Buying an media air cleaner due to smoking

It is so high-priced that I would need some help on the cost.

My roommate Chad is a large time smoker! He smokes pipes, cigars, & cigarettes, i try to get him to take it outside, although he either forgets or just doesn’t care! The house always reeks of smoke; Not only do the curtains & rugs keep the smell, however it lingers on our clothes. I am not a smoker & I don’t want to smell like 1! What is the worst is that the Heating as well as A/C system sucks up the smoke & transfers it around the home. The smell goes through the HVAC duct & gets in every room in the house. No area is safe, however rather than close off Chad’s HVAC duct & supply him no Heating as well as A/C, I feel I am going to buy an media air cleaner, but an media air cleaner is meant to scrub the air quality of smells & dust. The price range on the little system is sizable, then basically I can cheap out & get an media air cleaner that just sits in Chad’s room. But, I could get the large boy that installs right into the Heating as well as A/C equipment. As the oil furnace & AC system runs, the media air cleaner would work to remove the smoky smell from the air quality… Obviously, this is the better option. It is so high-priced that I would need some help on the cost. I want to ask our roommate to come up with half the bill. He is not bothered by the smoke though. Also, the house is mine & the media air cleaner would be our investment. But, I would not be getting the system if not for him.

Hybrid HVAC system