I have l acquired the difficult way that smokes stays in the Heating plus A/C units of a condo for a actually long time, then my spouse plus I do not smoke, plus we have never smoked. It is pretty crucial to us not to smoke. My spouse can’t even sit the smell of cigarettes on someone. Therefore, when we are trying to rent a house, we want to make sure that we cannot smell cigarette smoke. When we were checking out the home we live in now, we couldn’t smell any smoke. The landlord told us that smoking was banned in the apartment. However, once we signed the lease, we figured out that the previous occupants smoked. The two of us discovered this by using the Heating plus A/C units. Whenever we used the oil furnace or central cooling system, we could smell smoke coming through the vents. At first, we thought that the neighbors were smoking plus that it was somehow coming through our Heating plus A/C unit. However, when we talked to the landlord, we found out that the Heating plus A/C equipment had been in the condo for a long time, plus smoking wasn’t typically against the rules. Apparently, the smell of cigarette smoke stays in an Heating plus A/C equipment for a long time, plus it is difficult to get the smell out. The two of us didn’t smell the smoke at first because the landlord turned the Heating plus A/C units off while we were inspecting the house. The two of us have tried everything to get the smell of smoke out of the Heating plus A/C units, but nothing has worked so far. Now, the thermostat for our Heating plus A/C units is adjusted to ensure that they aren’t used often so that our spouse doesn’t smell the smoke.