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.
SCLC is more responsive to chemotherapy and radiation... Non-small cell lung cancers (NSCLC) are assigned a stage from I to IV in order of severity. 1  In stage I, the cancer is confined to the lung. 2  In stages II and III, the cancer is confined to the lung and, possibly, the lymph nodes.3  Stage IV cancer has spread outside of the lung to other parts of the body.CLC is more responsive to chemotherapy and radiation... Non-small cell lung cancers (NSCLC) are assigned a stage from I to IV in order of severity. 1  In stage I, the cancer is confined to the lung. 2  In stages II and III, the cancer is confined to the lung and, possibly, the lymph nodes.