*The Angi rating for Generator Install companies in Conowingo, 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 Conowingo, 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 July 23, 2025
Serving Conowingo, MD and surrounding areas
Approved
In business since 2015
Free estimates
Credit card accepted
"Caleb was wonderful to work with. We were able to quickly schedule an appointment and he completed my installation in a timely manner. I highly recommend Timpson Electrical & Aerial Services, LLC. and will definitely use their services in the future. Truly positive experience!"
Serving Conowingo, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2015
Free estimates
Emergency services offered
"Friendly. Answers phone calls immediately. Antonio called the day of the service to confirm appointment. He arrived on time. Installed 2 ceiling fans in a timely manner. Cost- effective. I would recommend and hire again"
+25
Serving Conowingo, MD and surrounding areas
Approved
In business since 2001
Free estimates
Warranties offered
"William Burden is the third generation owner of WBLightningRods and his company has been in business since 1950. He is very courteous, professional, was on time, and has a very good crew. William was present for the entire installation. We chose the copper system. We are glad for the peace of mind a lightning rod system will provide."
+79
Serving Conowingo, MD and surrounding areas
Approved
In business since 2003
Free estimates
Customers say: Quick response
"He was great, very professional and courteous. If anyone needs a reference you can use my name. I will certainly use him again."
Serving Conowingo, MD and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Joe, Mark, and Their Team did a Splendid Job for Us on this Business Phone Line Install. There are Very Knowledgeable and provided the Needed Assessment and "Fix" in a Very Timely Manner. I Highly Recommend Accent Tel USA! God Bless You! Philippians 1:3-6! Have a Wonderful Day in the Neighborhood & "Stay on the Nice List"! :)"
Serving Conowingo, MD and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"Friendly, efficient installation. Got done early, answered all our questions. Would use them again."
Serving Conowingo, MD and surrounding areas
Approved
Hello there and welcome! a bit about me...\n-Energetic, personable and customer service oriented\n-Highly skilled in residential electrical applications and light commercial work\n-NOT officially licensed however can get assist in getting permits pulled if required \n-Flexible scheduling provided\n-Quality over Speed mindset \n
Serving Conowingo, MD and surrounding areas
Approved
Free estimates
I am a Electrician specialized in residential homes.\n\nI have 5 years of experience and am ready to provide homeowners with their needs.\n\nLocated out of Lititz PA\n
Serving Conowingo, MD and surrounding areas
Approved
In business since 1989
Free estimates
Emergency services offered
Your Trusted AC, Heating, Plumbing, & Electric Company Since 1987\n\nWhen you need AC, heating, plumbing or electric services, look no further than Horizon Services. For 35 years, we?ve been the trusted name in plumbing, heating, and air conditioning, offering an unmatched level of service at reasonable rates. Servicing Baltimore, Cecil, and Harford counties in Maryland, and Chester, Lancaster, and York Counties in Pennsylvania, we proudly serve a large range of local homeowners with comprehensive AC, heating, and plumbing services. Our expert technicians can carry out same-day services and next day installations to ensure that your home remains comfortable year-round. Whether you?re dealing with a serious plumbing problem, a broken air conditioner, or a heating issue, you can rely on Horizon Services for the high-quality service you need at the price you want.
Serving Conowingo, MD and surrounding areas
Approved
Emergency services offered
Small jobs welcome
Offers commercial services
Hello my name is Wade. I've been doing various lines of work for 18 years now. From electrical, plumbing, maintenance, hvac, and being a mechanic. A jack of all trades if you will. Let me know whatever you got going on and I can do my best to help you with whatever situation you have!
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
Here’s what you can run with different wattages and types of generators:
Portable generator:
2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.
Partial to whole-house generator:
20,000 watts and above will make it seem like your home’s power is still on.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
From average costs to expert advice, get all the answers you need to get your job done.
The cost to install a whole-house generator in Baltimore, MD varies based on factors like generator size, fuel type, and installation complexity. Learn the typical price range and what influences your total cost.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
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.
Installing a portable generator can power key appliances during outages. Learn about the best backup generator questions to discuss with a pro.
Before installing a fixed generator, think about your use and space. Review these backup generator questions to prepare for a talk with your contractor.
Having a back-up power source in case of emergency is important. Here’s how to use a generator to power your house.
