New house with Combi boiler - hot water is SO much higher than old house with system heating, why?

Scot_39

I tend to agree re over focus on legionella.

But I grew up in a house with cold water tank in loft and vented tank.  And still live in another today.  Probably the highest domestic risk model.

An owner occupier might be able to turn it down.

But thought tennants should now not be and that should arguably be built into the rental agreement according to HSE guidelines for landlords and at least N of border - their need to do or have done regular legionella risk assessments.

From 

https://www.hse.gov.uk/legionnaires/legionella-landlords-responsibilities.htm


"Tenants should be advised of any control measures put in place that should be maintained eg not to adjust the temperature setting of the calorifier,"

FreeBear

Scot_39 said: But I grew up in a house with cold water tank in loft and vented tank.  And still live in another today.  Probably the highest domestic risk model.

If the tank has a lid, and there are no birds roosting in the loft, the risk is virtually zero. I too had a similar setup until last year. Never had a problem with waterborne pathogens (but a single case is not scientific proof).