Everything is working fine but I'm curious why my hot water changes temperature. Sometimes it's too hot to use full on and other times it's about medium hot full on.
- Standard 40 (?) gallon electric model
- Located in the garage
- It's about 15 years old
- Nobody here but me and I never change the thermostat on it (if there is one; I've never looked).
- No service/maintenance people who would have changed it.
- The sprinklers aren't on and nobody else uses water while I'm using it.
- It's unrelated to whether or not the washer is running.
- The temperature is too hot about 30% of the time and can vary during the same day.
- It's not any specific time of day that I can pinpoint.
Is this perhaps an indication that it's getting old and can't hold a steady temperature, or is it normal to vary?