๐ŸŒฟ Spring maintenance season is here. Book now before storm season โ€” slots fill fast across SE Michigan.

Annual Generator Maintenance ยท SE Michigan

Keep Your Generator
Ready When It Matters

A generator that never gets serviced is a liability, not an asset. Annual maintenance catches problems before outages do โ€” and keeps your warranty intact. We specialize in nothing but generators, so we service them better than anyone.

Generac Authorized Service Same-Week Appointments Available Written Inspection Report Included
3ร—
More Failures Without Annual Service
100+
5-Star Reviews
4.9โ˜…
Average Customer Rating
10
SE Michigan Service Cities

Skip Maintenance, Risk Failure

Your generator sits idle 99% of the time. That idleness is exactly what kills it. Annual service keeps every system primed โ€” so it starts on the first try when DTE cuts out.

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Warranty Compliance

Generac, Kohler, and Briggs require documented annual maintenance to honor warranty claims. Skip a year and you could be on the hook for a $4,000 repair.

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Reliability When It Counts

Generators that skip annual service fail at 3ร— the rate of maintained units. Most failures happen in the first 60 seconds of a real outage โ€” exactly when you need it most.

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Fuel Efficiency

Dirty air filters, degraded oil, and fouled spark plugs force your generator to work harder and burn more fuel. A tune-up pays for itself in run-time savings over a single storm season.

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Battery Health

The #1 cause of generator no-starts is a dead battery. We test and replace batteries proactively โ€” not reactively after your first blackout of winter.

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Transfer Switch Integrity

A stuck or corroded transfer switch means your generator runs fine but your home never gets power. We test the full transfer cycle every visit.

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Manufacturer Requirements

Generator manufacturers specify annual service intervals for a reason โ€” engine wear, oil degradation, and component fatigue follow predictable schedules. We follow the spec sheet, not guesswork.

What Every Visit Includes

No shortcuts. No upsells you didn't ask for. Every maintenance visit follows our 10-point checklist โ€” and you get a written inspection report with every job.

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Oil & Filter Change
Full synthetic oil drain and refill with OEM filter. Engine protection starts here.
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Spark Plug Replacement
Worn plugs cause hard starts and misfires. We replace on every annual visit โ€” no exceptions.
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Battery Load Test
Cold-cranking amp test under actual load. We flag batteries within 6 months of failure before they fail.
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Transfer Switch Test
Full cycle test โ€” grid loss simulation, transfer, reconnect. We confirm both directions work perfectly.
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Load Bank Test
Validates actual output capacity under full rated load. Catches derating issues invisible at idle.
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Coolant Check
Coolant concentration, level, and condition check. Degraded coolant accelerates corrosion in liquid-cooled units.
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Air Filter Inspection
Inspect and replace if needed. Restricted airflow is the silent fuel-efficiency killer.
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Firmware Updates
Controller software updates from Generac and other manufacturers โ€” applied while we're on-site.
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Full Visual Inspection
Enclosure, fuel lines, exhaust, wiring, and mounting. We catch issues before they become failures.
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Written Inspection Report
Every visit ends with a signed report documenting condition, work performed, and any flagged items. Keep it for warranty records.

Residential & Commercial Plans

Simple, transparent pricing. No surprise add-ons. Pick the plan that matches your generator size and how much peace of mind you want.

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Commercial Semi-Annual Plan
Two visits per year ยท Generators 26kW and above
  • Two maintenance visits per year (spring + fall)
  • Full 10-point service checklist each visit
  • Load bank test every visit
  • Oil, filter & spark plug replacement
  • Transfer switch full-cycle test
  • Coolant concentration and condition check
  • Firmware updates and controller diagnostics
  • Written inspection reports + compliance binder
  • Emergency priority response
Get Commercial Quote โ†’

We Service All of SE Michigan

From Bloomfield Hills to Brighton, our technicians cover the full Oakland County area and surrounding communities. Same-week appointments available in most areas.

After the Tune-Up

These aren't installation reviews โ€” they're from homeowners who've been on our annual maintenance plan for years.

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"Third year on the annual plan. Technician caught a battery showing early failure signs โ€” replaced it on the spot. Two weeks later we had a 6-hour outage. Generator ran perfectly the whole time."

DB
David B.
Bloomfield Hills, MI
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"They found a firmware issue during maintenance that was causing false fault codes. Fixed it in 20 minutes. Without the annual check I would never have known until a real outage triggered the problem."

KM
Karen M.
West Bloomfield, MI
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"My Generac warranty required documented annual service. Powerhouse handles the whole thing and gives me the paperwork I need. Simple, fast, and the generator has never missed a beat."

RP
Robert P.
Rochester, MI

Book Your Annual Maintenance

Spring slots fill up fast. Submit the form and we'll confirm your appointment within one business day. Prefer to talk? Call us directly โ€” we pick up.

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Call or Text
(248) 555-0100
or submit online
Same-week scheduling available No hard sell on site
Request Maintenance
We'll confirm within one business day.

No spam. We'll only contact you about your appointment.

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Request Received!

We'll confirm your maintenance appointment within one business day. Questions? Call us at (248) 555-0100.

FAQ

Straight answers, no runaround.

How often does my generator need maintenance?

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Most residential standby generators (air-cooled, under 26kW) require annual service. Larger liquid-cooled commercial units typically need service every 6 months or every 200 hours of operation โ€” whichever comes first. We follow your manufacturer's spec sheet, not a one-size-fits-all schedule.

How long does a maintenance visit take?

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Most residential maintenance visits take 60โ€“90 minutes. Commercial visits with load bank testing typically run 2โ€“3 hours. We'll give you an accurate estimate when you book.

What generator brands do you service?

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We service Generac, Kohler, Briggs & Stratton (Standby), Cummins, Champion, Honeywell, and most other residential and commercial standby generator brands. We are Generac authorized. If you're unsure whether we cover your brand, just call โ€” we probably do.

What if you find something wrong during inspection?

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We tell you clearly what we found, what it means, and what it costs to fix โ€” before we do any additional work. No surprise charges on your invoice. Minor items (like a battery showing early derating) can usually be addressed same-day. Major repairs get quoted and scheduled separately.

Does annual maintenance count toward my Generac warranty?

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Yes. Generac requires documented annual service by a qualified dealer to maintain warranty coverage. We provide a written inspection report after every visit โ€” keep it with your warranty documents. We're a Generac authorized dealer so our service records count.

My generator is new โ€” do I really need maintenance already?

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Yes. Most manufacturers require a first-year service at the 200-hour mark or 12 months, whichever comes first. This "break-in" service addresses initial wear on seals, valve clearances, and oil contamination that happens during the first operating cycle. Skipping it voids your warranty from year one.