Project cost · modeled example

Heat Pump Water Heater Cost: The 50-Gallon Swap, Itemized (2026 Baseline)

A 50-gallon electric tank swapped for a hybrid heat pump unit: removal, the unit, connections and the condensate run, itemized with crew hours.

Direct answer: Swapping a 50-gallon electric tank for a heat pump water heater has a direct job cost of $3,106 for this like-for-like swap in this example. At illustrative markups of 30% to 100%, that is a selling price of about $4,037 to $6,211. Direct job cost is labor and materials only, with no contractor overhead or profit, and is not a price: no contractor performs work at job cost. Permit and inspection fees are not included.
Clamp's Generate from description screen with the water heater swap described in plain words

Describe it

The water heater estimate in Clamp's builder: total $3,105.50, grouped into appliances, HVAC and plumbing

Every line, by trade

The swap in the Clamp app: described in plain words, then the draft at $3,105.50 job cost, every line grouped by trade. Sample data.

The job at a glance

One build, fully itemized, with crew hours.

BuildJob costLaborCrew hoursMaterialsIllustrative selling price
A. 50-gallon heat pump swap$3,106$1,1405 to 10 h$1,901$4,037 to
$6,211

Dump fees and other costs ($65) are the same in every build and included in the job cost. Materials include allowances. Illustrative selling price is the job cost at a 30% to 100% markup; your price depends on your own overhead and profit. Labor hours are a planning range and include setup, daily cleanup and material runs; they are never a charge to the customer. Permit and inspection fees are not included; requirements vary by jurisdiction.

The build in detail

A. 50-gallon heat pump swap: $3,106

The old electric tank is drained, removed and recycled; the hybrid unit is set in the same spot, strapped, connected, and its condensate is run about six feet to the existing floor drain. Labor is $1,140 of the $3,106 job cost, or 36.7%. It is about 5 to 10 hours of work, including setup, daily cleanup and material runs.

Labor cost by trade

Labor only. Materials, allowances and dump fees are in the line items below. Hours are person-hours at typical production from Clamp’s labor hours catalog, as a range: a planning figure, not a schedule and not a charge to the customer.

TradeHoursLabor costLow-Overhead×1.30Established×1.50Full-Service×2.00
Plumbing3 to 9 h$1,020$1,326$1,530$2,040
HVACunder 1 h$120$156$180$240
Setup, cleanup and material runs1 to 2 hin the prices
All labor5 to 10 h$1,140$1,482$1,710$2,280

Every line item

Labor $1,140 + materials and allowances $1,901 + dump fees and other $65 = $3,106 direct job cost. Hours are person-hours at typical production, on labor rows only, and the direct-cost row adds about 15% for setup, daily cleanup and material runs; an allowance or material row names the labor line that installs it, and a subcontract row has none, because the sub’s price includes their own time. Some labor quantities include a difficulty factor, so they can exceed the measured area; each row’s derivation is in the downloadable data.

ItemQtyUnitHoursLaborMaterialLine cost
Plumbing
DWV Materials6lf$0$38$38
Heat Pump Water Heater AllowanceLabor on: Heat Pump Water Heater Install1ea$0$1,800$1,800
Water Heater Connection Kit1ea$0$63$63
Heat Pump Water Heater Install1ea3 to 9 h$1,020$0$1,020
Plumbing subtotal3 to 9 h$2,921
Plumbing subtotal3 to 9 h$2,921
HVAC
Condensate Drain Install1eaunder 1 h$120$0$120
HVAC subtotalunder 1 h$120
HVAC subtotalunder 1 h$120
Appliances
Appliance Haul-Away and Recycling1ea$0$0$65
Appliances subtotal$65
Appliances subtotal$65
DIRECT JOB COST5 to 10 h$3,106
DIRECT JOB COST5 to 10 h$3,106

Methodology & reproducibility

One reviewed snapshot for this build. The build is frozen from its own estimate run and priced by the published pricer.

Direct cost equals the sum of each row’s rounded quantity × (labor + material + other). Amounts are shown in whole dollars; every column adds to its total.

Scope selection, prose accuracy, arithmetic and provenance mapping reviewed; not independent market-rate verification.

Questions

Why is the unit most of the cost?

The unit allowance is $3,106 minus roughly a day of licensed plumbing labor. A hybrid heat pump unit costs far more than a standard electric tank; utility rebates, where they exist, come off the selling price, not the job cost.

What can push this job higher?

A closed plumbing system that needs an expansion tank, a room too small for the unit's air volume (a louvered door or duct kit), a panel without capacity, or a long condensate run with a pump. Each is its own line when it is found.

Is the markup on top of this?

Yes. Direct job cost is what the swap costs a contractor to perform. The markup table shows what it sells for at illustrative markups of 30% to 100%.

Related

Sources & provenance

  1. 50-gallon heat pump swap reviewed snapshot Clamp Research
Changes: Oct 11, 2026: Initial publication: reviewed snapshots frozen from saved estimate runs, priced on the current baseline.; Oct 11, 2026: Line items open with trade subtotals and hours, matching the 5x8 page.