Load, equipment and service plans. One app.
Size the equipment from the house, count the parts of the install, and keep the client’s equipment on a service plan. The HVAC Sheet works out a rough load as a cross-check before your Manual J, then lists the equipment, ducts, registers and line set, priced from your price book.
What HVAC contractors get
- Heating and cooling sizing: a gas furnace with central AC, a ducted heat pump (standard or cold-climate) or ductless mini-splits, new or reused ducts in flex or sheet metal, with the supplies, returns, line set, pad or wall bracket and thermostat.
- Equipment and service plans: the furnace, AC, water heater or panel a job’s Sheets describe is ready to add to the client’s equipment. A service plan sets the recurring visits and the checklist, and a QR label on the unit shows its last and next service and how to book you.
- Licensed work stays licensed: homeowners see the HVAC Sheet stamped PRO JOB, with what’s involved and quotes from pros. Contractors get the full Sheet.
From the hvac Sheet: 2000 sq ft, furnace + AC
2000 sq ft, furnace + AC: a rough heat loss of 37,200 BTU/h and heat gain of 26,100 BTU/h, a cross-check before the room-by-room Manual J.
| Buy | Item | How StudSheet counts it |
|---|---|---|
| 1 furnace | Gas furnace, 40,000–45,000 BTU/h | Output ≈ 38,000 BTU/h (95% of input) for the 37,200 BTU/h heat loss: 102%. |
| 1 unit | AC condensing unit, 2.5–3 ton | 26,100 BTU/h heat gain ÷ 12,000 = 2.17 tons → 2.5 tons. |
| 1 coil | Evaporator coil, up to 3 ton | An AHRI-matched coil and condenser pair is what the efficiency rating (and many rebates) count. |
| 1 set | Line set (insulated copper pair) | Coil to outdoor unit about 32 ft (across to the wall, out, to the unit, service loops). Factory charge covers about 15 ft: add about 10 oz (the R-410A figure; A2L units list theirs on the data plate). The unit’s instructions set the sizes. |
| 1 drier | Liquid-line filter drier | If the outdoor unit doesn’t ship with one. |
The Sheet has 43 lines like these, each with its math. Change a size and every line follows; on a job, each line takes your price. The whole worked example · Open the hvac calculator
Questions
How many tons of AC for a 2,000 sq ft house?
It depends more on the house than the square feet, which is why “500 sq ft per ton” rules oversize so many systems. For the HVAC Sheet’s worked example, a 2,000 sq ft house in New Jersey, the rough load works out to about 37,200 BTU/h of heat loss and 26,100 BTU/h of heat gain: a 40,000 BTU/h furnace and a 2.5-ton AC. That is a planning number; size the equipment from a room-by-room Manual J. Open the HVAC Sheet to see each step of the math.
Does the Sheet replace a Manual J?
No. Its load is a planning number from the floor area, the climate zone, the insulation, the windows and the sun. Size the equipment from a room-by-room ACCA Manual J, select it with Manual S and lay out the ducts with Manual D; the Sheet’s steps say so.