Generator Repair Near Me: $150 to $300 Service Call and Up
Generator repair starts with a service call minimum of $150 to $300 or more, and parts run $100 to $800 for a voltage regulator up to $250 to $2,500 for a stator or rotor, HomeGuide reports.
Routine generator maintenance averages $274 a visit (Angi, range $171 to $396). Starting batteries wear out too: Generac says most last 3 to 5 years.
Key numbers
- $150 to $300+Service call minimumHomeGuide, Jan 2026
- $250 to $2,500Stator or rotorHomeGuide, Jan 2026
- $250 to $1,500Stator or rotorAngi, Sep 2026
Generator repair is finding and fixing why a standby or portable generator will not start, will not take the load, or shows an alarm. HomeGuide puts the minimum service call at $150 to $300 or more before parts.
Safety first. Smell gas near the generator?
Leave the area and call the gas utility from outside. Never run a portable generator indoors or in a garage: CPSC counts about 100 deaths a year in the US from portable generator carbon monoxide.
How much does generator repair cost
Pricing a standby generator, or one that will not start? Call the generator line. A local installer answers and quotes the visit first.
| Repair | Published price | Source |
|---|---|---|
| Service call minimum | $150 to $300+ | HomeGuide, Jan 2026 |
| Stator or rotor | $250 to $2,500 | HomeGuide, Jan 2026 |
| Stator or rotor | $250 to $1,500 | Angi, Sep 2026 |
| Engine repair | $150 to $2,000 | HomeGuide, Jan 2026 |
| Carburetor | $100 to $500 | HomeGuide, Jan 2026 |
| Voltage regulator | $100 to $800 | HomeGuide, Jan 2026 |
| Voltage regulator | About $80 for the part, plus labor | Angi, Sep 2026 |
| Transfer switch repair | $50 to $400 | HomeGuide, Jan 2026 |
| Transfer switch repair | $50 to $150 | Angi, Sep 2026 |
| Transfer switch replacement | $400 to $2,500 | HomeGuide, Jan 2026 |
| Starting battery | No published price; most last 3 to 5 years | Generac |
Parts and labor as each publisher reports them. A service call minimum applies before parts.
The service call is the floor: HomeGuide says $150 to $300 or more. A carburetor repair runs $100 to $500 and a transfer switch repair $50 to $400. The expensive one is the stator or rotor, which HomeGuide puts at up to $2,500 and Angi at up to $1,500. Ask for the diagnosis and the repair as two separate prices, and ask whether the visit fee counts toward the repair.
Generator not starting or showing an alarm? Call the generator line with the brand, model and the alarm name on the controller.
Do this now: generator not running, gas smell or a portable in use
- Smell gas near the generator: leave the area and call the gas utility from outside.
- Running a portable: keep it outside, at least 20 feet from the house; the CPSC counts about 100 deaths a year from portable generator carbon monoxide. A garage is not outside.
- Standby will not start: read the alarm on the controller. For an overcrank alarm, Generac's first checks are the fuel valve and, on propane, the tank level.
- Long outage: Generac's guide says after 24 or more hours of running, shut it down for 30 minutes and check the oil.
- Then call with the brand, model, serial number and the alarm name.
Is it an emergency? When generator repair cannot wait
Generator repair is urgent when the power is out and the standby will not start or will not carry the house, or when you smell gas or see a fuel leak. Expect at least the $150 to $300 service call minimum HomeGuide reports.
A unit that fails its weekly exercise while the grid is up, shows a maintenance reminder, or needs a battery can usually be booked for a weekday. Most batteries last 3 to 5 years, Generac says, so a weak one is a routine fix.
Why a standby generator fails: the common causes
- The starting battery. Generac says most generator batteries last 3 to 5 years. Hard starting is the first sign; corrosion and a swollen case mean it has failed.
- Sitting unused. HomeGuide says infrequent use leads to battery failure, dried-out seals and corrosion.
- Fuel. An overcrank alarm means the engine cranked but would not start. Generac's first checks are the fuel valve and, on propane, the tank level.
- Low oil pressure. Another alarm on Generac's list. Check the oil level, and call if the alarm comes back.
- Generator end parts. The stator, rotor and voltage regulator, which are the costly repairs in the table above.
- The transfer switch. The generator runs but the house stays dark. Repair is $50 to $400 and replacement $400 to $2,500 (HomeGuide).
What to check before you call for generator repair
Generac's outage troubleshooting guide lists the common alarms. Read the alarm on the controller and check these first. Stop and call if anything looks burned, smells of gas, or is leaking.
- Overcrank: confirm the fuel valve is open and the propane tank is not low.
- Low battery: the controller needs 12 volts DC. Generac says to allow 24 hours of charging before you judge it.
- RPM sense or no crank: have the battery checked.
- Main line breaker off: the generator's own breaker is open, so no power reaches the house.
- Long outage: Generac's guide says after 24 or more hours of running, shut it down for 30 minutes and check the oil.
- Write it down: brand, model, serial number, the alarm name and the install date. The company will ask for them.
If the generator runs and the house has power but some circuits are dead or a breaker trips, the problem may be in the house wiring; see breaker keeps tripping or emergency electrician.
Generator maintenance near me: schedule and cost
| Interval | When | What gets done |
|---|---|---|
| Break-in | After the first 25 hours | Oil and oil filter |
| Schedule A | Every 200 hours or 2 years | Oil and filter, battery check |
| Schedule B | Every 400 hours or 4 years | Oil, air filter, spark plugs, valves |
| Hot or cold climates | Every year or 100 hours where temperatures run below 40°F or above 85°F | Shortened schedule |
Generac's maintenance schedule for air-cooled home standby generators. Follow your own model's manual.
Angi puts a scheduled service visit at $171 to $396, with a national average of $274, and annual maintenance at $150 to $300. HomeGuide's annual range is $200 to $650 and says to run the generator 20 to 30 minutes a month or as the manufacturer directs. Generac shortens its schedule to once a year or every 100 hours where temperatures run below 40°F or above 85°F. Ask the company which schedule fits your climate.
A maintenance visit is also the time to have the battery checked, since most last only 3 to 5 years, before an outage finds it weak.
Generator due for its yearly service, or overdue? Call the generator line with the brand, model and hours on the controller.
Check the warranty before you pay for a repair
Generac backs its 22 kW home generator with a 5-year limited warranty. Kohler's standard warranty is 5 years or 2,000 hours and covers parts, labor and travel; Kohler sells 7-year and 10-year extensions only within the original 5 years. Angi says standard warranties run 2 to 5 years. If the unit is still inside its warranty, call the dealer that installed it or the manufacturer before you pay anyone for a repair.
Repair or replace: how long a generator lasts
Angi says replacement is often needed at 10 to 20 years; HomeGuide says 15 to 30 years with proper maintenance. A battery, carburetor or regulator on a well-kept unit is worth fixing. A stator or engine repair in the thousands on a unit near the end of that range is the point to price a new one. The whole house generator cost guide has unit prices by size, and the generator installation guide covers what a replacement install involves.
Portable generator safety: carbon monoxide
CPSC says an average of about 100 people die in the US each year from carbon monoxide from portable generators. Its rule: run a portable generator outside only, at least 20 feet from the house. A garage is not outside, even with the door open. If anyone feels dizzy, sick or weak while a generator is running, get everyone into fresh air and call 911.
To power the house from a portable safely, have an electrician install a transfer switch or an interlock; the installation guide has the prices. For other electrical problems, start at electrical repair.
More electrical guides
Questions people ask
How much does it cost to repair a generator?
HomeGuide puts the service call minimum at $150 to $300 or more. Common repairs run $100 to $500 for a carburetor, $100 to $800 for a voltage regulator and $250 to $2,500 for a stator or rotor.
How much does generator maintenance cost?
Angi says a scheduled service visit costs $171 to $396, averaging $274, and annual maintenance $150 to $300. HomeGuide's annual range is $200 to $650.
How often should a whole house generator be serviced?
Generac's schedule for air-cooled units is every 200 hours or 2 years for oil and filter, and every 400 hours or 4 years for a fuller service. Where temperatures run below 40°F or above 85°F, Generac says once a year or every 100 hours.
How long does a generator battery last?
Generac says most generator batteries last 3 to 5 years. Hard starting, corrosion and a swollen case are the signs it is failing.
Why won't my Generac generator start?
Check the alarm. Overcrank means check the fuel valve and propane level; low battery means it needs 12 volts DC and 24 hours of charging; RPM sense or no crank points to the battery.
How long do whole house generators last?
Angi says replacement is often needed at 10 to 20 years; HomeGuide says 15 to 30 years with proper maintenance.
Can I run a portable generator in my garage?
No. CPSC says to run portable generators only outside, at least 20 feet from the house, and counts about 100 deaths a year from portable generator carbon monoxide.
Alarm on the controller, or a generator that will not start? Call the generator line with the brand, model and alarm name.
- 1Call the line
- 2It rings a local company
- 3They give you the price
Before you book
- License numberAsk for it, then check it with the state board.
- Written priceGet the visit fee and the job price in writing before work starts.
- Proof of insuranceAsk for the certificate, especially for roof, tree and electrical work.
Sources (10)
- HomeGuide: Generator repair cost (2026-01-14)
- Angi: Whole-house generator maintenance cost [2026 data] (2026-09-18)
- Generac Support: Introduction to generator battery (checked 2026-10-11)
- Generac Support: Troubleshooting guide for home standby generators during an outage (checked 2026-10-11)
- Generac Support: Maintenance schedule for a home standby generator (checked 2026-10-11)
- CPSC: As winter storms threaten millions, CPSC issues safety tips to prevent carbon monoxide poisoning and fires (2025-02-10)
- Generac: 22kW home generator with transfer switch (checked 2026-10-11)
- Kohler (Rehlko): Generator warranty (checked 2026-10-11)
- Angi: How long can a whole house generator run? (2026-07-09)
- HomeGuide: How much does a whole house generator cost (2025-12-30)
Talk to a generator installer who serves your area
Have the address, whether you have natural gas or propane, the generator brand and model if you have one, and any error code. The company will quote its visit or estimate fee first.
Free call to an independent company in your area that takes this kind of work.