More than 2 inches or an r valu.
Super insulated gas hot water heater.
This means that galvanic corrosion two dissimilar metals in direct electrical contact will occur immediately after the water heater plumbing lines are.
On the upside newer storage tank heaters feature insulation that helps prevent heat loss.
Rl94in luxury series tankless water heater the rl94in and all of the luxury series models offer the highest output of rinnai s non condensing line of tankless heaters.
The higher the r value the thicker the blanket and the more insulating horsepower.
If your water heater is located in unconditioned space a garage basement or attic or you don t want added heat install a heavy blanket r 11 or better.
Rinnai luxury series.
Find super high efficiency tankless gas water heaters at lowe s today.
2 i noted that both the cold and hot water lines going into the water heater before insulation mod did not have dielectric connections from the copper pipes connecting to the water heater.
Unlike storage tank heaters tankless water heaters keep water hot without using a tank.
In general a storage tank heater is only appropriate for homes that frequently use large amounts of hot water.
I have located 2 gas hot water heaters a kenmore power miser 12 a bradford white m4 with 2 insulation.
The kenmore specs say that the 2 insulation has an r value of 16 r16.
Tankless demand water heaters.