Can't get enough heat from system. Volvo S80
 

I'm having trouble getting enough heat from the heat/AC system on a 2005 S80. The blower runs well with no difficulties. The heat gauge reaches mid range with no problem. Even when I turn the choice to maximum range, I still fail to get enough heat.


I've just begun my search on this issue, so it's possible the answer is readily available in the posts that I will find in my search.


Thanks for any response and any direction that anyone may offer.