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Click ‘Get Form’ to open the blank manual j form in the editor.
Begin by entering the project address and model at the top of the form. This information is crucial for identifying your specific project.
Fill in the building orientation and total conditioned floor area, ensuring you provide accurate square footage for effective calculations.
Complete the mechanical contractor section, including their name and Johnson County License number if applicable. If a design professional is submitting, this may not be necessary.
Provide contact details such as name, phone number, and email to facilitate communication regarding your submission.
In the summary section, input winter and summer design conditions along with performance equipment capacity details for both heating and cooling systems.
Ensure all calculations for heat loss and gain are accurately filled out based on your equipment's specifications.

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Is manual.j free?

The reality is that most HVAC companies dont bother with the Manual J load calculation. And many companies that claim to do load calculations dont take the time to perform them properly. Rather than do things the right way, many contractors rely on wishful thinking or rules of thumb for HVAC sizing.

How much does it cost to have a manual J done?

Residential HVAC system design is a foundational step in the process to deliver predictable comfort, and estimating the heat loss and gain of a dwelling (Manual J) is the cornerstone of that process. Approaching a new equipment installation with a few guesses could lead you into a trap.

Do I really need a manual J load calculation?

Our enhanced Manual J load calculator is now powered by Cool Calcs innovative software. This dynamic integration lets you create fast, efficient ACCA approved reports that comply with national design standards and meet building code requirements. Best of all our Manual J load calculator is free through LennoxPros.

How much does manual J calculation cost?

A few minutes with a tape measure, a walk around the house, and a peek in the attic (and crawlspace) is all it takes. With a few templates of common building components, you can calculate a Manual J in about 15 minutes.

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