Instant hot shower with pump function

September 18, 2006

How do you know whether to install a pump or a non-pump water heater? Simple answer. Install a pump model ONLY when you have low water pressure. Common sense will tell you that if your water pressure is high, you won’t need a pump model. This is because the hot water temperature may drop due to excessive water flow rate.


Panasonic DH-3BP1M

How do you check whether the pressure is too strong for you to install a pump model? If you have a current model or a normal shower head, turn the shower head upward. On the water tap and the splashing height should be not more than 110 cm.

An efficient pump water heater should be able to boost up water pressure from as low as 4.9kpa (0.1kgf/cm2).


Beebest BWH-6688EP

There are basically 2 types of pump models in the market. The DC pump (Carbon brushless system) with brands such as Panasonic, Beebest. and the AC pump (carbon brush ystem) with brands like Alpha, Joven . So, what’s the differences and which type should you choose?

Price difference by almost RM100 
AC : Cheaper
DC : More expensive

Noise level:
AC : Noisy
DC : Quiet (Beebest claims to be world 1st high efficiency silent pump)

Pump lifespan :
AC : Shorter life
DC : Longer life (Panasonic and Beebest give 5 years warranty for its pump)


Joven 830

Most of the water heater brands in the market come with AC pumps with prices about RM400 level. But then the AC pumps get overstressed easily and have shorter life span.

Alpha SH-88EP

If you can bear with those noisy pump sound, or if you can afford to change the pump every two years* (depends on how frequent the set is used) use the AC pump type. Otherwise, it is recommended to buy the DC pump type which is longer lasting and slightly more expensive.

Panasonic and Beebest comes with DC pump range. Beebest has additional pump control function but comes with a much higher price tag, RM580 vs Panasonic RM479. Check out the nearest electrical or hardware shops for more information. Happy shopping..

2 Comments »

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  1. Very informative on the shower heater (pump vs non-pump) & (dc-pump vs ac-pump).
    Hey, it helps me to decide as well.

    Comment by Hanifcostner — December 28, 2007 @ 3:06 pm

  2. Hanifcostner,

    Thanks for dropping by I will be starting my own domain blog very soon.. stay tuned.

    Comment by yeknee — December 28, 2007 @ 3:13 pm

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