One is concentric pvc while the other is a twin pipe.
Indoor tankless gas water heater.
Indoor vs outdoor tankless water heater.
Rather you need to consider the pros and cons of each to decide which would be more suitable for your situation.
It is intended for indoor use and runs on natural gas and is very compact 6 7 x 13 8 x 20 3 inches big.
Camplux 2 64 gpm residential indoor tankless water heater on demand instant water heater with fahrenheit digital display liquefied propane gas water heater for small homes apartments use black 3 9 out of 5 stars 10.
Rheem performance plus 9 5 gpm natural gas indoor tankless water heater model eco200dvln3 1 view the performance plus tankless gas water heater 1 020 00 1 020 00.
Camplux tankless water heater natural gas 3 18 gpm instant hot water heater with fahrenheit digital display residential natural gas water heater for 2 3 persons bathroom indoor use black 4 2 out of 5 stars 71.
When choosing a tankless water heater the first thing you need to decide is if you want gas or electric.
Takagi t kjr2 in ng best indoor natural gas tankless water heater the t kjr2 in ng is a mid priced and energy efficient indoor tankless water heater.
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For venting kits it gives two options for you.
Next you need to pick between indoor and outdoor.
Noritz 11 1 gpm liquid propane indoor direct vent recirculating tankless water heater max 199 000 btu h model nrcp111 dv lp view the nortiz tankless water heater collection.
The rheem eco200xln3 1 outdoor natural gas tankless water the rheem eco200xln3 1 outdoor natural gas tankless water heater can provide up to 9 5 gpm at a 35 temperature rise.
Like noritz indoor tankless gas water heater the flow rate of this unit is also up to 9 8 gallons per minute which can be used perfectly for whole home use and is the best choice for a large family or middle size family use.