House attic heating / cooling system installations should include a protective drip pan underneath (plastic or metal tray positioned underneath the evaporator coil cabinet / compartment), to collect condensate water. Evaporator coil will not be visible to you, because it’s hidden inside the metal duct or its own compartment, but it has a drip pan underneath. This is the main drip pan that catches... 

Poorly designed or older forced air heating, and air-conditioning systems often have only a single air return compartment. With a single story home, such furnace air return installation is still popular, simply because it saves money and material. However, single furnace air return configuration might not be as efficient as the one with individual air return ports installed in every room.... 

We notoriously forget to replace air filters in our forced air heating / air conditioning systems… Air flow starts deteriorating through the house, system seams to be operating, but it takes significantly longer to achieve desired temperature … The solution might be simple – clogged air filter, or missing air filter, and in that second case, you might have a contaminated evaporator... 

// < ![CDATA[ // < ![CDATA[ google_ad_client = "pub-0360944017767954"; /* 300x250AC icing */ google_ad_slot = "4139900283"; google_ad_width = 300; google_ad_height = 250; // ]]> One of the problems with home forced air air conditioning systems is icing, which you my notice during its operation on: exterior condensing unit (inside the enclosure), refrigerate lines, or evaporator coil (AC... 

Refrigerant lines insulation is partially responsible for the efficiency of your air conditioning system operation. Two different diameter copper pipes (one approximately 1/4″, second 3/4″ – diameter depends on your system size), run between the air conditioning system condensing unit (house exterior), and the AC coil (“A” coil – named after its shape) installed... 

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House AC condensers require their own disconnect switch.  AC disconnect must be located in sight and not directly behind the condenser so it’s easily accessible. Depending on the manufacturer, enclosures have a disconnect handle located on the exterior or behind the small cover. Accessing of some older air conditioning disconnect switches with a hidden handle might be difficult, they... 

// < ![CDATA[ // < ![CDATA[ google_ad_client = "pub-0360944017767954"; /* 250x250, attic power vent top2 */ google_ad_slot = "1862324899"; google_ad_width = 250; google_ad_height = 250; // ]]> Attic power vent fan blades are extremely sharp! When doing any type of maintenance work around it, make sure that power supply to the motor has been turned off! Most of those vents are controlled...