Takagi Industrial Co USA

We couldn’t be more pleased with our tankless Takagi water heater which replaced our bulky leaking tank five years ago. While it is no faster for hot water to reach the farthest upstairs shower through the house pipelines, we are particularly pleased that we can seamlessly run two showers and dishwasher without turning lukewarm, no matter how long the shower-​taking. We use a bucket to catch «wasted» cold water for house plants. We continue to benefit from lower gas bills, space-​saving in garage and a pleasant surprise of increased home valuation.

We installed a T-​K3-​OS about a year ago. The unit works pretty well; but, it has not met the promise of saving energy and IMHO it waists a lot of water. Our gas bill went up as well as our water bill. You wait a long time for hot water while running the tap and wasting water in the process. We wait upwards of 3 minutes in the morning for hot water upstairs to take a shower. When we turn the hot water off and turn it back on in a relatively short time the water coming out is cold again, and the wait starts all over while wasting water. We never had this waiting issue with our old tank heater.
The contractor and Takagi customer service have not been much help in solving these issues. We are seriously considering going back to a tank water heater.