C.H.
S.,
First of all congrats on your first child! I am a older mom and had both children with some sort of allergies. My daughter was mold and son was cat big time.
There is a lot of confusion with air cleaners and air purification systems. With a Hepa you have to actually suck the air through the filter itself and you have to have one in each room because they do not affect a large area. The best way is read this file on all the pros and cons of the various types of air cleaners.
The live links will not work because the address is too long...so just copy and paste the entire link into your browser for it to open.
http://www.healthyfiles.com/DLITFiles/Air%20Purification/ AirSource/technical%20information/AIRSOURCE%20Versus%20the%20Compet6C11-link.gen.pdf
The 2nd link shows the cost comparison...on the cost comparison list you will find the retail cost...Shaklee works like a Sam's club..and you'd save another $100 bucks with a $20. membership. Filters are only about $60 bucks a year and you can cover 3000 sq feet. Machine will last at least 14 or more years!
http://www.healthyfiles.com/DLITFiles/Air%20Purification/ AirSource/technical%20information/Airsource--Comparison.pdf
You can find it on this website and just plug in AirSource under search. http://www.TryShaklee.com
C.
PS You can actually purchase the machine and you have 60 days to try it out...and if it doesn't work you can return it for a full refund. Since it does not work like a HEPA it works best for the first week to turn you central air fan to on to just blow...to permeate the entire house. It needs to be set upon a central area in the home on a high enough area like book shelf for maximum effectiveness. And it is quite too...unlike a noisy HEPA