Rooftop Units & PTAC

Through-the-wall air conditioners, or mini PTACs, provide permanent, room-by-room comfort without ductwork or an outdoor condenser. Learn how they work, where to install them, how they compare to window units and mini splits, and how to choose the right BTU size and features for your space.

Upgrading a rooftop HVAC system doesn’t have to mean expensive roof modifications. A custom curb adapter provides a seamless solution by allowing new HVAC units to fit directly onto existing curbs. Designed to align airflow, support the unit, and speed up installation, curb adapters save time, reduce costs, and boost energy efficiency. At HVACDirect.com, we make it simple—just share your unit details, approve the drawings, and get a custom-built adapter ready to install.

Commercial packaged units are all-in-one HVAC systems designed for efficient cooling and heating in offices, retail, and light commercial spaces. Choose from packaged ACs, heat pumps, or gas packs based on your climate, with sizes from 3 to 25 tons and multiple voltage options. Proper sizing ensures comfort, efficiency, and long-term reliability—check your current unit’s ID tag or consult a pro for new installations

When installing a new package unit—whether it’s a gas pack, heat pump, or straight AC system—the equipment is only part of the equation. The right accessories ensure a safe, code-compliant installation and help your system perform at its best. From electrical whips and disconnect switches to smart thermostats, thermostat wire, electric heat kits, and square-to-round adapters, these add-ons make setup smoother and extend system life.

Packaged systems, sometimes referred to as rooftop systems or packaged units, are similar to a traditional furnace and air conditioner system, only both units are packaged into one. In this video we will explain what a packaged system is and the pros and cons.

Learn how to buy your HVAC system online!

Simply take your shopping list of your system needs and use those specifications to filter down to the right HVAC system for your home. Start by going to the top navigation, selecting the type of equipment you are looking for.

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Buying your heating and cooling system online saves you money – and you don’t have to be an HVAC expert to do it! We’ll walk you through how to determine what to shop for to replace your home HVAC system.

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In this video, we will explain the different features of a Packaged or Rooftop HVAC system and why you might need one, all available at HVACDirect.com.

When searching for a new heating or cooling system, there are many different types of equipment for home and business owners to select. One economic choice which is well-suited for most residential and commercial applications is a packaged unit.