I had a electric 40 gallon water heater that was getting old and did not supply the hot water supply my family needed. (with 4 girls) Mr. Feezell came out and sugested a on demand tankless gas water heater. since i had a gas furnace he said i was a good canadate for this unit. he explaned my opptsion and we desided witch unit would be best for me. his crew were vary proffinal and net with there work from reroughting the plumbing to installing the new gas line, proporly venting with out busting a huge hole in my brick home. needless to say i was vary happy with the end product everyone was so professional and cleaned up they even halled off the old water heater at no charge. i would highy recomend to anyone. we can now have 3 showers going washmachine and the dish washer going and we neve run out of hot water!