This was a first for me

[wbernauer (Walter Bernauer, CMI®)]

Old Mueller coal gravity furnace with a gas conversion and air handler.

[bcawhern1 (Brian Cawhern, CMI)]

I surrender

[mwilles (Martin Willes, CMI)]

I haven’t seen a gravity furnace since the late 80’s!

[srechkin (Simon Rechkin)]

The good old octopus

[rkenney (Robert (Bob) Kenney, CMI® MD Lic.# 31044)]

anonymous

[ryoung7 (ROBERT YOUNG, CMI)]

Water heater to the front of the furnace looks around the same circa.

Thanks for sharing.

[bhill4 (Brian Hill, CMI®)]

Duct wrap warning may be asbestos wrap.

[lmorrison (Larry Morrison, CMI)]

Finally a situation where you can insert the word Nuddaaafinga’ in a report…who is old enough here to know what a “clinker” is??

[bsweet (Brandon Sweet, CMI®)]

I see these relatively regularly. Older in fact.

[wbernauer (Walter Bernauer, CMI®)]

I’ve seen quite a few too, always abandoned though. Ive never seen one retrofitted with gas.