Generator Installations

Generator Installations Manassas, VA

When ice storms, rain and high winds batter Northern VA, fallen power lines leave thousands of customers without electricity—sometimes for days. Work and home life come to a standstill without power for appliances, lights and heating or cooling systems. Unforeseen expenses start piling up, and without electricity, refrigerated foods spoil, pipes freeze and basements flood. Relocation costs only add to the stress. Fortunately, you can prepare your home and family for power grid failures by hiring Parrish Services to install a standby generator in Manassas, VA.

Innovations to Match Your Lifestyle

Permanent standby generators use natural gas, propane or other fuels to produce sustained electric power when electric lines go down. Many of these devices feature automatic switches to activate the unit, even when you are away from home. Wi-Fi monitoring lets you track operation, run diagnostic tests and spot potential repairs early—before the generator is called into service. Other essential features include auto fuel cutoff, which safeguards against fire and increases energy efficiency.

Parrish Financing Plans

Parrish and GreenSky® have teamed up to offer affordable financing for generator installation and other services over $500. Financing plans include extended payments and competitive interest, and customers can apply online or call Parrish at (571)-650-1016 to learn more.

Which Backup Generator Is Right for Your Home? 

When deciding on a standby generator, size, output and special features determine the price. If your goal is staying powered-up for weeks, you’ll need a whole-house power generator. Looking for a generator to keep lights on and run your freezer and refrigerator? A smaller home standby generator may suffice. And when you need auxiliary power for short-term emergencies, your technician may recommend a portable generator for cost-effective flexibility.

Generator Services & Features

Recognized as VA’s top mechanical contractor four times in the last 17 years and recently awarded Top National Mechanical Contractor, Parrish Services is a turnkey solution for your generator needs. We provide electrical and gas work for full-service installation, so there’s no need for multiple contractors to complete your backup power installation.

Parrish Services comprehensive generator services include:

  • Liquid-cooled generators for large homes or additional power needs
  • Briggs & Stratton generator installation
  • Generator service for Briggs & Stratton, Kohler, Cummings, Champion & other backup power brands
  • Installation of generator interlock switches for portable generator hook-up
  • Large in-house parts inventory that gets you up & running fast!

Backup Power Features & Benefits


  • Sufficient power for large home
  • Worry-free operation
  • Auto-transfer switch
  • In-ground fuel source
  • Wi-Fi monitoring available
  • Weekly self-testing that can be reported to our monitoring team


  • Up to 24kW power for small to medium homes
  • Up to 150kW generators for larger structures
  • Auto switch & monitoring available as add-ons
  • In-ground fuel source
  • Reasonable pricing

NoVA Generator Installation Services

To meet Virginia code requirements, standby generators must be installed by trained and certified professionals. As a licensed plumbing and electrical contractor, Parrish oversees the entire installation process. Our technicians pull necessary permits, schedule inspections and perform all installation tasks, so there’s no waiting for subcontractors to finish the project.

Count on Parrish Services to perform these generator installation services in Manassas, VA:

  • Site selection, leveling & pad preparation
  • Permitting & inspection scheduling
  • Natural gas or LP piping & connections
  • Evaluation of power requirements & electrical load
  • Generator sizing to deliver the desired power
  • Coordination of electrical utility power drops
  • Scheduling of gas meter upgrades (when required)
  • Coordination with selected propane company to determine tank size
  • Installation & warranty documentation
  • Project financing

Request Annual Generator Maintenance

For long, high-performance life, protect your standby generator with regular inspections and tune-ups. A Parrish Priority Plan ensures your equipment receives the professional maintenance needed to keep it operating year after year—and emergency after emergency. Call Parrish at (571)-650-1016 or connect online to schedule site evaluation and transfer switch installation for standby generators or interlock switch installation for portable generators.