Priority Energy, Residential Ventilation Systems, IL

Ventilation Design for Healthy Indoor Air!

Did you know the indoor air quality of your home can be 70 times worse than the air outside?  When it comes to improving your indoor air quality, it’s a four step process:

  1. Seal your home up as tight as you can (our energy codes are making sure we do this).
  2. Remove anything that can pollute the home (anything that off gasses – Volatile Organic Compounds (VOCs), formaldehyde, harsh cleaning solutions, etc.).
  3. Dilute indoor air contaminants/gases left over with ventilation.
  4. Filter out particulates (dust, dander and other) with a Merv 13 or better filter.

Even though ventilation systems have been required by the code since 2012, many of the homes built today still lack proper ventilation.  Priority Energy has been designing and installing cost-effective ventilation systems for new and existing homes across the United States for over a decade. We also influenced and helped write state requirements for ventilation.

Our IECC energy codes typically refer to ASHRAE standards for ventilation.  The most common standard referenced today is ASHRAE 62.2, which is updated every three years.  The ASHRAE standard is based on the size of the house in sq ft. and the number people living in the home (typically we base this on the number of bedrooms plus one).

When it comes to residential ventilation systems there are three choices:

  1. Exhaust only systems – the most common means here is attaching a special switch to your bathroom exhaust fan which will make sure the fan runs enough to meet ventilation requirements.

Priority Energy is an industry leader, offering Mechanical Load Sizing services to maximize comfort and indoor air quality:

  • ACCA Manual J –  A complete Manual J will give you the total heating & cooling load (necessary for the ACCA Manual S – Equipment Selection) along with room-by-room loads (necessary for an accurate ACCA Manual D – Duct Design) so the installed systems heating/cooling capacity can be appropriately distributed among the home to maximize comfort.

  • ACCA approved software must be utilized For ACCA manual J to be accurate (click here for a list of approved software programs). Priority Energy utilizes the latest version of Wrightsoft Right J8 for all load calculations.

  • ACCA Manual S – A total block load created with the ACCA Manual J will provide the designer the total heat loss for heating and the total heat gain (latent and sensible) for cooling.  With the total heat load/gain, the designer will be able to select the exact furnace, AC/heat pump, and evaporator coil necessary to meet the home’s heating and cooling loads. This is required for permitting in the State of IL under the IECC 2015

  • ACCA Manual D – An ACCA Manual D will give you a duct diagram from the furnace/air handler to the registers, including all ductwork, connections/fittings and registers.  A duct system designed with ACCA approved software will give you a quiet duct system that will extend the life of the furnace/AC and decrease comfort complaints from the buyers/homeowners.

Click here to see a sample of a complete Mechanical Sizing Report necessary for code compliance.

Other Resources on Mechanical Sizing

Priority Energy can provide an ACCA Manual J/D/S at competitive rates within 48 hours. Contact us to discuss your plans today.

  • Thank you again and you will be the first person I call if I need additional part or service from your company.
  • I just wanted to send this message to all you and say GREAT JOB!  We had a rough inspection today and passed for the Woodward Ave. house. The inspector told us "if every house I inspected looked like this one I would be out a job".

    Anonymous Builder
  • We were so impressed with the amount of information the Priority Energy technicians gave us during our ENERGY AUDIT.  If you are buying a house, I would strongly recommend having them do an energy audit on it, in addition to your usual home inspection.

  • Thanks for a super intelligent and deep seminar expertly handled by a staff which was a pleasure to be around. Lunch was superbly and subtly handled.

    A.S. Architect
  • I wanted to thank you for all of your extra time and energy during our BPI training over the last few weeks. You really helped put things in perspective. You are an awesome crew and your facility is a valuable resource for students and the community

    BPI Student, L.E.
  • There is much less dust in the house and the monthly gas and electric charges have been reduced by 10 to 15%.....I'm sure I will see greater savings over a twelve month period......thanks again.

    Aeroseal Client, R.N.

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