Standby Generator Installation and Maintenance in Northern Virginia
Need reliable backup power with clear options and expert care? Our licensed electricians install and maintain standby generators the right way. We serve Northern Virginia, including Alexandria, Fairfax, and Arlington. Homeowners trust us for concierge service and a 4.8 rating from 1,434 reviews. We handle permits and inspections as a Class A Virginia Contractor. Call or book online today.

Trust Parrish Services for professional and reliable outdoor electrical solutions, blending technology and expertise to meet your needs.

Parrish Services: Ensuring power reliability with expert attention to your Generac QuietSource Series generator needs.

Braving winter weather, Parrish Services delivers dependable generator maintenance to keep your home powered and protected.

When winter strikes, Parrish Services keeps your home powered with dependable on-site generator service and expert care.
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View all offersParrish Services offers a free estimate for generator installations in Northern Virginia.
Why Choose Us
Class A VA Contractor
Licensed, bonded, insured; permits and inspections handled
Factory‑trained techs
Certified in electrical, HVAC, and plumbing
Award‑winning service
National HVAC Contractor of the Year; A+ BBB; Best Pick
24/7 live dispatch
Real people, rapid scheduling and updates
Proven local trust
4.8 rating from 1,434 reviews
What Our Customers Say
professionalism
“Service was very prompt, and the work was completed without issues. I have used them for several years to maintain and service my generator, and I have always been happy. Eric does a great job and is very friendly and efficient.”
honesty
“Because we are part of their annual service, they did not charge a dime and explained everything clearly.”
The most common no-start causes are a weak or dead battery and corroded battery connections. Other frequent issues include blown control-panel fuses, a tripped breaker, clogged fuel filters or moisture in fuel lines, incorrect gas pressure or a gas leak, debris blocking intake or exhaust, and failed starters or control boards. Dirty air filters or worn spark plugs can also prevent starting. These causes align with our generator maintenance and repair checklist.
Quick checks:
- Verify battery voltage and clean terminals.
- Check gas supply and pressure.
- Inspect fuses/breakers and look for leaks or debris.
Updated: 2025-12-11 00:00:00
Need help in Manassas, VA? Call (571)-650-1016 or book online.
"Great response and generator back working just in time for freezing temperatures" — Curt H.
Change the oil per your generator manufacturer’s schedule; Parrish replaces oil and filter during our annual maintenance visit. Our certified technicians perform manufacturer-recommended checks, including battery voltage testing, verifying gas pressure, simulating a power outage to test the automatic transfer switch, and checking for gas leaks. Off-site Wi-Fi monitoring reviews weekly self-test reports and alerts us to service needs before storms in Fairfax or Alexandria. Ask about Priority Service Plans for turnkey upkeep.
Updated: 2025-11-27 00:00:00
Need help in Fairfax, VA? Call (571)-650-1016 or book online.
"Great response and generator back working just in time for freezing temperatures" — Curt H.
Whole-house generator installation cost varies by generator size, fuel type (natural gas or LP), and the scope of electrical and gas work. Parrish Services provides free estimates for generator installations in Northern Virginia. A technician will confirm final costs after assessing load needs, site prep, pad, transfer switch options, and any utility coordination. Parrish is a turnkey, licensed contractor that pulls permits, schedules inspections, and coordinates gas meter upgrades or utility power drops when required. Service is available across Northern Virginia, including Reston and McLean.
Updated: 2025-12-31
Need help in Remington, VA? Call (571)-650-1016 or book online. "The tech that came out, Doug B, was phenomenal!" — Matt H.
Standby generator repair cost is confirmed after a technician diagnosis because pricing varies by the failed part, labor time, and your fuel/electrical setup. The most common driver is component replacement; small items like batteries or filters usually cost less than control boards or starters. Technicians serving the Bealeton area often see no‑start issues tied to weak batteries, which are far cheaper to resolve than control electronics. For older units with repeat breakdowns, weigh the repair estimate against replacement and consider monitoring to prevent surprises. Priority Service Plans include discounts on service repairs and help surface problems before outages.
Common cost drivers our electricians check first:
- Dead battery or corroded terminals
- Clogged fuel filter or low gas pressure
- Worn belt or failed starter
- Control-board faults or wiring corrosion
Schedule a diagnostic visit before the next storm so small faults don’t grow into expensive repairs.
Updated: 2026-04-02
Need help in Bealeton, VA? Call (571)-650-1016 or book online. "Great response and generator back working just in time for freezing temperatures" — Curt H.
There isn’t a flat price for standby generator repair. A technician must inspect the unit, diagnose the issue, and confirm parts before quoting. Parrish Services repairs major brands with factory-trained techs and keeps a large in-house parts inventory to speed fixes. After diagnosis, you can expect an upfront price before work begins. Remote monitoring can catch problems early, and annual maintenance includes transfer switch testing.
Updated: 2025-12-31
Need help in Reston, VA? Call (571)-650-1016 or book online.
"The tech that came out, Doug B, was phenomenal!" — Matt H.
A home standby generator installation cost is finalized after an on-site assessment because the price depends on equipment size, fuel setup, and the scope of electrical and gas work required. The biggest driver is the generator’s power capacity, which determines both the unit cost and the installation complexity.
As a licensed plumbing and electrical contractor, Parrish pulls permits, coordinates inspections, and manages the entire install so you don’t juggle multiple subs. We regularly handle permitting and utility coordination for Northern Virginia homes near Great Falls. Financing options are available for installations, and a $300 off promotion applies to qualifying replacement/installation invoices of $6,000 and up.
What typically affects your final price:
- Generator kW and desired coverage (partial circuits vs whole-house)
- Gas piping length/size, meter upgrades, or propane tank setup
- Transfer switch type and any panel or wiring changes
- Site prep, concrete pad, trenching, and required permits/inspections
Schedule a site visit to size the system correctly and verify gas and electrical needs before you decide.
Updated: 2026-03-13
Need help in Great Falls, VA? Call (571)-650-1016 or book online. "Great response and generator back working just in time for freezing temperatures" — Curt H.
Generator repair costs vary by the issue, needed parts, and labor time. A Parrish technician will diagnose the problem on site and provide upfront pricing before work begins. Priority Service Plan members receive discounts up to 15% off services and reduced emergency or trip fees. Our large in-house parts inventory often speeds repairs. We service major brands like Generac, Kohler, Briggs & Stratton, Cummins, and Champion across Northern Virginia, including Fairfax and Reston.
Updated: 2025-12-31
Need help in Remington, VA? Call (571)-650-1016 or book online. "The tech that came out, Doug B, was phenomenal!" — Matt H.
You can handle light upkeep, but full generator maintenance is best left to a certified technician for safety and reliability. Parrish Services performs manufacturer-recommended checks, tests the automatic transfer switch, verifies gas pressure, and replaces oil and filters. DIY beyond cleaning and visual checks can risk gas or electrical hazards. We also offer Wi‑Fi/off‑site monitoring that reviews weekly self‑test reports and flags issues early. We serve communities like Centreville and Alexandria.
Quick checks you can do:
- Keep vents and louvers clear of debris.
- Review app/Wi‑Fi alerts.
- Schedule annual service and transfer switch testing.
Updated: 2025-12-20
Need help in Centreville, VA? Call (571)-650-1016 or book online.
Still have questions?
Have questions or need service? Contact our team today to discuss your needs, request a quote, or schedule an appointment.
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