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Old 12-05-2010, 02:13 PM   #1
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Baseboard Heat Problem's


Hi everyone,

I'm having a problem with a baseboard heater in one of my bedroom's. First let me say that all the other room's work fine and have no issues.

What happens is it seems like whenever i turn up the heat, no heat radiates out. However if I bleed the line, it will work for about an hour. However when the furnace reaches the temperature and stops, it seems like the next time in order for it to work I need to re bleed the line. Each time I bleed it, I get about 5 seconds of air, then the water and it works.

Any suggestions?

Thanks,

Dave

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Old 12-05-2010, 02:17 PM   #2
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Baseboard Heat Problem's


add an automatic air vent or have boiler bled of all air, replace auto air vent you currently have, and inspect for leaks to find out where air is coming from

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Old 12-05-2010, 02:31 PM   #3
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Originally Posted by hvactech126 View Post
add an automatic air vent or have boiler bled of all air, replace auto air vent you currently have, and inspect for leaks to find out where air is coming from
thanks for the quick reply. I did a quick google on automatic air vents and they seem cheap. How would I install one?
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Old 12-05-2010, 02:40 PM   #4
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are you looking to install it at the baseboard? Really this is a job for a pro as you have to drain the system down and refill and remove all the air. you can change them on the fly but I don't recommend a DIY to try that, could really get hurt by scalding
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Old 12-05-2010, 02:46 PM   #5
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Baseboard Heat Problem's


Before cutting into things, first check the pressure in the boiler. It should be somewhere from 12 - 18 lbs. Next check the temperature when the boiler reaches high limit. It should not be much higher than 200. Next check the expansion tank for the proper air charge, which should be a couple lbs less than system pressure when the system is cold. Finally, there is probably an air scoop on the boiler header with an automatic air vent on top of it. Make sure someone has not cranked down on the valve cap, it needs to be loose. If it's was tight and when you crack it it leaks, you need a new one.
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Old 12-05-2010, 04:40 PM   #6
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Thanks for the replies. It all sounds a bit out of my ability to do on my own. I will probably just hire someone. Any idea at what this might cost, so I know if I'm getting ripped off or not?
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Old 12-05-2010, 04:49 PM   #7
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I cant state what prices might be in your location, however, I can tell you it takes a lot to run a business! Expect a trip and diagnostic fee, a fee for draining down and refilling the boiler ( should include bleeding air out) and a charge for replacing the air vent, but a pro should go though the system and determine what is necessary for the repair so you don't have your current problem.

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