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What Size Generator Do You Need? A Homeowner’s Guide to Backup Power

Power outages are becoming more frequent across the United States, driven by severe storms, an overburdened grid, and even wildfires. For homeowners in New Orleans, LA, power loss isn’t just inconvenient; it disrupts comfort, safety, and everyday life.

That’s where a home backup generator comes in. A generator ensures peace of mind, keeps your family comfortable, and safeguards essential needs during an outage. This guide will help you understand what size generator you need, so you can make an informed decision. Plus, as New Orleans’ trusted generator experts, H&E Comfort Services is here to ensure a smooth installation every step of the way.

Full Backup vs. Partial Backup Power: Key Decisions to Make

The first step to choosing a generator is deciding whether you want a full backup system or one that supports only essential circuits.

Whole-House Generators

A whole-house generator is designed to keep everything running. This includes essentials like your HVAC, kitchen appliances, lighting, and even luxuries like hot water and entertainment equipment. These systems often have higher capacities, offering seamless backup power without compromising comfort.

Partial Backup Systems

If you’re working with a smaller budget or just need the basics, a key-circuit or essential-load generator might be a better fit. These systems are designed to power critical needs such as:

  • Medical devices
  • Refrigerators and freezers
  • Lighting
  • Wi-Fi routers and communication devices

Tip: Consider how long typical outages last in your area. If New Orleans’ unpredictable weather is leading to extended outages, investing in more comprehensive coverage may be worth the cost.

Understanding Generator Ratings & Terminology

Navigating the technical specs of generators can be overwhelming. Here’s a quick breakdown:

Running Watts vs. Surge Watts

  • Running watts: The continuous power supply a generator provides.
  • Surge (starting) watts: Extra power needed to start motor-driven appliances like air conditioners or refrigerators.

Standby vs. Portable Generators

  • Standby generators: Permanently installed systems that automatically kick in during an outage. These are highly reliable and integrate directly with your home’s electrical system using a transfer switch.
  • Portable generators: More budget-friendly but require manual setup and operation. While portable units offer flexibility, their limited capacity might not suffice for a fully equipped home.

How to Calculate Your Power Needs

To determine the right generator size, you’ll need to calculate how much electricity your household requires during an outage. Follow these steps:

  1. Make a List of Critical Appliances

  Consider must-have items such as:

  • Furnace blower
  • Refrigerator/freezer
  • Sump pump
  • Wi-Fi router
  • Lights
  1. Find Wattage Info

  Appliance wattages are usually listed on labels or included in owner manuals. Alternatively, you can refer to common wattage charts.

  1. Add Up Running Watts

  Add the wattages for all your critical appliances.

  1. Include Starting Watts

  Identify the highest starting wattage (often an appliance with a motor, like an AC unit). Add this to your running watts.

  1. Add a 20% Buffer

  Account for fluctuations and potential future usage.

For example, if your running wattage totals 5,000 watts and your highest starting wattage is 2,000 watts, you would need at least a 7,000-watt generator. Adding a 20% buffer brings the requirement to 8,400 watts.

Factors to Consider When Choosing a Generator

Fuel Type

Generators typically run on natural gas, propane, diesel, or gasoline. For New Orleans homeowners:

  • Natural gas is reliable and never runs out, assuming you remain connected to the supply.
  • Propane offers longer storage times, ideal for standby units.
  • Gasoline and diesel are more common for portable generators but require proper storage and regular replenishment.

Load Management

Load-shedding panels can help prioritize appliances, ensuring that essential systems like your HVAC always receive sufficient power.

Future Expansion

Planning to add an EV charger, pool pump, or hot tub? Select a generator with adequate capacity to handle these future upgrades.

Local Regulations

Check local New Orleans permit requirements and HOA regulations to avoid surprises during installation.

Professional Installation by H&E Comfort Services

At H&E Comfort Services, we make the process as smooth as possible. Here’s what your installation will involve:

  1. Initial Assessment: Our experts evaluate your home’s energy needs, layout, and fuel supply.
  2. Site Planning: Choose an ideal location for your generator that complies with local codes and minimizes noise.
  3. Wiring: Install an automatic or manual transfer switch to connect to your electrical system.
  4. Fuel Hookup & Testing: Ensure the generator runs efficiently and safely.

Maintenance Matters

Regular maintenance is essential for reliability. This includes oil changes, battery checks, and load tests to keep your generator running smoothly.

Your Questions Answered

Can I install a generator myself?

DIY installation is strongly discouraged. Improper setup can lead to electrical hazards, void warranties, and violate local codes.

What about noise levels?

Modern standby generators have noise ratings as low as 65 dBA, equivalent to a normal conversation. Proper placement helps minimize disruptions.

How long does it take to restore power?

A standby generator restores power within seconds of an outage, thanks to its automatic transfer switch.

How much fuel does it use?

Fuel consumption varies, but a typical 8–12 kW generator burns about 1–2 gallons of propane or natural gas per hour at 50% load.

Get Power-Prepared with H&E Comfort Services

Choosing the right generator ensures your home remains safe, comfortable, and functional during an outage. Whether you need partial or whole-house backup power, H&E Comfort Services is here to help.

Contact us today for a free generator sizing consultation and guarantee your peace of mind.

Generator Installation: Ensuring Power Backup for Your Home

Few things are more frustrating than losing power at home. You can’t charge your devices, cook food, or use other appliances without electricity. While some outages only last a few minutes, others could leave you in the dark for several hours. 

Professional generator installation is the best way to avoid this problem. Generators provide power when the grid goes down. This way, you don’t have to worry about the food in your refrigerator going bad or essential devices not working. 

Our H&E Comfort Services team understands the benefits of having a backup power source you can always rely on. We provide installation services for multiple types of generators and can help you choose the perfect setup for your lifestyle, budget, and needs.

Why Should You Install a Generator?

Have you ever been without power for more than a few hours? If so, you know how difficult it can be to get things done, especially at night when the lights go out.

Since a generator brings power to your home when your primary power source fails, you’ll have peace of mind knowing you’ll never experience interruptions. You may not realize just how important having this assurance is until it’s gone.

Having a generator at the ready is crucial if anyone in your household relies on medical devices that need a constant power source, such as a chair lift, CPAP machine, or oxygen concentrator. Also, if you work from home, you can rest easy knowing a local outage won’t impact your workday.

Regardless of your needs, having a constant source of power means never having to look for flashlights in the dark or skipping a hot meal.

Pick the Right Type of Generator

Not two homes are the same, and neither are their electrical needs. When considering generator installation, you first need to decide which type is best for your needs:

  • Portable generators: These are a more affordable option that you can move around from room to room. Their small size makes them best for minor power needs, like charging devices. 
  • Whole-home standby generators: These are best for keeping the whole house powered during an outage. They automatically kick on when your primary power source fails.
  • Natural gas generators: These use your natural gas supply to power on, which means you need to connect them to your gas line. 

Get a Reliable Power Backup for Your Home With H&E Comfort Services

Hiring a professional is the best way to ensure a successful generator installation. Our H&E Comfort Services team follows a meticulous step-by-step process for an efficient installation. 

If you want a whole-home generator, we first install a transfer switch to connect the unit so that it provides seamless power backup when the grid experiences an outage. Then, we connect the generator using proper grounding techniques to create safe electrical connections and a system you can count on. 

Are you ready for your generator installation? Call 504-800-6261 to schedule a service with H&E Comfort Services!

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