When you have pets around your house, the one thing that you need to always make sure you do is to have the ductwork of your central heating and air conditioning system cleaned on a regular basis.
I would say every other month.
That is what I do to ensure that my central heating and air conditioning system is running smoothly with no overworkings going on from clogged ductwork. Because when you have any kind of pets the ductwork of your central heating and air conditioning system unit will get clogged up with the pet hair. Because when it floats and sometimes flies through the air you do not even notice, but what it does is end up getting up into the air vents of your central heating and air conditioning system unit. And then from the air vents of your central heating and air conditioning unit it goes from there right up into the ductwork of your central heating and air conditioning system. And from there on out it could mean trouble for all if you do not have your ductwork cleaned every other month like I do. It could end up clogging your central heating and air conditioning system and then what would happen from there is your HVAC unit will work overtime and end up breaking down from either a blown out motor or fan. And you do not want that to happen now do you? I know I would not! So this again is why I have the ductwork to my central heating and air conditioning system unit cleaned out often!