Mounting a TV above a fireplace is the single most-requested install we get in Broward County, and also the one that goes most wrong when homeowners DIY it. Three numbers decide whether it works: heat tolerance, viewing angle, and mantel depth.
1. Heat — and how to measure it safely
Modern fireplaces (especially the linear gas ones in newer Las Olas townhouses) can throw 200°F+ heat straight up the wall. Most consumer TVs are rated for 95°F operating temp max. We run a 30-minute burn test with the fireplace at full output, then take an infrared reading at the proposed mount height. If we see anything above 90°F, we mount higher or recommend the homeowner install a mantel deflector.
2. Viewing angle — the real reason this matters
Most fireplace mounts end up too high because the homeowner mounted at the height that 'looks centered.' But your eyes are typically 4 feet off the ground when seated. A TV centered 6 feet up means staring up at ~25°, which causes neck strain after 10 minutes. We always use a tilting mount above fireplaces — never fixed — and angle the screen ~15° down.
3. Mantel depth — clearance for the tilt
If the mantel sticks out more than 8 inches, you need the TV to be at least 10 inches above it for the tilt to work. We pre-measure with a tape and a level, every time. On this Las Olas job, the mantel was a generous 12 inches deep, so we mounted the bottom of the 65-inch TV exactly 11 inches above the mantel — perfect angle, no heat issues, no obstructed tilt.
