Super Quick shipment and arrival of Water Heater. Prior to purchase I spent at least 30 minutes on the phone with one of their employees. He went out of his way to answer all of my questions and to ensure I ordered the hot water that best suited my needs. Unless you have some plumbing experience I highly suggest hiring a pro to install a tankless water heater. They are much heavier than you would think and not only require basic pipe work and soldering but also specialized venting. My son in law and I both very experienced in home projects removed the old water heater and installed the new tankless in about 3 hours, which included a trip to the hardware store for plumbing parts. From my personal experience I would highly recommend dealing with this business. Thank you