I have used them this year on 2 separate occasions (2015). once in march and then again in april. The March issue was my kitchen sink, it was clogged bad and my pipes were a home rig job which needed to be replaced. I was very pleased with their work, efficiency and thoroughness. They totally fixed the clog and re-piped under the kitchen sink. I was SO pleased and relieved, it's not cheap but they do quality work. This was a clog that no chemicals were going to help.

Today 4/9/15 i had them come out to the house again to fix a pipe leak connected to my washer. Very pleased with the work, they are thorough and explain to you what they did, show you the whole area and are pleasant and courteous. I will be needing to have my whole house redone with new piping and will have them do it. Very pleased with them and happy i found them. I actually went online to see if i could find some reviews on them and after reading what i could find i decided to try them, glad i did. Their rates are comparable with the rates other plumbing companies in my area were offering, i know because i called a few other places to see who had the best rates and they all are about the same. At least the quality companies i researched. I do not want just any body working at my home as a side job, don't trust their work and it will not be guaranteed. Anyhoo! hope this review helps you decided.

If by on time guarantee they mean, call you at the last minute when they are supposed to be there and tell you it will be another few hours before someone arrives, then yes, they have a wonderful on time guarantee.