When my natural gas pool heater fires up it starts whistling. The whistle appears to start as soon as the gas valve opens, before the burners light and doesn't stop until the gas valve shuts off. The unit has been installed for over ten years without the whistle and all the burners have nice blue flames so I really don't think it's low a gas pressure issue. I already have removed the burner assy and blew out all the passages after removing the gas valve.
Hayward H250 Heater Whistles
- Thread starter aswetich
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borjis
LifeTime Supporter
Maybe the heater like you for being nice to it all these years?
haha, but seriously, hopefully Paul will see this and advise, he's the resident heater installer/expert.
haha, but seriously, hopefully Paul will see this and advise, he's the resident heater installer/expert.
I haven't run across this on the Hayward but I would suspect the gas valve is causing the noise. Cleaning the orifices and the burners was a good idea.
I would also want to check the gas pressure if you can. If you have a regulator by the heater it could also be a cause.
I would also want to check the gas pressure if you can. If you have a regulator by the heater it could also be a cause.
My Hayward has a Ghostly moan, for want of a better term, when the pump is running on low speed. Increase to high speed and it goes away.
Mine does it high or low speed. It appear to be related to the gas flow, not water flow. I hear the whistle right after the gas valve opens, before the burners ignight.