Cost & Quoting

Cost Per Unit and Quoting for Appliance, HVAC, and White Goods Production

A money-first breakdown of what actually drives cost per appliance or HVAC unit, how to assemble a quote that holds up, and the hidden costs that wreck margins.

In white goods, material is 55 to 70 percent of factory cost, so quotes live or die on the bill of materials. For a mid-tier refrigerator, expect roughly 8 kg of prepainted and galvanized steel, 4 to 6 kg of ABS and HIPS plastics, 0.9 to 1.3 kg of copper and aluminum in the sealed system, plus the compressor as a bought-in component at 22 to 34 dollars. Price each line at landed cost including freight and duty, then add a scrap uplift. Steel bought at 1,050 dollars per ton but yielded at 83 percent costs 1,265 dollars per usable ton, and that gap must sit in the quote.

Labor is smaller than material but easier to underquote. Direct assembly labor for a refrigerator runs 18 to 35 minutes of touch time depending on automation; at a fully loaded rate of 22 to 40 dollars per hour that is 7 to 23 dollars per unit. Use the Appliance Assembly Labor Calculator and the HVAC Unit Assembly Cost Calculator to convert measured work content into cost, and always quote loaded labor, not base wage. A 26 dollar per hour base becomes 38 to 42 dollars loaded once you add payroll tax, benefits, paid downtime, and supervision at typical burden multipliers of 1.45 to 1.6.

Machine and line time gets costed by allocating a station or cell rate to cycle time. If a blanking press cell costs 95 dollars per hour to own and run and it produces one cabinet blank every 12 seconds, machine cost per cabinet is 95 / 3600 x 12 = 0.32 dollars. The Compressor Line Capacity Calculator and Final Assembly Takt Capacity Calculator matter here because unabsorbed capacity is pure loss: a line rated for 1,200 units per shift but selling 900 spreads the same fixed cost over fewer units, raising per-unit overhead by 33 percent.

Scrap and rework are the quiet margin killers. Sheet metal skeleton scrap at 15 to 20 percent is partly recoverable at scrap-steel value near 250 dollars per ton, so net it against gross scrap. Refrigerant is not recoverable once vented: a 3 percent overcharge tolerance on a 78 gram R32 charge wastes about 2.3 grams, and across 500,000 units at 12 dollars per kg that is 13,800 dollars. Use the Refrigeration Charge Cost Calculator and Coil Manufacturing Cost Calculator to hold these to real tolerances rather than padding the quote with a flat 5 percent guess.

Warranty reserve belongs in the unit cost, not in a separate P&L line you forget at quote time. Reserve per unit equals expected field failure rate times average repair cost. At a 2.5 percent first-year claim rate and a 140 dollar average repair including labor, truck roll, and part, that is 3.50 dollars per unit set aside. The Appliance Warranty Reserve Calculator lets you flex this by product; a compressor-heavy failure mode on a new platform can push reserve to 6 to 9 dollars until field data proves the design, and buyers expect to see that line justified.

Overhead allocation is where two honest estimators produce quotes 15 percent apart. Decide up front whether you burden by labor hour, machine hour, or unit, and stay consistent. A plant with 42 million dollars of annual overhead and 900,000 units allocates 46.70 dollars per unit on a simple basis, but a machine-hour basis will load a coil line differently than a hand-assembly cell. Test stand and leak test capacity feed this: the HVAC Test Stand Utilization Calculator and Leak Test Workload Calculator show whether test overhead is spread over 96 percent utilization or a wasteful 60 percent.

Build the quote as a stack you can defend line by line: material net of recoverable scrap, loaded direct labor, allocated machine time, warranty reserve, then overhead, then margin. For a typical mid-tier fridge the stack lands near 165 to 210 dollars factory cost, and a 12 to 18 percent margin sets the transfer or wholesale price. Show the customer the stack. A quote that itemizes 8.06 kg of steel and 78 grams of R32 survives a purchasing challenge; a single lump number gets negotiated down every time.

The three most common estimating errors: quoting net material instead of purchased material, so you eat the yield gap; using base wage instead of loaded labor, understating cost 40 to 60 percent; and omitting warranty reserve, which looks like profit for a year then vanishes. A fourth is costing at rated line capacity when you sell below it, hiding unabsorbed overhead. Run the Cabinet Sheet Metal Yield Calculator and Appliance Warranty Reserve Calculator before you sign, and rebuild the quote whenever steel, copper, or refrigerant prices move more than 5 percent.

Published 2026-07-01.