Q. My AC has been set on seventy degrees, for hundred. Presently it is eighty five in the indoors. The thermostat of the A/Cs heat pump is on ‘cold’. The heat pump blows air, but just plain air. The fan is properly functional, and the unit is inside. It is working fine as well. What could be restricting the air to become cold? Is it possible for me to fix this air conditioner troubleshooting up, or I need help?

A. Since both the outside and the inside are working fine, check the big and small copper linings. IF the bigger one is not wet and cold, and the smaller one does not feel warm, you must turn the unit off. Ask and HVAC professional technician to have a look.

Q. What is air handler in air conditioner heater? Is this simply some throw away comment or does this word have some technical significance? Does it have any duct and fan system, or does it only refer to the electric and fan resistance heating devices? Or is it the AC’s fan and evaporator coil that is referred to as ‘air handler’?

A. Air handler is a significant term in air conditioners casement or central air conditioner components, referring to the blower-box. It may also contain an AC coil and its heat pump. When it has the heat pump, an air handler can also be having some electric strip heaters. Many of them even have a slot to support a filter. (You need not bother about the duct system or any kind of a duct work that goes in here).

Q. What is damper? Do I have to put one in while using a basement HVAC?

A. Damper is a metal piece installed within the ductwork for restricting or allowing the air flow, sometimes providing main combustion air flow. Others allow you to select the temperature of a particular area. For gas combustion seek professional help.

Q. Which chemical runs through the furnace top’s coil? I just hit mine and it is now all over the basement. Is it a problem?

A. That is probably the AC coil releasing refrigerant, possibly asphyxiated since refrigerants. Nevertheless, the small amount in your room air conditioner, or window air conditioner or portable ac units or any other air conditioner units cannot do much harm. Switch off any heat of any furnace. Switch on your fan and opening the window. Contact the service centre for the repair job, and pump the system down for removing any moisture from the unit, before recharging.

Q. My thermostat is placed in our living room, having 2 vents, with one standing opposite to the thermostat at a 2-3 fee distance. Must I rather place it at the hallway? Can the lamp location affect its work, by blocking air form directly touching the thermostat?

A. Thermostats are best in the hallway, way form hat sources, window, light or air vent. Remove the lamp. Otherwise the thermostat may not perform well.