Propane Pressure Regulator

[Bangorbob]

I have a 2005 Roadtrek 210. I changed the water heater, turned the propane back on and got a lot of hissing. I am assuming that the regulator is bad. I have not removed old yet. Question is: what regulator should I use? I believe mine vents down. Is it the MEGR-298?

Thanks, Bob

[SteveJ]

If it were me I would diagnose the actual leak before loading the parts canon.

A big leak should be easy to find.

[ChicagoTom]

Why do you think it's the regulator? If the last thing you touched was the connection to the water heater, then I would check that 100%