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TRUSTED BY LANSDOWNE, MD HOMEOWNERS

  • Average homeowner rating star icon4.1
    Average homeowner rating
  • Verified reviews icon14
    Verified generator installs reviews

Top-Rated Generator install pros in Lansdowne - Updated Nov 2026

K&K Electric
4.9(
36
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Lansdowne, MD and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"L I put request on Home advisor/Angie's list. Out of all the request this is the only company that responded to my request. Not only did he respond within 30 minutes, he came out the same day, installed my ceiling fan, and finished everything up within one hour. Most kind efficient, professional, and very knowledgeable company. I would definitely use them anytime and every time. Thank you so much, Kevin."
Response time5 hrs
1 neighbors recently requested a quote
Recommended by87%of homeowners
Stiffler's Electric Service
4.8(
102
)
Portable Generator - Install

Serving Lansdowne, MD and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"David Stiffler replaced a thermostat for my heated floor in the master bathroom. Because the old stat was discontinued, he had to research and find an alternative. David found a well priced substitute that worked, but not as efficiently as the original. When I told David Iâ d found a different model to try, he was more than willing to come back and replace the other one. After he installed the second stat, he returned the first and refunded the cost. Aside from doing a professional job, David is just a very pleasant person to be around. His primary concern was my satisfaction and I really appreciated that. I highly recommend Stifflerâ s Electric for its professionalism and for a pleasant customer experience!"
Recommended by100%of homeowners
Avatar for Electrical USA, Inc.
Electrical USA, Inc.
4.3(
42
)
Fixed Generator - Repair

Serving Lansdowne, MD and surrounding areas

Approved

In business since 1986

Free estimates

Credit card accepted

"GENERAC Maintenance and Repair. I just used Electrical USA for my home back up generator service and repair. They did a fantastic job very affordable, prompt and thorough. Definitely recommend them!"
Response time4 days
70 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for Mr. Electric of Baltimore
Mr. Electric of Baltimore
5.0(
11
)
Fixed Generator - InstallPortable Generator - Install

Serving Lansdowne, 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

13 neighbors recently requested a quote
Avatar for Artisan Electrical LLC
Artisan Electrical LLC
4.6(
21
)
Fixed Generator - Install

Serving Lansdowne, 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"
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install
Fixed Generator Install

+2

Response time1 day
9 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Clinton Electric Company, Inc.
Clinton Electric Company, Inc.
3.9(
176
)
Fixed Generator - InstallFixed Generator - Repair

Serving Lansdowne, MD and surrounding areas

Approved

In business since 1969

Emergency services offered

Credit card accepted

"They checked my generator and said nothing was wrong, that the problem was probably with the electric companies transformer. My problem still exist. The electric company sent people out to check the current coming to my house and said everything is okay. They are going to install a monitor to check what is going on when there is an outage. So as of now my generator does not come on."
The Team
 Generac Automatic Standby Generator
Dusk to Dawn Spotlights
 Electrical Panel
Trucks

+7

Response time2 hrs
52 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Horizon Services, LLC (MD)
Horizon Services, LLC (MD)
3.8(
1,464
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Lansdowne, 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.

Recommended by89%of homeowners
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Generator Install FAQs, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

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.

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

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.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

The Lansdowne, MD homeowners’ guide to generator installs

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