4 story townhouse - Combi or Std boiler? Advice needed

[GaytonTonner]

Combi or System? It's largely down to your own preference. If you are considering an unvented cyl you are still utterly dependant upon your cold main flowrate to deliver everything in terms of water flow.

Correct. Some people on here think one these will improve water flow.

The only real difference between a combi and a system boiler is that the combi has a domestic water flowswitch and a plate heat exchanger. Neither of these components on their own will make the boiler significantly unreliable. You will need external extra equipment with a system boiler anyway.

Yep.

 

[mickyg]

A pump on a combi or any other systems will be in exactly the same situation. Being a combi is irrelevant.

Well you can tell that to the customer who last week needed a pump changing on his combi boiler. The pump in question was a Wilo, but specific to the appliance. It cost £189 just for the pump at trade price. A similar wilo pump for a standard system can be bought in screwfix for about £40.

Change just the head of the pump.

cant be done. if you were in the trade you'd know why.

 

[GaytonTonner]

A pump on a combi or any other systems will be in exactly the same situation. Being a combi is irrelevant.

Well you can tell that to the customer who last week needed a pump changing on his combi boiler. The pump in question was a Wilo, but specific to the appliance. It cost £189 just for the pump at trade price. A similar wilo pump for a standard system can be bought in screwfix for about £40.

Change just the head of the pump.

cant be done. if you were in the trade you'd know why.

It depends on what pump, model, etc. You should be out of the trade.

 

[mickyg]

A pump on a combi or any other systems will be in exactly the same situation. Being a combi is irrelevant.

Well you can tell that to the customer who last week needed a pump changing on his combi boiler. The pump in question was a Wilo, but specific to the appliance. It cost £189 just for the pump at trade price. A similar wilo pump for a standard system can be bought in screwfix for about £40.

Change just the head of the pump.

cant be done. if you were in the trade you'd know why.

It depends on what pump, model, etc.

exactly, you got something right. We should maybe have a celebration. Maybe your carers will let you out for the day as a reward.
Then again you probably read it somewhere else