My husband and I are both seniors living on a very limited income.  With this great little ac/heater combo we can just cool/heat the room we are in instead of the whole house.  Both the a/c and heater work very well and we expect to save some money this winter.  The only thing that I do not like is that the compressor is rather loud when running the a/c.  However, the cost savings outweigh the sounds.  In fact, I don't even notice it anymore.  I highly recommend this product.