Top-rated generator install pros.

Get matched with top generator install pros in Lothian, MD

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Lothian, MD?

Select your specific project to find the pro for you.

Find Generator install pros in Lothian

Avatar for GAC Services
GAC Services
4.8(
292
)

Serving Lothian, 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
27 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Duke's Electrical Services, Inc.
Duke's Electrical Services, Inc.
4.9(
310
)

Serving Lothian, MD and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"I hired them to come and install an exhaust fan as well as a thermostat. After realizing my hvac system also had a humidifier function that was incompatible with the thermostat I bought they were able to properly install my exhaust fan (I bought the wrong kind as well) and hung a chandelier under two hours. Very efficient and fair pricing."
Recess light install
Recess and fan install
Recommended by90%of homeowners
Avatar for Bailey & Shipp Electric
Bailey & Shipp Electric
4.1(
82
)

Serving Lothian, MD and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Your technician that came out to do a yearly maintenance inspection on my generator was very nice and knowledgeable. He arrived actually earlier than expected and went right to work. I would recommend your company to anyone and it was so nice to deal with someone who acted like they enjoyed their work and wanted to please. Thank you!"
3 recessed lights
Single Recessed Light
Custom Bathroom Wiring
chandelier
Panel Replacement After

+8

Response time10 hrs
2 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Mr. Electric of Baltimore
Mr. Electric of Baltimore
5.0(
8
)

Serving Lothian, MD and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Mr. Electric responded immediately to my request and scheduled the quote visit the next day. They were able to fix the electrical switch during that apointment in a very fast and professional manner. I highly recommend them."
Gallery
Gallery
Gallery
Gallery
Gallery

+3

17 neighbors recently requested a quote
Avatar for Beltway Electric Services llc
Beltway Electric Services llc
4.5(
32
)

Serving Lothian, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1983

Free estimates

Emergency services offered

"Great job helping sort out the open neutral I had. I was able to get the new wire, breaker, and outlets installed so the electronics are isolated on their own circuit. Thanks again."
Response time10 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Serene Elec inst & Rep Services LLC
Serene Elec inst & Rep Services LLC
5.0(
6
)

Serving Lothian, MD and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

We are committed to excellence in every aspect of our business. \nWe uphold a standard of integrity bound by fairness, honesty and \npersonal responsibility. Our distinction is the quality of service \nwe bring to our customers. Accurate knowledge of our trade combined \nwith ability is what makes us true professionals. Above all, we are \nwatchful of our customers interests, and make their concerns the \nbasis of our business.

Commercial GFCI Repair
Calvert Generator
New to Angi

Serving Lothian, 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
Avatar for Callahan Electric
Callahan Electric
4.9(
32
)

Serving Lothian, MD and surrounding areas

In business since 1999

Free estimates

"Callahan Electric has been our choice for 6 years! Last week Cody replaced a ceiling mounting box, installed a new ceiling fan and replaced a wall switch. He was not happy with the quality of the provided plastic switch cover, so he installed an upgrade that matched the others in our home! Given the current situation, we were a bit apprehensive about having a contractor in our home. Our fears were put rest when Cody arrived in a mask (early, no less!) and explained Callahan's commitment to continued meticulous adherence to science-based guidelines during these challenging times. Callahan has provided stellar electrical expertise for projects ranging from a major "from the studs out" renovation of our home to installing a new ground fault receptacle at our pond and everything in between. They are, and will continue to be, our electrical contractor of choice."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+14

Recommended by100%of homeowners
...
Showing 1-10 of 96
Generator Install questions, answered by experts

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

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.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial installation costs, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas generator. 

The Lothian, MD homeowners’ guide to generator installs

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