"heartfelt affection" is a correct and usable phrase in written English.
You can use it when expressing deep and genuine emotion, such as love or admiration for someone. For example, "She showed me a great deal of heartfelt affection when I was feeling down."
But even the most heartfelt affection can wane with overexposure.
We still do not doubt that Sir Philip has heartfelt affection for BHS.
But I am, probably even now, swayed over to Tintin by my heartfelt affection for Captain Haddock.
"I have no heartfelt affection for the Gansevoort Destructor," said Regina Kellerman, author of "The Architecture of the Greenwich Village Waterfront New York University Pressss, 1989).
With her future undecided, the Lady Vols embarked on a kind of extended farewell tour, greeted with heartfelt affection for Summitt and appreciation for her role as a trailblazer and adviser.
Pat Summitt sounded mighty relieved and even grateful for the opportunity to express heartfelt affection for the woman who will be her coaching opposite in Tuesday night's national title game instead of grudging respect for the man whose Philadelphia-sharpened needle is typically lodged in her hip.
We offer heartfelt condolences and affection to his wife, Shelby; daughter, Leslie; son, Mitchell; nine grandchildren; and other members of his family.
It is a heartfelt symbol of gratitude and affection.
Such sudden bursts of feeling transformed the solo into a heartfelt expression of grief and affection.
Maybe, but the outpouring of affection for Walker from fans seems heartfelt enough.
Here was a heartfelt declaration of friendship, a cleareyed conveyance of affection and gratitude.
