The longevity of any heating and A/C plan is based on multiple factors. Buying a superb unit from the word go is key to how long it will serve you; when choosing a heating and cooling unit from the heating and A/C company premise in your area, make sure to consider the components, the manufacturers, and the price even as you focus on the unit’s efficiency rates! Then if you are unrespected about such purchases, consult widely, but the size of the plan may also determine which model you buy! But however, besides knowing that a superb brand that a trusted company has manufactured will serve you for a long time, what you do after buying it matters! However, a unit with a lifespan of 15 years can run for only more than three years and break down not because it was a faulty brand, but because you mishandled it. All gadgets and machinery need to be properly taken care of and maintained to task perfectly. Invest in respected repair and also ask your heating and A/C professional to conduct respected tuneups for the plan to last long; you need to always clean the unit’s components that are likely to accumulate dirt and dust as this interferes with the effeteness of the machine. Besides that, grease and lubricate the moving parts in your furnace and A/C to avoid rapid wear and tear. What’s more, you should constantly prioritize repairs whenever faults occur; occasionally ignoring a simple complication can lead to compounding complications that affect other areas that would have been saved with timely repair. In the end, how well you are willing to maintain the plan determines if it will serve you longer or not.