Both are managed by Grundfos, the have same standard for QC, why must ITALY things must be good? Should look more on the spec and material used rather than the origin. FYI, Grundfos is reputable for their original pumps (GRUNDFOS). Gemini was bought over by Grundfos.

Thanks Zein, really thumb's up for BUILDER'S HARDWARE, great after sales service. never expected to get a call...really appreciate it 
I will go up to the roof and check if the installation is correct as suggested by you and will revert...once again..thank you for the call.....

zheilwane, well technically QC for Italy should be better than TW right? At least that is my normal perception.

Anyhow, just check with my friend who had purchased this Gemini. He told me that Gemini material are majority plastic (good quality one), whereby Grundfos material is from steel (not stainless) and metal. So that sales people convince him that if get Grundfos, the steel will sooner or later become rusty since it's not stainless steel.

any comment?

zheilwane, well technically QC for Italy should be better than TW right? At least that is my normal perception.

Anyhow, just check with my friend who had purchased this Gemini. He told me that Gemini material are majority plastic (good quality one), whereby Grundfos material is from steel (not stainless) and metal. So that sales people convince him that if get Grundfos, the steel will sooner or later become rusty since it's not stainless steel.

any comment?

Just a quick question, where did u purchase the pump from? The seller cant help u? You should really buy from some1 who is professional and could give u good advise. For example, if ur plumber has done the piping as per ur photo, you will have some problems after the installation....

a) The most important thing, you need to install PVC unions as per grundfos requirements.

b) If cold water is boosted by the water pump while the hot water is using water tank's water, your hot water pressure will b much weaker than the cold water. So, when u r showering, you will feel the water is not hot enough as u r getting more cold water than hot. Therefore, the tank's outlet should go into your pump then split to ur heater and down to your bathroom. By doing this, you will have same pressure for both hot and cold.

c) The pump by pass is wrong. Imagine u r using 8-10" rain shower but ur pump is out of order, so you will b using the pump by pass. However, the water supply is from the tank, do you think u will have sufficient water pressure to power up the rain showers? You should do a main water by pass instead.

Here is how the installation should look like


Hope that answers ur question

My pumber just installed the CM3-5PT from Builders Hardware. Even he was impressed with the quitness of teh pump. Thanks Zheilanwane and Builders Hardware. You guys were the cheapest out there. It was worth driving down from Shah Alam to buy in Kepong )

picture plz

Got a quotation from a Grundfos recommended plumber to install CM3-5pc at RM550. Just wonder whether this price fair or not?

Grundfos body  is cast iron while impellers are stainless steel. Do you think plastic is more durable? Taiwan or Italy, they are also managed by Grundfos with their sets of rules and QC. However, with the price that we are offering, our Grundfos Pump's price is quite close to Gemini, so most of our customers will get Grundfos.