Question about Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

How do I drain the water from my Hayward heater for the winter

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 116 Answers

There should be a drain plug on the bottom of the header. This is common on most of Hayward's in-ground pool heaters. Since you did not give your model Number, I can't say 100%. You can also check Hayward's website for the manual and look under "winterization". you should be able to find your product manual here: Hope this helps. If you need further assistance post a reply in the comments, and don't hesitate to leave good thumb rating if you found this helpful. Thanks, and good Luck!

Posted on Oct 02, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a Haywood pump and filter - S180t - I started it up after winter and I have no backwash or rinse pressure??

Did you drain it completely before Winter? If water was inside the pump, it could have been damaged by expanding freezing ice. The impeller could be trashed (i.e. ''physically broken'').

May 18, 2015 | Hayward Industrial Products Hayward Pro...

1 Answer

How do I winterize my Hayward pool heater

either blow water out with a blower then follow with a little antifreeze to make sure all water is out then remove freeze plugs on sides of heat exchange then remove pressure switch turn off gas valve and put a board or something on the top to keep out snow and weather

Sep 24, 2014 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

Draining down in winter

Which type and brand water heater?

Tank type?

Boiler, solar, indirect, hybrid, combo, heat pump, etc?
Most have a drain valve.

Nov 02, 2012 | Water Heaters

1 Answer

How to winterize the h100id1 hayward pool heater

Make sure that you drain all of the water out of the pool heater to prevent damage during freezing weather. That is the most important thing you can do to winterize pool heaters. If you have a cover, you might want to use it to prevent weather related exposure, but as long as you have the water out, you will be ok.

Oct 29, 2011 | Hayward 100,000 BTU Pool Heater H100ID1 -...

1 Answer

I need to winterize my Hayward 300. Where the manual shows a drain valve there is a thick square bolt. I'm afraid to compromise it if it is not in fact a bolt.

That is the drain plug...underside of the inlet/outlet header. You should also break open the connection of the water tube to the pressure switch inside the heater to prevent the switch or tube from freeze damage.


Sep 20, 2011 | Hayward H-series Electronic Gas Pool...

1 Answer

How do you winterize a inground pool heater? model# H200ed2 serial# 21130507102557001

Drain it using the drain valve on the bottom-side of the inlet/outlet header; make sure the heater sits level or slightly tilted down on the header side. You also need to drain the water tube that feeds the pressure switch inside the heater cabinet. Turn off the gas and power off the circuit and you are done. If you cover it DO SO LOOSLY! Wrapping it tightly and not allowing air to flow thru will lead to rapid rusting of all the sheet metal.


Sep 19, 2011 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

First year with my new Hayward H 250fd heater. Closing pool this weekend and live in Michigan so you understand our winters. What do I have to do other than opening the drain plug if anything.

Other than the drain you'll need to remove the pressure switch from its feeder tube and leave it hanging by its wires for the winter. Be sure the heater is level or tilted towards the header to allow all the water to drain out. More than a few people have lost a heat exchanger to freeze damage after draining it because the heater wasn't level and water remained in the low end of the tubes.


Sep 08, 2010 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

How do you winterize?

pull the three (or so) drain plugs in your heater ... use a shop vac (without the filter in it) to blow and then **** out any remaining water.

hopefully, your pressure and suction pipes lead away and down from the boiler. Make sure you **** out those pipes as well.

You know how to drain your filter(s) and pumps ... right?

I hope this helps you


Oct 05, 2009 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer


Are you asking how to drain it? If so some older models come with a drain **** located on the bottom side of the black manifold. It is brass. You can loosen the drain **** and the water will drain out, be careful when tightening the drain **** back up though, they can break easily. You do not have to put much torque on it at all, dont even put a tool on it at first, if it leaks, then tighten it a little more. The newer models come with a brass plug instead of a drain **** and you can remove the brass plug. Or the best way i think is to unhook both unions for the inlet and outlet on the heater, use a shop vac on blow, and blow the water out. But if you are winterizing the pool equipment, the heater is not the only thing that needs to be drained.

Oct 12, 2008 | Hayward 250kbtu Ng Pool Heater - Inground

1 Answer

Drain gas heater for winter

On the side of the heater, you will see the water connections. Directly underneath them, on that black component that they attach to, there is a drain plug of some description. It may be a draincock, or just a plug. In either case, simply open or remove it to safely drain your heater. In a pinch, you could also disconnect the water connections at those unions (the big grey connectors), but they can be fussy to reassemble, and you run the risk of losing the o-rings.

Sep 27, 2008 | Hayward 250kbtu Ng Pool Heater - Inground

Not finding what you are looking for?
Hayward 250kbtu Ng Pool Heater - Inground Logo

3,621 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hayward Pool & Spa Experts

Jay Finke
Jay Finke

Level 3 Expert

1340 Answers

Bill Jordan

Level 2 Expert

372 Answers

john h

Level 3 Expert

12173 Answers

Are you a Hayward Pool and Spa Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides