Attic Hvac Requirements

Insulation level are specified by r value.

Attic hvac requirements.

The following are attic furnace installation requirements based on 2009 irc and 2009 imc the codes refer to it as appliances in attics. The intended purpose was to allow warm air and moisture to escape. First off attic installations are among my least favorite applications from a serviceability system longevity and a laundry list of other items. These are significant challenges.

To continue locating hvac systems in the attic space. Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts. Vented attics can be effective as long as hvac ducts are not located in them and the ceiling deck is well air sealed and insulated. Attic furnace installation must comply with you local mechanical code or imc international mechanical code if such was adopted in your area.

The intent of this tip sheet is to provide a general understanding of the code requirements and does not address the subject in great detail. Here s why that is a good thing. Additional information can be obtained from your local. All ducts are at risk for this type of leakage.

One of the main purposes of the 2016 energy code is to cut down on the amount of energy that home owners use on a regular basis. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Posted february 3 2017 by rick cowperthwaite. The california energy commission updates the building energy efficiency standards title 24 parts 6 and 11 every three years by working with stakeholders in a public and transparent process.

2016 energy code changes. So why put an hvac system up in the attic at all. The higher the r value the better the thermal performance of the insulation. Traditionally building codes have required attic ventilation.

Attic and hvac requirements. R value is a measure of insulation s ability to resist heat traveling through it. Attic hvac systems also require shorter ducts. Attic furnace access passageway and platform.

There will be less duct leakage. Duct leakage causes a lot of problems including less. Sometimes air conditioned air will seep right through your ducts and become useless instead of heating and cooling your home. Residential attic hvac equipment july 1 2016 this tip sheet reflects code requirements of the 2015 international residential code irc.

Well mainly it s a way to save space. Attic hvac systems save space. Intake vents located at the lowest part of the roof under the eaves. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.