Even though it started as tag based and written in C++ back in 1995, it was released with a full rewrite in Java back in 2002 (Before Scala was even officially released) and has matured to a modern scripting language featuring Java interop, closures, dynamic typing, and OO patterns.
1 A proper home air duct cleaning costs anywhere from $400-$1,000, depending on the size of the system to be cleaned, the type of services offered, the regional climate and the level of use the ventilation system gets, the type of materials inside the ductwork and the amount of contaminants (dust, mold, etc.).hat should be included: Additional costs: 1  Cleaning should include: cleaning all of registers, inside the ductwork, the interior of the heating/ventilating system, the furnace fan, and the coils for an air conditioner or heat pump, according to Real-Estate-Agents.com.
Well sure enough, I found the problem. It was a cooking circuit breaker in my circuit board cabinet. Apparently, my central air HVAC system was working extra hard to keep the house warm during a brutal cold front for several days. This caused the circuit breaker to overhead and cook. I had an electrician swap it out for a new one and the smell was gone. Total cost $65.00. Before finding where the smell was coming from, I was ready to spend thousands on exterminators, air-duct cleaning and air-conditioning heating company to service my unit.