Jerry Stiller, the actor who played "Frank Costanza" on "Seinfeld," is now appearing in TV commercials for Mitsubishi HVAC products.

Actor and comedian Jerry Stiller has been hired to convince Americans of the benefits of Mitsubishi ductless mini-split HVAC systems.

The commercials feature the former “Seinfeld” and “King of Queens” actor arguing with himself whether to lower the temperature on his air conditioner to be more comfortable or raise it to lower utility bills.

Part of Mitsubishi Electric’s “split personality” campaign, only the company’s mini-splits satisfy both of Stiller’s needs.

“Jerry Stiller is one of those comedians who resonates with people of all ages, and you can’t help but laugh when remembering him passionately arguing with others in his sitcoms and movies,” said Joe Mastroianni, chief marketing officer for Mitsubishi Electric Cooling & Heating. “Since we first rolled out this campaign in 2011, our goal has been to show homeowners they don’t need to compromise on comfort - a message that makes it easier for contractors to communicate the advantages of ductless systems to the consumer.”

The commercial aired on traditional broadcast TV during several of  last month’s season finales, and will air on cable TV stations throughout the summer.