The most common mounting mistake is putting the TV too high. Here are the actual numbers, and when it is worth breaking the rule.
Part of our complete guide: How to Mount a TV on Any Wall.
Almost every TV we are called to re-mount was mounted too high the first time. It is the single most common mistake in home installation, and it happens because people mount to the space that looks available on the wall rather than to where their eyes actually are when they sit down.
Here is how to get it right, with real numbers rather than vague advice.
The target is simple. When you are sitting in your normal seat, in your normal posture, your eyes should land on the vertical center of the screen — not the bottom edge, not the top.
For most adults on a standard sofa, seated eye level is roughly 40 to 44 inches off the floor. On a low modern sectional it can be 36 inches or less. In a recliner reclined back, your sightline shifts up, which changes the answer.
So before measuring anything on the wall: sit down where you actually watch, have someone measure from the floor to your eyes, and write that number down. Everything else follows from it.
Once you have your seated eye height, the mounting height for the bottom of the TV is:
Eye height − (screen height ÷ 2)
Screen height, not screen diagonal. A 65-inch TV in a 16:9 aspect ratio is about 32 inches tall, so half of that is 16 inches. If your seated eye level is 42 inches, the bottom of that TV wants to sit around 26 inches off the floor.
People are often surprised by how low that is. It is correct. Walk into a well-designed theater room and the screen center is right at seated eye level — it looks low when the room is empty and perfect the moment you sit down.
Rough screen heights for common sizes: a 55-inch is about 27 inches tall, a 65-inch about 32, a 75-inch about 37, an 85-inch about 42.
Height is half the problem. Distance is the other half, and it determines what size you should have bought in the first place.
For 4K content, a comfortable range is roughly 1 to 1.5 times the screen diagonal in distance. A 65-inch TV works well from about 5.5 to 8 feet. A 75-inch wants around 6.5 to 9 feet. Sitting closer than that is not harmful, but you start seeing the panel structure and losing the sense of a single image.
Sit much farther than that and you lose the resolution advantage you paid for — at 12 feet from a 55-inch screen, 4K and 1080p look nearly identical. If your room is long, the fix is a bigger screen, not a sharper one. We go into this in more depth in our TV size guide.
Optometrists generally put the comfortable range for sustained upward gaze at about 15 degrees. Past that, you are holding your head back, and after a two-hour movie you feel it.
Fifteen degrees does not sound like much, and it is not. At 8 feet from the wall, 15 degrees of upward angle is only about 25 inches above your eye line. That is the ceiling — literally the limit — for how far above eye level the center of the screen should sit.
Which brings us to the most-requested installation in Lexington and the one that most often violates every number above.
A typical mantel sits 48 to 54 inches off the floor. Put a 65-inch TV above it and the screen center lands somewhere around 70 inches — nearly 30 inches above seated eye level. That is well past the comfortable angle.
We are not going to tell you never to do it. Sometimes the fireplace is genuinely the only wall, and sometimes the room is used for background viewing rather than movie nights, in which case the angle matters much less. But it is a real trade-off and you should make it knowingly.
If you do mount above a fireplace, three things help a great deal:
Use a tilting or pull-down mount. A tilt of 10 to 15 degrees aims the screen at your seating instead of over your head, and it substantially reduces glare from windows and lamps. A pull-down mount does more, bringing the screen down to eye level for real viewing and returning it above the mantel when you are done.
Mount as low as the mantel allows. Every inch counts. If clearance permits, get the bottom edge close to the mantel.
Check the heat. A working wood-burning fireplace can push far more heat up the face of the chimney than a TV is rated for. Our fireplace mounting guide covers this in detail.
Everything above assumes you are sitting upright. In a bedroom you are usually reclined against a headboard, and your sightline is angled upward already — so a bedroom TV genuinely does belong higher, typically with the bottom edge somewhere around 42 to 48 inches. A downward tilt matters more here than anywhere else.
Tape a paper rectangle the size of your screen to the wall at the height you calculated. Sit down. Live with it for an evening. It takes five minutes and it has saved a lot of people from a second set of holes.
If you would rather someone else do the measuring, that is most of what we do. We mount TVs across Lexington and Central Kentucky and we will set the height to your seating, not to the middle of the wall. Call or text (859) 414-6646.