Planning on having a Pool Heater installed this spring... a Rheem M406A (Nat. Gas). The first installer indicated I will need to have my home gas meter upgraded as it's too small for the flow rate the pool heater will need. I've been doing quite a bit of investigating on a pool heater and this is the first I've heard or read about replacing the meter (maybe this is an obvious upgrade). Does anyone have any experience with this - costs, etc? I know costs depend on location (live in MN) but an idea would be helpful. Based on the markings on my meter, I believe any heater above a 200,000 btu will require a meter upgrade. Any advice on what to make sure I ask for in the installation of the Heater? My wife indicated we need a fire switch added... haven't heard of that either??