Mike Lamb Posted April 9, 2015 Report Share Posted April 9, 2015 What's a guestimate to replace or fix a leaking boiler air vent that is dripping in an attic. Click to Enlarge 41.84 KB Link to comment Share on other sites More sharing options...
ghentjr Posted April 9, 2015 Report Share Posted April 9, 2015 Homeowner, the price of a new vent. Plumber, $100 to 150. Just shut down the boiler water feed, release the pressure and drain water below the valve, unscrew the air valve and put a new one in. (I assume it is not soldered into place) Because it is in the attic you would not have to drain more that a quart or two of water. Then when you turn the supply back on bleed the valve. Link to comment Share on other sites More sharing options...
Tom Raymond Posted April 9, 2015 Report Share Posted April 9, 2015 How old is the boiler, and how hard is the water? Twice in the last year I've had the regulators on feed valves stick shut when they were closed to service the boiler. Triple John's estimate. Link to comment Share on other sites More sharing options...
kurt Posted April 10, 2015 Report Share Posted April 10, 2015 That's right. There's always a stuck valve, regulator, or control that means draining down the system. If there's not enough isolation valves, and there's never enough, it's usually a drain down scenario meaning $500 +-. Link to comment Share on other sites More sharing options...
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