However this doesn t have to be the case and usually isn t.
Power vent tankless water heater.
Gas tankless water heaters don t have to use indoor air for combustion.
In fact tankless water heaters save up to 16 square feet of space.
Because of their unique construction power vent water heaters are virtually impossible to backdraft.
A direct vent system typically results in lower water heating costs because the exhaust gases are vented vertically with no extra power required as is the case with the power vent water heater.
Tankless water heaters are vented in two ways.
Tankless water heater venting can be a quick and affordable job if you plan it right.
Direct vent units pull in air from outside the home or building and have two vents one for intake and one for exhaust.
Power vent and direct vent.
Power vent water heaters have quickly become the standard for newly constructed homes equipped with built in fans that push the exhaust gas out of the vent through a powered fan.
This configuration allows tankless units to fit in smaller spaces.
Direct vent units attract outside air from the house or building while power vent units solely need an exhaust vent and should be installed in a larger area for receiving sufficient air amount for combustion.
Direct vent and power vent.
Direct vent units pull in air from outside the house so they have two vents for intake and exhaust.
Noritz nr98 5 6 gpm at 60 f rise 0 83 uef gas tankless water heater power vent model.
Tankless water heaters can be vented in two ways.
When many consumers learn that a gas powered tankless water heaters must be vented they immediately imagine costly and invasive carpentry work.
Direct vent water heater when using a direct vent water heater water is heated by the heat of fuel combustion.
Ultra low nox emissions scaqmd rule 1146 2 compliant.
Ecosmart eco 18 electric tankless water heater 18 kw at 240 volts with patented self modulating technology white 4 1 out of 5 stars 1 999 366 48 366.
Indoor tankless water heaters draw in outside air.
3 5 out of 5 stars 41.
As for which exactly one is the best way to vent tankless water heater it depends either on your applications or on your using places.
Excel pro tankless gas water heater natural gas 6 6 gpm whole house and for hydronic heating compare to rinnai rheem noritz bosch free flue kit.
When installed correctly both best direct energy tankless water heaters and best power vent tankless water heaters can offer you with best and most satisfying user experience.
Nr98 sv ng energystar non condensing water heater.
Tankless water heaters are ventilated in two ways.