By Sara Bennett If you are thinking of the ways that you can reduce energy cost in your house, then you should consider dealing with the major HVAC inefficiency in your home. Most of the houses have more than one efficiency issue when it comes to this unit. However, if you deal with the problems, you will get good results on your next bill. Here are some Columbia IL HVAC tips that you can use to cut on expenditure. The system that heats or cools your house does not affect the temperatures only. Since is uses electricity, the monthly bills are also affected by the same thing. To increase its efficiency is to reduce the bills and, some key...