I've got 2 pumps, one manual Pigeon and one (new) Medela mini electric. I actually sterilize my Pigeon parts everytime I get home. I know it's not necessary but I'm not brave enough to not do it .
However at work we don't even have hot water (I guess you don't really need it when it's 35.5°C out there), so everytime I need to clean it I heat some water in the microwave, or bring a thermo with really hot water from home. I was planning on leaving the Medela pump at the office, I'd better brave up.
Is it really necessary to do hot water???? Can I just clean it with cold soapy water?
For how long did you sterilize stuff??