11:59AM | 11/28/08
Member Since: 11/27/08
2 lifetime posts
I'm totally stumped.

My system is nearly from 1965, supplied by a 100 foot well and has run without a hitch all these years.

Suddenly we began getting a lot of air bubbling in the pipes on all three floors of the house in each zone.

Zone cocks were drained on each floor and each zone was flushed fully at basement level till water ran clear and no air was found. Air was right back within hours and continues to return regardless of bleeding and purging of the system. We can find no leakage and the boiler isn't calling for excessive water.

Pressure tank checks out fine and there is no air whatsoever in the main household water system - only the boiler for the hot water heating system.

Any ideas???


02:03PM | 11/30/08
Member Since: 11/27/08
2 lifetime posts
The unit is an old (45 years) HydroTherm and I can't see anything that look remotely like a seal anywhere.

Admittedly I am an old disabled vet so I'm unable to be crawling around looking into and under it - however, as I indicated, there is absolutely no sign of a water leak ANYWHERE that would allow air to infiltrate and a water leak as it would ultimately have to reveal itself in the basement or around the baseboards, that's the big stumper.

The pressure tank is intact with the correct 20 lb pressure as called for.

The pump is circulating. Thermostats are calling for heat.

Still, it's double bubble, toil and trouble...
Click to reply button
Inspiration banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button


Post new button or Login button

To test the boundaries of small-footprint living, interior designer Jessica Helgerson moved her family to a 540-square-foo... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled mudroom will get you in the outdoor mood. Grab your coat ... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR tiles are an affordable way to customize a carpeted floor covering for any space. Make anything from runners to wall-... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... Dark wood shelving and a matching upholstered bench keep this closet sleek and refined. The large window brightens the sub...
Follow banner a
Newsletter icon Flipboard glossy Facebook Twitter Pinterest Youtube Rss icon