Standby Generator Installation and Maintenance in Greater Madison Area
Get reliable standby generator installation and maintenance done right, fast. Cardinal Heating & Air Conditioning has licensed, background-checked electricians and over 30 years serving local homes. We cover the Greater Madison Area, including Madison, Sun Prairie, and Middleton. Homeowners trust us for clean, tidy work and a 4.9 rating from 4,831 reviews. Book service today to prepare before storm season or winter outages.

Each image is a real worksite photo, reflecting the quality and dedication in every project.
Why Choose Us
Why Homeowners Recommend Us
"Clean, detail oriented worker. Serviced our home generator and HVAC."
"Appointment was professional, tech was on time and very knowledgeable."
"Yearly generator check and service done right."
Answers to Common Questions
View All FAQsWhat are the top reasons a Generac generator won't start?
The most common reasons a Generac won’t start are low or no fuel, a failed system component, or an issue with the transfer switch/electrical integration. Lack of routine maintenance can also prevent startup. Our team checks fuel levels, tests system components, and evaluates the electrical setup to find the fault. We install, service, and repair whole‑home generators across the Madison and Sun Prairie area, and we offer emergency generator service for fast restoration.
<br/>Updated: 2025-12-09
<br/>Need help in Mcfarland, WI? Call (608) 888-9348 or book online.
"Eye for detail, service our home generator and HVAC." — Mary F.
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Most standby generators need oil changes per the manufacturer’s schedule, and many homeowners pair this with annual maintenance. We provide generator maintenance and tune-ups, and can confirm timing after an on-site inspection. If your unit ran through a long outage or shows alerts, book service promptly. Members get reminders, priority scheduling, and a discounted generator tune-up ($178 member price vs. $296 regular). We serve Madison and Sun Prairie.
<br />Updated: 2025-11-25
<br />Need help in Waunakee, WI? Call (608) 888-9348 or book online.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURSbks3My1RRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgIDRnK73-QE%7CCgwI_8OCogYQ-Iqu8AI%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUMtbVpIdjBBRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgIC-mZHv0AE%7CCgwIkNKFrQYQuMyDgQI%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNZOHVuTnJ3RRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICY8unNrwE%7CCgwInvCLsAYQwMzY6QE%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUQxOVBYSDBBRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgID19PXH0AE%7CCgwIh9jgrAYQ0IiD2AM%7C?hl=en-US[4] https://www.cardinalhvac.com/electrical/gfci-outlet/[5] https://www.cardinalhvac.com/electrical/surge-protector/[6] https://www.cardinalhvac.com/cardinal-care-club/[7] https://www.cardinalhvac.com/coupons/[8] https://www.cardinalhvac.com/fitchburg/electrical/[9] https://www.cardinalhvac.com/sauk-county/[10] https://www.cardinalhvac.com/monona-electrician/[11] https://www.cardinalhvac.com/category/uncategorized/How much does whole house generator installation typically cost?
Whole-house generator installation costs vary by home. We size the system and confirm scope on site, then provide a complete estimate. Price depends on generator size, fuel supply work, electrical integration (transfer switch, panel tie-in), site prep, and any needed repairs or upgrades. We handle full installation, replacement, and can bundle surge protection. Financing is available. First-time customers can use our $25 off generator services coupon. We serve Fitchburg, Madison, Sun Prairie, and nearby. <br/> Updated: 2025-12-23 00:00:00 <br/> Need help in Fitchburg, WI? Call (608) 291-6473 or book online. "Generator maintenance" — Ron G.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUQ5OU4yX3VRRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgID99N2_uQE%7CCgsIs7LIrwYQ8L6wCg%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUN4bzc3UXB3RRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICxo77QpwE%7CCgsI4fa5owYQoJTZKQ%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUQ1MGRUVWp3RRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgID50dTUjwE%7CCgsInu7lqQYQsJTQCw%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNLdFpLRWhnRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICKtZKEhgE%7CCgsIu-nNqAYQkLDgDQ%7C?hl=en-US[4] https://www.cardinalhvac.com/electrical/outdoor-lighting/[5] https://www.cardinalhvac.com/coupons/[6] https://www.cardinalhvac.com/electrical/surge-protector/[7] https://www.cardinalhvac.com/heating/heat-pumps/[8] https://www.cardinalhvac.com/fitchburg/plumbing/backflow-testing-certification/[9] https://www.cardinalhvac.com/fitchburg/heating/furnace-repair/[10] https://www.cardinalhvac.com/air-conditioning/installation/[11] https://www.cardinalhvac.com/fitchburg/electrical/surge-protector/How much does standby generator repair typically cost?
Standby generator repair pricing from Cardinal Heating & Air Conditioning is confirmed after an on-site diagnostic because the total depends on the fault, needed parts, and labor time. Most no-start or outage issues come from batteries, fuel delivery, or control settings rather than major engine failures. Our electricians service generators in the Reeseville area and handle the required electrical integration for a safe, code-compliant fix. For urgent outages, our team offers 24/7 response.
What affects final repair cost:
- Parts replaced (battery, starter, voltage regulator, control board)
- Fuel or coolant system cleaning and leak fixes
- Transfer switch or wiring faults that require testing and corrections
- Storm-related damage that demands component rebuilds
Schedule a diagnostic so a technician can pinpoint the issue and provide a written estimate before any work starts. <br/> Updated: 2026-03-31 <br/> Need help in Reeseville, WI? Call (608) 291-6473 or book online. "Nick was our service tech. Clean, detailed oriented worker. Eye for detail, service our home generator and HVAC." — Mary F.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNCbDdLLTFBRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICBl7K-1AE%7CCgwIz5CQqQYQ0O-SlgE%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUR4dDgyaDlRRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgIDxt82h9QE%7CCgwIg9WXpQYQkMrmkAI%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNZOHVuTnJ3RRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICY8unNrwE%7CCgwInvCLsAYQwMzY6QE%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUR4czYyc3lnRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgIDxs62sygE%7CCgwIgf-qrQYQuPn8pwI%7C?hl=en-US[4] https://www.cardinalhvac.com/evansville-electrician/[5] https://www.cardinalhvac.com/electrical/gfci-outlet/[6] https://www.cardinalhvac.com/cardinal-care-club/[7] https://www.cardinalhvac.com/heating/furnace-installation/[8] https://www.cardinalhvac.com/fitchburg/plumbing/backflow-testing-certification/[9] https://www.cardinalhvac.com/jefferson-county/[10] https://www.cardinalhvac.com/fitchburg/plumbing/gas-line-repair/[11] https://www.cardinalhvac.com/monona-electrician/How much does standby generator repair service typically cost?
Standby generator repair pricing depends on the fault and required parts, and we provide a complete estimate before work begins. Common cost drivers include diagnostics, fuel-system repairs, battery or controller replacement, and labor. We offer emergency generator service when you need power restored. First-time customers can take $25 off generator services. Cardinal Care Club members receive discounted generator tune-ups ($296 standard; $150 member), which help prevent major repairs. A technician will confirm final costs on site in Madison, Sun Prairie, and nearby.
<br/> Updated: 2025-12-23 <br/>Need help in Fitchburg, WI? Call (608) 291-6473 or book online.
"tech was on time, texted when they left to arrive, and was very knowledgeable and proficient doing annual service." — Jim B.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUQ5OU4yX3VRRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgID99N2_uQE%7CCgsIs7LIrwYQ8L6wCg%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUN4bzc3UXB3RRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICxo77QpwE%7CCgsI4fa5owYQoJTZKQ%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUQ1MGRUVWp3RRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgID50dTUjwE%7CCgsInu7lqQYQsJTQCw%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNLdFpLRWhnRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICKtZKEhgE%7CCgsIu-nNqAYQkLDgDQ%7C?hl=en-US[4] https://www.cardinalhvac.com/electrical/outdoor-lighting/[5] https://www.cardinalhvac.com/coupons/[6] https://www.cardinalhvac.com/electrical/surge-protector/[7] https://www.cardinalhvac.com/heating/heat-pumps/[8] https://www.cardinalhvac.com/fitchburg/plumbing/backflow-testing-certification/[9] https://www.cardinalhvac.com/fitchburg/heating/furnace-repair/[10] https://www.cardinalhvac.com/air-conditioning/installation/[11] https://www.cardinalhvac.com/fitchburg/electrical/surge-protector/How much does it cost to install a standby generator at home?
Installing a home standby generator with Cardinal Heating & Air Conditioning is priced after an on-site assessment because generator size, electrical integration, and fuel setup determine the total. Most cost comes from matching kW capacity to your essential loads, then tying the unit safely into your electrical panel with a transfer switch. A small oversize for motor starting surge can prevent costly retrofits later. We handle end-to-end installation, maintenance, repairs, and the required electrical work. Our team regularly installs whole-home generators across the Madison–Sun Prairie area.
Key factors that change total project cost:
- Generator capacity (kW) and chosen features
- Transfer switch type and any panel or wiring upgrades
- Fuel source and distance to gas meter or propane tank
- Site work like concrete pad, placement, and trenching
Promotions have included $500 off a whole-home standby generator install and $25 off for first-time generator customers; availability varies and is confirmed at booking. Schedule an in-home assessment to get a firm quote tailored to your power needs. <br/> Updated: 2026-03-10 <br/> Need help in Dane, WI? Call (608) 291-6473 or book online.
[0] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNZOHVuTnJ3RRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICY8unNrwE%7CCgwInvCLsAYQwMzY6QE%7C?hl=en-US[1] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURGdm9hMzlnRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgIDFvoa39gE%7CCgsIrYWpqgYQiKnEdA%7C?hl=en-US[2] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNCbDdLLTFBRRAB!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgICBl7K-1AE%7CCgwIz5CQqQYQ0O-SlgE%7C?hl=en-US[3] https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURLaGRySk5BEAE!2m1!1s0x0:0x1e00e3ebfe7accc5!3m1!1s2@1:CIHM0ogKEICAgIDKhdrJNA%7CCgwItsHvogYQ0JO11AM%7C?hl=en-US[4] https://www.cardinalhvac.com/coupons/[5] https://www.cardinalhvac.com/cardinal-care-club/[6] https://www.cardinalhvac.com/plumbing/gas-line-repair/[7] https://www.cardinalhvac.com/electrical/surge-protector/[8] https://www.cardinalhvac.com/fitchburg/plumbing/backflow-testing-certification/[9] https://www.cardinalhvac.com/jefferson-county/[10] https://www.cardinalhvac.com/fitchburg/plumbing/gas-line-repair/[11] https://www.cardinalhvac.com/monona-electrician/How much does home standby generator repair typically cost?
Home standby generator repair cost depends on an on-site diagnosis. We provide a written estimate before work begins, and first-time customers can take $25 off generator services through 2025-12-31.
Quick factors that affect price:
- Issue severity and parts needed.
- Brand, fuel type, and accessibility.
- After-hours or emergency service.
- Maintenance status; Care Club members get discounted tune-ups ($296 to $150).
We serve homes in Madison and Sun Prairie, and offer emergency repairs when needed. <br/> Updated: 2025-12-23 00:00:00 <br/> Need help in Fitchburg, WI? Call (608) 291-6473 or book online. "Tech was on time." — Jim B.
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Permit requirements for whole-home generators vary by city. During our in-home assessment, we evaluate your electrical system, size the generator, and plan transfer-switch and panel integration so the work aligns with local rules. Our licensed, background-checked technicians handle installation and provide emergency repairs and routine maintenance. We serve Madison, Sun Prairie, and nearby communities.
<br/> Updated: 2025-12-18 <br/>Need help in Sun Prairie, WI? Call (608) 888-9348 or book online.
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Where We Work
What areas do you serve for standby generator installation and maintenance?
We serve the Greater Madison Area, including Madison, Sun Prairie, and Middleton. See the full list of communities we visit below.