I'll have to be honest, as much as I want to believe in Aquatic after talking with their incredibly enthusiastic and helpful cust srvc rep,as well as the most impressive specs on the market, I visited a showroom yesterday to experience the real deal (Infinity VII) and found the dry test-drive a bit harsh on the bones, i.e., doesn't conform to body like I had hoped, a little too upright and not conforming to the reclining torso. That test drive, albeit a dry run, convinced me this was not the tub for me despite it looking ideal on paper. Granted I wasn't able to float in the tub with water, so this is slightly unfair to the mfr, but getting in and out of the deep vessel along with reclining in the tub without water was surprisingly uncomfortable, and bone-crunching. I'm a young man still, and felt like multiple grab-bars on the walls would be de rigeur. The only reason I post this is not to discourage you from buying Aquatic, but because shopping for a whirlpool/airbath combo has been one of the most difficult quests I've experienced in planning my bath addition, and on paper, this was the tub for me, in vitro, this was NOT the tub for me. Just keep in mind that you simply must seek out a showroom to sample any tub prior to making the huge investment - not just money for the tub, but permanent plumbing specific to that tub leaves little room for future change of heart! For this reason, I've been very careful in ensuring that I'd be completely happy with the fit, and felt it necessary to share my experience. This is a decision 3 years in the making due to lack of showrooms that simply don't offer the real test drive or tub variety that gives you an overall gestalt. Again, Aquatic might be for you, but test drive it, or your regrets will eat you up. Other tubs I've crossed off the list, right or wrong, were Bain Ultra cause I simply wanted the combo, however, they seem to have an unbeatable reputation in the strictly air-bath category. Sani-jet, I actually experienced with water, and the jets were simply too weak for me, but again all their specs looked good on paper. Neptune, I experienced in a hotel, and was extremely impressed, but when it came to owning one, the contour again wasn't something I'd want to recline in for an hour, and none of this years styles/profiles appeal to me. Americh, don't know. Maax.....two trades people gave me bad reviews saying they make the most comfortable, stylish tubs with the necessary whistles and bells, but technical issues required discontinuing their carrying the line....surprising, as Home Depot Expo was pushing this on me like you know what. What am I going with, well I did a dry test run on the Jason LX635 (6 foot) which meets my comfort criteria without water, looks great on paper, has been in the business for as long as Jacuzzi has been in business (Jason=son of Jacuzzi), and was carried by a local trusty high end fixture place with exceptional reputation and attentive to customer feedback. Again, I'm taking a risk without doing a 'wet' run, and their head pillow was so poorly placed, that I dissed the option, but overall, it met most of my criteria. Will keep you posted after install, etc. The most comfortable tub I've experienced was the Maax oval-shaped whirlpool-air combo (Pearl?), but again, I talked to two vendors who said they had issues with them which is highly unfortunate since comfort-wise and on paper it was the perfect tub, like sitting in a LazyBoy, but with water massage. I hope to seek something comparable in the Jason.

We have an Aquatics Infinity - which is both air and jetted. At first I wanted just air - had a Jacuzzi in 1992 in another house that after not using it for months had those "black specks" come out of the pipes from lack of use. (Talk about sceeve!!!!!)Told DH no way were we getting another jetted tub. But DH has a super bad back. The air just was going to do it for him. And they've improved the jetted tubs in 15 yrs. with the air flush after the tub is off the clear the lines. So we really shopped and priced them out. Yes - it's noisy - it's a motor. But you know what? That part doesn't bother me. It has enough power in the jets to hit DH in the spots that he needs, I get the bubbles that I want - and we're both happy. And we can put in bubble bath stuff too. (Minimum amounts or it's like the tv episodes where it overflows with bubbles). Good luck

In our previous house, we had one from Jacuzzi that is tub/shower which included the full enclosure. (5w X 2.5d X 7h). We added a steam generator unit and shower wall jets to the side too! We used it weekly for 8 years. Although a little small, we had no problems.

I'm with you. Going from 1/2" to 3/4" supply line should be significant in the amount of time it takes to fill the tub, but that sounds like a manufacturer's recommendation, not a code issue. Since he is claiming a SF code requirement, you should probably call the building inspector's office there for guidance.