Information Library

In this video we'll be discussing system tonnage. Tonnage is a term that describes how much heat the AC unit can remove from a home in one hour. Click "Read More" to watch our video!

Watch our video on CFM to learn what it is and how it affects your HVAC system.

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in this video, you will learn what a heat pump is, how it works, and if it is right for you.

This video will help you understand how a furnace works and how a gas furnace can heat your entire home efficiently.

When replacing or updating your furnace or air handler you will need to know your system configuration. Click "Read More" to watch our video!

When selecting a new furnace, understanding the cabinet width is crucial for a seamless installation. Furnace cabinets typically come in standard widths—14.5", 17.5", 21", and 24.5"—which correspond to different airflow capacities and ductwork sizes. Choosing the correct width ensures optimal airflow, energy efficiency, and compatibility with existing duct systems. Before purchasing, measure your current setup and consult with HVAC professionals to determine the best fit for your home.

Understanding the difference between single stage, two stage, and variable speed air conditioners and heat pumps. When purchasing a new air conditioner or heat pump it is important to know the different options you have and how they will affect your efficiency and comfort.

If you've ever wondered how heat pumps work, click "Read More" to watch our video!

This video takes a look at the most common home HVAC system: Furnace and air conditioning split systems, also known simply as split systems. We'll walk you through what these systems are and how they work. There's a good chance that your home has a split system, so it's important to understand how your ac unit and furnace work together to heat and cool your home. Click "Read More" to watch our video!

Dual fuel HVAC systems combine an electric heat pump with a traditional gas furnace to deliver the most energy‑efficient home heating and cooling solution. By automatically switching to the gas unit when outdoor temperatures drop below the balance point, they ensure reliable warmth while optimizing energy costs in cold climates.

There’s a lot to consider when updating your mobile home furnace system. To get started in understanding how to approach the buying process, our experts have put together this guide of questions and considerations. Write down the answers as you go and at the end you’ll have your list for what you need.

This video will explain the different system available at HVACDirect.com and how to make an educated purchase.

Do you want clean, freshwater and lower energy costs for your residence? In this video, we’ll discuss tankless water heaters and the benefits of installing one in your home.

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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, you will learn how to use our EZ install kit for ductless mini split systems. The EZ install kit allows you to install a ductless mini split without a contractor and save you hundreds on installation costs.

Looking to heat or cool a room without hiring a pro? A DIY mini split from HVACDirect.com is the easy, affordable way to add climate control to any space. Learn how to install a DIY mini split system with our step-by-step guide with video and see why it's a smart upgrade.

What size air conditioner do you need? This video takes you through our Air Conditioner & Furnace Size Calculator. We’ll walk you through how to size your HVAC system using our sizing calculator.

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With the right parts and tools, owners of almost any brand or type of mini split can now self-install their system. IMPORTANT: This how-to guide is not written to add, remove, or adjust refrigerant levels. Its only purpose is to explain how to install the line set and remove air from the system. All refrigerant used comes pre-charged from the factory in the condenser unit. If adding, removing, or adjusting refrigerant is necessary, please STOP immediately and contact a licensed HVAC technician for assistance.

Your gas furnace's flue pipe is a very important component of your home HVAC system - and this video covers why it's important and what you need to know about it. We'll tell you what a flue pipe is and what it does; we'll also cover the different types of flue pipes and how they pair with different types of furnaces. (Note: This video is for demonstration purposes only and should not be repeated at home. Always have a licensed HVAC technician install your furnace or AC system.)

The first steps in the buying process are all about determining “what” you need to buy, since most likely you are not a heating and cooling expert. In this video, we’ll ask you a series of questions to determine what you need. We recommend you write down the answers to these questions so at the end you’ll have an easy list and description of how to buy your new heating and cooling system.

There are many different acronyms by which efficiency is labeled. You have probably heard of some like EER, HSPF, or SEER but what exactly do they mean and what process do they use to determine these numbers? Well I am here to explain and better help you with future purchases in the HVAC world.

Among the top HVAC questions we get are those around the legality of buying and selling HVAC Systems and Equipment online. Click this article to continue reading and watch our informative video about the legalities of buying HVAC online.