Systems
Electrical panel replacement cost
About $2,000 to replace a panel on the service you already have, and about $5,120 if the amperage is going up — because that second job brings in the meter, the service conductors, the grounding, usually the mast and the utility. Which of the two you need is not a matter of opinion: the code has a method for it, and it is the first thing below.
Written and edited by Pablo Ruiz Quintero
Last reviewed 2026-09-21 · Nothing you type leaves your browser
First: is the service actually too small?
Almost nobody arrives here with a broken panel. They arrive with an electrician who said 100 amps will not do. That is not an opinion — the code has a method for it, and this is it. Run it before you price anything.
Heated floor area. Not the garage, not an open porch, not an unfinished basement.
On the main breaker at the top of the panel.
What is electric
Nameplate load of everything fastened in place. Gas appliances do not count — which is exactly why an all-gas house can run a kitchen on 100 amps and an all-electric one cannot.
Compressor and air handler. Counted at 100 per cent of nameplate.
Off the model number: 036 is 3 tons, 048 is 4.
What the job runs into
Three feet clear in front, thirty inches wide and to a height of six and a half feet. It is why a panel behind a shelf or in a cupboard has to move, and it is the most common reason a replacement turns into a relocation.
Overhead brings the mast and usually roof work with it. Underground does not, and it is the cheaper of the two to upgrade.
Anything else you already know about
Used only to pick a regional labour rate. It stays in your browser.
Panel replacement, same service
$1,400
99.6 A calculated · 100 A service · 0.4 A of margin
It fits — but with 0.4 amps to spare
The load calculates at 99.6 amps against 100. Nothing needs doing today and no upgrade is justified by this number alone — but there is no room left in it either. One more large load and it goes over, so if a car charger or a heat pump is anywhere in your plans, that is the decision to make now rather than twice.
The load calculation, line by line
NEC 220.82, the optional method for dwellings. This is the sheet an electrician fills in.
| Load | VA |
|---|---|
| General lighting and receptacles, 1,800 ft² | 5,400 |
| Small-appliance circuits, 2 | 3,000 |
| Laundry circuit | 1,500 |
| Electric range or cooktop | 12,000 |
| Electric dryer | 5,000 |
| Electric water heater | 4,500 |
| Dishwasher | 1,200 |
| Waste disposal | 900 |
| General total | 33,500 |
| First 10,000 VA at 100 per cent, the rest at 40 | 19,400 |
| Air conditioning, 3 ton at 100 per cent | 4,500 |
| Total ÷ 240 volts | 99.6 A |
The 40 per cent is the whole trick, and it is why a house with 34 kVA of connected load does not need a 150 amp service. Nobody runs the oven, the dryer and the water heater at the same moment, and the code says so in arithmetic.
Where the amps come from
Against your service and the standard sizes above it.
Every size, both jobs, side by side
The left column is swapping the panel on the service you already have. The right is raising the amperage, which brings in the meter, the conductors and the utility. The gap between them is the number nobody separates.
| Service | Covers your load | Panel only | Full upgrade |
|---|---|---|---|
| 100 A · yours | Yes | $1,400 | $4,520 |
| 150 A | Yes | $1,700 | $4,820 |
| 200 A | Yes | $2,000 | $5,120 |
| 320 A | Yes | $3,600 | $6,720 |
| 400 A | Yes | $4,300 | $7,420 |
Going bigger than the calculation asks for buys very little. The panel costs more, the conductors cost more, and above 200 amps most utilities want a different meter arrangement — which is why the jump from 200 to 320 is so much steeper than the one from 150 to 200.
What is in the price
- 100 A panel and breakers
Same amperage as the existing service, because the load calculation says the service is fine.$1,400
What it costs
National average. Panel, breakers, labour and permit on the service you already have. Not included: bringing old branch wiring up to code, which is what turns a quoted price into a final one.
The electrical work is priced with the labour index for your state; the equipment is not, because a panel costs what it costs. If the new capacity is for a car, the charger circuit itself is a separate job — and see the heat pump page if the new capacity is for heating, since the backup strips are the largest single load in this whole calculation.
Worth knowing
- The calculated load is 100 amps against a 100 amp service. This is the optional dwelling calculation of NEC 220.82 — the same arithmetic an electrician does before quoting, and the reason the answer is a number rather than an opinion.
- It fits, but only just — 0.4 amps of margin on a 100 amp service. Nothing has to be done today, and no upgrade is justified by this number alone. But there is no room in it either: one more large load, a car charger or a hot tub or resistance backup on a heat pump, and the calculation goes over. Worth knowing before you plan one, rather than after.
- The part nobody warns about is the calendar, not the money. The utility has to pull the meter and put it back, and in some places that is booked six weeks out. The electrician's day of work is the short half of this.
On this page — 6 sections
- 01These are two different jobs, and only one of them is expensive
- 02Whether the service is too small is arithmetic, not an opinion
- 03The way out of a service upgrade that nobody offers you
- 04What it costs, by amperage and by which job it is
- 05The panels worth replacing even when nothing is wrong
- 06What goes wrong
These are two different jobs, and only one of them is expensive
The short version
- A panel replacement is about $2,000. A service upgrade is about $5,120. They are routinely quoted as though they were the same thing.
- Whether you need the second one is a calculation, not a judgement — NEC 220.82, run in the tool above.
- A typical 1,800 ft² all-electric house lands near 100 amps. It is the car charger, the heat pump backup or the hot tub that pushes it over.
- If it goes over by a little, there is a way out the trade rarely mentions, and it costs about $800.
Nearly everybody who looks up this price has been told the same sentence: your hundred amp service isn’t going to cut it. Sometimes that is true. Often it is a reflex, and it is an expensive one, because the two jobs behind it are not close in price.
Replacing the panel means a new box, new breakers, and every existing circuit moved across to it. The supply from the street does not change. Nobody pulls the meter for longer than the day’s work, nothing outside the house is touched, and it is a day.
Upgrading the service means the utility delivers more amps than it did before. That requires a meter socket rated for it, service entrance conductors sized for it, a grounding system to current code, usually a new mast if the supply comes in overhead, a permit, an inspection, and the power company scheduling somebody to disconnect and reconnect. The panel is the smallest line on that invoice.
| What gets added when the amperage goes up | Typical | Why |
|---|---|---|
| Meter base and socket | $520 | The utility owns the meter; you own the socket it sits in, and a bigger service needs a bigger one. |
| Service entrance conductors | $750 | The cable from the meter to the panel, sized to the new amperage. Longer runs cost more, and a run through a finished wall costs much more. |
| Riser or mast | $700 | On an overhead service, the pipe up through the eaves. It usually has to be replaced with the conductors, and it usually means roof work. |
| Grounding electrode system | $400 | Two ground rods and a bonded water pipe, to current code. Old houses frequently have one rod or none, and it is brought up to date whether you planned to or not. |
| Utility coordination and disconnect | $400 | Somebody has to pull the meter and put it back. Some utilities do it free, some charge, and some take six weeks — that lead time is the part nobody warns you about. |
| Permit and inspection | $350 | Always required for service work, and the inspector will look at the grounding and the working clearance in front of the panel. |
| Added to the panel itself | $3,120 | Which is why the same panel costs twice as much when the service behind it changes. |
MaterialsEstimator, Residential electrical service and panel price survey · checked 2026-09-21
Whether the service is too small is arithmetic, not an opinion
This is the part almost no price page carries, and it is the only part that can tell you whether to spend the money. The National Electrical Code gives a method for turning a house into a number of amps. Article 220 has two; the one used on dwellings is the optional calculation in 220.82, and it is what an electrician fills in before quoting.
It has three parts.
- 01Add up the general loadThree volt-amps for every square foot of living space, 1,500 for each kitchen counter circuit, 1,500 for the laundry, and then the nameplate rating of everything fastened in place — range, dryer, water heater, dishwasher, disposal, and anything else that is wired rather than plugged in.
- 02Apply the demand factorThe first 10,000 volt-amps count in full. Everything above that counts at 40 per cent. This is the code saying out loud that nobody runs the oven, the dryer and the water heater at the same moment, and it is the step that makes the whole thing work.
- 03Add the larger of heating or coolingNot both — they do not run together. Air conditioning at 100 per cent of nameplate, a heat pump as the compressor at 100 plus its backup strips at 65, resistance heating at 65. Then divide the total by 240 volts, and that is your number.
Run it on an ordinary house and the result is quietly surprising. Eighteen hundred square feet, electric range, electric dryer, electric water heater, dishwasher, disposal and three tons of air conditioning comes to just under 100 amps — the service that house almost certainly already has, and which somebody may well have told its owner was inadequate.
Add a level 2 car charger and it goes to about 116, and now the service genuinely is the constraint. That is the whole shape of this decision: it is rarely the house that is too big for the service. It is one appliance.
3 VA
Per square foot
General lighting and receptacles
40%
Above 10 kVA
The demand factor that makes it fit
9,600
Volt-amps, a level 2 charger
The single load that tips most houses
100 A
Code minimum for a dwelling
NEC 230.79 — nothing smaller is legal new
National Fire Protection Association, NFPA 70, National Electrical Code — Article 220, Branch-Circuit, Feeder and Service Load Calculations (2023) · checked 2026-09-21
The way out of a service upgrade that nobody offers you
If the calculation lands a few amps over, there is an answer that costs a fraction of an upgrade and is explicitly permitted by the code. It is worth knowing about before you sign anything, because you will usually have to raise it yourself.
A device that sheds or shares a large load — usually the EV charger — when the rest of the house is drawing hard. Because the load can no longer coincide with everything else, it stops being counted at full value, and a service that was over the line on paper is no longer over it. It is explicitly recognised by the code, it costs a fraction of a service upgrade, and almost nobody selling panels mentions it.
The logic is straightforward. A car charger is a huge load that is also completely indifferent about when it runs. If a device can guarantee the charger backs off while the oven and the dryer are going, then the charger is no longer a load that has to be added at full value — and the calculated figure drops below the service rating. The house is not short of capacity. It was short of coordination.
| Load management device | Service upgrade to 200 A | |
|---|---|---|
| Typical cost | $800 | $5,120 |
| Utility involved | No | Yes — and it sets the schedule |
| Lead time | Days | Weeks, sometimes months |
| Works when | The calculation is over by roughly one large load | Any amount over |
| Adds real capacity | No — it shares what you have | Yes |
| Who suggests it | Almost nobody | Everybody |
There is a second lever in the same place, and it is cheaper still: change the appliance rather than the service. A heat-pump water heater takes roughly 3,000 volt-amps out of the calculation compared with a tank one, and a heat-pump dryer takes another 5,000 and runs off an ordinary outlet. Between them that is about three amps of calculated demand after the 40 per cent factor — occasionally the exact difference between needing an upgrade and not, and always cheaper than one.
What it costs, by amperage and by which job it is
Prices below are installed, with labour at the national average; the calculator adjusts labour for your state and equipment stays flat, because a panel costs what it costs wherever it is sold.
| Service | Panel only | Range | With the amperage change |
|---|---|---|---|
| 100 A | $1,400 | $900–2,100 | $4,520 |
| 125 A | $1,550 | $1,000–2,300 | $4,670 |
| 150 A | $1,700 | $1,100–2,500 | $4,820 |
| 200 A | $2,000 | $1,300–3,000 | $5,120 |
| 225 A | $2,300 | $1,500–3,400 | $5,420 |
| 320 A | $3,600 | $2,400–5,200 | $6,720 |
| 400 A | $4,300 | $2,900–6,300 | $7,420 |
Two things to read out of that table. The step from 150 to 200 amps is small — a couple of hundred dollars of panel — which is why 200 is the default recommendation and why it is usually the right one when an upgrade is happening anyway. The step from 200 to 320 is not small, because above 200 amps most utilities want a different meter arrangement entirely, and that is a different class of job.
And the fourth column is the one to hold on to. It is the same panel in both cases. The difference is entirely outside the box.
What turns a quoted price into a final one
- The working clearance in front of the panel — 36 in deep, 30 wide. A panel in a cupboard or behind shelving has to move.
- Arc-fault breakers where current code wants them, at roughly five times the price of a plain one.
- The grounding electrode system brought to code, which in an older house usually means a second ground rod.
- Branch circuit conductors too short to reach the new breaker positions, each needing a junction and an extension.
- Knob-and-tube or cloth-insulated wiring discovered once the cover is off, which is not a panel cost but is found at the panel.
- Whole-house surge protection, required on service replacements under the 2020 code onwards.
- The utility's own charge for disconnecting and reconnecting, which some waive and some do not.
- Drywall repair where the panel moved or the conductors were chased, which is frequently somebody else's trade and nobody's quote.
National Fire Protection Association, NFPA 70, National Electrical Code — service equipment, working space and panel replacement (2023) · checked 2026-09-21
The panels worth replacing even when nothing is wrong
Everything above assumes the panel is doing its job. Two brands, installed in millions of American homes, have a documented history of not doing it — and this is the one case where replacing a panel that appears perfectly healthy is a reasonable decision rather than an upsell.
Federal Pacific Stab-Lok breakers have been found in testing to fail to trip under fault conditions at a rate no other brand approaches. Zinsco breakers have a related failure mode in which the bus connection degrades and the breaker can no longer interrupt the circuit it is attached to. A breaker that will not trip is not a lesser breaker; it is a piece of equipment that has stopped performing the single function it exists for.
Neither was ever recalled. Both are still energised in a very large number of houses, and both are increasingly flagged by home inspectors and, in some markets, by insurers. If you have one, the case for replacement does not depend on the load calculation at all — and it is a panel replacement, not a service upgrade, so it sits at the lower end of the prices above.
One more, unrelated to brand: a panel with rust on the bus bars or water staining inside the cabinet. Water and a live bus do not coexist indefinitely, and corrosion at a breaker connection is a heat problem before it is anything else. That panel is replaced on condition, whatever the calculation says.
What goes wrong
01Accepting that 100 amps is not enough without running the numbers
A 1,800 ft² house with an electric range, dryer, water heater and central air calculates at just under 100 amps under NEC 220.82. The sentence is a reflex as often as it is a finding.
Instead — Run the calculation first. If it fits, you are buying a panel — a day's work — and not a service upgrade at twice the price.
02Comparing two quotes that are not for the same job
One includes the meter base, conductors, mast, grounding and permit; the other does not. The cheaper one is not cheaper, it is smaller, and the difference reappears as a change order.
Instead — Ask each one, item by item, whether those six things are in the price. They come to roughly $3,120 between them.
03Upgrading the service to take an EV charger without asking about load management
The charger is the one load a device can legitimately shed, and the code lets the reduced figure be used. It is very rarely offered because it sells less than a panel.
Instead — Ask specifically. Around $800 against several thousand, when the calculation is over by roughly one charger's worth.
04Going to 400 amps for headroom
Above 200 amps most utilities want a different meter arrangement, so the price step is far larger than the one below it — and a house calculating at 140 amps gets nothing from 400.
Instead — Two hundred amps is where price and capacity are best matched on a normal house. Buy the size the calculation asks for.
05Not measuring the space in front of the panel
NEC 110.26 wants 36 inches clear, 30 wide. A panel that has acquired a shelf, a cupboard or a washing machine in front of it fails, and the inspector will not sign it off.
Instead — Measure before anybody quotes. If it has to move, that is a known extra rather than a surprise on the day.
06Skipping the permit
The inspection is what catches the grounding and the clearance — the two items most often quietly left out. Unpermitted service work also surfaces at sale and can hold up a closing.
Instead — Insist the permit is in the price, and get the signed inspection card. It is a few hundred dollars and it is the only third party looking at the work.
07Treating a Federal Pacific or Zinsco panel as fine because it has never tripped
Never tripping is precisely the failure mode. A breaker that does not trip under fault has stopped doing the only thing it is for, and neither brand was ever recalled.
Instead — Replace it on condition, independently of the load calculation. It is a panel replacement rather than a service upgrade, so it is the cheaper of the two jobs.
08Booking the electrician before asking the utility
The meter has to be pulled and reconnected by the power company, and in some areas that appointment is six weeks out. The electrician's day is the short half of this.
Instead — Ask about the utility's lead time first, then book the work to land after it. It is the single most common reason a two-day job takes two months.
- 01Read the main breakerThe big one at the top of the panel has its rating stamped on the handle: 100, 150, 200. That is your service, and it is the number everything else is measured against.
- 02Run the load calculationSquare footage, kitchen circuits, laundry, everything fastened in place that is electric, then the larger of heating or cooling. The calculator above does it by NEC 220.82.
- 03Compare the two numbersIf the calculated load fits inside the service, nobody needs to touch the meter or the utility, and you are pricing a panel — not an upgrade.
- 04If it does not fit, find out by how muchA few amps over is a load management problem. Thirty amps over is a service problem. They cost very different money.
- 05Measure the space in front of the panel36 inches clear, 30 wide. If it has been built in, relocation is coming whether you wanted it or not.
- 06Ask each quote which items it includesMeter base, service entrance conductors, mast, grounding, permit, utility coordination. A quote that is half another one is usually missing several of these rather than being cheaper.
- 07Ask the utility about lead time before you bookSomebody has to pull the meter and put it back. In some places that is six weeks out, and it is the part of the schedule the electrician does not control.
The backup resistance strips on a heat pump are the largest single load in this entire calculation — larger than the range. That page sizes the system properly and shows what the strips actually cost to run, which is also what decides how much of them you need.
If the new capacity is for heating- Service
- The supply from the utility to the house, rated in amps. It is the conductors, the meter and the main breaker together — not the box on the wall, which is why 'upgrading the panel' and 'upgrading the service' mean different things and cost different money.
- Load calculation
- The arithmetic that turns a house into a number of amps. NEC Article 220 gives two methods; the optional one in 220.82 is what is used on dwellings, and it is what the calculator above runs.
- Demand factor
- The code's recognition that nothing runs at once. In the optional method the first 10,000 volt-amps count fully and everything above counts at 40 per cent, which is why a house with 43 kVA connected does not need a 180 amp service.
- Volt-amp
- Volts times amps, the unit loads are added in before being divided by 240 to get amps. For resistive loads it is the same as a watt; it is used instead of watts because motors draw more current than their wattage suggests.
- Service entrance conductors
- The cable from the meter to the main breaker. It is sized to the service amperage, so raising the amperage always means replacing it — and that single item is a large part of why an upgrade costs twice a swap.
- Meter base
- The socket the utility's meter plugs into. The utility owns the meter; you own the socket, and a larger service needs a larger one.
- Mast
- The pipe carrying an overhead service up through the eaves to the point of attachment. It usually has to be replaced along with the conductors, and it usually means work on the roof — which is why an underground service is cheaper to upgrade.
- Working space
- The 36 inches of clear floor in front of a panel, 30 wide and 78 high, required by NEC 110.26. A panel that has lost it has to move, and that is the commonest way a simple job stops being simple.
- Load management
- A device that sheds or throttles a large load when the rest of the house is drawing hard. The code lets the reduced figure be used in the calculation, which is how a 100 amp service legally takes a car charger it could not otherwise take.
- AFCI
- Arc-fault circuit interrupter. A breaker that watches for the signature of arcing in damaged wiring. Current code wants them on most circuits, they cost five times a plain breaker, and a new panel is where that cost lands.
- Grounding electrode system
- The rods, plates and bonded metal water pipe that tie the system to earth. Old houses often have one rod where two are now required, and replacing a panel brings it up to date whether it was in the quote or not.
- Stab-Lok
- Federal Pacific's breaker design, sold into millions of American homes and subsequently found to fail to trip at a rate no other brand approaches. Not recalled, still energised in a great many houses, and a genuine reason to replace a panel that is working perfectly well.
Common questions
- How much does it cost to replace an electrical panel?
- About $2,000 to put a new 200 amp panel on a 200 amp service — a day's work, the panel, the breakers and the permit. Around $5,120 if the service amperage is going up as well, because that brings in the meter base, the service entrance conductors, the grounding, often the mast, and the utility. Those are two different jobs and almost every price you will read online blends them into one number.
- How much does it cost to replace a breaker box?
- The same job under a different name: the breaker box is the panel. Between $900 and $3,000 for a like-for-like replacement depending on the amperage and the region. What moves it is not the box — it is whether the service behind it is changing, and whether the old branch wiring can simply be landed on the new breakers.
- Do I really need a 200 amp service?
- Run the calculation before you accept that you do. A 1,800 square foot house with an electric range, dryer, water heater and 3 tons of air conditioning calculates at almost exactly 100 amps under NEC 220.82 — the service it already has. The things that genuinely push a house over are a car charger, a heat pump with resistance backup, or a hot tub. If none of those is in your plans, the case for 200 amps is convenience, not necessity, and it is worth knowing which one you are paying for.
- What is the difference between a panel replacement and a service upgrade?
- A panel replacement changes the box, the breakers and the wiring inside it, on the supply you already have. A service upgrade changes how many amps the utility delivers, which means a new meter base, new service entrance conductors sized to the new rating, updated grounding, usually a new mast on an overhead service, a permit, and the utility disconnecting and reconnecting. The panel is about $2,000 of the roughly $5,120 that second job costs. Anybody quoting you a single figure without saying which of the two it is has not looked at your house.
- Will an EV charger mean I need a new panel?
- Often, but not always, and the exception is worth money. A level 2 charger is 9,600 volt-amps of continuous load, which after the 40 per cent demand factor adds about 16 amps to the calculation. On a 100 amp service that is frequently the thing that tips it over. But the code recognises load management: A device that sheds or shares a large load — usually the EV charger — when the rest of the house is drawing hard. That device is around $800 against several thousand for a service upgrade, and it is very rarely offered — because it sells less than a panel.
- How long does replacing an electrical panel take?
- The electrical work is a day, occasionally two if the old wiring is short and every circuit needs extending. The schedule is set by the utility, not the electrician: the meter has to be pulled and reconnected, and that appointment can be weeks out. Power is off for most of the working day, which matters if anybody in the house depends on it.
- Do I need a permit to replace an electrical panel?
- Yes, everywhere, and it is not the corner to cut. The inspection is what catches the two things people are quietly sold short on: the grounding electrode system, which old houses rarely have to current code, and the working clearance in front of the panel. Unpermitted service work also surfaces at sale and can hold up a closing.
- Is a Federal Pacific or Zinsco panel dangerous?
- Both have a documented history of breakers that fail to trip under fault conditions, which defeats the one thing a breaker exists to do. Neither was recalled, and both are still energised in a great many houses. This is the case where replacing a panel that appears to be working perfectly well is a reasonable thing to do — and where home inspectors and insurers increasingly force the issue.
- Can a panel be replaced without upgrading the service?
- Yes, and it is the cheaper of the two jobs by a wide margin. A full panel, a rusted one, one with no room for another breaker, or a recalled brand are all good reasons to replace the box while leaving the service alone. If the load calculation says the existing amperage covers the house, the utility need never be involved.
- Why is my quote so much higher than the prices online?
- Usually one of four things, and it is worth asking which. The service amperage is going up, which adds roughly $3,120 of meter, conductors, mast, grounding and permit. The panel has lost its working clearance and has to move. The house has knob-and-tube or cloth wiring that cannot simply be landed on new breakers. Or the new panel needs arc-fault breakers throughout, which cost five times a plain one.
- How many amps does my house actually use?
- Far less than the calculation, and that is deliberate. The NEC method is not a measurement of consumption — it sizes for the worst plausible coincidence of loads, with a demand factor acknowledging that nothing runs at once. A typical house rarely draws more than 30 or 40 amps at any moment. The service is sized so it is never the limit, not so it matches your bill.
- Should I go to 400 amps while I am at it?
- Almost certainly not on a normal house. Above 200 amps most utilities want a different meter arrangement, which is why the jump from 200 to 320 is far steeper than the jump from 150 to 200 — and a house that calculates at 140 amps gets nothing at all from 400. If you want headroom, 200 amps is where the price and the capacity are best matched.
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About the author
Pablo Ruiz Quintero — Editor
Editor of MaterialsEstimator. Decides which documents count as a source, what every default value is, and where the line sits between what the reader parses and what the engines compute.
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