I was the owner of a resteraunt in Mississauga, and I used them a few different times over the course of the few years I had the business, and had them repair a few different things. I've always found them very proffesional, very prompt. I've dealt with more then of there plumbers, and they were all very polite, and proffesional, especially Patrick. I did have one odd time where I had a plumber who I thought wasnt very proffesional, and didnt know what he was doing, and I let Anta know and they were very apologetic and someone else came instead, which was pretty awesome. By the way, there very friendly over the phone, there receptionists were very friendly, and very knowlegable, they've generally know the problems right when I described them (one lady named tatiana I think was very knowlegable)
I had an older store so things would break down randomly at odd times. I liked how I never had to wait to long in emergancy situtations, they would come asap. When I renovated my store before I sold it, I had a few different things I needed done, and Patrick even offered to come after the resteraunt closed so then it wouldnt affect my business (water being essential to operating the resteraunt!) Many of the parts I had were older and no longer available, but he kept me informed all the while of the various newer parts and gave me the choices of the different options.They gave me a warrenty, and everything, so I didnt have to worry about anything going wrong.
Price wise they were very reasonable, I find there prices midrange, which is good (Go to low in the GTA and you know your gona have to pay someone else to come again! speaking from experience.) As I said I have various things done through them, and dealt with them repetedly.