Do you have a name brand HVAC system in your house or a no name brand? I like to stick with the big name brands as they seem to be the most reliable and offer the best service for the most part.
I know they can cost a bit more but they usually last longer and are more efficient, so you end up saving money on the back end over time. I have an electric heating system now but am thinking about changing to a gas heating system when it comes time to buy a new HVAC system. I think the gas systems are even more efficient than the electric one I have and cost about the same. I need to check online about this because I am not sure but someone told me that gas is the way to go. I could also look into solar systems because they could be the cheapest of all. I know they cost more to install but I think they cut your cooling and heating costs down to almost nothing. Again, I need to research them to see what they are capable of doing and to see if they are better than the electric HVAC systems which most people seem to have. I think I have a few more years till I have to worry about this as my system is only about ten years old and they told me that they usually last about 13 or so years. I have a few more years to save for that new HVAC system. I can’t wait though!