The customer wanted the TV above the fireplace. Seventy-five inches, new construction, nice house out past 575 toward Hickory Flat. The quote from the big-box install crew was $199. It covered the mount and the labor to hang it. That was it.
Three weeks later, Taylor got the call. The TV was up. The power cord ran down the wall and across the baseboard to an outlet six feet away. The HDMI cable did the same. The picture froze every few minutes because the Eero that used to sit on the media console was now stuffed into a cabinet with the doors closed. Nobody had told the homeowner any of that was going to happen.
Here is what hanging a large TV above a fireplace actually involves.
The Wall Is Not Ready
Fireplace walls are often framed with studs on 16-inch centers, same as everywhere else, but the blocking between those studs is inconsistent. A 75-inch mount with a full-motion arm puts real torque on the fasteners when the TV is extended and angled. If the mount spans only two studs without horizontal blocking, that’s a problem waiting for a bad day.
The fix is adding blocking: cut an opening, sister in a horizontal 2x6 or 2x8 between the studs at mount height, patch the drywall, texture to match, paint. It adds time. It adds cost. It is not optional if you want the mount to stay put for ten years.
On the Hickory Flat job, the wall had one solid stud and one that had been notched for an old cable run. The mount would have been hanging off one stud and drywall anchors. That’s not a TV mount; that’s a liability.
Power Belongs Inside the Wall
A surface-mounted power cord running down a finished wall is an NEC violation in a finished living space. The right answer is an in-wall power relocation kit (Sanus and DataComm both make listed kits that are legal for this application) or, better, a new circuit dropped from the panel if the load warrants it.
For most residential installs, the listed in-wall kit works: a recessed outlet box at TV height, a pass-through to a matching outlet at floor level, and the existing outlet wired to feed it. No exposed cord. No extension cable. Done to code.
This is not an electrician-only job in Georgia for this specific application, but it does require someone who knows what a listed kit means and why a standard extension cord inside a wall is not a substitute.
Low Voltage: HDMI and Ethernet Are Not the Same Problem
Most streamers and smart TVs perform better on a wired Ethernet connection than on Wi-Fi, especially when the Wi-Fi situation is already complicated (more on that in a moment). Running a single Cat6 drop from the nearest network closet or switch to a recessed low-voltage bracket behind the TV takes maybe 45 minutes if the path is clean. It is worth every minute.
HDMI is a separate question. If the source (Apple TV, Roku, game console) is going to live in a cabinet below or to the side of the TV, a wall-fished HDMI run keeps the install clean. HDMI 2.1 cables are finicky over long pulls; anything past 15 feet usually wants an active cable or a fiber HDMI. Name the run length before you buy the cable.
On this job: one Cat6 to the TV, one HDMI from the TV down to the component shelf inside the built-in. Both fished through the same low-voltage path as the power kit. One opening, one patch.
The Wi-Fi Problem Nobody Mentions
Access points have coverage patterns. A UniFi U6 Lite sitting on a media console, aimed at the room, covers the room. Move it into a closed cabinet or push it behind a 75-inch TV mounted flush to a masonry fireplace wall, and the pattern changes. Masonry is not friendly to 5 GHz.
The Eero in the cabinet was the whole story on this job. The homeowner thought the TV was buffering because of the TV. It was buffering because the access point was in a wood box with the doors closed.
The fix depends on the network. If the customer already has a decent mesh or a wired AP elsewhere in the room, the cabinet AP can come out entirely. If the fireplace wall is the only coverage for that zone, the AP needs a home outside the cabinet, ideally ceiling-mounted or on a shelf with line of sight to the room. A single Ethernet drop to a ceiling mount takes the same tools already on the truck.
This is not a networking upsell. It is the reason the TV works after the install instead of three weeks later when someone calls back frustrated.
What One Visit Looks Like
Blocking, power relocation, low-voltage run, access point check. On a straightforward job with good attic or basement access, that’s a full day. On a slab house with a finished ceiling and a stone fireplace surround, it’s longer. Either way, it’s one visit with one person who can see how the decisions connect.
The $199 quote isn’t wrong, exactly. It’s just priced for a different job than the one in the room.