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WE GOT THE BIG STUFF!
3/4" & 1" WALL FLEXI-PULL INSULATION IN STOCK

Prevent kinks, avoid bending complications, and gain freedom when it comes to routing runs.

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AD ENGINEERING - SUPERIOR QUALITY MEETS SMART SAVINGS

Factory Direct HVAC Solutions

Revolutionizing the Lineset and Mini Split Market with lower pricing, better availability and top-notch customer service.

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Featured Products

Why Choose AD Engineering

Your Partner in Lineset Solutions

Ad Engineering has got everything you need for your heating, ventilation, and air conditioning (HVAC) projects. Our online store is a treasure trove of everything HVAC, including custom options that are tailor-made just for your home or business. Plus, we offer factory direct HVAC supplies, which means you get top-notch quality without breaking the bank.

 

Whether you're looking to make your living space cozier or your business's air fresher and cleaner, we've got a variety of products like linesets, minisplits, and more. And the best part? Our friendly team is always ready to assist you in choosing the right products from our online selection, ensuring they fit your specific needs and last long.

Quick Lead Times​

We are dedicated to maintaining stock on all common sizes. Because we own the factory, special orders or non-stock items can be quickly scheduled, produced and shipped.​

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High Quality​

Specially engineered tubing and processing equipment. Tube is annealed to exact specifications and work hardening is minimized in the manufacturing process to reduce field kinks and leaks.​

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Cost Effective

Up front and clear pricing. We base our prices on material costs and never price gouge. We also offer special pricing on bulk and recurring orders.​

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Trusted by Industry Leaders

“I have placed several orders with AD Engineering and had highly positive interactions each time. They provide an exceptional product and customer service to match. All orders placed have had quick turnaround time and always get delivered on or before the estimated delivery date. I have received excellent service each time I’ve reached out for a quote, typically receiving a response within a couple of hours. The price point of their product is highly competitive and, in most cases, better than others in the area. They allow me to save money without sacrificing quality. I highly recommend AD Engineering and plan to continue doing business with them in the future.”
Jonathan SelandMechanical Contractor
"AD Engineering has satisfied my needs in more ways than one. Their website is very user friendly and makes ordering a breeze. I am no longer comparing prices between supply houses or running around town trying to find a specific line set I need. The material they use is second to none. My guys love the toughness and versatility of the different insulation types. Since using AD Engineering to fill my demand, I have been nothing but pleased."
Corey NorthProduction Manager

PROTECTIVE PERFORMANCE

Enhanced Lineset Protection Solutions

Flexi-Pull

Experience the unparalleled quality of Flexi-pull, our UV Resistant Closed Cell Insulation that excels without the need for secondary coatings and boasts a robust resistance to snags and tears. Its construction includes heavy-duty flare nuts, ensuring superior durability. With the flexibility to accommodate lengths of up to 100 feet, Flexi-pull is perfectly suited for a wide range of applications. Choose Flexi-pull when you require an insulation solution that delivers consistent performance and flexibility.

Elastomeric Rubber

Experience superior thermal protection and flexibility with our Elastomeric Closed Cell Insulation. Designed to withstand ultraviolet radiation, it provides exceptional durability while meeting stringent industry standards such as the 25/50 ASTM E84 flame and smoke index.

Customized HVAC Solutions

Need a custom refrigeration line solution? We can handle custom lengths, brazed connections, special configurations, premade assemblies and more.

Send us your project details, and let our experts craft the perfect tailored solution that meets your specific requirements. Take the first step towards personalized excellence now!

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Custom Requests

Custom HVAC Solutions with Ad Engineering

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OUR PRODUCTS

HVAC Supply Solutions

Ad Engineering has got everything you need for your heating, ventilation, and air conditioning (HVAC) projects. Our online store is a treasure trove of everything HVAC, including custom options that are tailor-made just for your home or business. Plus, we offer factory direct HVAC supplies, which means you get top-notch quality without breaking the bank.

Whether you’re looking to make your living space cozier or your business’s air fresher and cleaner, we’ve got a variety of products like linesets, minisplits, and more. And the best part? Our friendly team is always ready to assist you in choosing the right products from our online selection, ensuring they fit your specific needs and last long.

CUSTOM HVAC SOLUTIONS

Need a custom refrigeration line solution? We can handle custom lengths, brazed connections, special configurations, premade assemblies and more.

Send us your project details, and let our experts craft the perfect tailored solution that meets your specific requirements. Take the first step towards personalized excellence now!
CUSTOM REQUESTS

WHY CHOOSE US

Your Partner in Lineset Solutions

High Quality

Specially engineered tubing and processing equipment. Tube is annealed to exact specifications and work hardening is minimized in the manufacturing process to reduce field kinks and leaks.

Quick Lead Times

Most items are in stock. Because we own the factory, special orders or non-stock items can be quickly scheduled, produced and shipped.

Cost Effective

Up front and clear pricing. We base our prices on material costs and never price gouge. We also offer special pricing on bulk and recurring orders.

Explore Our Products

Lineset flexi pull with end - Home Icon

Linesets

Mini Split System - Home Icon

Mini Splits

AC Coil - Home Icon

AC Coils

Suction Line - Home Icon

Suction Lines

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