Hvac Is Venting Into The Attic

As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in.

Hvac is venting into the attic. No you shouldn t use a towel or other absorbing material. The furnace has a stack which penetrates the flat roof and is about 3 4 above the roof plane. Insulating the duct may also help. The high humid air doesn t vent out of the house before it condensates in the duct and then runs back into the house causing damage.

A 1 1 ratio of intake and exhaust vents is needed to ensure proper airflow through your attic. You may have a bad boot around the roof vent that is leaking into the attic. Roof vents allow for natural attic ventilation but mechanical solutions are also available. Fresh combustion air for the furnace is coming from the soffit vents from both roofs.

However the furnace is in an attic space which has no venting for warm humid air from house from soffits from hot roof etc to escape. Rooftop fans and gable fans. Unless you have a slab where the equipment would likely be in the garage venting can go directly through the roof instead of routing through an exterior wall making it much easier to install the duct work along the upper floor. Do not use mechanical means electric attic fans.

Unless you plan to convert your attic to a living space it doesn t make sense to seal it and route your hvac vents up there. A lot of people opt for a whole house dehumidifierafter spray foaming their attic. Ridge vents these vents are installed at the top of a sloped roof and are commonly used on shingled homes. The most common vents are.

Or you may have a distance issue. Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed. To better manage the higher humidity resulting from shorter ac run cycles the whole house dehumidifier removes moisture from the home until it satisfies a humidistat setting typically something between 45 and 55 relative humidity rh. But you can install attic fans which will continuously replace the stagnant air with fresh outdoor air preventing your attic from turning into an oven.

A furnace in the attic is a design that works for all homes. There are two basic types of attic fans. For good attic insulation one square foot of ventilation is recommended per every 300 cubic feet of space within the attic.