Dedicated Circuit Installation Cost: Refrigerator, Microwave & More
A dedicated circuit costs $250 – $900 installed: a new breaker, a cable run from the panel, and a single outlet that serves one appliance alone. The price is set almost entirely by the distance from your panel to the appliance and how open the wall path is. This page covers both halves of the question: which appliances code requires a dedicated circuit for, and what installing one costs.
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| Appliance | Installed range | Circuit |
|---|---|---|
| Refrigerator | $250 – $700 | 20A; often a short kitchen run |
| Microwave (built-in / OTR) | $300 – $800 | 20A; above the range, longer fish |
| Dishwasher | $300 – $800 | 15A or 20A; under-counter access |
| Garbage disposal | $300 – $800 | 15A or 20A; switched circuit |
| Laundry (washer) | $300 – $800 | 20A required by code for laundry |
| Long run / finished walls | $600 – $900+ | Distant appliance, closed wall path |
| Line item | Typical cost | Notes |
|---|---|---|
| Breaker (15A or 20A) | $10 – $50 | Single-pole, sometimes AFCI or GFCI |
| Receptacle | $2 – $15 | Standard or specialty outlet |
| Wire / cable | $1 – $4 per ft | 12-gauge for 20A circuits |
| Electrician labor | $150 – $500 | Fishing cable is the main variable |
| Permit and inspection | $50 – $150 | New circuit, usually required |
| Drywall patch (if needed) | $50 – $200 | When walls must be opened |
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What a dedicated circuit is, and why it matters
A dedicated circuit runs from its own breaker in the panel to a single outlet that powers one appliance and nothing else. Nothing else shares the wire. The point is to keep a heavy or motor-driven appliance from overloading a circuit it shares with lights and other outlets, which is what causes a breaker to keep tripping and, in the worst case, overheated wiring.
Appliances that cycle a motor or a heating element (a compressor, a disposal, a microwave magnetron) draw a hard surge of current each time they start. On a shared circuit, that surge plus whatever else is running can exceed the breaker rating. A dedicated circuit gives the appliance the full ampacity it was designed for, which is both a code requirement for many appliances and a reliability upgrade for the rest. Our explainer on what a dedicated circuit is covers which appliances genuinely need one.
Which appliances need a dedicated circuit by code
Modern NEC editions require dedicated or specific circuits for a defined list of appliances. Your jurisdiction's adopted code edition governs the exact requirements, and a permitted job follows it. In broad terms, these are the appliances that need their own circuit in current code:
Large 240V appliances (electric range, dryer, water heater, AC, EV charger) always get their own circuit, but those are covered on separate pages. The list below is the common 120V dedicated circuits that come up in kitchen and laundry work.
- ·Refrigerator: a dedicated 20A circuit is standard practice and required in many editions
- ·Microwave (built-in or over-the-range): dedicated 20A
- ·Dishwasher: dedicated circuit (15A or 20A), often GFCI-protected now
- ·Garbage disposal: dedicated, switched circuit
- ·Laundry (washer): a dedicated 20A laundry circuit is required by the NEC
- ·Kitchen countertop receptacles: at least two 20A small-appliance circuits
- ·Bathroom receptacles: a dedicated 20A circuit serving bathroom outlets
Why two identical appliances can cost very differently
A dedicated circuit for a refrigerator can land at $250 if the fridge backs up to a wall near an open basement directly below the panel, where the electrician drops a cable straight down and up. The same circuit can hit $700 or more if the kitchen is on the far side of the house from the panel, on a slab with no crawl access, or behind finished walls that have to be opened and patched. The appliance is the same; the path to the panel is not.
This is why the search numbers vary so widely. A microwave above the range usually needs more cable fished up through cabinetry than a fridge does, which is why over-the-range microwave circuits skew higher; sharing instead of dedicating is a common reason a microwave keeps tripping the breaker. When you get quotes, the honest comparison is the cable run length, the wall access, and whether drywall patching is included, not the appliance name.
Panel capacity and bundling
Every dedicated circuit needs an open breaker slot. If your panel is full, the electrician may add a tandem breaker (where allowed), a sub-panel, or recommend a panel upgrade, which is a separate $1,500 – $4,000 project. During a kitchen remodel, several dedicated circuits go in at once, and a near-full panel is a common reason a remodel touches the panel.
The way to control cost is to bundle. Running one dedicated circuit on a dedicated trip is the worst value because the trip charge and permit ride on a single outlet. Adding the fridge, microwave, dishwasher, and disposal circuits in one visit, ideally while walls are already open during a remodel, drops the marginal cost of each circuit substantially compared with four separate visits.
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