Microsolar is considered the efficient system, while the common solar water heater is not efficient.
Solar heater, Solarwave
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 Apr 24 2018, 08:59 AM
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12,019 posts Joined: Jan 2003 
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Apr 24 2018, 12:08 PM
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#2
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QUOTE(ozak @ Apr 24 2018, 11:55 AM) Ok, lets calculate the cost at 20yrs usage between electric storage heater and solar heater. Base on the max solar heater lifetime. (some claim at 15yrs) Solar heater can also be lighting problem if the earth not done correctly. Don't forget it have heating element tooSolar heater Price range at RM5.5k. Maintenance 4x in 20yrs - 4x900=RM3.6k Total usage cost - RM5500 + RM3600 = RM9100 Storage heater Price range at RM850. (68L Joven) Usage perday boil once perday at for 60min at 3kw. 3kw x 365/12 = 91.25kwh/mth. If your bill is RM100/mth, that is 0.28 x 91.25 = RM25.55/mth For 20yrs electric usage - RM25.55 x 12 x 20 =RM6132 Maintenance - For safety reason and lifespan, give it 10yrs to change once. So in 20yrs require 2unit. And the 2nd unit price might be up. Put it at RM850 +RM200 = RM1050 Total usage cost - RM850 + RM6132 + RM1050 = RM8032. I will use solar heater for safety reason. Storage heater for the cost usage.  |
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Apr 26 2018, 08:29 AM
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#3
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QUOTE(ozak @ Apr 26 2018, 12:45 AM) I think there is something wrong with your unit. Not change since in 2011 dec.1.5yrs is crazy short life. Doesn't makesense every 1.5yrs got to change the heater. weikee how long the heater last ? |
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Apr 26 2018, 08:31 AM
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#4
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QUOTE(sgpdsmss @ Apr 26 2018, 07:03 AM) the joven installer checked told everything OK ...nothing wrong..he told some place customer change heating element every year ...so is make sense ...unless the installer lie me ... If water is an issue, solar storage may also cause problems. The solar storage is also metal/s.steel and many piping inside the solar too.some case may due to incoming water something like ph thing causing short life spend.... |
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Apr 26 2018, 04:05 PM
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#5
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QUOTE(sgpdsmss @ Apr 26 2018, 01:02 PM) no use solar heater b4...not sure about it.. Where got in Malaysia. I don't have problem since move in 2011, and i stay in Malaysia.cost about rm200...depend on tank storage size... the tank installed by the developer... yes replace heating element after few times price equal to get good instant heater ... my friend in singapore using joven heater tank ...he used more than 20years without any problem ... but in malaysia...heating element always giving problem ... wonder is design product different between country ? or incoming water issue ? or others issue ? installation wise...the installer will install according to joven installation guide ... thanks ... |
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Apr 26 2018, 06:06 PM
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#6
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QUOTE(sgpdsmss @ Apr 26 2018, 06:03 PM) May i know Landed, USJ area, i am using 3M AP902 for incoming filter.where is your location? incoming water clean ? install outdoor water filter ? landed? maybe my area issue ? ...my neighbor also encounter the same problem ...but his one can last about 2years ... think may consider instant water heater .. thanks .... |
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Apr 26 2018, 06:22 PM
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#7
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QUOTE(sgpdsmss @ Apr 26 2018, 06:08 PM) ive no use outdoor filter ...is that possible causing short life spend? Doubt so, how is your house water (direct) If your water is ok for laundry, it will be okay to be use for storage heater. Have you seen the damage heating element? how is it look like? |
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Apr 28 2018, 05:17 PM
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#8
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If its lime/calcium build up can always sand it off. Look like your water need some filtering.
Is the element break? not generating heat. This usually happen when is too hot usually only happen if its "dry burn" without water or the element is not 100% into the water. |
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