Attic Hvac Requirements

California s energy code is designed to reduce wasteful and unnecessary energy consumption in newly constructed and existing buildings.

Attic hvac requirements.

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. First off attic installations are among my least favorite applications from a serviceability system longevity and a laundry list of other items. Attic furnace installation must comply with you local mechanical code or imc international mechanical code if such was adopted in your area. Duct leakage causes a lot of problems including less.

All ducts are at risk for this type of leakage. Attic and hvac requirements. Intake vents located at the lowest part of the roof under the eaves. Residential attic hvac equipment july 1 2016 this tip sheet reflects code requirements of the 2015 international residential code irc.

To continue locating hvac systems in the attic space. Posted february 3 2017 by rick cowperthwaite. Insulation level are specified by r value. Here in florida it s just a bad idea due to the high humidity and temperature in a vented attic and the condensation issues that can and usually does occur on the equipment.

Well mainly it s a way to save space. Here s why that is a good thing. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan. 2016 energy code changes.

Attic furnace passageway and service area electrical requirement. 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. The following are attic furnace installation requirements based on 2009 irc and 2009 imc the codes refer to it as appliances in attics. Attic hvac systems also require shorter ducts.

Sometimes air conditioned air will seep right through your ducts and become useless instead of heating and cooling your home. 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. Attic furnace access passageway and platform. The intended purpose was to allow warm air and moisture to escape.

The higher the r value the better the thermal performance of the insulation. There will be less duct leakage. Attic hvac systems save space. So why put an hvac system up in the attic at all.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. These are significant challenges. Additional information can be obtained from your local. 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.