Best solution for a failed expansion vessel?

[Neil Sutherland]

I have a Vaillant Turbomax Plus boiler, fitted in 2005. Recently it's locked out several times due to low pressure, which prompted me to check the expansion vessel. When I pressed the Schrader valve I found that water, rather than air, was released. That suggests to me a failure of the diaphragm? I read somewhere that it's often easier to have an external expansion vessel installed than to replace the original - does that make sense to the experts?

 

[EvilDrPorkChop]

Yeah if there’s space I’d fit an external one, easy enough to do rather than remove the boiler off the wall.

 

[centralheatking]

I have a Vaillant Turbomax Plus boiler, fitted in 2005. Recently it's locked out several times due to low pressure, which prompted me to check the expansion vessel. When I pressed the Schrader valve I found that water, rather than air, was released. That suggests to me a failure of the diaphragm? I read somewhere that it's often easier to have an external expansion vessel installed than to replace the original - does that make sense to the experts?

External expansion vessel certainly, way cheaper to buy simple to install. Make sure you get the right capacity vessel. Look up BES on line to see how cheap they are. Centralheatking

 

[Chalked]

I would be replacing like for like. It’s a 5 min job on a vaillant.

 

[EvilDrPorkChop]

I would be replacing like for like. It’s a 5 min job on a vaillant.

It’s a turbomax, where the expansion is located in the rear of the boiler. They only changed them to the front on the EcoTec range.

 

[Gasmk1]

its also 15 years old sureley time for thinking about replacement

 

[EvilDrPorkChop]

its also 15 years old sureley time for thinking about replacement

TBH the TurboMax was a cracking boiler and if it’s in working order other than the expansion I’d be keeping it going.

 

[centralheatking]

External expansion vessel certainly, way cheaper to buy simple to install. Make sure you get the right capacity vessel. Look up BES on line to see how cheap they are. Centralheatking

From £34.00 at BES you may need a bigger one you need to check Chking

 

[Gasmk1]

TBH the TurboMax was a cracking boiler and if it’s in working order other than the expansion I’d be keeping it going.

it was a cracking boiler thats my point was Its only going to get older not better

 

[Stu-B]

I would be replacing like for like. It’s a 5 min job on a vaillant.

now that’s some bold statement

 

[Chalked]

I need to read more detail!