Best Of
Re: potential for gas leak in enclosed area
If it were my house, and it has been my house(s), I would do nothing. I have installed miles upon miles of gas piping, as so many others have on this sight.
The gas has been installed and tested? Correct!? Then in my house nothing, as in so many others nothing else need be done. I wouldn't worry about it.
Unless of course you have a inner need to do this.

Re: Pumping AC unit down in winter
If you're using the recovery machine anyway, why not just recover all of it? Is the condenser moving to a new location where a change in pipe length will effect the existing charge?

Re: Air Separator degradation...
Its a brass version, correct?
I would take the small cap off to check the needle valve and hinge assembly.
Next open it at the big joint to get to the media inside. Its a glass reinforced nylon media. It should not deteriorate from water. We have seen them plugged with sludge, teflon tape and in one case a brown cotton glove in a large steel separator

Re: How to secure fiberglass insulation wrap?
@EBEBRATT-Ed Im not sure but I think @indierex is trying to add the insulation to make it a little safer for the new baby.

Re: Steam boiler pipe makes water noise
Hello WillS,
Steam piping is pitched to drain condensate properly. If pipe support straps have been damaged, removed, dilapidated, etc. water may collect where it should not be. One pipe or two pipe system ? Pictures help us help you.
Re: Bathroom Radiator - The Wrong Way
I've never seen a radiator like this before. the only things i recognize are the valve and vent. What is going on here?

Re: A heating challenge!
No dust collection is that good. Forget forced air unless a seriously oversized filter system is installed.
In floor radiant
Hot water coils with drains so the coils can be washed periodically.

Re: Pumping AC unit down in winter
Easier to just pump all the refrigerant into the condenser with the compressor.

Re: Backup power for an old steam boiler with a standing pilot
Yes Long Beach Ed, you don't want the neutral bonded to the ground in two separate, different places, so you don't have neutral current in the ground conductors. So a DPDT switch would provide the neutral isolation.
Re: Air Separator degradation...
How close is your indirect circ to the air separator? I've seen them pull in air when piped too close.