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COMPARISON OF SOLAR WATER
HEATER ranked by cost efficiency (most hot water at lowest cost)
(please
counter check, as some models may change specifications year to year) US$1.00 = RM3.80
|
Brand of Solar Water Heater
|
PRICE inclusive
basic installation (RM)
|
No. of Valves (panel to
tank)
|
Total
Capacity Gals Litres
|
MAX. TEMP. ēC
Stated in brochures or Estimated, * (please check)
|
TEMP RISE
ēC (Max.
Temp. -
Base 25ēC Temp. )
|
Heat
Storage Capacity Kcal = Total
Capacity ltrs x Temp. Rise ēC
|
Cost Efficiency RM/litreēC = RM/Kcal
|
Total Collector Panel
Area m˛
& Type of Glazing (EGVT= Evacuated Borosilicate Glass Vacuum Tubes, din x length)
|
Hot Water Tank Material
|
Outer Casing
Material Tank and Panels
|
|
Microsolar
6 Pax M60VTHE Indirect Vacuum
|
4,290
|
40
|
58gals
264
ltrs.
|
95ēC stated
(tested in
Kuala Lumpur)
|
70ēC
|
18,480ltrēC
=
18,480Kcal
|
RM 0.232
|
3.2m˛
(20 nos. EGVT 58Ø x 1800mm)
|
Stainless steel
304
|
Mirror Finish
S/S 304
|
|
Microsolar
8 Pax M80VTHE Indirect Vacuum
|
6,190
|
60
|
78gals
356
ltrs.
|
95ēC stated
(tested in Kuala Lumpur)
|
70ēC
|
24,920
ltrēC =
24,920 Kcal
|
RM0.248
|
4.32m˛
(30 nos. EGVT 58OØ x 1800mm)
|
Stainless steel
304
|
Mirror Finish
S/S 304
|
|
Aztec
|
4,250
|
2
|
56gals
255
ltrs.
|
78ēC est.
|
53ēC
|
13,515ltrēC
=
13,515
Kcal
|
RM 0.314
|
2.70m˛
Single Glazed
|
Stainless steel
304
|
Aluminium
|
|
Pecol
|
3,800
|
2
|
66gals
300
ltrs.
|
60-65ēC est.
|
40ēC
|
12,000
ltrēC=
12,000
Kcal
|
RM 0.317
|
3.87m˛
Single Glazed
|
Stainless steel
304
|
Aluminium
|
|
Solarmate
|
3,950
|
2
|
60gals
270
ltrs.
|
60-70ēC est.
|
45ēC
|
12,150
ltrēC =
12,150
Kcal
|
RM 0.325
|
3.72m˛
Single Glazed
|
Stainless steel
304
|
Aluminium
|
|
Powerlite
|
3,450
|
2
|
55gals
252
ltrs.
|
60-65ēC est.
|
40ēC
|
10,080
ltrēC =
10,080
Kcal
|
RM 0.342
|
2.96m˛
Single Glazed
|
Stainless steel
304
|
Aluminium
|
|
Solarpollo
|
4,200
|
2
|
60gals
270
ltrs.
|
60-70ēC est.
|
45ēC
|
12,150
ltrēC =
12,150
Kcal
|
RM 0.346
|
3.63m˛
Single Glazed
|
Stainless steel
304
|
Aluminium
|
| Solarela
318 Vacuum Tubes |
3,188 |
18 |
39gals
178 ltrs.
|
75°C
stated |
50°C |
8900
ltr°C = 8900 Kcal |
RM0.358 |
2.34m˛
(18 nos. EGVT47Ø x 1500mm) |
Stainless steel
304 |
Alum
Zine Alloy Steel |
| Solarela
312 Vacuum Tubes |
2,248 |
12 |
26gals
118ltrs
|
75°C
stated |
50°C |
5900
ltr°C = 5900 Kcal |
RM0.381 |
1.59m˛
(12 nos. EGVT47Ø x 1500mm) |
Stainless steel
304 |
Alum
Zine Alloy Steel |
|
Edwards
|
5,950
|
2
|
66gals
300
ltrs.
|
60-70ēC est.
|
45ēC
|
13,500
ltrēC =
13,500
Kcal
|
RM 0.441
|
3.96m˛
Single Glazed
|
Stainless steel
316
|
Aluminium
|
|
Summer
|
5,950
|
2
|
66gals
300
ltrs.
|
60-70ēC est.
|
45ēC
|
13,500
ltrēC =
13,500
Kcal
|
RM 0.441
|
4.00m˛
Single Glazed
|
Stainless steel
304
|
Aluminium
|
|
Beasley
|
6,950
|
2
|
66gals
300
ltrs.
|
60-70ēC est.
|
45ēC
|
13,500
ltrēC =
13,500
Kcal
|
RM 0.515
|
4.00m˛
single Glazed
|
Stainless steel
304
|
Aluminium
|
|
Solahart
Indirect 300JK
|
8,950
|
|
66gals
300
ltrs.
|
60-70ēC stated
|
50ēC
|
15,000
ltrēC =
15,000
Kcal
|
RM 0.597
|
4.00m˛
Single Glazed
|
Ceramic Coated
Mild Steel
|
Aluminium
|
|
Thermomax Indiect
heat Pipe
|
6,000
|
20
|
30gals
137
ltrs.
|
89ēC stated
|
64ēC
|
8,768 ltrēC =
8,768 Kcal
|
RM 0.684
|
2.55m˛
(20
nos EGVT)
|
Stainless steel
304
|
Aluminium
|
|
Solahart
Direct 365D
|
6,250
|
2
|
66gals
300
ltrs.
|
45ēC stated
|
20ēC
|
6,000 ltrēC =
6,000 Kcal
|
RM 1.042
|
4.00m˛
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 temperature commitments from those manufacturers
concerned.
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