I am needing to fix a bathroom faucet which is leaking, so i need to turn off the water supply to my house. The valve by the street is way too tight and will not turn. I did notice two pipes from the wall in my laundry room which come into the water heater (gas) one pipe has red valve on it. I’m assuming that might turn off the water to my house maybe? If it does, do i need to turn off the flame to the water heater for any reason while I’m messing with this stuff?