1867 - 1919. In 1917 Madam C.J. Walker was one of the wealthiest women in the United States. She developed a line of cosmetics and hair products especially for African-American women. She trained many women to become sales representatives. She once told a group of women,
Adding central air usually costs about $4,000 for 2,000 square foot home, if the home already has duct work in place. That price includes installation. If the home does not have ducts, the total cost could rise to as much as $8,000 to $10,000.Even though the price of central air is similar to a heat pump, donât forget that youâll also have to buy and maintain a furnace for heat.hat price includes installation. If the home does not have ducts, the total cost could rise to as much as $8,000 to $10,000. Even though the price of central air is similar to a heat pump, donât forget that youâll also have to buy and maintain a furnace for heat.
1 Lower prices are do-it-yourself installation, particularly for window units, which are relatively easy to install. 2  It typically costs about $2,000-$8,000 to install a whole-house electric heat pump system in an average home (three-ton capacity) with existing usable ductwork. Expect to pay $500-$2,000 to install a self-contained through-the-wall or window unit air-source heat pump in a single room (no ductwork is required).