Mr Heater hums/whistles

[Green&Gold]

Hi all,

Just a quick question: Lately I've noticed my Mr. Heater starting to make a high pitched humming noise. It used to do this only for a few seconds after first turning it on. Now it has started doing it more and more. It works fine, but it sure gets annoying. More info: it does it constantly on low, sometimes on medium, and very little on high. I'm thinking it's got to be something to do with the amount of oxygen it is getting because this weekend a couple times when I zipped open my door and the wind blew in, it stopped right away. I know oxygen sometimes gets low in small spaces, but I have run other Mr. Heaters in my house without this problem occurring. Any recommendations? Is it going to blow up soon? Should I maybe just change out the thermocoupler? Thanks in advance!

[Surface Tension]

That sound is the wind sucking the last out of the 2008 Packers Season. The fat lady is singing. Its over!

Changing the thermocouple won't help.

With your head away from the sunflower, put a finger over the air intake for a quick second. That would be the 1/2" hole on the stem of the heater. It'll flame up a little bit when you do that so watch that cheesehead. What your doing by changing the air for that split second interrupts the resonating that is going on.

[Green&Gold]

Thanks Frank. I'll give it a try. I am left to take your Packer ribbing with a red face high hopes for next year. You are right. JH