Estimate and Design
How our load calculation service works
Our estimating team prepares Manual J, S, D and commercial Manual N calculations so your permit application and install stay on schedule.
Manual J load calculations
Massachusetts and New Hampshire require a Manual J load calculation to obtain an HVAC permit. We prepare it so the system is designed and sized correctly for the home.
Results within 48 hours
We aim to deliver results within 48 hours. To guarantee timely completion, we ask that you provide us with advance notice on your request.
First come, first served
As a trusted service provider, we offer load calculations to ensure our customers receive the best possible results. We operate on a first-come, first-served basis.
Larger and commercial projects
We are also pleased to offer load calculation services for larger projects, including commercial Manual N calculations priced on project size.
Calculation fees
All materials must be purchased from API/Delta T.
Manual J + Manual S
$50
Manual J + Manual S + Manual D
$100
Long J (full report)
$250
Expedite fee
This service might not always be available.
$100
Commercial Manual N
Based on project size
FORM
Load Calculation Form
Fill out the load calculation request form and send it to [email protected] to get started. Include as much project detail as you can so we can turn your request around quickly.
Work with our estimating team
Whether you need a Manual J for a permit or a full commercial load calculation, our estimating team scopes the job and gets results back to you quickly. Send us your request to get started.
BILLING
These fee-based services will be billed to your account as a separate item. We will include your PO number on the invoice. If no PO number is provided, we will invoice you under the job name or address you provide.
Questions or ready to start?
If you have questions or want to learn more about these services, contact us at the number or email below.