heater exchange baxi duo tec ????

[tarb]

before i buy a new boiler can anyone give me peace of mind please
got a 10 year old baxi dou tec that's losing pressure within a few hours/. replaced expansion tank and prv which helped for a week but now just as bad
condensing pipe running all of the time and radiators constantly got air in them but cant find any visible leaks
been told heater exchange but been told the wrong diagnosis before
any help would be appreciated

 

[king of pipes]

Get it replaced it sounds likely a 10 year old boiler is not worth spending money on, the baxi platinum 33erp is a straight swap and will give you 10 year manufactures warranty . Kop

 

[Andyh]

Try isolating boiler from system via valve s
For 24 hours if pressure drops definitely boiler, however I've tried this before never had a positive result though . Put leak sealer in rad and then check condensate trap for the leak sealer , which shows leaking heat exchanger. And Baxi replace heat exchanger as part of one off repair, around 290 I think

 

[Last Plumber]

I'm with KOP on this one.

 

[tarb]

Thanks I’ll admit defeat and get a new boiler but just my luck I do and it was an easy fix lol

 

[tarb]

Losing pressure within a couple of hours and still thinking should I buy some leak repair fluid from Screwfix