Hi,

I'm in Johor Bahru. I have low water pressure in my house. I'm thinking of installing a pump but do not know which is best. also does anyone have a good and reliable plumber to recommend? Thanks.

Hi looking for water pump but not sure how big motor needed. My house two storey with 4 bathroom. What motor size recommend? By the way is tsunami CMH-2-30K 0.5HP good?
Can this pump enough power for my house

Hi all the experts here, I am looking at this 2 option for my house. 3 stories medium size terrace house with 2 bathroom (1st floor and 2nd floor) and 1 powder room (ground floor).

1. Joven JHP 2-30
2. Grundfos Scala 2

Can share with me some precious advise? Thank you.

Price Joven win,
Reliability, pressure and quality GRUNDFOS

DOnt think u can find any good reviews for Joven pump, they are OEM and JOVEN is actually specialist for heaters not pump but Grundfos is the specialist for water pump

This post has been edited by zheilwane: Oct 17 2017, 09:51 AM

Different application needs appropriate appliance.

A. Central water pump for bath and shower with hot water plumbing is built in for central hot water storage tank (electric, hybrid heat pump, solar or a combination of it).

B. Instant hot water with pump is suitable where there's no separate dedicated hot plumbing in the bathroom. Electrical plug point and cold water divert inlet to water heater needs to be prepared beforehand.

If you want to go with A, ensure the bathrooms are already equipped with dedicated hot water plumbing and storage water heater have the necessary electrical connection ready for water pump. Otherwise it's a renovation of its own.

B is an easy retrofit where hot water plumbing is absent but the necessary for instant water heater is also prepared else need to renovate.

Usually top floor, water pressure suffers unless tangki has at least 10ft drop from its outlet to the bath fixture. Lowest floor powder room gain about 1 bar increase per 10m (33ft) drop from tangki outlet to their bath fixture.

Centralised pump benefits at least 2 bathrooms or more with centralised hot water and low water pressure. If hot water plumbing is already built in, go with A. You may not need to go with Scala 2, any smaller pump will do even a Hitachi. Ensure that the pump sits on an anti-vibration mat. Just ensure there's proper sediment point of entry filtration like membrane filter which will safeguard the water pump, storage / instant water heater and shower/taps and they will last a very long time. Scala 2 would do well with at least 2 to 4 bathrooms (8 taps) on the same floor ie bungalow experiencing water pressure issues. The lowest floors will be stronger as there's 1 bar gain per 10m drop already. But in situation where tangki is not on the top floor the uplift will benefit lower to upper floors, the Scala2 makes sense as max lift is up to 8m.

This post has been edited by halcyon27: Oct 18 2017, 05:43 AM

I’m using a joven pump.

I have been using it for 2 years and I am happy with it.

Much Cheaper than grundfos. Of course grundfos is a leader in pumps, but you have to pay so much more for it.

My joven pump gives me good water pressure and has been serving me well. I am happy with it.

If you have the money to spend, go for grundfos.

In my case I spent money on a major house renovation, buying the right product at a good price is important to ensure you don’t spend above your budget. Joven is a good established Malaysian brand too and at a good price. The pump is still serving me well.

Hi guys, is it wise to turn off the pump when not in use, e.g. from night time when everyone go to sleep or day time when everyone is not at home for whole day?

I think you should use extra vapor to increase water pressure

Don't turn off unless not using for a few days. Whenever you turn off/on that you are risking power surge that is harmful to electronics.

It depends on the number of water outlets you are turning on at the same time. The water pressure feels powerful enough with my Walrus 1hp pump with 3 outlets turned on.

Also to consider is if you want to buy a water pump with a reservoir or not. Having it will help your water pump to turn on less frequently but depending on the amount of water you use la. If you use more than reservoir everytime you turn on the tap then don't waste money on it.

Does variable pressure pump necessary? If use constant then turning on two or more points will reduce pressure?

want to ask regarding type of pipe can be used for water pump.

1st, I'm planning to replace all the pipe connected in my newly bought double storey house
starting from water meter until pipe connected to all the water fixtures in my house. Since this is
a old housen (>20 yrs old), then the pipe used was Galvanized Iron Pipes (GI)

The decision was made to change all the GI pipes because I'm planning to use water pump later and afraid because of the
high pressure and corroded old GI pipe, it will burst and become headache to me after that.Actually I'm changing tiles for all my bathroom
then make decision to change the concealed GI pipes also.

my question is now since i want to change all the GI pipe concealed in the wall, i wonder of what type of pipes should be used>

1. my contractor suggests to me to change:
from water meter<poly pipe >water tank in the ceiling<water pump>poly pipe to all fixtures>e.g water faucets in bathroom

2. my planning:
from water meter<poly pipe >water tank in the ceiling<water pump>PVC schedule 40 pipe to all fixtures>e.g water faucets in bathroom

the only diferent is using poly pipe and PVC pipe after the water pump to all the water fixtures

my concern is which is more resistance to leak for connection

PVC use glue for connection and Poly use threaded

need suggestions pls...

Wise choice. I learnt the hard way in my 33yo DSL with solar water heater and Grundfos Sofjet 2 7 years back when the GI pipes failed and the monthly water bill went up 15 fold.

Some suggestions:
1. Segregate WC and shower. The WC need not be pumped driven. But that means there'll be two cold branch going to your bathrooms. Downstairs not possible.

2. Pipe material determine if they will plasticise under high temperature in the roof. If the roof is insulated, not an issue. In terms of plasticization at 45°C in ascending order of resistance:
PVC < ABS < High Density Polyethylene (HDPE) < Stainless steel / copper

Sometimes uninsulated roof space reaches close to 50°C and where the roof slopes towards the front or back of the house, the roof tile nearer where the pipes descends into the brickwork of the toilet can be very hot exacerbating the tendency to soften non metal pipes.

PVC can be embedded inside the wall where it won't be subject to high temperature that causes it to deform. Care should be taken worth hot water pipes which should be at least 6-8" away.

3. This is one time pain but my old neighbour did this: reroute pipe from meter and rocket filter (with extra faucet for garden) up to the roof at the front of the house to the tangki. They branch this pipe to where the back GI pipe from the ground floor up to the tangki is replaced with poly towards the back where it branch to laundry and kitchen. If you're able to add a bigger tangki or an extra one, the back and kitchen will use this one. Definitely cost to rehack at the back and kitchen but not add bad as the whole house but the pipe doesn't run along the inside of the house from the front to the back anymore.

Care should be taken such that the pipes are spec for high roof temperature. HDPE like Hansen works well as its quick fitting. PVC, ABS, HDPE or steel can be embedded into the wall for bath/shower and sinks.

This post has been edited by halcyon27: Nov 16 2017, 12:01 PM

hi all sifus,

i'm planning to install water pump on my ceiling to pump water from my water tank in the ceiling.

the load for the water pump are going to be:

1. all water fixtures inside 3 bathrooms only (WC,shower,faucet)

note : kitchen & laundry will be supplied straight from main meter syabas. no need use water pump.

pls recommend the reliable water pump & quite one because gonna to be installed in the ceiling.

thanks!

Variable usually means if the water pressure drops then it will kick in stronger to maintain the pressure. I saw a demo at Builder's Hardware and that convinced me to get the SCALA2.

This post has been edited by Saros: Nov 24 2017, 03:23 PM

If not all bathroom is always use at the same time, better to get smaller pump.

I have 5 bathroom. And never use 5 at the same time. The most is two. But I bought a pump which cater for about 4 bathrooms. Mistake. The water piap at the joints had water leak problem, like once every year due to the pressure.

My house water pump (grundfos provide by developers) breakdown, ask someone to check, he say motor breakdown unable to repair need to change a new one. Want to know is it unable to repair if motor breakdown?

Double post

This post has been edited by iamGuest: Nov 25 2017, 09:17 PM

Hi, thanks for your advice. May I know what HP pump you bought? For 0.5HP some said for 2 bathroom and some said for 3 bathroom. I also confuse.