Most service calls run in the range of $75 to $200, which covers basic tune-ups. You may have to spend more money if your air conditioning system requires any further services. Small HVAC repairs, such as replacing breakers, thermostats or fuses, might cost anywhere from $150 to $400. More significant repairs and replacements, such as a refrigerator evaporator coil leak, might cost anywhere from $250 to $1,000.

Emergency AC repair costs an average of $350 a year for most households. There is no standard call fee for HVAC services, and the price is determined by a variety of circumstances. Many professional HVAC repair businesses bill on an hourly basis, while others may bill you based on the job you give them.

Replacement of an air conditioner in a family house might cost anywhere from $4,350 to $12,095. This covers the cost of labor as well as the cost of obtaining a permit, if necessary. This range also includes variable-speed AC systems, as well as a variety of system sizes and levels of sophistication. 

Because you require a license to handle the refrigerant chemicals involved, you should not attempt to install central air conditioning on your own.You should always have a professional install a new AC system to guarantee it's done right.

Heating and air conditioning equipment should be examined, cleaned and serviced at least once a year, regardless of the kind. The optimum case is to have the heating and air conditioning systems tested in the fall and spring, respectively. Oil-fired equipment should be cleaned and maintained at least once a year, at the start of each heating season.

Cleaning the system, checking for any faults or possible problems and tweaking for best efficiency are all part of annual service. Some of the benefits are increased reliability, addressing any issues as soon as possible, reduced energy expenses and 

increased lifespan of the unit.