Adding a zone or two is a smart choice on some occasions but not always.
Adding a second zone of heat in attic.
Well mainly it s a way to save space.
But by adding powered attic fans you will draw more air into the attic.
This solution doesn t address the ductwork so it is an inferior solution compared to creating an unvented conditioned attic.
If the temperature is too cold or too hot for your liking the thermostat.
During a major energy upgrade that we recently completed we had two return ducts a 14 in the main house and a 12 return duct in the master bedroom.
The zone control panel is the central control that will communicate between thermostats dampers and your hvac equipment.
We went with.
2 improving ventilation in the attic and or insulating the attic floor to minimize the effect of attic heat and cold in the two season on the upper floor.
So why put an hvac system up in the attic at all.
Using insulation only keeps the attic s heat from traveling through your home.
Thermostats read the air temperature in each room or zone of your house.
Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.
That was for a 1 5 ton system and the static was 0 33 inches of water column iwc.
The cost of a dual zone system depends on your hvac contractor but a ballpark figure would be around 2 500 3 500 if it is done during an installation depending on the size of your house and your area.
The thermostat will usually start at 95 degrees fahrenheit which is the temperature that the attic fan usually starts at.
An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.
Most homeowners who build an insulated mechanical room in their attic make the room too small.
Blake shurtzmuch like the recommendation to install dampers i almost always emphasize adding a second return when replacing ductwork.
It will help to keep the attic much cooler in the summertime.
It is mounted by your equipment and is the brains of the entire zoning application.
Several issues to consider.
1 installing a manual or electrically controlled which uses second thermostat to control it damper valve in the ducting to regulate the percentage of airflow going to each area.
You should only add zones if you re still not comfortable after optimizing the building envelope.
In other words seal air leaks and increase insulation first.
Attic hvac systems save space.