How much would a portable breathalyzer cost?
Portable breathalyzers can cost as little as $10, but have a very little accuracy. One can purchase them from online retailers like eBay, Amazon or Craigslist.
There are a number of reputable vendors who sell large space portable air conditioner. It really depends on what style you would like and how much you are willing to spend. The main associated cost is obviously electric cost. The larger the unite the higher your bill will be. http://www.sylvane.com/medium-portable-conditioners