Hot Water/Combi Boiler query

11fernsroad

Hi
Our house has got pretty new 38CDi Classic Worcester Combi Boiler-when we installed it last year we were only using 2 bathrooms-even then we had hot water pressure loss when two showers were used same time,or even when kitchen sink used.
Now we have our parents moving in and need another shower to be used.
Wondering what are the options to get good pressure hot water supply to all three showers.Our neighbour told us to install electric shower in one or two shower cubicle to reduce the burden on combi,while few others suggested Megaflow etc.
Can anybody suggest cheapest option(with approximate costs) to get decent flow in all shower cubicle.
We still have an old tank in the loft from previous conventional boiler installation.
Many thanks

HappyMJ

Get everyone to shower at slightly different times so only one shower in use at any one time. An electric shower would help too and would also be handy in case the boiler ever became faulty as you can still have a shower whilst waiting for a repair.

macman

You cannot expect even a powerful combi to provide sufficient flow to 3 showers simultaneously.
To solve the problem you'd need a new boiler-a combi is really not suitable for such a property.
Swapping one to an electric shower is the cheapest solution if you can't stagger your showering times.

ispookie666

I had installed a Hot water cylinder and it cost me £760 all inclusive (tall cylinder).
I know its not the info you are after.
Electric shower - great suff, but uses at least 10KW power and add to that water!!!

Plumber90

Electric showers are useless. If you like a nice hot shower the water just trickles out.

If you want to do it properly you need a boiler and unvented cylinder aslong as you have descent incoming flow rate and pressure on the water main.

C_Mababejive

Perhaps you were ill advised when you bought the combi boiler system? who sold it to you?

11fernsroad

Plumber90 wrote: »

Electric showers are useless. If you like a nice hot shower the water just trickles out.

If you want to do it properly you need a boiler and unvented cylinder aslong as you have descent incoming flow rate and pressure on the water main.

Hi
1.How can I get the flow rate and pressure measured?
2.Now that I have invested in a Combi-can it be used to feed a cylinder?
3.How much would it cost to install a megaflow or any cheaper alternatives?
Many Thanks

Plumber90

11fernsroad wrote: »

Hi
1.How can I get the flow rate and pressure measured?
any plumber will be able to do it, or you can go to any plumbers merchants and buy a weir cup and pressure gauge to take the readings.
2.Now that I have invested in a Combi-can it be used to feed a cylinder?
yes it can be linked up to a unvented cylinder
3.How much would it cost to install a megaflow or any cheaper alternatives?
without looking at it I wouldn't be able to say off the top of my head, what is your location as that plays a big part
Many Thanks

*Megaflows are good but are more expensive than others

11fernsroad

Plumber90 wrote: »

*Megaflows are good but are more expensive than others

Hi
Location :Newbury/Berkshire
Thanks for the information
If I can source a second hand 300litre Megaflo-how much should expect to be paying up to get it installed-next to the mains in garage?