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Can you mount a 70” TV on a mount currently holding a 55?

by Shassi Kumaran 17 May 2024
Can you mount a 70” TV on a mount currently holding a 55?

When it comes to upgrading your home entertainment system, one of the most common questions is whether you can mount a larger TV, like a 70”, on a wall mount currently holding a smaller TV, such as a 55”.

The short answer is: it depends. This comprehensive guide will delve into the specifics, helping you understand the factors involved and providing you with the knowledge needed to make an informed decision.

Understanding TV Mount Specifications

1. Weight Capacity

One of the most critical factors in determining whether your current mount can handle a larger TV is its weight capacity. TV mounts are designed to support a specific weight range. The weight of a 55” TV can vary, but it generally ranges between 30 to 50 pounds, depending on the model and make. On the other hand, a 70” TV can weigh between 55 to 75 pounds or more.

  • Check the Specifications: Look at the manufacturer’s specifications for your wall mount. It should list the maximum weight capacity. If the weight of your new 70” TV exceeds this capacity, it is unsafe to use the existing mount.
  • Safety Margin: Even if the 70” TV falls within the weight limit, it’s advisable to allow a safety margin to prevent any potential strain or failure over time.

2. VESA Compatibility

The VESA (Video Electronics Standards Association) pattern refers to the standardized mounting hole pattern on the back of your TV and the corresponding pattern on the mount. It’s crucial to ensure that your current mount’s VESA pattern matches that of your new TV.

  • Measure the VESA Pattern: Measure the horizontal and vertical distances between the mounting holes on the back of both your current and new TVs. Common VESA patterns for a 55” TV might be 200x200mm, while for a 70” TV, it could be 400x400mm or even larger.
  • Adjustable Mounts: Some mounts have adjustable arms or plates that can accommodate various VESA patterns. If your mount is adjustable and supports the VESA pattern of your new TV, you’re in luck.

Evaluating the Mount’s Design and Construction

1. Type of Mount

TV mounts come in different types, including fixed, tilting, and full-motion (articulating) mounts. The type of mount you have can influence its ability to support a larger TV.

  • Fixed Mounts: These mounts hold the TV close to the wall and are typically very robust, often capable of supporting larger TVs as long as the weight limit is not exceeded.
  • Tilting Mounts: These allow you to tilt the TV vertically and usually have a slightly lower weight capacity than fixed mounts but can still handle larger TVs if within the specified limit.
  • Full-Motion Mounts: These provide the most flexibility, allowing you to tilt, swivel, and extend the TV away from the wall. They must be carefully checked for weight capacity and stability when considering a larger TV.

2. Mounting Hardware

The quality and size of the mounting hardware (bolts, screws, anchors) are essential for safely supporting a larger TV. Ensure that the hardware used to attach the mount to the wall can handle the increased weight.

  • Upgrade if Necessary: If the existing hardware appears inadequate, consider upgrading to stronger bolts or anchors designed for heavier loads.

The Wall Structure

1. Studs and Drywall

The structure of the wall where the mount is installed plays a significant role in the mount’s ability to support a larger TV.

  • Studs: Ideally, your TV mount should be attached to wooden or metal studs within the wall. Studs provide the necessary support to hold significant weight.
  • Drywall Anchors: If the mount is attached only to drywall, it may not support a larger TV unless high-quality drywall anchors designed for heavy loads are used. However, studs are always preferable for larger TVs.

2. Wall Material

The type of wall material also matters. Concrete, brick, or stone walls provide more support compared to standard drywall.

Installation Best Practices

1. Level and Secure Installation

Ensuring the mount is level and securely fastened is crucial. Even a slight tilt can place uneven stress on the mount, potentially leading to failure.

  • Use a Level: Always use a level during installation to ensure the mount is perfectly horizontal.
  • Tighten Bolts: Ensure all bolts and screws are tightened securely but avoid overtightening, which can strip the threads.

2. Reinforcement

In some cases, reinforcing the mount with additional support brackets or using a mounting plate that spans multiple studs can provide extra security.

Practical Examples and Scenarios

Scenario 1: Upgrading from a 55” to a 70” TV with a Fixed Mount

  • Weight Capacity: The fixed mount is rated for up to 100 pounds.
  • VESA Pattern: The mount supports VESA patterns up to 600x400mm, and the new 70” TV has a 400x400mm pattern.
  • Wall Structure: The mount is attached to two wooden studs.

Conclusion: This setup should safely support the 70” TV, as both the weight capacity and VESA pattern are within limits, and the wall structure is robust.

Scenario 2: Upgrading from a 55” to a 70” TV with a Full-Motion Mount

  • Weight Capacity: The full-motion mount is rated for up to 75 pounds.
  • VESA Pattern: The mount supports VESA patterns up to 400x400mm, and the new 70” TV has a 600x400mm pattern.
  • Wall Structure: The mount is attached to drywall with standard anchors.


This setup is not recommended. The VESA pattern is incompatible, the weight is at the upper limit, and the drywall anchors may not provide adequate support. Upgrading to a mount designed for heavier loads and using stud-mounted hardware would be necessary.

Conclusion: Making the Decision

Upgrading from a 55” to a 70” TV involves several considerations. Here’s a summary of the key points:

  • Check Weight Capacity: Ensure your current mount can handle the weight of the new TV.
  • Verify VESA Compatibility: Confirm that the mount supports the VESA pattern of the new TV.
  • Assess Wall Structure: Ensure the mount is securely attached to studs or reinforced drywall anchors.
  • Consider the Mount Type: Fixed mounts are generally more robust, while full-motion mounts require careful evaluation.
  • Upgrade Hardware if Necessary: Use high-quality mounting hardware suitable for heavier loads.

If your current mount meets these criteria, you can confidently mount your 70” TV. However, if there are any doubts about its capacity or compatibility, investing in a new mount designed for larger TVs is a safer and more reliable option. Always prioritize safety and stability to protect your investment and ensure a secure installation.

By following these guidelines, you can enjoy your new, larger TV with peace of mind, knowing it is securely and safely mounted for an optimal viewing experience.

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