In 2023, John and Peggy Smith purchase and install the following: two exterior doors at a cost of $1,000 each, windows and skylights at a total cost of $2,200, and one central air conditioner at a cost of $5,000. All property installed meets the applicable energy efficiency and other requirements for qualifying for the Energy Efficient Home Improvement Credit. When figuring their income tax return, John and Peggy determine their Energy Efficient Home Improvement Credit is what amount