best combi boiler to replace aging worcester 35cdi without losing flow rates

[drainrod]

worcester 35 cdi requires replacing
any thoughts on best replacement combi ?
looking for more flow rate at shower too

 

[Riley]

I’m not having a go but I don’t understand why the time saved, cheaper option is better

 

[malx42]

I don’t know if it’s just me though, I think of myself as a very good communicator with customers and it is amazing the amount of them that are so misinformed when it comes to combis. They all think of a hot water cylinder, be it unvented or vented as being antiquated and think that a Combi is supermodern. I hear all the time people saying but that’s fine no one in our house showers at the same time but they can’t see how circumstances can change in the future or when they come to sell the property all these sorts of things will be flagged up and it will cost them long term

I wish these things were flagged up when purchasing a property. My daughter has just moved into a 1935 house ... looks Great. She had a top of the range building survey. Nothing done on the plumbing apart from turn on taps. The incoming main is 15 mm. Combi boiler at one end of house. Flow rate at bath (one tap) 11 lpm, with nothing else being used. Two bathrooms. 35 kw boiler. Sure that boiler would provide adequate hot water ... but limitations might be flow rate through long lengths of 15mm plastic pipe.

In America the max permissible shower flow rate is 2.5 US gallons per min .. 9.5 litres a minute ... this mus be a pretty good flow rate. In these environmentally friendly times perhaps we should be looking towards lower flow rates.

 

[malx42]

I don’t know if it’s just me though, I think of myself as a very good communicator with customers and it is amazing the amount of them that are so misinformed when it comes to combis. They all think of a hot water cylinder, be it unvented or vented as being antiquated and think that a Combi is supermodern. I hear all the time people saying but that’s fine no one in our house showers at the same time but they can’t see how circumstances can change in the future or when they come to sell the property all these sorts of things will be flagged up and it will cost them long term

I wish these things were flagged up when purchasing a property. My daughter has just moved into a 1935 house ... looks Great. She had a top of the range building survey. Nothing done on the plumbing apart from turn on taps. The incoming main is 15 mm. Combi boiler at one end of house. Flow rate at bath (one tap) 11 lpm, with nothing else being used. Two bathrooms. 35 kw boiler. Sure that boiler would provide adequate hot water ... but limitations might be flow rate through long lengths of 15mm plastic pipe.

In America the max permissible shower flow rate is 2.5 US gallons per min .. 9.5 litres a minute ... this mus be a pretty good flow rate. In these environmentally friendly times perhaps we should be looking towards lower flow rates.

I know what it is but a Cylinder is still better mate. Can do up to 50 lpm whereas 938 can do up to 20. To me that’s just about coping with demand

In America max permisssible flow rate for showers is 2.5 US gals a minute ... 9.5 litres, now that will be a hot and cold mix, say 6 litres of hot a minute .... enough for 3 showers simultaneously. 50 lpm seems a bit OTT.

 

[Riley]

I didn’t say you had to have 50lpm but the capability is there. Particularly if you’re running two big showerheads. That’s the difference with here and the USA though plumbing is a regulated skill whereas here any monkey with a bit of plastic pipe can call themselves a plumber

 

[Riley]

I wish these things were flagged up when purchasing a property. My daughter has just moved into a 1935 house . looks Great. She had a top of the range building survey. Nothing done on the plumbing apart from turn on taps. The incoming main is 15 mm. Combi boiler at one end of house. Flow rate at bath (one tap) 11 lpm, with nothing else being used. Two bathrooms. 35 kw boiler. Sure that boiler would provide adequate hot water . but limitations might be flow rate through long lengths of 15mm plastic pipe.

In America the max permissible shower flow rate is 2.5 US gallons per min .. 9.5 litres a minute . this mus be a pretty good flow rate. In these environmentally friendly times perhaps we should be looking towards lower flow rates.

And again surveys in this country are carried out by people that might know bits about a lot but the first thing they’ll do if they see an old floor standing boiler, even if it’s working really well is to flag it and say a new one will be required

 

[Jake Ford]

I replaced my camray combi with an external heatslave 2 with slightly higher specs just to save some floor space in the kitchen and the hot water supply is definitely inferior on the new boiler I always think don't fix it if it's not broken they don't make stuff like they used to!