Sunhomes
Manual J LoadCalc

Size the HVAC from the house, not the square footage.

Room-by-room Manual J loads from your plan set PDF, in about 10 minutes.

3 free reports, then $50 each. No card.

Start a free reportSee the sample report

Have ready: one PDF of the plan set (up to 200 MB, 120 sheets) with floor plans, elevations and window sizes.

The sample report: Lot 308's two floor plans with every room traced and its heating load in Btu/h

Calculated by AI; not ACCA approved. Suggested size from the loads; not a Manual S selection. For a permit I review and sign reports as a paid add-on, quoted first. Questions? Ask me.

Want this done right on your house?

Start wherever you are. Each step stands on its own.

$150 / hourTalk it through with AlanSolar and battery sizing, HVAC, backup power, automation. Anywhere in the US, by video call.Design packageAlan designs the systemA complete design your builder or electrician can build from.BuildAlan builds itUtah, Southern Nevada and Northern Arizona, as sub or GC, when schedule and fit allow.