Heat Load & SEER2 Savings Calculator

Simplified ASHRAE Manual J cooling-load calc with Goodman / Daikin tier comparison. Saved reports attach to the customer profile as a PDF.

Customer · Address

Job Info

Calc label

Sq Ft ↓

Drives roof, wall, slab estimates

Ceiling Ht (ft)

¢/kWh Rate

FL avg ~13¢

Cooling Hrs/Yr

Tampa avg ~3,500 hrs

Climate · Home Conditions

Outdoor °F

Tampa: 94°F

Outdoor RH %

Tampa: 70-80%

Indoor °F

Client target temp

Indoor RH %

Comfortable: 45-55%

Occupants

250 sens + 200 lat BTU/person

Roof Color

Walls and Windows

Wall Type

Wall Area ft² auto

Wall U-Value

R = 1/U

Wall CLTD

Frame ~25, CBS ~30

Area ft²

U-Factor

SHGC

North

South

East

West

Standard double-pane FL: U-0.55, SHGC-0.40 · Low-E: U-0.30, SHGC-0.22 · Single pane: U-1.0, SHGC-0.86

▸ Compare Scenarios

Current Setup

Attic R-Value

Thin blown or bare: R-3 to R-7

Existing System Rating

AC systems lose ~5%/yr without maintenance. A 14-SEER unit after 10 yrs ≈ 8.6 SEER.

Installed System Size (Tons)

Actual unit on site right now

Proposed Upgrade

Proposed Attic R-Value

Code min R-30, recommended R-38+

New System SEER2

New efficient systems: SEER2 16–22+

Equipment selection

System Type

Orientation

Investment · Financing

Total Job Cost ($)

Auto-fills when you pick a tier; editable for labor/insulation/markup.

Financing Term *if you qualify

12.99% APR with autopay

Est. Monthly Payment

GoodLeap autopay rate · estimate only

Simplified ASHRAE Manual J. Not a substitute for a full ACCA Manual J for permit submittals. Equipment prices are loaded from the htt source; live price-book wiring lands in a follow-up PR.