I'm upgrading my larger bath tub to a 177gal massive jetted tub, hopefully today if the wife and I can get it up the stairs. Now I'm concerned on how I'm going to be able to get enough hot water for this thing. We have a pretty decent water heater maybe 70 gal, but here's the twist, out HVAC is a water furnace which is plumbed into the hot water tank and somehow provides hot water as a byproduct. Now my family of 3 have never had any issues with running out of hot water but also never tried to fill 177gal or anything really.
Anyone have any insight to how a water furnace connects to the hot water tank? Quick glance it seems like the water furnace comes into the pressure valve and out the drain valve but I'm not sure if the water from the furnace mixes with the hot water from the tank or if there's some copper piping inside the tank and it just warms the water in a separate loop. Also not too sure if it only helps when the AC is on or if constantly flowing.
Regardless if it doesn't provide enough hot water, what's the best solution for me to get plenty of hot water to full the tub? Add a tankless heater on the hot line by the tub? Add a tankless heater at the main water heater with some switch by the tub to turn on only when I use the tub?
Also home is electric only.
1 more question. When I removed the original tub (house built in 2008) there's a half wall separating my tub from the toilet, inside that wall there's 1.5 or 2" PVC pipe that's an n and just goes back down. Without ripping out my subfloor I can't tell if it's actual plumbing or just to help support the wall.
Anyone have any insight to how a water furnace connects to the hot water tank? Quick glance it seems like the water furnace comes into the pressure valve and out the drain valve but I'm not sure if the water from the furnace mixes with the hot water from the tank or if there's some copper piping inside the tank and it just warms the water in a separate loop. Also not too sure if it only helps when the AC is on or if constantly flowing.
Regardless if it doesn't provide enough hot water, what's the best solution for me to get plenty of hot water to full the tub? Add a tankless heater on the hot line by the tub? Add a tankless heater at the main water heater with some switch by the tub to turn on only when I use the tub?
Also home is electric only.
1 more question. When I removed the original tub (house built in 2008) there's a half wall separating my tub from the toilet, inside that wall there's 1.5 or 2" PVC pipe that's an n and just goes back down. Without ripping out my subfloor I can't tell if it's actual plumbing or just to help support the wall.