HVAC Wall Penetration and Line-Set Cover Kit

Your AC line’s wall penetration is quietly leaking money.

Cold air escaping, rain seeping in, pests getting inside—these invisible losses can add $200+ to your energy costs every year. The Universal HVAC Wall Penetration Seal System seals it all with one pipe and one install.

Universal HVAC Wall Pipe Cover Kit is a professional-grade wall penetration sealing system designed for residential and commercial AC/heat pump line sets. Using elastomeric sealing technology, it completely closes the wall opening around copper lines, drain lines, and control wires—blocking air leaks, moisture, and pests.

💡 Four Core Selling Points

🔒 Powerful Sealing — Stop Every Bit of Wasted Cool Air

With elastomeric flexible seal technology, the wall gasket compression sealing system effectively stops wall air leaks and prevents moisture intrusion that can damage walls. ASTM-tested for professional-grade sealing performance.

• Eliminates cooling/heating loss through wall penetrations

• Prevents rainwater seepage that causes mold and rot

• Reduces HVAC load and saves on energy bills

🐜🐭 Pest & Rodent Defense — Seal the Entry Point

The flexible elastomeric sleeve is wind- and rodent-resistant, closing off the path cockroaches, mice, termites, and other pests use to enter through line-set holes. Customer reviews confirm: “Seals perfectly—completely blocks wind, rain, and insects.”

🔇Vibration & Noise Reduction — Quiet Down Pipe Resonance

Built-in line isolation and support structure reduces pipe vibration and noise transfer, making the AC run quieter while protecting lines from long-term vibration wear.

⚡ Fast Installation — No Pro Tools Required

Pre-assembled kit with rubber gasket, diaphragm bushing, and fiber washer. Average DIY users can install it in under 30 minutes. Works on stucco, brick, and various siding surfaces.

📐 Technical Specifications

🛠 How to Use

Step 1: Press the black rubber accessory tightly onto the plastic cover plate.

Step 2: Align the upper and lower pieces with the card slot and close them together. Apply black foam sealing strips.

Step 3: Fix the upper part and the lower part together using small screws, and finally secure the four corners.

Step 4: Adjust the metal ring screws (large screws) to tighten or loosen and secure the pipe.