Running two thermostatic showers

[Daljit]

Hi

I'm developing an HMO rental property which will have 4 tenanted rooms, two bathrooms and a shared dining kitchen over three floors. I'm keen to provide good quality showers in each bathroom and in all likelihood both would operate at the same time (eg mornings). I have limited storage space for a tank. I don't find electric showers can deliver as good a flow rate as thermostatic showers.

The mains pressure hasn;t been measured but i would generally describe it as strong - the mains CW tap gushes out.

There is gas CH in the property, although boiler needs replaced.

I wondered if using two 30 KW combi boilers would be possible on a single domestic gas meter. Gas meter is on ground floor, 6m pipe run to first floor where current boiler is located, and 10m to second floor (possibly location of second boiler).

Would appreciate thoughts.

 

[johnny2007]

With combi boilers, if running 2 showers, flow goes down drastically, especially on top level.
Said that, a 30kw boiler delivers a good flow and when 2 showers operate simultaneously they're still ok.
I have this setup in my house and find it ok.
Although, I prefer to wait 5 minutes if someone is taking a shower so to have a nice strong jet of water falling on me.

 

[Madrab]

An electric shower will never reach the output of a mains fed shower but It is all dependent on the mains and what that can deliver in terms of properly tested dynamic pressure and flow rates.

A smaller combi, say 24kw, will deliver plenty of hot water for 1 shower so 2 of them may be ok and could probably be served by a U6 meter but again it is all dependent on the mains. The ideal would be a large, high rate recovery, unvented HW cylinder and a good boiler on PDHW.

 

[Daljit]

The ideal would be a large, high rate recovery, unvented HW cylinder and a good boiler on PDHW.

I suspect this is the way to go.

I don't know much about these products. Looking at the Megaflow (only brand i've heard of), their slimline version could be accommodated in one of the bathrooms.

 

[foxhole]

Two boiler are possible , have 24kw in annex and 30kw combi in house off same supply .