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Verified Reviews for Generator Install pros in Callaway, MD

*The Angi rating for Generator Install companies in Callaway, 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 Callaway, 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 October 21, 2025

Find Generator install pros in Callaway

Calvert Generator
New to Angi
Generator - Install - For Business

Serving Callaway, 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
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Avatar for Paradise Construction
Paradise Construction
4.4(
173
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Callaway, MD and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"I ended up hiring someone else who could install a ceiling fan as Paradise Construction was afraid of needing to tear up a large section of the ceiling and I didn’t want to create additional work and expense."
Recommended by85%of homeowners
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Avatar for Sam & Sons Services
Sam & Sons Services
4.0(
144
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Callaway, MD and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"They reattached the fusebox and gave me a quote to replace the fuse box which was in line with the special they were running.
"
Look for one of our many trucks out and about in your area!
Chandeliers, wall lights, canned lightins, we do it all!
Ceiling fan installation
Tranform yoour Bathroom!
Faucet and shower head repair and installation!

+4

Recommended by78%of homeowners
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Avatar for Mason Electrical Services
Mason Electrical Services
4.3(
12
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Callaway, MD and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"He was on time. He was very professional and informative. He was very knowledgeable. The work was neat and he cleaned up after himself."
Recommended by83%of homeowners
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Power House Electric
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Callaway, MD and surrounding areas

In business since 2006

Emergency services offered

Credit card accepted

"He was fabulous and did a great job. It was a 20kw generator. He was very professional and came in uniform. He was thorough in discussing my options. He was able to install this in my basement instead of hanging it outside. The main reason why I'd recommend him so highly is that the unit I have is a big generator. I have it setup to run on propane. It turned out that the gas company did not lay the line within the county codes. Jim caught that and notified that. They argued with him, but the county came out and determined that it was potentially dangerous. The gas company had to redo the installation for free. He could of just finished the installation, and I would not have known the distance."
Recommended by100%of homeowners
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Avatar for JW Electrical Service
JW Electrical Service
4.5(
2
)
Generator - Install - For Business

Serving Callaway, MD and surrounding areas

In business since 2010

Free estimates

Emergency services offered

JW Electrical Service, master electrician committed to excellence in every aspect of our business. You can count on us for all of your home electrical needs. From standard maintenance, to installations to security cameras. Please give us a call today or click book now for an instant appointment.

OUR WORK
OUR WORK
OUR WORK
OUR WORK
Response time1 day
Recommended by100%of homeowners
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Power House Electric
2.0(
13
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Callaway, MD and surrounding areas

In business since 2006

Free estimates

Credit card accepted

Since 2006 Power House Electric has been your best choice for electrical services. From residential remodeling, new construction and service to commercial and industrial applications, our experience and attention to detail sets us above the rest. We work evenings and weekends at no additional charge to our customers. If you are interested in a standby generator, we are a Generac factory authorized dealer/installer and service contractor. Call us today!\n

Recommended by91%of homeowners
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Avatar for Colatos Electric
Colatos Electric
New to Angi
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Callaway, MD and surrounding areas

Emergency services offered

Small jobs welcome

Credit card accepted

At Colatos Electric, we provide professional and reliable residential electrical services throughout Stafford and surrounding areas. With over 6 years of hands-on experience in commercial and residential electrical work, we specialize in panel upgrades, generator installations, EV chargers, lighting, troubleshooting, and service upgrades.\n\nWe take pride in clean, code-compliant installations and clear communication from start to finish. Our goal is to provide safe, high-quality work that homeowners can trust.

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Generator Install questions, answered by experts

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

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.

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.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

The Callaway, MD homeowners’ guide to generator installs

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

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