*The Angi rating for Generator Install companies in Preston, 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 Preston, 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 August 21, 2026
Serving Preston, MD and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Job well done Carey's custom service delivered and completed the installation very well."
Serving Preston, MD and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"I would highly recommend Resolute Electric. Klaus contacted me very quickly after my initial request and came to the house to assess the work request. I had two rooms that required different ceiling light installations and Klaus provided me with several different options for each install. The work was scheduled promptly and completed with the upmost professionalism and care. Klaus explained the work being performed as he went through each project enabling us to get the exact install configuration (type of light/bulb, positioning, switch options etc.) we required. The work was done patiently, not rushed and we were consulted throughout the day. Pricing for the work was very reasonable and as quoted i.e. no surprises. The quality of Klaus's work was exceptional and I'm extremely happy with the installations. I will definitely use Resolute Electric again when I need another electrical project."
+19
Serving Preston, MD and surrounding areas
Approved
In business since 2001
Free estimates
Emergency services offered
"Mark was able to provide a quote and the service in the same week. He was extremely professional and efficient. He completed two ceiling fan installs."
Serving Preston, MD and surrounding areas
Approved
In business since 1992
Free estimates
Credit card accepted
"They were excellent and I will hire them again"
+3
Serving Preston, MD and surrounding areas
Approved
In business since 2021
Free estimates
Credit card accepted
Calvert Generator is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. \n
Serving Preston, MD and surrounding areas
Approved
In business since 2000
Free estimates
Credit card accepted
Bramble's Electric Inc., was established in 2000 and provides over 15 years of professional experience. We handle both residential and commercial projects from major installs to minor electrical repairs. Our company has a commitment to the consumer to deliver excellence not only in the quality but the satisfaction of our work. Let us know how we can provide you with world class service today.
Serving Preston, MD and surrounding areas
In business since 2021
Free estimates
Credit card accepted
"dale, he was very efficient. he straighten out every problem i have. he was neat and tidy. he always let me the things i needed to. he kept me updated to everything he was doing. I am very pleased. he was friendly and professional"
Serving Preston, MD and surrounding areas
In business since 2012
Free estimates
Emergency services offered
"Very smoothly. Very knowledgeable and professional, but at the same time down to earth and friendly. I would recommend Trinity electric any day giving them an A+."
Serving Preston, MD and surrounding areas
In business since 2000
Free estimates
Credit card accepted
"Very pleased with the work they did and if I need more electrical work I will use them again."
Serving Preston, MD and surrounding areas
We service and maintain generators of all sizes along with automatic transfer switches. We been in business for quite some time and we would like to help you the best way possible. We fix diesel and natural gas system. We offer maintenance for commercial or residential. We do load banks to keep your generator healthy. We serve Tri-state areas. All different plans to chose from. Lets keep your generator running and healthy for years to come.
From average costs to expert advice, get all the answers you need to get your job done.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
Generators should give you peace of mind, but you’ll only get that if your installer knows what they’re doing. Learn how to hire a pro and what red flags to look for.
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Thinking about a generator installation? Learn about backup power options, costs to expect, and how to hire the right local pro to keep your home running.
