Background: There was an existing 35-year-old 'SolaHart' brand solar hot water heater on my Oahu home roof and it worked perfectly although it was older. Then I noticed it was slowly leaking. My trusted plumber had a look and it was the solar unit leaking and not the plumbing. It needed to be replaced. A split solar hot water heater would be $12k to 14k. Sun King: So a google search told me that Maui based 'Sun King' was the 'SolaHart' company in Hawaii. I gave them a call. They even had the records on the old unit. A new replacement SolaHart unit would be about $9k installed. So I received a quote and all the information about payment, installation scheduling, coordination with my roofing company as the roof needed replacement first. Like any solar system there is a time delay in installation due to ordering and scheduling. It is not like replacing a standard home hot water heater. But it's leaking now: Well these guys deal with this all the time. So they sent over Paul to assess the situation first hand and install a temporary electric hot water heater and disconnect the leaking unit. That didn't work out, but everything else was planned out and installation scheduled for about a month later after the roof was completed. The catch was that there would be no hot water for about a week while the roof work was ongoing. The old unit would have to be removed while the roof was replaced...so no hot water. Anyway eventually Paul and his experienced crew of plumbers, electricians and installers found a way to hook up and wire the temporary heater. It saved us from a week of cold showers. Yes!!! Satisfaction: 5 Stars. While home repairs, remodeling, renovation, on older homes don't always go smoothly. Everything worked out in the end. Bumps in the road may happen but it is their ability to deal with imperfect situations that are the key. Personally, I favor the simple SolaHart type of passive system (vs. the split system) because of the price and reliability. Remember the first one lasted 35 years. Google SolaHart for information. Check their website to see all that they have to offer. They do photovoltaic systems and more: https://www.sunkinghawaii.com/ The installation on top of the new roof was done with care and precision. It was bolted securely to the wood rafters. Maui Headquarters and Tax credits: Despite being headquartered on Maui they do travel to other islands. They had their own crew and truck plus 2 other trucks showed up. Somehow they had the ability to provide full services on Oahu. The office also assisted in providing information on tax credits. Very helpful because this clearly lowers the actual cost. Lyn from the front office, Paul, and each and every technician that I encountered was professional and pleasant. read more