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COMPARISON OF SOLAR WATER
HEATER ranked by cost efficiency (most hot water at lowest cost)
(please
counter check with the respective manufacturer, as some models may change
specifications year to year)
US$1.00 = RM3.60 (Ringgit
Malaysia 3.60) 1 UK Gal = 4.546
litres
|
Brand of Solar Water Heater
|
PRICE
inclusive basic installtn(RM)
|
No. of
Valves
(panel to
tank)
|
Total Capacity
Gals Litres
|
MAX.TEMP. ºC Stated
or Estimated,*(please
check)
|
TEMP RISE
ºC(Max. Temp.-Base
25ºCTemp.)
|
Heat
Storage Capacity Kcal =Total
Capacity ltrs x Temp. Rise ºC
|
Cost Efficiency litreºC/RM or
Kcal/RM
|
Cost Efficiency RM/litre ºC or RM/Kcal
|
Total Collector Panel Area
m²& Glazing Type
|
Hot Water Tank Material(S/S= stainless steel)
|
Outer Casing Material Tank
|
|
Microsolar
6 pax M60VTHE Indirect
Vacuum
|
5,190
|
40
|
55
gals 250
ltrs.
|
95ºC stated(tested Kuala Lumpur)
|
70°C
|
17,
500 ltr°C
= 17,
500 Kcal
|
3.372 kcal
|
RM 0.297
|
3.2m²
(20 nos. EGVT 58ø x 1800mm)
|
Stainless Steel 304
|
Mirror Finish
S/S 304
|
|
Microsolar
8 Pax
M80VTHE Indirect Vacuum
|
7,490
|
60
|
75
gals
340
ltrs.
|
95ºC stated(tested Kuala Lumpur)
|
70ºC
|
23,800
ltrºC
= 23,800
Kcal
|
3.178 kcal
|
RM 0.315
|
4.32m²
(30 nos. EGVT 58ø x 1800mm)
|
Stainless Steel
304
|
Mirror Finish
S/S 304
|
|
Solarpollo
|
4,500
|
2
|
60gals
270
ltrs.
|
60-70ºC est.
|
45ºC
|
12,150
ltrºC
= 12,150
Kcal
|
2.700 kcal
|
RM 0.370
|
3.63m² Single Glazed
|
Stainless Steel
304
|
Aluminium
|
|
Solarela
318 Direct Vacuum
|
3,500
|
18
|
39
gals 178
ltrs.
|
75ºC stated
|
50ºC
|
8,900
ltrºC
= 8,900
Kcal
|
2.543 kcal
|
RM 0.393
|
2.34m²
(18 nos. EGVT 47ø x 1500mm)
|
Stainless Steel
304
|
Alum Zinc Alloy Steel
|
|
Powerlite
|
4,000
|
2
|
55gals
252
ltrs.
|
60-65ºC est.
|
40ºC
|
10,080
ltrºC
= 10,080
Kcal
|
2.520 kcal
|
RM 0.397
|
2.96m² Single Glazed
|
Stainless Steel
304
|
Aluminium
|
|
Pecol
|
4,800
|
2
|
66gals
300
ltrs.
|
60-65ºC est.
|
40ºC
|
12,000
ltrºC
= 12,000
Kcal
|
2.500 kcal
|
RM 0.400
|
3.87m² Single Glazed
|
Stainless Steel
304
|
Aluminium
|
|
Solarela
312 Direct Vacuum
|
2,500
|
12
|
26
gals 118
ltrs.
|
75ºC stated
|
50ºC
|
5,900
ltrºC
= 5,900
Kcal
|
2.360 kcal
|
RM 0.424
|
1.59m²
(12 nos. EGVT 47ø x 1500mm)
|
Stainless Steel
304
|
Alum Zinc Alloy Steel
|
| Solarmate
|
5,200
|
2
|
60gals
270
ltrs.
|
60-70ºC est.
|
45ºC
|
12,150
ltrºC
= 12,150
Kcal
|
2.337 kcal
|
RM 0.428
|
3.72m² Single Glazed
|
Stainless Steel
304
|
Aluminium
|
| Summer
Direct
(CX)
|
5,950
|
2
|
66gals
300
ltrs.
|
60-70ºC est.
|
45ºC
|
13,500
ltrºC
= 13,500
Kcal
|
2.269 kcal
|
RM 0.441
|
4.00m² Single Glazed
|
Stainless Steel
304
|
Aluminium
|
|
Beasley
|
6,950
|
2
|
66gals
300
ltrs.
|
60-70ºC est.
|
45ºC
|
13,500
ltrºC
= 13,500
Kcal
|
1.942 kcal
|
RM 0.515
|
4.00m² Single Glazed
|
Stainless Steel 304
|
Aluminium
|
|
Edwards
|
7,800
|
2
|
66gals
300
ltrs.
|
60-70ºC est.
|
45ºC
|
13,500
ltrºC
= 13,500
Kcal
|
1.731 kcal
|
RM 0.578
|
3.96m² Single Glazed
|
Stainless Steel 316
|
Aluminium
|
|
Summer
Indirect
(TX)
|
9,950
|
2
|
66gals
300
ltrs.
|
75-80ºC est.
|
55ºC
|
16,500
ltrºC
= 16,500
Kcal
|
1.658 kcal
|
RM 0.603
|
4.00m² Single Glazed
|
Stainless Steel
304
|
Aluminium
|
|
Thermomax Indirect
Heat Pipe
|
6,000
|
20
|
30gals
137
ltrs.
|
89ºC stated
|
64ºC
|
8,768 ltrºC
= 8,768 Kcal
|
1.461 kcal
|
RM 0.684
|
2.55m²
(20 nos. EGVT)
|
Stainless Steel 304
|
Aluminium
|
|
Solahart
Indirect
|
12,000
|
|
66gals
300
ltrs.
|
60-70ºC stated
|
50ºC
|
15,000
ltrºC
= 15,000 Kcal
|
1.250 kcal
|
RM 0.800
|
4.00m² Single Glazed
|
Ceramic Coated Mild Steel
|
Aluminium
|
|
Solahart
Direct
|
6,250
|
2
|
66gals
300
ltrs.
|
45ºC stated
|
20ºC
|
6,000 ltrºC
= 6,000 Kcal
|
0.960 kcal
|
RM 1.042
|
4.00m² Single Glazed
|
Ceramic Coated Mild Steel
|
Aluminium
|
More
no. of valves & larger glass area = faster reheat time (no need of backup
electric heater) & higher overall temperature (more hot water).
* sunny days (clear
blue sky) in Kuala Lumpur, Malaysia, temperature measured at showerhead from 2
litres drawn off tank. No other water
drawn off.
Stated temperatures as quoted from respective catalogues. Where manufacturers do not provide
temperature readings in their catalogues,
estimates given above are based on
customer feedback. However, it is best to obtain written temperaturecommitments from those manufacturers concerned.
All temperature readings taken during 1st year of operation
for collectors.
EGVT
= Evacuated Borosilicate Glass Vacuum Tubes, diameter x length), S/S = stainless steel 1 Kcal = 1 litre x 1ºC rise in tempearture
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