I recently had a great discount offer given to me by the local heating and air conditioning company. And that was if I got my central HVAC unit tuned up and checked up every 4 months, it would only cost me 50 bucks a pop! This would be under contract of course to where if I do not do the HVAC tune up and check up every 4 months I would be billed anyhow because of the breach of contract. This would not happen though because I really needed my central heating and air conditioning system tuned up and checked up on a semi regular basis anyhow. So I took the deal. And let me tell you it really works out well for me and is worth the 50 bucks every 4 months. That is more than half off what a regular priced HVAC tune up and check up would end up costing without this little deal that they have going on which I took and signed the contract for. My central heating and air conditioning system has never worked better. And, the heat and a/c specialist that usually comes out from the local HVAC company to do the HVAC tune up and check up found a few things wrong before which by catching them early and fixing them as part of the HVAC tune up and check up, saved me hundreds of dollars. So I was forever grateful for the local and very friendly heating and air conditioning specialist that did these HVAC tune ups and check ups!