Get in touch with the Load Calc Guru team
Questions about the online Manual J HVAC load calculator, billing, feature ideas, or our white-glove Manual J service? Use the form below or reach out directly and we'll get back to you as soon as we can.
Ways to reach us
Choose the option that best fits your question about Manual J load calculations, your account, or project-specific support.
General & support
help@loadcalcguru.com
Product questions, bug reports, account and billing.
White-glove Manual J service
whiteglove@loadcalcguru.com
Project-based Manual J HVAC load calculation requests.
Learn about the Manual J serviceWhere we operate
Load Calc Guru is a remote-first team serving HVAC pros across North America.
We focus on residential Manual J HVAC load calculations for contractors, designers, energy professionals, and homeowners.
Typical response time
Within four to five business days.
During busy seasons, Manual J service quotes and complex support requests may take slightly longer.
Just getting started with Manual J?
Load Calc Guru is an online Manual J HVAC load calculator that lets you run residential heating and cooling load calculations in minutes—room-by-room heat loss and heat gain, sensible and latent loads, and clean reports.
If your question is about how to use the software, it's often fastest to create a free account and try a test project while you write to us.
Send us a message
Use this form for general questions about the Load Calc Guru Manual J calculator, account and billing issues, or feedback on how we can make residential HVAC load calculations easier for you.
Prefer to write from your own email client? You can always reach us at support@loadcalcguru.com or whiteglove@loadcalcguru.com for Manual J service questions.