Whenever an air conditioning system abruptly shuts down—the fan won’t come on, the compressor won’t come on—one of the first things we recommend homeowners check is their electrical panel. A tripped circuit breaker might have caused the air conditioning system to lose power. Resetting the breaker may solve the problem.
Or … the problem may come right back. If this is the case for your air conditioning system, there’s something else wrong, such as electrical trouble in the AC. You may need to have our professionals check on the system and repair it. Let’s look a bit further into this situation.
You may have heard about the tankless water heater as a replacement option for the standard storage tank water heater. A tankless water heater applies heat to the water that passes through its heat exchanger, so it heats up water whenever there’s a demand for it. When a hot water tap comes on, water starts to flow through the heat exchanger, which activates it and turns on the gas jets. The heat only remains on when the water is moving, and shuts off when the demand stops. There’s no need to store the water at any point.
We’ve written before about the signs to watch for that will warn you it’s time to schedule professional 
When your home’s air conditioning system is running during the summer, you will occasionally hear the sound of water dripping coming from the indoor cabinet. This is normal—you are hearing the sound of the water condensation that collects along the evaporator coil dripping down into a pan beneath it. This water (called condensate) is a standard part of how your central air conditioning system removes heat from the air. Once the water collects in the condensate pan, it leaves the house through a drain and line that leads to the outside.
Our summer weather can sometimes arrive abruptly during spring. We’ll switch from cloudy and cool weather straight to the big heat. You want to know that the first time you need your air conditioning system for the year that it will turn on and do its job right.
Two-story homes often encounter problems with their upper floors getting much warmer than the lower floors. Heat rises, so heat tends to gather in the upper levels of a house. Another cause is heat coming through the roof on sunny days. A hot upper floor can happen even in a home with a powerful heating and air conditioning system and well-designed ductwork, and it can occur at any time of the year. However, ineffectual ducts and malfunctioning comfort systems can contribute to the problem. 
When you move into a new home, usually the AC and the furnace were installed at the same time—and usually they’ll need to be replaced at the same time as well. In other cases, either the AC or furnace will run down before the other (air conditioning systems in general don’t last as long as either gas or electric furnaces), and you’ll arrange to have the older unit replaced.