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Avatar for GAC Services
GAC Services
4.8(
293
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Landover, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"I’m back again to write another stellar review for GAC. Last year they replaced our HVAC system; this year we circled back and had them install a home generator. This was a long and drawn out process due to the various approvals needed from Montgomery County as well as coordination with Washington Gas (which ended up not just being a simple sign off but necessitating an additional, expensive upgrade to the gas line from the street to our home). Nevertheless, GAC did a fantastic job shepherding this process over the 6+ months of waiting on stakeholders, and they were also maximally accommodating to our family’s significant constraints on time and availability (due to health concerns related to a medically fragile family member). A special kudos to Sandy M, GAC’s master electrician, who took it on personally to ensure we were taken care of all throughout this process, going above and beyond with phone calls, text messages, personal visits, etc. on behalf of my family, I want to thank GAC and am giving top marks across the board for this effort which was complex , lengthy, and ultimately successful."
Additional Photos
14 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Elements Of Energy L.L.C.
Elements Of Energy L.L.C.
5.0(
23
)
Generator - Install - For Business

Serving Landover, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"I had an excellent experience with Kevin. He installed a very large and complex crystal chandelier in our foyer, and the entire process was handled with exceptional professionalism and precision. This was not a simple installation,the chandelier is heavy, intricate, and required careful assembly and mounting at a significant height,but he approached the job with patience, attention to detail, and clear expertise. He took the time to ensure every component was perfectly aligned and secure, and the final result looks absolutely stunning. The installation was done safely, efficiently, and with great care for our home. I would highly recommend him to anyone needing electrical work, especially for challenging or high-end lighting installations. Truly outstanding workmanship."
Kitchen and Bathroom
Fixtures & Ceiling Fans
LED Recessed lights
EV Charging Stations
Switches & Receptacles

+176

Response time1 day
Response rate93%
12 neighbors recently requested a quote
Green's Electric
5.0(
18
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Landover, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"It went great! Professional, quick to call and discuss the request. What I like the most was their genuine interest in helping me fast. They gave me an estimate the same day and the job was performed in less than 48 hours. I would definitely hire Green Electric for my future requirements. Thanks Mr. Darnell!"
Response time1 day
Response rate100%
25 neighbors recently requested a quote
Avatar for Beltway Electric Services llc
Beltway Electric Services llc
4.5(
32
)
Fixed Generator - InstallPortable Generator - Install

Serving Landover, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1983

Free estimates

Emergency services offered

"Outstanding service. I originally needed an electrician to determine why I lost power to ½ my house. What Jody uncovered was a defective circuit breaker and my main switches overheating and in the process of melting down. He was able to change out the panel and install new breakers immediately. I’m grateful for the prompt response by Gene and the professionalism of Jody and Brian."
Response time10 hrs
Response rate100%
5 neighbors recently requested a quote
Calvert Generator
New to Angi
Generator - Install - For Business

Serving Landover, 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

Response time10 hrs
1 neighbors recently requested a quote
Ritzau, LLC
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Landover, MD and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Ritzau Generators
10520 Ewell Avenue
Kensington, MD. 20985
301-580-4491
[email protected]
Patrick installed a home generator for us back in the spring 2013.  It has performed wonderfully as needed.
We had an issue with a leak from one of the gas pipes feeding the generator and Patrick responded immediately.
"
Recommended by100%of homeowners
Nothing But Panels, LLC
4.8(
246
)
Portable Generator - Install

Serving Landover, MD and surrounding areas

In business since 2016

Warranties offered

Credit card accepted

"Anthony was great. He installed two new breakers for a washer/dryer I had installed in the basement. He also install outside motion lights and changed a single outlet to a double. He is very professional and explain everything before he started the work. He communicated well with us. I highly recommend this company."
200A amp upgrade
200A upgrade
Meter can relocation
Federal pacific panel
Whole house surge protector

+41

Response time6 hrs
Response rate92%
Recommended by99%of homeowners
Avatar for Paradise Construction
Paradise Construction
4.4(
173
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Landover, MD and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"Awesome! I wanted to do a heavy-up at my new home. I shopped around and got quotes from several companies incl Tim. I chose Paradise because of the price, responsiveness, and professionalism that Tim conducted himself. The job called for significantly more work than expected because of my desire to eventually add a backup generator, Tim made sure that I would not need to reinvent the wheel later and installed the right equipment to meet my future needs. During the course of his work I decided to add several additional outlets and discovered a mis-wired light. He took care of all of the work in short order. Tim is officially my go-to electrician."
Recommended by85%of homeowners
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Generator Install questions, answered by experts

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

The Landover, MD homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.