Before Buying A Solar Water Heater : Ask the following Questions

 

  Name of company “AVIN” Company X Company Y
1 Experience in solar water heaters in years Since 1980

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2 Quality of hot water Hottest Hot Warm
3 Highest Temperature at which? 60 to 80 deg. C. 50 to 60 deg. C. 30 to 40 deg. C.
4 Quantity of water / collector 100 to 150 litres 80 to 100 litres 60 to 80 litres
5 Area of collector 2 sq. mtrs

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6 Chemical change in water after heating Better for health, salts removed, demonized

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7 Life Span of System  15 years

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8 Life Span of Collector 15 years

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9 Basic material used Bit higher-copper

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10 Maintenance per year

Plumber friendly

Every 5 years

yes

Unbearable

no

100 % replacement
11 Life span- according to water quality 10 to 15 years

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12 Resale value after life span Scrap value of copper on that day : good

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13 Payback period of system 2 – 3 years

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