If expressed, this gene codes for white, or no color, and is dominant over the alleles that code for a certain color (i.e. orange or black), making the white spots on calico cats. If that is the case, those several genes will be expressed in a blotchy coat of the tortoiseshell or calico kind.
Most homeowners report spending between $3,675 and $7,155 to have air conditioning installed. This price is more typical of a central A/C unit installation rather than a window air conditioner addition which typically averages about $300. Your total cost for the job will depend on the type of system you choose.
You should hire a contractor to install an AC unit, such as central air. Central air units range in price from $3,500 to $4,000 for an average-sized home of around 2,000 square feet. So, it is important to remember that this cost is in addition to the initial cost of a forced-air system.