Either you install a pump ($1500 + electricity bill) at tank area or you get plumber to do a bypass ($400) at tank to increase pressure...

Either bypass or pump, then you save money on buying water heater w/o the pump.... assuming the savinf for each water heater w/o pump gives you $250, then you'd have save 1k here.... up to owners to weigh the pros & cons of both bypass and pump

Btw anyone knows if the bumi lots for Casa Suria Ph 3 has been released? Am interested

Now if the incoming is low to begin with, then a good old reliable water pump will be needed at the meter and the tank area. However i believe most of the time, the incoming is strong, just the tank to the toilets are low. The bypass is done typically at the incoming into the tank hence the kitchen tap will not be affected even in use. If not mistaken, even the garden tap is coming from the tank for new houses these days (someone should try this).

The neighbours incoming will hardly be affected by the bypass. This is my experience as i'm currently staying next to this area. As a matter of fact, most of the houses here does the bypass (save cost). Even if one does not install a pump at the tank but buys a heater with pump, the water pressure is still lousy as compare to using pump/bypass but w/o heater pump (do compare against landed properties).

The only setback abt bypass is that when there is no water or low pressure at the incoming then you will experience normal low pressure but it saves you on electricity bill. With pumps, you get consistent pressure all the time but incurred higher electricity bill + maintenance of the pump after 5 yrs or so depending on model. In addition, then you may probably have lower water pressure b4 installing the pump when there is a blackout. I think the chances of blackout is higher compared to water cuts.

Just my 2 cents.