Just what does expansion valve do in an AC system?
If your air conditioner isn't blowing cold air like it used to, you're likely wondering what does expansion valve do and whether this small part is the reason you're currently sweating through your shirt. Most of us don't think twice about the components hidden inside our HVAC units or car dashboards until something goes wrong, but this little valve is actually one of the most important players in the entire cooling cycle. It's essentially the gatekeeper that decides exactly how much cooling power your system can actually deliver at any given moment. ...