Makeup Air Kit Installation

Strong kitchen exhaust fans are great for removing smoke, heat, and odors — but they can also create pressure problems inside your home. That’s where a makeup air kit comes in. At Aither Heating & Air, we install professional-grade makeup air systems for homes in Statesville and surrounding areas. These kits ensure your home stays balanced, safe, and comfortable by replacing the air that’s being pulled out by high-powered ventilation systems.

What Is a Makeup Air Kit?

A makeup air kit is a system that introduces fresh, conditioned air into your home to offset the air removed by exhaust fans. It’s especially important in kitchens with high-CFM range hoods, powerful bathroom fans, or commercial-style cooking appliances. Without proper makeup air, your home can experience pressure imbalances that affect HVAC performance, indoor air quality, and even safety.

Problems caused by insufficient makeup air include:

• Backdrafting of combustion appliances like water heaters or gas furnaces
• Drafts or difficulty heating and cooling certain rooms
• Slamming doors or whistling sounds from air leaks
• Excess humidity or stale indoor air

Makeup air kits restore balance by automatically supplying fresh outside air whenever the exhaust fan is on. Most systems include a motorized damper, controls, and sometimes filtration or conditioning (to adjust temperature or humidity).

When Do You Need a Makeup Air System?

Not every home needs makeup air, but if you’re using a kitchen exhaust fan rated over 400 CFM — which is common in modern or custom homes — the International Residential Code (IRC) may require one. Even if it’s not required by code, makeup air is often recommended to protect your HVAC system and maintain indoor air quality.

You may need a makeup air kit if you:

• Have a large or commercial-style range hood
• Experience drafts or pressure changes when exhaust fans run
• Notice smoke or fireplace odors coming back into the home
• Have a tightly sealed or energy-efficient home with little natural air leakage
• Are remodeling your kitchen with upgraded ventilation

We evaluate your current ventilation setup, test for negative pressure, and recommend the best solution for your home layout and airflow needs.

How a Makeup Air Kit Works

Makeup air systems are designed to work seamlessly with your exhaust fan. When the fan turns on, the system automatically opens a damper to let in outside air — typically through a duct connected to a central location or to your HVAC system’s return side.

The main components of a makeup air kit include:

• Motorized damper: Opens when the exhaust fan is in use, closes when it’s off
• Pressure switch or relay: Activates the damper based on fan usage
• Ductwork: Brings in outside air to a controlled location in the home
• Filtration: Optional filters remove dust, pollen, or outside debris
• Air tempering unit: Optional heating or cooling to condition incoming air

Depending on your needs, we can install a simple passive system or an advanced powered unit that integrates directly with your HVAC system for fully balanced ventilation.

Our Makeup Air Kit Installation Process

At Aither Heating & Air, we take a customized approach to every makeup air installation. Every home is different, and we make sure the system we install fits your ventilation needs without overcomplicating your space or ductwork.

Our installation includes:

• Initial evaluation of exhaust fan CFM, home size, and air balance
• Choosing a compatible makeup air kit with the right controls and capacity
• Installing ducting to bring in outdoor air through a proper intake point
• Mounting and wiring the damper and control system
• Testing airflow and verifying safe operation of all combustion appliances

We ensure the system is quiet, energy-efficient, and code-compliant — and we clean up after ourselves so your space looks just as good as it did when we started.

Code Compliance and Safety

Modern building codes are increasingly strict when it comes to ventilation — and for good reason. Negative air pressure in tightly sealed homes can be dangerous, especially if you have gas appliances that vent combustion gases. Makeup air kits help you stay compliant and avoid serious issues like carbon monoxide backdrafting.

Our team stays up to date with local and national codes and will let you know if your current setup requires makeup air. We install all systems to meet IRC standards and local mechanical code so you can remodel or build with confidence.

Serving Homeowners and Builders in Statesville

Whether you’re a homeowner installing a high-powered range hood or a contractor building custom homes, Aither Heating & Air is your go-to resource for makeup air solutions. We work with:

• Kitchen remodelers and general contractors
• Custom home builders and architects
• Homeowners adding commercial-style appliances
• Energy-efficient home projects requiring mechanical ventilation

We’re easy to work with, responsive to timelines, and committed to doing the job right the first time. Our team treats your home with respect and always explains the system so you know exactly how it works and how to use it.

Schedule Makeup Air Kit Installation Today

If your home has a high-powered range hood or commercial fan setup, don’t overlook the importance of balanced ventilation. Call Aither Heating & Air at 704-682-5794 or email us at aitherheatingandair@gmail.com to schedule your makeup air consultation. We proudly serve homeowners in Statesville and surrounding areas with expert HVAC solutions that keep air flowing safely and efficiently.