Negative Head Pump with small tanks - is it even possible?

[Rodolphe]

A customer living in a flat wants to be able to take a shower and therefore needs a negative head pump. SOME flow rate would make them happy, doesn't have to be very strong.

However they have 2 small, crappy, plywood-insulated tanks located side by side in their cupboard (so an added benefit is that their cold water gets lukewarm and their immersion heater is set to 75 degrees in order to compensate for the cold water tank cooling the hot water).

These tanks are small. No way do they reach 50 gallons, more probably about 10.

Is there anything that can be done without having to install a complete new cold/hot tanks system which they can't afford?

 

[erpkid]

I would not think so as even for a 1 bar pump 50 gallons is the absolute minimum. Also if they are heating with an immersion the recovery time will be pants. Looks like they will have to save up.

 

[Avatar]

When you start adding it up on a job like this you start to wonder how much it would cost to fit a combi which would solve all the problems in one go.

It will be at least £400 just for a nice Stuart Turner pump . . .

 

[Rodolphe]

Yes, pretty much where I was at.

What about a power shower then? I can't find min tank size requirements...

 

[vern]

Combi or cheaper fit an electric shower if mains pressure is ok

 

[Rodolphe]

Thanks to all. As always, you guys are so helpful.

 

[Avatar]

But bare in mind even with a good electric shower the install is not cheap.

The electric side can be quite expensive especially if you need an RCD on the consumer unit!

Basically if you have a newish consumer unit then it may not break the bank but still check it out . . . ;.

I have had an electric shower install run to £900 before!