Noisy equipment, excessive humidity within the home and a unit older than 10 years are among the top reasons to replace your central air conditioning, according to Energy Star, a U.S. government program promoting energy efficiency.ost central air conditioning units come with two-to five-year warranties. Extended warranties can be purchased for an additional price -- usually for several hundred dollars -- and the longer the warranty, the higher the price.
The following are prognostic factors for advanced and metastatic nonâsmall cell lung cancer: 1  number of metastatic sites People with a single metastatic site have a more favourable prognosis than people who have cancer spread to several different sites.
Stages of non-small cell lung cancer: 1  Stage I non-small cell lung cancer: Cancer may be present in the underlying lung tissues, but the lymph nodes remain unaffected.2  Stage II non-small cell lung cancer: The cancer may have spread to nearby lymph nodes or into the chest wall.ung cancer stages. Making an educated treatment decision begins with the stage, or progression, of the disease. Using the results from your diagnostic tests, your care team at Cancer Treatment Centers of America (CTCA) will develop an appropriate treatment plan for you.