The importance of an air conditioner in our homes cannot be overemphasized. It’s one of the most important components of your home climate control systems. It’s also among the most expensive appliances, and therefore, the utmost care must be provided since the idea of buying new AC unit can at best be stressful. That’s why you need to put in measures that can extend your air conditioner’s life for as long as you can. It’s important to note that air conditioner has a life span of about 15 years, but you can stretch this limit with proper use and maintenance. Here are a few things that you can do to get the best from your air conditioning system:
 
1. Schedule Regular Maintenance
How often the appliance is checked for problems is crucial when it comes to its lifespan. The fact that the AC unit is working does not mean that it is okay. It’s during such routine maintenance that you will be able to identify problems that are developing and rectify them before the system breaks down. With every maintenance schedule, the appliance’s efficiency is greatly improved, and it starts operating again as if it was new. That’s how the scheduling of regular maintenance impacts greatly on the overall lifespan of the appliance.
 
2. Change Filters
For the unit to work properly, the condition of the filters must be maintained at their best. These are components that help to keep debris, dust and dirt from entering and damaging the condenser coil. Sometimes, the filters might get clogged, and this will automatically lead to overworking of the unit, and this will definitely lead to overheating and breakdowns. This why it’s checking the filters and replacing, if necessary, is crucial if you want to extend the useful life of your AC unit.
 
3. Fix Airflow Problems
Airflow problems can reduce your AC unit lifespan significantly of they are not checked properly. There are numbers of different things that can cause air flow problems like a leak in the air duct, blocked air registers, air leaks in your home and improper duct designs, amongst other things. Just like the filters, airflow problems can cause over overworking of the unit, and this will cause overheating and breakdown of the unit. Having these problems fixed will significantly improve the lifespan of the unit.
 
4. Keep the Condenser Clear
The condenser is actually the heart of the air condition, and if it fails, the entire system is as good as dead. In case you don’t know, it is the part of the air conditioner that sits outside of the house and does the actual cooling work. It’s easy to forget about it, and as a matter of fact, homeowners often only remember it when the unit fails. One way that you can give it an extended lifespan is by clearing shrubs, grass and bushes away. This way, you’ll prevent debris from getting into the system and also help the unit to run more efficiently.
 
5. Accurate Size
Ensure that the air conditioner is accurately sized to fit your needs. This is a common mistake that many people make while shopping for the AC units. If you buy a too small system, it will never manage to maintain a comfortable temperature in the room. Instead, it will be overworked as it tries to heat and cool the room. By running it continuously, the levels of wear and tear will be too high, and this will reduce the actual lifespan of the unit. If the system is too big for your home, it will reach the desired temperature setting too fast. The turning off and on constantly is likely to result in moisture issues as well as increased wear and tear on the system.
 
6. Give it a rest
This may sound easier than done, particularly in the summer months, but it is an excellent idea to improve your unit’s lifespan. Having the system running all through is not a wise idea- you need to give it a rest. Like any other appliance, running the unit continuously increases the wear on the machine. Take advantage of the cooler days to switch off the machine to allow for the natural cooling of the house. Open windows or hang the drapes to block out the sun. By doing this, you will be able to extend the lifespan of the unit significantly.
 
7. Use Programmable Thermostat
You can have the system automated so that it’s only useful when you are around. With a programmable thermostat, you can set the system to keep cool when you are home but high when there is no one in the house. This simply means that the unit will be running only when you need it and this will extend its lifespan significantly.
 
8. Plant Trees
You can help the air conditioner to stay cool by planting shrubs and small tree to block the sun. This will help to keep direct sun off the AC unit and also reducing its workload. Just don’t plant something so close to the unit so as to cause problems with leaves and debris.
Reference:

Top 10 Things You Can Do to Extend the Life of Your Air Conditioner

https://www.jerrykelly.com/blog/2013/june/6-ways-to-increase-the-lifespan-of-your-air-cond/
http://www.wilmingtonbiz.com/insights/jimmy_williams/5_proven_ways_to_extend_the_life_span_of_an_hvac_system/799
http://www.sheknows.com/home-and-gardening/articles/961613/extend-the-life-of-your-air-conditioning