gas line installed for heater. It is approx. 145 feet from source. I was told it was plenty, not I hear it is not? 350,000 BTU heater. Does anyone know the answer? Apparently Tarson pools doesn't know
 Reply

A  Answered on 7/23/2015 by InyoPools Product Specialist Lennox H.

Hi Bill, The Hayward H-series LoNox Installation Guide requires 1-1/2" pipe for Natural Gas or 1-1/8" pipe for Propane for the 350,000 BTU unit within 100-200 feet distance.
 Reply


?     Asked on 5/8/2015 by Frank Watts

What size vent do I need for a Hayward 250000 btu pool heater?
 Reply

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

The Hayward H250 requires 6" vent pipe when installing indoors. You will also require an Indoor Vent Kit for this heater if installing indoors. Two models of vent kits are available Hayward H250 Indoor Vent Kit for Vertical Venting and Hayward H250 Indoor Vent Kit for Horizontal Venting.
 Reply


?     Asked on 4/26/2015 by Frank

The new H250FD flanged pipe nipples are 2 1/2 inch. My older Hayward is all 1 1/2 pipe . Is the a converter to reduce to 1 1/2 PVC .
 Reply

A  Answered on 5/1/2015 by InyoPools Product Specialist Lennox H.

Frank, You can get a 2" to 1.5" PVC reducer at your local hardware store, it nothing special.
 Reply


?     Asked on 4/25/2015 by Steve

Can I use my existing inch and a half water pipe when plumbing in this heater? It will require downsizing from the 2 inch connectors.
 Reply

A  Answered on 4/27/2015 by InyoPools Product Specialist Patrick P.

Hi Steve, Yes it would be fine to go from 1-1/2" plumbing up to the 2" ports on the heater. If this was the other way around you may have problems (i.e. if you had 2" plumbing and you were going down to 1-1/2" for the heater ports).
 Reply


?     Asked on 4/21/2015 by 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?
 Reply

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.
 Reply


?     Asked on 1/19/2015 by Brandon

I have a 8,200 gallon spool. What size btu would you suggest to be able to heat it up and use as a spa?
 Reply

A  Answered on 1/20/2015 by InyoPools Product Specialist Robert M.

Hello Brandon - The 250K BTU would be a sufficient size for your pool/spa combo.
 Reply


?     Asked on 10/8/2013 by Guest

Where can my heater be installed?
 Reply

A  Answered on 10/8/2013 by InyoPools Product Specialist Patrick P.

There are specific venting requirements and clearance distances that must be met to ensure proper operation. Consult the owner’s manual for exact specifications for your model of heater.NOTE: Gas fired heaters should be diagnosed and repaired by trained personnel.
 Reply


?     Asked on 10/7/2013 by Guest

Is it possible to convert this heater from natural gas to propane?
 Reply

A  Answered on 10/7/2013 by InyoPools Product Specialist Patrick P.

Yes, it is possible to convert this heater from natural to propane gas as there is a conversion kit for it. To view and purchase this kit you you will need to click here.
 Reply


?     Asked on 1/17/2013 by Guest

Is a vent required for typical outside installation for the Hayward 150k Ng Lo Nox heater?
 Reply

A  Answered on 1/17/2013 by InyoPools Product Specialist Patrick P.

For the Hayward  Lo Nox heater, you would not need to purchase an additional vent if you are using it outside. If you are installing the heater outside, we recommend you purchasing a heater cover. This will protect your heater from debris, rain, snow, heat- or pretty much anything that could get caught in your heater. The Weather-Out Pool Heater Cover  can be viewed on our website.
 Reply


?     Asked on 10/18/2012 by Guest

What is the elevation rating for the Hayward H-Series Low Nox Heaters
 Reply

A  Answered on 10/18/2012 by InyoPools Product Specialist Patrick P.

Per Hayward, the Hayward H-Series Low Nox Heaters have an elevation rating up to 7,700'
 Reply


?     Asked on 10/10/2012 by Guest

What is the difference between an Electronic and Millivolt ignition?
 Reply

A  Answered on 10/10/2012 by InyoPools Product Specialist Patrick P.

The basic answer is that Millivolt is the old style of ignition, using a standing pilot light. While the electronic ignition uses a spark start system like a gas grill. Electronic ignitions are more efficient in gas usage and also are better suited for high wind areas where a pilot light might get extinguished.
 Reply


?     Asked on 1/16/2012 by Guest

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

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.
 Reply


?     Asked on 12/29/2011 by Guest

How do you know if a pool heater is a propane heater or a natural gas heater?
 Reply

A  Answered on 12/29/2011 by InyoPools Product Specialist Patrick P.

Typically in the product name we use the abbreviation of "LP" for propane or "NG" for natural gas. Click here for a full listing of our >Pool Heaters.
 Reply


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Difficulty

Est. Repair Time

2 to 4 hrs

Tools Needed

Screwdriver, Pliers, Wrench Set

1     1

I was looking st making a major repair in a 10 year old heater

Written on 5/15/2017 by Guest

My previous heater was problematic for the last ten years. With that being said I opened the pool this year and tryied stating the heater and the exhaust fan was totally rotten. I decided to turn threats INYO like always and purchase a new one The purchase and the delivery was seemless as always

Were these instructions helpful? 
 

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