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Before You Buy

Sr.

Name of company

"AVIN"®

Company X

Company Y

1

Experience in solar water heaters in years

Since 1980

?

?

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

?

?

6

Chemical change in water after heating

Better for health, salts removed, demonized

?

?

7

Life Span of System

 15 years

?

?

8

Life Span of Collector

15 years

?

?

9

Basic material used

Bit higher-copper

?

?

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

?

?

12

Resale value after life span

Scrap value of copper on that day : good

?

?

13

Payback period of system

2 – 3 years

?

?