*The Angi rating for Generator Install companies in Annapolis Junction, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
*The HomeAdvisor rating for Generator Install companies in Annapolis Junction, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.
Last update on June 12, 2026
Serving Annapolis Junction, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2007
Free estimates
Emergency services offered
"Outstanding! Super professional. Offered advice on my electrical installation and did the work quickly. I was very pleased with the end installation."
Serving Annapolis Junction, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Free estimates
Warranties offered
"Their team was professional and installed the fan pretty fast. The owner was great with communicating what to expect time and cost wise. I will definitely use this company again."
Serving Annapolis Junction, MD and surrounding areas
Approved
In business since 1969
Emergency services offered
Warranties offered
"Installed generator and provide maintenance agreement."
+2
Serving Annapolis Junction, MD and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"The installation of my Ecobee thermostat was completed on Saturday by Stiffler Electric Service. David did a great job. I will certainly use Stiffler again."
Serving Annapolis Junction, MD and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"On both appointments, the technicians (David the first time, Matt & Evan the second time) were respectful and honest, very well organized. And they arrived right on time. We had ceiling fans and recessed lighting installed. They kept the work areas clean. -Frank K., City of Gambrills. My wife and I are very happy with their work, and the jobs were completed in the quoted time, even early! Everything was well explained and questions were answered with the feeling that they weren't in a rush to leave until I was satisfied. We will call again for future jobs."
+8
Serving Annapolis Junction, MD and surrounding areas
Approved
In business since 2020
Free estimates
Credit card accepted
"Very friendly from the technician to the secretary. They got me in fast worked with my schedule and got out fast. They also mounted my ring doorbell.. Excellent service and the price was awesome"
+2
Serving Annapolis Junction, MD and surrounding areas
Approved
In business since 2021
Free estimates
Warranties offered
"Brian was excellent. On time explained everything he was doing very reliable excellent will definitely hire again."
Serving Annapolis Junction, MD and surrounding areas
Approved (Corporate)
In business since 1969
Emergency services offered
Credit card accepted
"Robin was super nice and easy to work with - she called me to notify me when Bob would be arriving. Bob worked quickly and new his stuff about generators."
+7
Serving Annapolis Junction, MD and surrounding areas
Approved
In business since 2014
Free estimates
Emergency services offered
One Source Systems is one of the premier custom integrators in the greater Washington D.C. area. We are focused on an elevated client experience and meeting your needs for Smart Home design, including experiential elements such as lighting, shades and incredible dedicated theater and Audio/Video solutions. With over 10 years of experience in the audio industry, we are the experts you need to take care of your home or business. We will treat your home as we would treat our own. Give One Source a call today - we look forward to working with you!
+26
Serving Annapolis Junction, MD and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
Horizon Services (MD), LLC, is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizon Services (MD), LLC, remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners.
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