"Ariel" wrote in message
...
Pilbs wrote:
"Ariel" wrote in message
...

I have a very slow gas leak in my house that I simply can't find.

The gas is leaking at a rate of 1.7 cubic feet per day (0.071 cubic feet
per hour) as measured by the meter.

I don't smell gas anywhere, and I have looked at (sniffed actually)
every
joint I could reach, and nothing.

My question is how sensitive of a detector would I need in order to find
this? I have seen detectors with ppm sensitivity ranging from 50 to
2000.
Obviously price goes accordingly, how sensitive of a detector do I need?

And realistically speaking, how bad of a leak is it? I know that any
leak
at all sounds scary, but a leak so slow that you can't smell it is not a
fire hazard as far as I know, but it does waste gas.

-Ariel

What gas appliances do you have in the house?

I have a water heater, stove (range), and furnace, but the valves to all
of them were off, plus the valves internal to the units were off as well
(just in case) when I tested this.

-Ariel

===============
Just a remote possibility.................

Have you got a dripping hot tap somewhere on the water heater circuit? It's
possible that the water diaphragm has become weakened and is allowing the
gas valve to operate at a lower pressure than it should. I don't even know
if this is possible but it's worth a quick check around even though you said
the valves were turned off, just in case you missed something.

Cic.