Established by your lender, an escrow account is a place to set aside a portion of your monthly mortgage payment to cover annual charges for homeowner's insurance, mortgage insurance (if applicable), and property taxes. Escrow accounts are a good idea because they assure money will always be available for these payments. If you use an escrow account to pay property taxes or homeowner's insurance, make sure you are not penalized for late payments since it is the lender's responsibility to make those payments.
Air conditioners are rated by the number of British Thermal Units (Btu) of heat they can remove per hour. Another common rating term for air conditioning size is the “ton,” which is 12,000 Btu per hour.