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Discussion Starter · #1 ·
Hello. This morning, I discovered that while the heat was working fine on the first floor of my house, there was none on the second. The house is a cape cod style. The second floor has been finished and insulated. The heating is hot water (Boiler is oil) baseboard. The baseboards on the second floor are cool to the touch (They are in two separate rooms).

I was thinking that the second floor thermostat may be malfunctioning. It appears to be battery powered (Yes, I did try new batteries). Anyone have any ideas what I could be missing here? I'm a first time homeowner and have never really worked on HVAC before.
 

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Discussion Starter · #3 ·
Yes. Usually, it gets quite warm in the two rooms when the heat is on. This is our third year in the house, never had this problem before. I'm assuming they work off the same pump as we only have one boiler in the basement. Like I said, I don't know squat about baseboard heating other than the basic concept of it.
 

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Civil Engineer
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Check the coin valves to the radiators. You may have air trapped in the lines. I get this problem all the time, have to bleed the air out, else I get no heat. It is a bit of a pain, I have heard about a deaeration system you can install in the line adjacent to the boiler, perhaps someone else is familiar with the device. Otherwise, you have to open the valves with a screwdriver while the pump is running, and let the air out, until hot water squirts out. Use a sponge, and watch out, the water is probably at close to 180 degrees.
 

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Discussion Starter · #7 ·
Thanks for the tip. I thought of this, but I can't find the valves. The genius who finished the attic must've hidden them behind the walls in the unfinished portion (Which is very full storage space). Guess I'm going hunting this weekend!
 

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Baseboard radiator ?

Or

Baseboard slant fin?

Maybe I'm thinking wrong
I have radiators, so I know they have them
But are the slant fin setups supposed to have them?
I thought the air woud get pushed thru the line to the boiler
 

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Baseboard should have manual bleeders.

The ones that don't are prone to air problems down the road.

Purging removes most of the air. But not all of it.
And it gets trapped in the baseboard. The normal velocity of properly sized circ is too low to move all the air to the boilers air eliminator.
 
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