Okay I know there are other posts in here on this subject, but I didn't find one that deal with my situation.
The home I bought has 2- 40 gal, Rheem LP WH's currently connected in series. I would like to connect them parallel so there is equal draw/demand on each heater. I understand the need for equal # of joints and piping. The problem is they are both in mechanical room in the basement, with a furnace in bewtween them. There is also some duct work, electical etc so to pipe with exact same pipe and fittings would be very tough and maybe not possible.
I don't have any experience with thermostatic mixing valves....not sure if it would help me with 2 heaters to control equal draw from each heater??
The only time we really draw more than the 40 gal of hot water is to fill our master bath, jetted 2 person tub (doesn't happen often enough). The first heater is usually left off and the 2nd heater set slightly higher to compensate.
I also felt if they were parallel I could turn the temps down on each and have adequate supply of hot water with less work from each of them....
Any ideas are appreciated.