Manual J Load Calculation & Manual D Duct Design Whether your company needs a residential Manual J load calculation to meet your local municipality's building permit submittal requirements or to ensure you’re sizing the heating and cooling system accurately for your client, Enser Consulting can meet your Manual J, Manual S and Manual D needs and exceed your expectations. Why use Enser Consulting for your Manual J and Manual D needs:
Benefits of Residential Manual J load calculations and Manual D duct design include:
Why Size A Heating & Cooling System? Oversizing The most common mistake made in sizing a residential heating and cooling system is oversizing. Issues with an oversized heating and cooling system include:
Using a "rule of thumb" estimate based on the square footage of the home without taking into account the construction of the home and other factors can lead to an oversized system. Correctly Sizing a Heating & Cooling System A correctly sized heating and cooling system will be sized using the Manual J load calculation procedure. The Manual J load calculation procedure takes into account the following items:
For new homes, the Manual D duct design procedure should be followed to properly size the ducts to ensure proper airflow to each room. The Manual J load calculation procedure sizes each individual room instead of sizing the home as a whole to ensure that each room receives the proper airflow. Without a properly sized duct system, there may be issues with the airflow resulting in hot or cold rooms. New heating and cooling equipment should be selected following the Manual S equipment selection procedure to ensure that the equipment is properly selected for the home. Even if your heating & cooling contractor or home builder is not required by your local building department to perform a load calculation on your new or existing home, home buyers and home owners should insist that a Manual J load calculation be performed for the reasons above. Heating & cooling contractors and builders should have the Manual J, D and S procedures performed to ensure that they are sizing the heating and cooling system correctly and offering the best possible product/service to their clients. Please contact us today with any questions. |
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