The dry air quality after heating

My whole family has been feeling rather ill, and each member of the family has gotten a headache at least once this week; all of us sneeze constantly. A few of us have chapped lips, some have bloody noses and a couple of us are experiencing dry skin. The only thing that has changed in our household is the heating system; With the oil furnace on, all of these concerns came about. I guess the main issue is that our oil furnace is dirty. All of us are breathing in inferior air quality. The dirty air is causing the head pains and the sneezing. As far as the dry skin and nasal passages, that is the oil furnace drying out our air quality. A heating unit naturally removes the moisture from the indoor air. With no moisture, our skin is suffering. What I entirely  need to do is pair a humidifier with the furnace. The added moisture would solve our skin concerns. Also, the more moist the air conditions, the better the furnace can do its job; We could lower the temperature and not run the oil furnace as much. I just don’t want to buy and pay for the installation. I know I need to get the heating system professionally cleaned as well, nobody would get sick this way. I don’t have the time, energy or money to hire a heating professional to do it though. I wish our heating unit would not be so needy. I assumed a oil furnace unit should not have to ruin our household.

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