I'm looking to replace my 11 year old Saunier Duval Thelia Twin 28E boiler which was installed when the house was built and is now causing problems on a regular basis.
My wife and three boys, aged 9, 13 and 15 live in what started as a 4 bedroom, 2 bathroom (en-suite & main) house and which has now become a 5 bedroom, 3 bathroom house as a result of a loft extension. We now have 3 showers and 2 baths although it is mainly the showers that are used. The old combi boiler is connected to a sealed system which has 12 radiators and 3 towel rails spread across 11 rooms (including the bathrooms).
The boiler is wall mounted in the garage with lots of space below it. What I would really like to get out of a new "system" would be the ability to have 2 showers simultaneously without losing pressure (something that isn't currently possible), a reduction in gas bills and reliability.
I'm in the process of getting quotes, but I always feel I am directing the conversation towards what I would like rather than being told what is possible. For example, when mentioning I would like 2 shows to run simultaneously I was told that wasn't possible with a combi boiler, but he offered no alternative solution, until I mentioned megaflow, at which pointer he suggested an unvented cyclinder and a system boiler.
I would appreciate some suggestions of the best way of replacing my current boiler with a new "system", whatever that may be.
I've read about vented and unvented pressure systems and it seems that vented gives the same results as an unvented system, but without all the safety issues etc. so what do unvented systems have going for them?
My wife and three boys, aged 9, 13 and 15 live in what started as a 4 bedroom, 2 bathroom (en-suite & main) house and which has now become a 5 bedroom, 3 bathroom house as a result of a loft extension. We now have 3 showers and 2 baths although it is mainly the showers that are used. The old combi boiler is connected to a sealed system which has 12 radiators and 3 towel rails spread across 11 rooms (including the bathrooms).
The boiler is wall mounted in the garage with lots of space below it. What I would really like to get out of a new "system" would be the ability to have 2 showers simultaneously without losing pressure (something that isn't currently possible), a reduction in gas bills and reliability.
I'm in the process of getting quotes, but I always feel I am directing the conversation towards what I would like rather than being told what is possible. For example, when mentioning I would like 2 shows to run simultaneously I was told that wasn't possible with a combi boiler, but he offered no alternative solution, until I mentioned megaflow, at which pointer he suggested an unvented cyclinder and a system boiler.
I would appreciate some suggestions of the best way of replacing my current boiler with a new "system", whatever that may be.
I've read about vented and unvented pressure systems and it seems that vented gives the same results as an unvented system, but without all the safety issues etc. so what do unvented systems have going for them?
