Specification

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Combustion
Combustion Air Systems
Make-Up Air System
Make-Up Air System
Note: The IAH-4 and the IAH-6 can be purchased separately.
Includes Intake
Air Hood IAH-6
Efforts to make your home more energy efficient
prevent fresh air from entering the home and can
lead to compromised air quality and appliance
inefficiency. Weather stripping, caulk, sealants, and
moisture barriers such as Tyvek
®
tighten the home,
reducing air changes and locking stale air inside.
When a home can’t breathe, laundry dryers,
range hood fans, bathroom fans and heating
appliances take more time to do their jobs, wasting
precious energy.
These problems can be solved with the installation
of a Make-Up Air System from Field Controls. The
MAS delivers fresh air automatically, improving
indoor air quality, improving appliance efficiency,
and saving energy.
• To improve appliance efficiency
• To improve Indoor Air Quality
• To conserve energy
• To increase fresh air changes
• To replace air exhausted by bathroom
fans, laundry dryers, range hood fans,
and other exhaust devices
When to use the MAS
Whole House Make-Up Air System
The Make-Up Air System connects the HVAC system
to the outside to allow controlled amounts of fresh
air to enter the system when needed. The system
automatically senses pressure changes and a need
for air flow and opens to bring a precise, metered
amount of fresh air into the air handler. Here the
cold air is tempered as it mixes with warm air in the
return duct. The air is then heated and distributed
through the home via the central duct system. When
the need for air is fulfilled, the system closes to
prevent further air infiltration. The system must be
installed by a qualified heating and air conditioning
professional and is adjustable for homes from
1000 to 4000 square feet. It does not require any
electricity or maintenance.
How the MAS works