Services
Power, Hot Water, Peace of Mind—One Service PartnerÂ
Backup power and on‑demand hot water keep Lowcountry homes comfortable year‑round. MHG Maintenance delivers factory‑authorized care for both: electric generator repair Charleston SC, preventive maintenance agreements, and expert instant water heater cleaning Charleston SC. One truck, one appointment, zero surprises.Â
Overview: Diagnose • Maintain • Repair
Most generator failures trace back to starter or battery issues, wiring chewed by rodents, or skipped oil changes. Our certified checklist catches them early, saving you from midnight outages and costly parts swaps. When problems do strike, we bring the shop to your driveway—lifting engines and alternators on‑site whenever practical.
Maintenance Agreements
Annual
- Includes
- Oil & filter
- Air filter
- Spark plugs
- Battery load test
- Controller firmware update
- Full enclosure/wiring inspection
- 15‑minute load test
Semi-Annual
- Includes
- All annual services
- plus
- Mid‑year oil top‑off
- Fuel‑pressure check
- Second run test
Every visit is logged for Generac warranty compliance. City governments budget six‑figure contracts for the same reason: prevention beats downtime.
Generator RepairsÂ
From corroded battery cables to controller screen failures, our electric generator repair Charleston SC team fixes issues fast:Â
Starters & Batteries
One of the most common no‑start culprits.
Controller / LCD Replacement
Restores scheduling and error‑code visibility.
Engine & Alternator Swaps
Our team handles every aspect of engine and alternator swaps, from diagnostics to logistics to final installation.Â
Rodent & Storm Damage
Re‑loomed wiring and corrosion inhibitors stop repeat failures.Â
Need help fast? Call (843) 475‑3182—many parts ride with us daily.Â
Instant Water Heater Cleaning
Mineral scale coats the heat exchanger of tankless units, acting like an insulation blanket that slashes efficiency and water pressure. Manufacturers such as Navien recommend an annual flush; every 12–24 months is the industry norm.
-
- Standalone Flush – $180 flat rate
- Bundle & Save – Add to any generator visit for $120
A typical flush takes 40–60 minutes, restoring performance without removing the heater.
Remote Monitoring Add‑On
Mobile Link FLEET Premium delivers 24/7 cellular or Wi-Fi alerts, remote exercise scheduling, and dealer diagnostics for $145 per year. We install the Wi‑Fi/cellular accessory during your maintenance visit and link your phone for real‑time peace of mind. Generac research shows that early alarms can cut unplanned downtime dramatically.
Travel Policy & Service ZoneÂ
We cover Beaufort, Charleston, Myrtle Beach, and inland to Orangeburg. Jobs beyond 20 miles from our North Charleston PO Box add a transparent $25 travel fee so we can stock parts and arrive on time—no hidden mileage charges.Â
Ready to Schedule?
Prevent the next outage before it starts. Tap Book Service, email service@mhgmaintenance.com, or call (843) 475‑3182—your power and hot‑water lifelines are a single visit away.Â
Frequently Asked QuestionsÂ
How often should I service my standby generator?
Generac’s warranty requires annual maintenance; semi‑annual service is ideal for coastal climates with heavy salt and humidity.
What’s included in a generator tune‑up?
Oil, oil filter, air filter, spark plug inspection, battery load test, controller update, wiring & enclosure check, run test, and written report.
Signs I need repair—not just maintenance?
Hard starts, low‑voltage alarms, LCD error codes, or visible rodent damage demand a professional inspection.
Difference between generator maintenance and electric generator repair?
Maintenance prevents and detects problems; repair fixes components that have already failed—like starters, controllers, or alternators. Both protect your investment.
How long does an instant water heater cleaning take?
Most flushes finish in under an hour; we circulate a vinegar solution, then rinse and test flow rate.t
Will a DIY flush void my water‑heater warranty?
Improper descaling can damage sensors or seals—manufacturers recommend professional service to maintain coverage.
Do you service brands other than Generac?
Yes—Kohler and Briggs & Stratton units are covered. We refer Cummins owners to a partner shop.
Is emergency same‑day repair available?
Call anytime; we reserve limited after‑hours slots for storm‑related outages. Emergency trip fees apply.
Can I monitor my generator remotely?
Our Mobile Link FLEET install lets you—and us—receive real‑time alerts and remote reset options.