The warmth was never the problem. Where it ends up is.
Here's what's happening, and it has nothing to do with your heating being too weak.
Heat rises. It's the one thing about warmth that never changes. Every bit of warm air your heating produces climbs straight up — and collects at the ceiling, where nobody sits.
Down at floor level, where your feet and legs actually are, the warm air never reaches. So you sit there with the heating running, the top half of the room perfectly comfortable, and your feet cold on the floor. Turning the dial up just sends more warm air to the ceiling. You could run it all day and your feet would stay exactly as cold.
That's the altitude problem. And once you see it, you can't unsee it — the warmth is real, it's just all in the wrong place.
Which is why the fix was never a bigger heater. It's warmth delivered at floor level, aimed straight at your feet and legs, instead of filling a room from the top down.
That's exactly what WhisperHeat does. Three soft felt walls sit around your feet under the desk, open at the front and top, giving off a gentle radiant warmth that surrounds your feet and lower legs from three sides. No fan, no noise, nothing blowing about. It warms through in a few minutes — and when you're done for the day, it folds flat and tucks away, with no bulky heater left sitting under your desk.