"I could also just get a pull-down faucet for the sink and aim it at the tub to fill it." You could - but you won't like it. The most one of those will fill is 2.2 gallons a minute - some less that that. Divide your tub's capacity by that and you're looking at 20 minutes to fill +/- Not good. beekeeper - I have one of these and have placed more than half a dozen in projects over the past few years. What you get for your money is a machined brass body that mounts in the ceiling or wall and a plated trim piece. The body is a substantial piece of hardware and chrome,brass, nickel plating costs $$$ too. Whether that's all worth 500 + bucks, is up to you. Like davidro says, it doesn't matter what the delivery system is, this is just an opening for hot water to come out of, albeit one with a bit of engineering. GD & Spanish - the splashing is very much dependent on the mounting height of the unit AND the tub selected AND the location of the water column inside the tub. Mine hardly splashes at all. The ones I have seen that splash only do so for a minute or so until their is enough of a pool in the tub to counteract it. Flat bottom tubs with tall ceilings are going to splash more than one from 7' into a sloped contact point in the tub. Besides , we're talking water in a bathroom, generally tiled so what's the big deal ??? It's not like the amount of splash is the same as taking a shower and leaving the door open. 2. While you are correct in that "the water cools off much more than it would from just a regular tub filler", it's not as if it cools off enough for anyone without a thermometer to tell a difference, and a very sensitive one at that! Sure the air cools the water more from a stream falling from 8 feet than one falling from two feet. But bath water that is 100 + degrees is not going to cool down to 90 deg. in the xtra 1-2 seconds it takes it to fall from the ceiling- get real. Additionally , that filler produces a very dense column of water (laminar) that has little to no air in it, so one might argue it will be hotter and less prone to heat loss than a "regular" filler that introduces room temp air into it's stream - thus cooling it off on it's way to the tub. So don't worry Spanish -your tub will still be plenty hot with that filler if you choose it. IT'S A NON -ISSUE people. I've already alluded to the real issue for lower tub temps - FILL TIME. That's directly related to the delivery system ( valve). If your valve and accompanying filler will only deliver 5 gallons a minute it's going to take a while to fill an 80 gallon tub, and there will be some heat loss. Select a valve that delivers 20 gallons a minute and you can be soaking quicker that most people can undress. Here is a link that might be useful: laminar valve body - see page 2

There is a LOT of disinformation on these forums about on-demand tankless units, ESPECIALLY the electric units. First, energy cost savings is NOT a reason in itself to make the switch. No reason alone is sufficient. It is the total package, in light of your particular lifestyle, that will dictate the pro-con outcome of the decision making process. First, tankless units save space -- a lot of it, especially electric units that do not need to be vented. In Texas we have no basements, so that can be an important issue. Second, an electric unit is unlikely to blow up, unlike anything using natural gas. Third, there is an endless supply of hot water, which in a successive-morning-shower household like mine, is a really important issue. And finally, yes there is some documented comp fuel savings (electric tankless over electric tanks, or gas over gas), that is really offset by the added initial cost of the unit plus upgraded electrical service or gas supply line sizing. Moreover, there ARE full-house electric units out there that provide plenty of water, unless you plan on taking two showers simultaneously while also doing your laundry and running the dishwasher! And if that's your bag, you can run 2 or more electicals together. Or get a really big gas unit. Bottom line, nearly every nay-sayer of tankless units ignore the pros and focus on a single con - cost, cost, cost. Well, we all don't drive a Ford Focus for a reason. Some of us enjoy our Buicks, Porsches or Camrys even though another car would get us from point A to point B cheaper while using less fuel etc etc etc. Full disclosure: I have a Steibel Eltron Tempra 36 whole-house electric unit. Love it. My electric bill went up nary at all.

My Ultra Bain air tub looks similar. Has raised area at the, er, rear. Has arm rests and handles and a head rest. It's acrylic and heated. I chose mine to fit *me*, since DH prefers a shower. I was able to 'try one on' in a plumbing company's showroom. I wanted to be able to brace my feet so I wouldn't just slip right down underwater. I also wanted something that would fill in a short time. (We have a whirlpool tub that I never use because it takes ages to fill.) My tub is 14 years old. Zero problems. Easy to clean. Air tubs 'blow out' remaining water a few minutes after you exit them so there is no mold forming in the tubing. I have a regular fill faucet and a spray rinse on a diverter.

on the second page of the spec sheet it has a chart with one section labeled temperature raise. One module only does a 22 degree temp raise at 4 gpm. SO if your groundwater is 55 you will only be able to raise it to 77 at 4 gpm. I like my water at least 100 degrees, so if the water is 55 and you need a 45 degree raise, it will only do 2 gpm, that's with NO other water mixed in, so it will take a long long time to fill. You said its 110 gallons or so, at 4 gpm it will still take 25 minutes...so you need something that can put out enough hot water to fill it in about 10-15 minutes (so it doesn't get cold waiting to fill) . I know I like it warmer than 100 (maybe 105?) because back when I was pregnant I used to use a pool thermometer because they suggest pregnant women not bathe in over 100 degree. I was OK with 100, but wished it could be warmer! If you have gas, then price out a dedicated tankless for it. Its probably easier then running a special electric line assuming you have gas anyway. As far as the 75 gal tank. If it heats water to 130 and you use all 75 gal, that means you are mixing that 75 gal with cold water...how cold does your water get (didn't notice your location)? Try mixing 7 cups of your hottest water with 5 cups of your COLD water and see how it comes out. (I think that is the same proportions as 70 gal hot and 50 gal cold=120gal.