Designed to provide the best technology to equalize pressure between indoors and outdoors, while providing effective ventilation for a cleaner, healthier home. Eliminate gases, smoke or particulates generated from naturally vented combustion devices like a fireplace or water heater. Only BROAN offers such a complete and simple solution for automatic and controlled fresh air into the home every time you turn on the range hood! This is an interlocked, synchronized system that installs easily and requires only low voltage wiring to the sensor. Perfect for new construction or retrofit into an existing home.
- BROAN® interlocked make-up air dampers provide outside air when required to keep the air in the home fresher by allowing the range hood to operate at optimum levels
- Universal design works with any BROAN® range hood to balance indoor air pressure by providing interlocked make-up air without requiring a direct wire connection between the range hood and the damper. Instead a sensor is attached to the exhaust duct to detect if the range hood is operating
- Slave dampers (MD6S, MD8S or MD10S) are interlocked to the main automatic or universal make-up air damper and open in unison for synchronized operation. They close, along with the main damper, as soon as the range hood is powered off. Slave dampers can be “ganged” together to provide a cost effective means to provide for higher volumes of make-up air
- Interlocked make-up air damper systems meet IRC Code requirements for make-up air with range hoods over 400 CFM
- Interlocked make-up air systems avoid wasted energy associated with barometric solutions and do not let unwanted air into the home during heating or cooling activities so air pressure is equalized for a well-balanced environment
- Fresh air wall caps are required for use with Make-Up Air Dampers
Broan Universal Make-Up Air Damper
Residential Kitchen Make-Up Air Webinar September 24, 2013
Cleaning a Range Hood Filter – Danny Lipford
Proper Use of a Range Hood- Danny Lipford
How to Ventilate the Whole House
Proper Ventilation Equals A Healthy Home - Danny Lipford
What are CFMs? - Danny Lipford
Range Hood & Ventilation Fans Tip - Check Terminations of Ventilation Ducts
How do I determine the size of the range hood I need? - Danny Lipford
Is there any regular maintenance needed on my range hood? - Danny Lipford
Does an Over the Range microwave provide adequate Capture? - Danny Lipford
Give Your Kitchen a 72-Hour Facelift with Danny Lipford
Island Range Hoods for Kitchen Upgrades - Danny Lipford
Importance of a Range Hood for Indoor Air Quality
Kitchen Renovation Includes Adding Range Hood with Danny Lipford
Can I install a range hood without venting it? - Danny Lipford
Keep your kitchen clear of smoke and fumes. Don't neglect ventilation when remodeling your kitchen, ConsumerReports.org
Cook with a gas stove? You could be breathing polluted air, study says, Los Angeles Times
Using gas stoves with no hood may expose many to air pollution, UPI Health News
Breathe Easy – What you need to know to ensure proper home ventilation, K+BB
5 Kitchen Renovation Goofs To Avoid, Consumer Reports
Clearing the Air, K+BB
The Kitchen as a Pollution Hazard
Fixing Stove Hoods To Keep Pollution Out Of The Kitchen
Range Hood Make-Up Air Specifier
Code compliant make-up air solutions for domestic range hoods in family dwelling units
To help you determine your customers’ make-up air needs, Broan-NuTone has developed this on-line tool. With our Make-Up Air Specifier you can be confident that the products you choose will meet the latest codes and regulations and satisfy the home’s needs. Use this tool to make your specification job easier.
Let’s get started by selecting the state where the dwelling unit will be located. CLICK HERE
MD8TU is rated
Rated 5 out of
This was easier to install then anticipated. You just have to make sure the duct cover has enough gap to install the sensors.
Date published: 2012-06-28
How to prevent the dampers from sticking in the open position?
The damper in our hood is sticking open, allowing cold air into the house. This has been an issue since we purchased the hood in 2008. How can I clean the dampers without injuring myself on the sharp edges? It is impossible to reach the top side of the damper, which appears to be the problem. Is there anything that I can do, or a kit that can be installed, to make sure the dampers close after the hood turns off?
Thank you for your question on the model MD8TU make up air damper. Please contact the Technical Service Department at 800-637-1453 for assistance. They will need to know the model or series number of your range hood in order to help you more.
Date published: 2014-11-26
What is the difference between MD8T and MD8TU?
The MD8T is a make-up air damper for specific Broan model range hoods. The MD8TU would be a universal make-up air damper for all Broan range hoods. If you have further questions, please contact our technical support department at 1-800-637-1453.
Date published: 2013-10-23
Can I install MD8TU in Attic for makeup air with Kitchen hood E64E30SS and 900 Cfm external blower
I have installed Kitchen hood E64 E30 SS with 900 CFM external blower.Now i want to know to select makeup air location. For me attic is perfect to hookup makeup air to my return duct system.
Thank you for your question on model MD8TU make up air damper. Please contact the Technical Service Department at 800-637-1453 for assistance.
Date published: 2014-12-01
Can you use multiple pressure sensors?
I want this damper to open up if either the range hood or the bathroom exhaust fan are running. Can you purchase an additional pressure sensor to control the damper from multiple exhaust sources? Or is the only option to have multiple damper?
Thank you for your question on the model MD8TU universal automatic make-up air damper. Please contact the Technical Service Department at 800-637-1453 for assistance.
Date published: 2016-12-06
At what pressure does the pressure switch activate ?
I'd like to know at what pressure the pressure switch is activated.
Thank you for your question on the MD8TU make-up air damper. The switch will respond at 0.05" W.C.
Date published: 2017-01-23