Arzel Zoning Blog

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Choosing the Right HVAC Zone Controller

We’re proud to offer an HVAC zone controller for nearly every application. To choose the right one, there are a few important factors to keep in mind. This post is a guide to those factors. It will help you choose a zone controller wisely so your customers get exactly what they want out of their […]

Zoning Systems from Arzel: What to Know

If you’re new to Arzel Zoning systems, here’s what you need to know. We’re different than other zoning manufacturers because our zoning systems are pneumatically driven. Instead of 24-volt motors, our dampers are actuated by low pressure air. This small difference makes a big impact when it comes to you. Why? Our damper fail rate […]

How to Explain HVAC Zoning to Your Clients Effectively

As an HVAC professional, you understand what HVAC zoning can accomplish. What you may not know is how to explain these systems to your clients effectively. To ensure your clients truly grasp the benefits of HVAC zoning and how it can enhance comfort in their spaces, it’s important to tailor your approach. Begin by discussing […]

Troubleshooting Arzel Zoning Systems

We take pride in manufacturing high-quality products and ensuring our contractors have the support they need. That’s why we’ve put together this comprehensive guide to troubleshooting Arzel Zoning systems. We understand that your time is valuable, and we want to empower you with the knowledge to resolve problems fast, so your customers can get back […]

Zone Control with Arzel: Understanding modern pneumatic zoning

Here at Arzel, our zone control panels are different. We pride ourselves on our reliable operation, lifetime warranty, and being made in the USA. Here’s how our zone controls work, which will also answer the question, “What makes Arzel’s zoning systems so reliable?” How Zoning Works HVAC zoning divides a home or business into separate […]

Recognizing Zoning Opportunities: How to Sell Zoning

How do you sell zoning? It’s a question we hear from contractors often. HVAC contractors know that zoning is a great solution, but they’re wondering how to sell it. We’ll share all of our tips in this blog, including strategies that work for our most active contractors. Learn the signs to look for, and you’ll […]

Navigating HVAC Zone Dampers: A Guide to Smart Comfort Control

HVAC systems play a pivotal role in maintaining optimal comfort levels. They were invented for it. However, traditional HVAC systems often struggle with maintaining consistent temperatures in different areas of a home or building. This is where HVAC zone dampers step in, offering a solution that allows for customized climate control in different zones of […]

How to Diagnose Arzel Zoning Dampers

Have you ever found yourself at a loss when it’s time to diagnose an Arzel Zoning damper? We pride ourselves on making reliable dampers, and they don’t fail often. Our dampers don’t have motors, which means you don’t have to replace motors when they wear out. The dampers are all operated by a small pump […]

How to Install a Zone Damper System: The Five Rules of Zoning

Designing the System When you set out to install a zone damper system, you have to begin with design. To help with that process, we thought we’d share our 5 rules of zoning. Use them to design a system that makes your customer more comfortable while maximizing the effectiveness of their equipment. For a deep […]

Which Zoning System Should I Choose?

Arzel Zoning is committed to offering innovative zoning solutions, and we have lots of options. So which zoning system should you choose? It can be hard to wade through all of the choices when it comes to zoning, and we wanted to help. Here is a guide to installing Arzel zoning systems. We will talk […]

How to Install Dampers in Existing Ductwork

Our unique retrofit dampers make it possible to install dampers in existing ductwork even when it seems impossible. Here’s a brief rundown of our zoning damper options, and some tips on how to install dampers in existing ductwork. Air Makes It Possible Arzel dampers are pneumatically driven, meaning they are operated by air. There’s no […]

Unlocking Your Potential: HVAC Contractor Training Opportunities at Arzel Zoning

We take care to offer a variety of excellent HVAC contractor training opportunities at Arzel Zoning, because we know that the contractors who install and service Arzel Zoning systems are an important part of our success. We want to be a part of what makes you successful too. The more you know about zoning, the […]

The Beginner’s Guide to Commercial HVAC Solutions

Are you working with commercial clients yet? If you’re ready to add commercial clients to your roster, but unsure of the options out there, this blog is for you. We’ll discuss the different ways to ensure optimal comfort and efficiency in commercial buildings by installing the right HVAC system. Commercial spaces don’t always have the […]

How Arzel Zoning Can Help Improve Indoor Air Quality

For HVAC professionals, ensuring optimal indoor air quality in a building is a top priority. As you know, maintaining a healthy and comfortable indoor environment is not just about temperature control. It also involves minimizing pollutants and allergens in the air. Let’s explore some advanced strategies to improve indoor air quality, and how Arzel Zoning […]

How Zoning Systems Help Commercial Building Energy Consumption

Commercial building energy consumption is a significant concern for business owners and facility managers alike. As energy costs continue to rise, finding ways to reduce HVAC (Heating, Ventilation, and Air Conditioning) energy consumption becomes crucial not only for cost savings but also for environmental sustainability. One effective solution to tackle this challenge is the implementation […]

Exploring the Role of HVAC Zone Dampers in Zoning Systems

Airflow is the key to HVAC zoning systems, and that’s why dampers are so important. HVAC zone dampers direct conditioned air to the places calling for it, improve airflow in the building, and even regulate static pressure in the ductwork. Let’s explore the role of HVAC zone control dampers and get a deeper understanding of […]

What Is an HVAC Zoning System and How Does it Work?

Efficiency and customization are paramount in modern HVAC technology. One revolutionary advancement that has gained increasing popularity is the HVAC zoning system. This innovative approach to heating and cooling enhances comfort and significantly improves energy efficiency. In this article, we will delve into the world of HVAC zoning systems, exploring their definition, components, benefits, and […]

New Price for the MPS Zoning Control Panel

With our special pricing locked in, MPS® Series Zoning Panel is an unbeatable value! You may already know that we offered special pricing for several months. Now, we’re locking in that special price so it will be the new normal price starting April 1, 2024. Specifically engineered for single-stage HVAC systems, the MPS is an […]

HVAC Zoning, the Easy Way: Use our Pro Portal

We’re proud of our professional portal at Arzel. We want it to make your job easier, whether you’re an HVAC technician, distributor, or sales rep. If it’s not doing that yet, this is the article for you. We’ll talk about how to find what you need, shine a spotlight on some great resources, and tell […]

HVAC Zoning Problems: Does Zoning Hurt Airflow and Equipment Lifespan?

Sometimes I hear contractors and technicians saying things like, “HVAC zoning is bad for airflow, it’ll shorten the life of the blower unit, it’ll damage the air conditioning compressor, it’ll cause this bad thing or that bad thing…” In a properly designed system, HVAC zoning won’t do any of things. In this blog, we’ll focus […]

Low-Voltage Troubleshooting: How to Beat the Heat and Find the Problem

Nothing is more frustrating than low-voltage troubleshooting when it’s hot, the calls are piling up, and you’re getting home just in time for bed. Or choosing to sleep in the truck as the on-call technician. I remember those days, and while I might not have that anymore, providing tech support at Arzel reminds me that […]

Static Pressure and Summer Fun

Summer is here, and with that comes a rush of service calls. In that rush, as technicians, we often skip the basics of air conditioning performance. That starts with proper airflow. Air conditioning requires proper airflow and proper airflow changes with static pressure. The Total External Static Pressure (TESP) corresponds to blower performance data charts. […]

The Importance of Load Calculations for HVAC Contractors

As an HVAC contractor, you know the importance of correctly sizing the furnace and air conditioner for your client’s home or business. Accurate load calculations prevent the risks associated with oversized or undersized systems, such as increased energy costs, reduced efficiency, and premature equipment failure. Load calculations, or “Manual J” for residential and light commercial […]

Zoning Evaluation: Measuring Ductwork Capacity

When you’re considering zoning a building, one of the most important steps of zoning evaluation is measuring ductwork capacity, or how many Cubic Feet Per Minute (CFM) the duct can deliver. This post will discuss the importance of measuring the CFM capacity of a building’s ductwork and provide an overview of the process for calculating […]

Custom HVAC Zoning Applications: Benefits of Arzel Zoning

If you’re an HVAC contractor looking to design a custom HVAC system for a unique application, Arzel® zoning systems are an excellent choice. By taking advantage of the unique features and benefits Arzel offers, you can design an HVAC system tailored to your customer’s specific needs. Here are some of the possibilities, and steps you […]

Air-Driven Zoning Technology: Why Arzel® Puts its Trust in Pneumatic HVAC Zoning

For homeowners and businesses alike, finding the most effective way to heat and cool their property is essential. That’s why Arzel® is trusting in pneumatic zoning—an air-driven zoning technology to control the temperature in different parts of the home or building. This blog post will explore why Arzel® is confident in this air-driven zoning technology. […]

HVAC Zoning Best Practice: Every Master Bedroom Deserves a Thermostat

There are a lot of best practices, guidelines, rules, and other how-to’s when offering an HVAC zoning system to your customer. We need them all to ensure design, installation, and basic operation are done correctly. Still, there is just one basic rule we at Arzel® like to tell people to keep in mind when thinking […]

HVAC Zoning with Multi-Stage Equipment

HVAC Zoning and multi-stage, variable-speed equipment seem to be a match made in heaven by the airflow gods. But how great is it, really? We decided to investigate. This case study found that the multi-stage equipment combined with HVAC zoning reduced runtime by 20%. The Details The application was a two-story, 1,900-square-foot home that several […]

Top 10 Residential Economizer Applications

Fresh air technology like the Arzel® CoolMizer make for a great addition for residential and light commercial HVAC systems. Do you know the top 10 residential economizer applications? First, it’s important to know that economizers can be a solution for customer comfort, air quality challenges, and energy savings. The opportunities for economizers are not as […]

Eight Reasons Why Arzel Is Your Best HVAC Zoning Solution

For 40 years, we’ve been proving that Arzel is your best HVAC zoning solution. We are proud to offer these 8 reasons why. 1. EASY Arzel’s line of EzySlide dampers can typically be installed in less than 5 minutes, in 3 simple steps, making them perfect for retrofit applications. These dampers are available in branch […]

5 Ways to Turn Home Sales into HVAC Zoning Opportunities

Before you read these 5 ways to turn home sales into HVAC zoning opportunities, put yourself into a homebuyer’s shoes. Remember when you were in the market for a new home? Can you recall the exhaustive process of browsing through countless realtor sites looking for the perfect match? After looking at your top choices, you […]

The Best Tips for Making Sales as an HVAC Zoning Contractor

The worst question is that which goes unasked. This statement certainly applies to HVAC sales, especially when offering accessory products like HVAC zoning. However, when working with your homeowner, it is essential to ask questions about their needs, not the product. It is more effective to first look into their comfort issues and then match […]

HVAC Contractors: 6 Ways to Beat the Competition

Are you an HVAC contractor looking for ways to beat the competition? Consider this real-world math story problem: According to recent US Census data, there are about 122 million existing homes in the U.S. HVAC Zoning is only offered 24% of the time to homeowners. About 73% of homeowners have reported they experience comfort issues […]

Top 10 Light Commercial Economizer/Fresh-Air System Applications

Before we get into the top 10 light commercial HVAC economizer applications, let’s talk about why this list matters. Light commercial buildings are among the most common applications for economizers or fresh air systems. That means that installing economizers opens up new opportunities for contractors in these light commercial settings. Fresh air systems can help […]

CoolMizer: Energy Efficiency for Residential HVAC Systems

Homeowners want their HVAC systems to improve indoor air quality and reduce energy bills. At the same time, they have comfort expectations. They want their HVAC system to maintain or even improve their comfort at the same time as it saves them money. As an HVAC professional, you now have a product proven to provide […]

Effective Thermostat Hacks for forced-air HVAC Zoning Systems

For customers with forced air zoning, you may tweak many variables to increase the energy efficiency of their HVAC zoning system, one of the variables being the thermostat. We put together our most effective thermostat hacks for HVAC zoning systems. Many smart and programmable thermostats offer more advanced system flexibility than traditional equipment and can […]

A Whole Approach To HVAC System Efficiency

Many HVAC Professionals ignore the benefits of approaching complex systems as a whole. They buy into equipment models that create changes in one area. But these affect the dynamics and, therefore, the effectiveness of other areas. We recommend a whole approach to HVAC system efficiency. Levels of System Efficiency “System Efficiency” has several levels, listed […]

10 Benefits of Multi-Stage & Variable Speed Equipment

The benefits of multi-stage, variable speed equipment are numerous. We’re going to share the 10 biggest benefits. But first, let’s talk about what this equipment is. What is multi-stage variable speed equipment? Multi-stage and variable-speed equipment are components commonly used in HVAC systems to regulate the temperature and airflow within a building. How does it […]

AHR – The Show to See

It’s been a long year, and we’re all hoping that 2022 brings better business, more opportunities, and a chance to connect. One way to ensure that is to attend the AHR Expo in Las Vegas from Jan 31st-Feb 2nd Why AHR? New Tech – No other HVAC conference draws the same number of companies, engineers, […]

Fresh Air and a Fresh Approach with CoolMizer

CoolMizer Adds Fresh Air and Adds to Your Bottom Line The addition of fresh air to a home is a concern for your customers. Increasingly health-conscious consumers will be aware of the guidance from organizations like the American Lung Association regarding the importance of proper ventilation. And of course, proper fresh air introduction is just […]

HVAC Zoning Helps Dial In IAQ

Air quality considerations as a part of HVAC systems have always been important. Still, recent events have made it a primary concern for many consumers, especially in retrofits and system upgrades. High-MERV filters are now the norm, Humidifier and dehumidifier systems more common, and even UV and Ionizing systems are being more requested. As consumers […]

Is Adding HVAC Zoning to Your Retrofit Work Worth It?

Retrofit work can be a consistent and profitable line of work for just about any HVAC contractor. Whether it’s repairing or replacing an existing system or installing a brand-new system in an older house that never had a central air system, retrofit can be a tremendous part of your business – particularly in the current […]

How to Tackle Temperature Variances in Customers’ Homes

Every contractor has that one client. The one you installed a few years ago, but that you still hear from. It may be to schedule regular maintenance, or it might be for another reason. Sooner or later, the conversation will come around to one recurring subject. And you’ll need to pull out your go-to solution […]

Zoning 101: The Potential Risks of Closing Registers

When it comes to priorities, nothing is more important to a homeowner than the comfort and safety of their living space. When you’re conducting a service call for a homeowner, what are the most common concerns they have about their current HVAC system? They may express concerns over high energy bills or frustration about poor […]

Is HVAC Zoning or Installing a Ductless Mini-Split Better for HVAC Contractors?

When you're looking to upgrade your HVAC solutions, the choices presented can be staggering. One of the increasingly more common solutions presented are Ductless Mini-Splits. Popular in Europe, and increasingly available here, they can be a good solution, but not in all cases. Read more about their limitations, and how zoning might be a better solution for you, in this article originally written for the same contractors you may be working with on your upgrade.

What Makes the Arzel CoolMizer so Cool?

The Arzel CoolMizer is a stand-alone ventilation control system that delivers the power of commercial economizers to the residential and light commercial markets. It has been designed specifically for residential, light commercial, and split system HVAC units, all while keeping you, the Arzel contractor, in mind. The Arzel CoolMizer operates as an intelligent, fresh air […]

What is HVAC Zoning?

Do you know what HVAC zoning is? Whether you’ve been installing these systems for a while, or are just now getting around to learning more, this video can help. It answers the question, “What is HVAC zoning?” in a way that is accessible to homeowners. You can share it with them to explain how zoning […]

What is the Big Problem With Tiny Zones?

If you're looking at zoning as a possible solution for your HVAC comfort, one of the first questions you and your contractor should look at is - How many zones will our system need? This article for contractors offers some information on the proper design, and points out that sometimes more (zones) is less (performance). Need help with the lingo? See our glossary.

Meet Nick, Arzel’s new Embedded Systems Engineer

Introducing the newest member of the Arzel® team, Nick Seifert! Nick has joined Arzel® Zoning as our Embedded Systems Engineer. Nick grew up in Massillon, OH and graduated from The University of Akron with a Bachelor’s degree in Computer Engineering. He is currently pursuing a Master’s Degree in Electrical Engineering from The University of Akron. […]

Cy, Arzel’s Test Cycle Damper celebrates a BIG milestone

One of the biggest issues a consumer faces when installing an HVAC system is reliability. After all, most of the equipment is hidden away outside or in the attic, and some of it is completely hidden away inside your walls. So any time you can prove the reliability of your equipment, it's one less thing to worry about. Meet "Cy", Arzel Zoning's test damper. We've been running Cy continuously for years, and more than 20 MILLION cycles. Why? to prove that pneumatic dampers are THE solution to provide comfort, efficiency and reliability you can count on.

AirBoss or HeatPumPro: Which is Right for Your Application?

Which zoning system is best? Spoiler alert: we don’t really have an answer for that. The best zone control panel for your application depends on what you need. Here are 3 main questions to keep in mind: How do you want the staging of the HVAC equipment achieved? How many zones will the designed system […]

Why should you care about fresh air and healthy IAQ?

Check out our video below on how to protect yourself from breathing in infectious droplets outdoors, as well as indoors!

Combat COVID with clean & fresh air! #STOPTHESPREAD

Why offer fresh & safe air indoors? According to recent studies, scientists suggest that natural light, fresh air could keep the coronavirus out of your home/workplace Studies also show that viruses have the ability to thrive in dry and cool environment, but the likelihood of viral persistence outdoors is lower Traditional hospitals were built with high ceilings […]

Arzel is here to help!

To stop the spread of corona, we’ve partnered with MatterHackers, Inc. and changed our focus and use of our 3D printers to manufacture components for face masks! They will be donated to medical workers on the front line during this pandemic! We are awaiting new orders next week, and will continue to manufacture and donate! […]

A letter from Arzel’s new VP of Technical Sales, Ken Barton

Growing up in the trades, primarily in the HVAC industry, Arzel became the sole and only zoning solution that I offered to my customers. Their products were dependable, innovative and really stood the test of time, never making me look bad or disappointing. When it came to Arzel’s core values and how they supported their […]

HVAC Zoning System Installation Done the Right Way

Our goal at Arzel® Zoning is to guarantee contractors, distributors, and HVAC professionals understand HVAC zoning system installations. This way they can offer opportunities to add value and comfort to their customers’ homes. We believe training is a crucial part for contractors, as it saves labor by reducing installation, or setup times. It also increases […]

The Most Common Misconceptions About Installing Zoning

Maybe you've never heard of "VAC Zoning", maybe you're familiar with it, but have heard it's too expensive, too hard to install, or not needed for your system. Many of those preconceptions are just wrong. Zoning can add efficiency, performance and comfort to your home. Read more about these misconceptions, and the truth about zoning here. The article was originally written for contractors, but the lessons are universal.

Things Contractors Need To Know When Installing Zoning

Thinking about zoning as a solution for your HVAC comfort needs? Zoning has proven to be a reliable, efficient, and effective solution for many consumers, but as with anything new, you may have questions. We cover many of them in our FAQ page, but you may also find this contractor article useful. It covers many of the issues they face, and that you as an informed consumer should be aware of.

Meet Dave, Arzel’s new Sales Manager

David Domanick has joined Arzel Zoning as Sales Manager. David brings over 15 years of sales/customer service experience and will use his skills to drive sales growth and relations with distributors and contractors alike. Prior to joining Arzel, David held the position of Director of Customer Services at GED Integrated Solutions, a glass window manufacturing […]

Spring Tune-Ups Bring Zoning Opportunities

Even though the warm weather still seems out of reach, spring is almost upon us; and with spring comes everyone’s annual surge of cleaning. Usually, when we get into spring cleaning mode, we attack what we see: the dust that’s been layering that shelving unit for the better part of a year, the clothes that […]

Zoning, Personal Use, and You

There is more than one zoning system out there for contractors to install on a job; so how do you know which one to use? Which one will give substantial energy savings? Which one has the best features and easiest integration? Which system has the longest life span and lives up to its claims? The […]

What You Need to Know About Title 24 And Bypass

Panic and mayhem seem to be raining down on the HVAC streets of California as contractors scramble to interpret the new regulations and changes to bypass systems with the passing of the 2013 version Title 24. What is title 24? Title 24 is the building and energy code standard in California, which ensures building construction, […]

The Importance of Continuing Education

The HVAC industry is always changing. New technologies such as app-driven systems and touchscreen thermostats are entering the industry every year. Manufacturers are constantly making improvements on products. How can HVAC contractors keep up with these changes? Through continuing education classes. Continuing education (CE) classes are important for every contractor in the HVACR field. These […]

Allergy Season and Indoor Air Quality

After this past winter, I’m sure we’re all glad that the snow has melted and spring has finally found its way here; but warmer weather comes with its own set of problems. Within days of being able to see the grass again, allergy sufferers were reminded of what they were missing for the past four […]

Toolbox Talk: Digital Manometers

One of the most common phrases coming out of our Technical Support department during a troubleshooting call is, “We recommend a digital manometer for that.” If you are used to working mostly with motor-driven systems, you may not have had as much of a need for one; but (besides being fun to say) manometers are […]

HVAC Industry Trends and Arzel’s Response to Them

Like every other industry and business concept, the HVAC industry has its ebbs, its flows, and its trends. In the past year or so, a couple different trends have floated to top of the list:

Arzel Zoning Blog

Choosing the Right HVAC Zone Controller

Zoning Systems from Arzel: What to Know

How to Explain HVAC Zoning to Your Clients Effectively

Troubleshooting Arzel Zoning Systems

Zone Control with Arzel: Understanding modern pneumatic zoning

Recognizing Zoning Opportunities: How to Sell Zoning

Navigating HVAC Zone Dampers: A Guide to Smart Comfort Control

How to Diagnose Arzel Zoning Dampers

How to Install a Zone Damper System: The Five Rules of Zoning

Which Zoning System Should I Choose?

How to Install Dampers in Existing Ductwork

Unlocking Your Potential: HVAC Contractor Training Opportunities at Arzel Zoning

The Beginner’s Guide to Commercial HVAC Solutions

How Arzel Zoning Can Help Improve Indoor Air Quality

How Zoning Systems Help Commercial Building Energy Consumption

­­­­­­­Exploring the Role of HVAC Zone Dampers in Zoning Systems

What Is an HVAC Zoning System and How Does it Work?

New Price for the MPS Zoning Control Panel

HVAC Zoning, the Easy Way: Use our Pro Portal

HVAC Zoning Problems: Does Zoning Hurt Airflow and Equipment Lifespan?

Low-Voltage Troubleshooting: How to Beat the Heat and Find the Problem

Static Pressure and Summer Fun

The Importance of Load Calculations for HVAC Contractors

Zoning Evaluation: Measuring Ductwork Capacity

Custom HVAC Zoning Applications: Benefits of Arzel Zoning

Air-Driven Zoning Technology: Why Arzel® Puts its Trust in Pneumatic HVAC Zoning

HVAC Zoning Best Practice: Every Master Bedroom Deserves a Thermostat

HVAC Zoning with Multi-Stage Equipment

Top 10 Residential Economizer Applications

Eight Reasons Why Arzel Is Your Best HVAC Zoning Solution

5 Ways to Turn Home Sales into HVAC Zoning Opportunities

The Best Tips for Making Sales as an HVAC Zoning Contractor

HVAC Contractors: 6 Ways to Beat the Competition

Top 10 Light Commercial Economizer/Fresh-Air System Applications

CoolMizer: Energy Efficiency for Residential HVAC Systems

Effective Thermostat Hacks for forced-air HVAC Zoning Systems

A Whole Approach To HVAC System Efficiency

10 Benefits of Multi-Stage & Variable Speed Equipment

AHR – The Show to See

Fresh Air and a Fresh Approach with CoolMizer

HVAC Zoning Helps Dial In IAQ

Is Adding HVAC Zoning to Your Retrofit Work Worth It?

How to Tackle Temperature Variances in Customers’ Homes

Zoning 101: The Potential Risks of Closing Registers

Is HVAC Zoning or Installing a Ductless Mini-Split Better for HVAC Contractors?

What Makes the Arzel CoolMizer so Cool?

What is HVAC Zoning?

What is the Big Problem With Tiny Zones?

Meet Nick, Arzel’s new Embedded Systems Engineer

Cy, Arzel’s Test Cycle Damper celebrates a BIG milestone

AirBoss or HeatPumPro: Which is Right for Your Application?

Why should you care about fresh air and healthy IAQ?

Combat COVID with clean & fresh air! #STOPTHESPREAD

Arzel is here to help!

A letter from Arzel’s new VP of Technical Sales, Ken Barton

HVAC Zoning System Installation Done the Right Way

The Most Common Misconceptions About Installing Zoning

Things Contractors Need To Know When Installing Zoning

Meet Dave, Arzel’s new Sales Manager

Spring Tune-Ups Bring Zoning Opportunities

Zoning, Personal Use, and You

What You Need to Know About Title 24 And Bypass

The Importance of Continuing Education

Allergy Season and Indoor Air Quality

Toolbox Talk: Digital Manometers

HVAC Industry Trends and Arzel’s Response to Them

Exploring the Role of HVAC Zone Dampers in Zoning Systems