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 might also want to upgrade your condenser to a newer, more efficient model. According to CostHelper, condenser replacement costs tend to run around $2,500 installed. Adding a new, higher-efficiency condenser to your central air unit can save you money and help you keep cooler. However, you might need to replace more than the condenser if your air conditioner is an older model. According to the American Council for an Energy-Efficient Economy, the refrigerant controls for new condensers are incompatible with units built before 2006. You might also need to replace your indoor components.