Air conditioning systems tend to need the most repairs during the last few years of their service lives. This increase in repairs is a warning an air conditioner is almost ready for a replacement. But there are some repairs that can occur when an air conditioner is still less than ten years old—and there’s one that can occur in an air conditioner that has only been in service for more than five years. In fact, it’s one of the more common AC malfunctions, and it’s a serious one.
What is it? Pinhole leaks in the refrigerant lines. And the repair to fix that is to have the lines sealed.
“Wait, my air conditioner can overheat?” You might not immediately think of the air conditioner as an appliance that might overheat, but this is a danger for any mechanical device that uses motors. When your AC overheats, it will cause its circuit breaker to trip, the same as other electrical appliances in your house that are connected to the electrical system.
When the heat and humidity of late summer start their relentless assault on your home and your family’s comfort, you’ll be glad you have a powerful central air conditioning system to man the battlements and keep the invading heat hordes from storming the walls.
We’ve talked before about the warning signs you need to schedule 
Your refrigerant-based air conditioning system doesn’t use water to cool down the air (that’s what swamp coolers do). But the process of evaporating cold refrigerant in the indoor coils of the air conditioner creates water moisture. So when you hear the sound of water dripping inside your AC, that’s part of the normal process of cooling your home. The air conditioner is getting rid of the moisture that built up.
When you need a central air conditioning system in your house, what’s the best way to have it done right?
Air conditioners runs using motors and fans, so they can never run silently. However, the construction of standard split system air conditioners removes a great deal of the noise from the house by placing the compressor and exhaust fan outside. Inside the house, most of the sound will come from the indoor blower fan, water dripping from the evaporator coil, and the movement of air through the ventilation ducts.
Thermostats are among the most advanced parts of HVAC systems. Even the simple ones have such an important part to play that no homeowner can afford to overlook the thermostat—especially since thermostat troubles are among the most common for creating comfort issues in a home.
Unfortunately, the need for 
There is plenty that a professional