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www.reference.com/article/common-problems-central-air-conditioning-systems-17c37dc5c2632a81

Some common problems with central air conditioners include faulty wiring, low Freon levels, failure of the outside fan or unit to work, and the coil freezing. Most of these problems can be avoided through preventative maintenance.

www.reference.com/article/can-install-central-air-conditioning-yourself-fbceb5098a2a23a2

Many people use a contractor to install home central air systems, but it is possible to do much of the work yourself. Attempting to install central air systems is only recommended for construction-savvy individuals. Regardless of expertise, make sure to follow local building codes, instructs eHow.co

www.reference.com/world-view/central-idea-feab5fe82d2c0d36

A central idea is the definitive and unifying theme or idea of a story or article. It encompasses all the aspects necessary to create a coherent main idea.

www.reference.com/article/remove-bad-smells-central-air-system-498db38976ba0eb5

To purge a central air system of odors caused by mold or mildew, replace the filter, inspect and clean the top of the air conditioner, clean the condensate drain, and evaluate the results. This procedure takes several days and requires a new filter, a wrench, bleach and a scrub brush.

www.reference.com/article/high-velocity-central-air-conditioning-system-ca079b0e2d0a1b1c

A high-velocity central air-conditioning system is an air-cooling system that operates through small, flexible tubes that are inserted into and wrapped around and above closets, crawlspaces and ceilings. It is typically installed in buildings with no air ducts.

www.reference.com/article/run-fan-constantly-central-heat-air-system-afb545eadf87a4ae

Continuously running the fan on a central heating and air system presents both pros and cons. Whether the fan is set to On, Auto, or Off depends on both financial and personal comfort goals. Leaving the fan on is costly but provides better air circulation.

www.reference.com/article/much-new-central-heating-system-cost-e130b1c8c0f4ecf3

The cost of installing a central heating system depends on different factors, such as the size of the house, the complexity of the installation and the type of system installed. An average cost for either a heat pump or a gas furnace system in 2014 may be around $10,000 to $20,000, depending on the

www.reference.com/article/brand-central-air-conditioning-system-highest-ratings-ced12e468d065ae7

A few brands make central air conditioning models that consistently receive higher ratings than models from competing brands. Some of the top-rated central air conditioning system models are manufactured by Lennox, Maytag and Trane.

www.reference.com/article/solutions-dealing-trapped-air-central-heating-system-376a5d459e3812e1

To fix the problem of trapped air in a central heating system, bleed the radiators and the circulating pump and then top up the water in the heating system. Repeat the bleeding process after a day or two to release any air left in the system.

www.reference.com/article/simple-tips-troubleshoot-central-air-conditioning-system-c48f235869f73a9c

Troubleshooting a central air conditioning system involves checking whether the filter is dirty, especially if it has not been changed in the past month, checking whether the unit is receiving power and ensuring that the thermostat setting is lower than the actual room temperature. These actions can