The Yellowpages can offer customer reviews for local air conditioning companies. You can also check out www.local.com for reviews.
One would hire a reputable air conditioner installer by looking at sites such as AngiesList to find air conditioner installers near them with the best ratings.
I do not own a central air conditioner. There are several websites though that offer reviews of central air conditioners. One of these websites is consumersearch.com.
www.consumersearch.com/central-air-conditioning is a good website it gives you user reviews estimated cost along with relevant ebay and amazon postings you can also find information on other items
Central air conditioners are rated by manufacturers according to the Seasonal Energy Efficiency Ratio or SEER. The higher the rating the more energy efficient the unit has been determined to be and the greater your energy savings will be. This rating system is governed and regulated by the US Department of Energy.
Estacion Central - 2013 is rated/received certificates of: Mexico:A
Pittsburgh - 1942 is rated/received certificates of: Finland:S Netherlands:14 (original rating) USA:Approved USA:Passed (National Board of Review)
Adventure Central - 2000 is rated/received certificates of: New Zealand:G
Try www.servicemagic.com. They provide air conditioning services in Texas and are highly rated.
Through different air conditioning websites. Contact your local service providers.
Man v- Food - 2008 Pittsburgh 1-3 is rated/received certificates of: USA:TV-G
AU3 - Autopista Central 2010 is rated/received certificates of: Argentina:Atp
Dance Central - 2010 VG is rated/received certificates of: USA:T