When you have real dirty air duct in your central heating & air conditioner unit you have to get what is called a deep air duct cleaning.
Getting a deep air duct cleaning is a bit different than getting a usual air duct cleaning, but when you get a deep air duct cleaning you need to pay more than you would for the official kind, however this is because the deep air duct cleaning is a much more complicated process & will take your heating & air conditioning specialist from the local heating & cooling company much longer & much harder work to accomplish.
I had to do a deep air duct cleaning recently because it had been so long since I last had the air duct of my central heating & air conditioner unit cleaned. This was totally my fault for being forgetful. If I had remembered to have the air duct of my central heating & air conditioner unit cleaned correctly I would not have had to hire the heat & A/C company’s most certified & wonderful heating & air conditioning specialist to do the deep air duct wash on my central heating & cooling system unit! This was a fantastic lesson learned to me & from now on I will get my air duct cleaned on a official basis so I never have to pay the extra cost for a deep air duct cleaning again from the local heating & air conditioning company! This is an extra expense I did not by any means want or need to spend.