To Megaflo or not to Megaflo!

[rickshaw]

Hey Guys,

New to the forums, soo apologies if this is in wrong place or angered the locals!

Stuck in a bit of a dilemma, just had a loft conversion done and will be adding a third shower toilet to the house (5bed).

Currently running a combi boiler alpha ocean 240p, pressure upstairs has always been low while taps being used downstairs or shower.

Uncle had said megaflo maybe the best solution as there are 7 of us in total, which equates to alot of use.

Wanted to ask the following:

what is megaflo?
what really are the benefits of megaflo?
How is the water sent equally to all places?
Direct Vs Indirect?
change of piping? (currently 15mm)
Price of install?

From some research thinking of 210, 250 or 300
Thanks in advance

 

[mickyg]

what is megaflo?

megaflo is just a brand name(like hoover), what your referring to is an Unvented Hot Water Storage Cylinder.

what really are the benefits of Unvented Hot Water System?

It "can" provide high pressure to the hot water outlets allowing multiple outlets being used at the same time and providing desirbale shower pressures and bath filling. "However" it can deliver no more than what comes in from your mains so if your cold main flow is poor it will be a waste of time.

How is the water sent equally to all places?

Its not really it will still prioritise based on gravity and resistance, but if you have a good system it will appear equal.

Direct Vs Indirect?

direct is just for people with no gas or heat source and heated by electric only.

change of piping? (currently 15mm)

yes that would be a good idea, and possibly from the road also

Price of install?

impossible to say, to many variables

From some research thinking of 210, 250 or 300

size of tank depends on a number of factors, not only how many people but the habits of use, time of day etc.. and how much water is likely to be required at any one time. Many cylinders have quick reheat times so its possible to use a smaller cylinder for more people.

 

[muggles]

To just add to Micky's responses a bit... You need to know your mains flow rate and pressure before deciding to purchase. Direct cylinders heat up a lot slower than indirect ones, another good reason to have indirect especially considering your high usage. You'll want at least a 25mm main from the road to your house, and maybe even 32mm would be beneficial if you can get it. It's going to be a lot of upheaval, work, and expense whichever way you look at it.

 

[rickshaw]

Thank you both for your quick and informative replies!

another quick question if i may, how do i go about finding out my mains flow rate and pressure?

Thanks again

 

[crockett]

You would need to buy the correct measuring equipment to do this, or call a local plumber who may have these to inform you

http://www.inspectapedia.com/water/Water_Pressure_Measure.htm

Have a read of this if you like, it may enlighten you a bit more.