On January 1 of 2011 several key points of this credit were altered from their 2010 structure. Most significantly, the limit was reduced from $1,500 to $500. The limit is on the total amount of credits a homeowner may claim from 2006 to 2011. If a homeowner installs a high efficiency ductless air conditioner or heat pump, tankless water heater or wallhung boiler, and has already claimed $500 or more in credit through this allowance, they will be unable to claim new credits for improvements made during 2011.
For more information visit http://www.dsireusa.org/incentives/incentive.cfm?Incentive_Code=US43F.
