If you have a forced air system, rooms (be they closets or a small room - but generally speaking an area with a door) and there is no supply in it, they can get quite cool - even if the bedroom is comfortable.Before poking holes in walls (which is all you really need to do, just drill a 3/4" hole and inspect... visually or by sticking your finger in it... very easy to fill/patch), I'd check to be sure that the area above and below were insulated if they are attic/crawlspace/unheated basement.If it's not insulated, you could remove the drywall and install insulation or you could use loose fill using a series of larger holes - just be aware that horizontal bridging will require two sets of holes for each stud cavity.As for installing cedar... depends on type and thickness, but I prefer having a substrate regardless.

If it was a number you picked out of the air, then just keep picking numbers.If you analyzed it and came up with 150k because the numbers told you to offer that...then offer 150 again...the numbers don't lie.If you offered 150 because the numbers told you your magic number was somewhere in between...then counter somewhere below your magic number...and NEVER go over itAlways remember this.  

Highest form of quake can throw a car 30 feet up the air.

I am currently active duty Air Force (Physician Assistant) and have been doing live-in flips for about the past 10 years or so. 

Use air pressure test.

Is there any other air tight way to pass ownership?

She was in the Air Force for seven years and she has done some free lance work as a business consultant for my store as well as a multi-level marketing company. 

. - never had a central air system before, so it would be a complete installation of units/ductwork/vents. - wanting to use gas heat.    

I bleached the walls and put an air purifier running 24/7.

We have purchased 18 houses over the years, all of them near Air Force bases where we were stationed, and I'm a partner in 10 more that are located in a small Texas town with an AF base.