• 240-719-5849
  • Five Star Guarantee
  • Year Established: 2003
  • License Number(s): 24521
  • In Business 20+ Years
  • Family Owned & Operated
  • Financing Available
  • 24/7 Emergency Service
"Over 21 years ago, father and son Bill and Guillermo Castillo set out on a mission to create a customer-first electrical company founded on a legacy of service, trust, and care for the families in their community. Our company has grown to serve thousands of homeowners, always with the same commitment to safety, reliability, and excellence. Our mission is to ensure that every home we touch is powered safely and efficiently. When you choose Electrical Connections, you're choosing a company that puts families first. We treat your home like our own, because your safety is our top priority!"

Guillermo Castillo, Team Leader
Five Star Guarantee
We stand behind every Five Star Rated company with Our Guarantee. We've done the research for you and identified the best home service pros in your neighborhood.
Why Homeowners Trust Five Star Rated
Sandra L.

I have used Five Star Rated for painters, foundation issues, interior painting, siding, and more. Any company that I need, I refer to Five Star Rated as my first phone call. I consider them all to be professional, reasonable, efficient, and good to work with. I appreciate Five Star tremendously and am very pleased.

Beverly W.

I have used Five Star Rated two or three times, and all the contractors have been excellent.

Lawrence R.

I find Five Star Rated very useful and have used it many times. I found it very easy to use, and the contractors were very good.

  • 240-719-5849
  • Five Star Guarantee
  • Year Established: 2003
  • License Number(s): 24521
  • In Business 20+ Years
  • Family Owned & Operated
  • Financing Available
  • 24/7 Emergency Service
"Over 21 years ago, father and son Bill and Guillermo Castillo set out on a mission to create a customer-first electrical company founded on a legacy of service, trust, and care for the families in their community. Our company has grown to serve thousands of homeowners, always with the same commitment to safety, reliability, and excellence. Our mission is to ensure that every home we touch is powered safely and efficiently. When you choose Electrical Connections, you're choosing a company that puts families first. We treat your home like our own, because your safety is our top priority!"

Guillermo Castillo, Team Leader
Services Offered
From simple fixes like outlets and dimmers to major upgrades like EV chargers, generators, or modern lighting, we handle it all with care, respect, and expertise. Our licensed, background-checked electricians arrive on time with a fully stocked truck, ready to help. During normal business hours, we charge a small dispatch fee between $39 and $69.
Services not offered: Plumbing and HVAC services
Insurance
General Liability & Workers' Compensation
Warranties / Guarantees
Complete customer satisfaction guaranteed
5-year warranty on all parts and labor; lifetime warranty on all panel installations
Company History
The local company is family owned and operated.
Recognitions
Best of Gaithersburg - Voted #1 for 11 years in a row, 2025; Small Business of the Year - Hispanic Chamber of Commerce 2024; Mid-Size Business of the Year - Gaithersburg Germantown Chamber of Commerce, 2024