Thermwell ACB80H Ac Window Support 80 Lb Steel

Product Description

The THERMWELL ACB80H is a light-duty, steel universal air conditioner window support bracket designed to hold window-mounted AC units weighing up to 80 pounds, covering units rated from 5,000 to 10,000 BTU/h. The bracket installs completely from inside the home, eliminating the need to lean outside during mounting. A built-in precision bubble level ensures the unit is set at the correct drainage angle from the start. All-weather steel construction makes this support suitable for year-round exposure to outdoor conditions.

This bracket is intended for residential window air conditioner installations where a stable, interior-accessible mounting solution is required. It is well suited for single- or double-hung windows in apartments, homes, and light commercial spaces where the installer cannot safely access the exterior. The ACB80H relieves stress on the window sill and frame by transferring the AC unit load to the support structure, reducing the risk of window damage over time.

Key Features

• Supports AC units up to 80 pounds and 5,000 to 10,000 BTU/h capacity
• Installs entirely from inside — no exterior access required
• Precision bubble level ensures correct mounting angle for proper condensate drainage
• Transfers load away from window sill to reduce frame stress
• Rugged all-weather steel construction for long-term outdoor exposure
• 2-year limited warranty

Compatibility

Designed as a universal OEM-style replacement and new-installation bracket compatible with most standard window-mounted residential air conditioners rated from 5,000 to 10,000 BTU/h.

Installation Notes

Installation is performed by a homeowner or HVAC technician working from inside the room. Power down and unplug the air conditioner before positioning or adjusting the support bracket. Follow the manufacturer instructions to confirm the bracket arms are fully extended and locked before placing the AC unit on the support. Verify the bubble level reads correctly to ensure the unit tilts slightly toward the exterior for proper condensate drainage.