Officially we don't recommend that you install our gas meters indoors. That being said, the circumstances of each installation are different, and should inform your decision regarding where to install the gas meter(s). While we can’t assure you that the indoor installation of our gas meter is safe, it is kind of a grey area industry-wide. This from inspectapedia.com explains the issue:
"Gas meter location: gas meters are located outdoors except when special permission is given by the gas company. Indoor gas meters increase the risk of an indoor gas leak, require special venting, and can make it more dangerous to shut off gas in an emergency.”
The risk, as stated above, is indoor gas leaks. To minimize the risk, the compartment in which the gas meter is located should have free venting to outside air and be sealed from other indoor areas. But, bottom line, there is an increased risk of problems with any indoor gas meter installation, and that risk is assumed by whoever makes the decision to place the meter indoors. Our recommendation, as always, is to place the meter outdoors.