Over sized boiler for property

[Matt0029]

I went to look at a 2 bedroom bungalow with one bathroom which encorparted only a shower. That has a 35kw combi. The gas pipe is correctly sized as the meter is on the external wall ajasant from the boiler. And no other gas appliances. There is about 8 rads and 2 towel rads in the house. Would the customer really notice the difference of a 35kw boiler over a 30kw. I no a 30kw does a 35 degree rise at around 12.5 lpm. And a 35kw wil give 14.5 lpm with a 35 degree rise. With there only being one bathroom and a shower not a bath. Would it be noticeable to have a 35kw boiler over a 30kw. Thanks.

 

[Scott_D]

If they have enough flow I would go for the 35kw
The heating output will
Probably be the same on both models

 

[ShaunCorbs]

Most showers are flow restricted so maybe not kitchen tap would be the one

is the cold water main above 14lpm ?

 

[Matt0029]

I went to look at a 2 bedroom bungalow with one bathroom which encorparted only a shower. That has a 35kw combi. The gas pipe is correctly sized as the meter is on the external wall ajasant from the boiler. And no other gas appliances. There is about 8 rads and 2 towel rads in the house. Would the customer really notice the difference of a 35kw boiler over a 30kw. I no a 30kw does a 35 degree rise at around 12.5 lpm. And a 35kw wil give 14.5 lpm with a 35 degree rise. With there only being one bathroom and a shower not a bath. Would it be noticeable to have a 35kw boiler over a 30kw. Thanks.

Most showers are flow restricted so maybe not kitchen tap would be the one

is the cold water main above 14lpm ?

I had about 18 to 20 lpm with a weir cup in the cold mains. I no its over sized for the house he just bought the boiler himself 8 years ago. But not sure his getting much benefit out of the 35kw with just one bathroom that only has a shower and a kitchen tap. His due a new boiler old one not cost effective to repair.

 

[ShaunCorbs]

i would quote for two and let him decide

 

[Matt0029]

Most showers are flow restricted so maybe not kitchen tap would be the one

is the cold water main above 14lpm ?

What does a standard shower flow restricted take to flow down to? This is to stop the shower tray over flowing?

 

[ShaunCorbs]

around 10 lpm normally its more down to water wastage / efficiency

 

[Matt0029]

around 10 lpm normally its more down to water wastage / efficiency

Thanks. Is this the restrictor that sits in the shower hose? Or somthing internal in the shower?

 

[ShaunCorbs]

internally most of the time with the nrv