One of the easiest smart home improvements someone can make is to install a PV hot water heater in their home.
Living808, KHON2 | February 10, 2016
0:00 Trini: one of the easiest smart home improvement that someone can make is to
install a PV water heater, now, we’re learning all about that today. I’m with Eric Carlson with RevoluSun. Hello!
0:10 Eric: Hi, Trini. How are you?
0:12 Trini: I’m doing great, how are you?
0:14 Eric: Good.
0:15 Trini: All right, before we get to the PV hot water heater what is the difference between a normal hot water heater and PV hot water heater?
0:25 Eric: Right, so as you probably know Hawai’i has adopted solar water heating for a long time, in fact one in four homes in Hawai’i has a traditional solar hot water collector, and that’s great because that’s one of the first places you should start to make your home more efficient. But the big difference between the two technologies is, with existing solar hot water systems, they’re taking the heat from the Sun and heating the water via the panels on the roof, with this new technology we’re actually taking electricity from the Sun and using it to heat the water.
1:00 Trini: Okay, I’m following you, but I’m still not—why, is that such a big difference?
1:04 Eric: Well, here’s the difference. Traditionally or in the past the thermal way was was the popular choice because it was the most cost-effective, but because solar PV prices have come down so much we have a new way to harness the Sun that’s more efficient. And so, with this tank that you see here it’s it looks like a standard water tank like you’d see, but what you don’t see here is all of the pumps and extra plumbing that was required in the old system, that takes the cold water and pumps it up to the roof. Now by putting PV panels on the roof we’re just sending electricity from the panels down into the tank. So we eliminate a lot of the complexity of hot water system.
1:50 Trini: Okay, so this is easier to use, more efficient, and cost-effective. Okay, let’s talk about cost, how much more can someone save by having this kind of water heater?
2:01 Eric: Well we’ve seen for an average family in Hawai’i your gonna see anywhere between 80 to 100 dollars on your electric bill in savings, but that depends on how much hot water that family uses, so how much water the family uses will determine how much money they save on their electric bill.
2:18 Trini: Okay, and tell us about installation. What does that involve?
2:22 Eric: This is pretty straightforward and because we’re using PV panels on the roof that talk directly to the tank there’s no HECO approval that’s needed so it’s a really quick install in terms of time frame. You know, you call us up, we’ll do an inspection of your home and and create a system that is best suited for your family and then we can be in a number of days to install the system.
2:45 Trini: And you don’t have to wait for approval?
2:47 Eric: Correct.
2:48 Trini: You don’t have to wait to turn it on?
2:50 Eric: Right, that’s one of the best benefits about this system is that there’s—especially right now—everyone’s familiar with a lot of the backlog that we’re having there’s no HECO approval needed for this.
3:00 Trini: Okay, now this particular homeowner also has a pool tell us about how it, how it affects that.
3:10 Eric: Well so, there’s two big energy usages for a home and if you’re a pool owner, you’re very familiar that the costs that come with having a pool and so the other product we have is really it’s an ultra-efficient pool pump. So in the past, a traditional pool pump is on or off and with this one it kind of cycles up and down throughout the day, so it’s just a much more efficient way of cleaning your pool
3:34 Trini: Okay, and are there any rebates with either of these technologies?
3:38 Eric: There are rebates for both they’re both Energy Star, and then the state Solar Credits apply for the Sun Bandit.
3:47 Trini: Eric, sign me up! Thank you very much.