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What Does A Whole House Generator Cost?

What Does A Whole House Generator Cost?

During an electrical storm, a generator can keep your house powered for days at a time. A typical whole house power supply costs between $3,00 and $25,000. Are Average Costs (depending on power needs) spending $10,500.

When the lights go out, what do you think about first? Your refrigerator? Your children? Your pets? Your spouse? Your car? Your phone? You’re probably thinking about something else entirely. But whatever you’re thinking about, chances are good that you’ll be able to get through the day without having to worry about whether or not you’ve got enough electricity to keep your fridge running. House generator installation costs do vary across the country as well.

What Are Whole House Generator Cost’s

The price of whole house generation depends on a variety of factors including regional electricity rates, local utility costs, and the number of appliances used. When the power goes out during a storm, people often panic and head straight to the store to purchase expensive emergency supplies. However, if they had purchased a generator before the storm hit, they would not have needed to spend money on additional supplies. A generator is also useful for those living in areas where the power regularly fails due to storms or other natural disasters.

Different Generator Type’s  and Size’s

Generating electricity is not easy. In order to produce enough energy to run a household, a large number of components must work together efficiently. A good example would be a car engine. When we drive our cars, we do so because the engine produces sufficient power to move the vehicle forward. However, if one component fails, such as a spark plug, then the engine may not start. Similarly, if any part of the electric grid fails, then the entire system cannot function properly. For instance, if a transformer fails, then the entire grid might go down.

Portable generators are what most folks have as they tend to be the cheaper option for most home owners in a power outage.


Portable Generator

A portable generator (mobile unit) is the least expensive option when searching for an alternative for home power. It is inexpensive, does not need a transfer switch, and involves minimal installation costs. These units come with optional fuel types, from liquid propane to diesel fuel to gasoline.

These units tend to run just the basics on the house, such as a pump (depending on electricity needed), Refrigerator, and a few lights. This will not normally run the entire house during a power outage. But they are a great backup power source for any homeowner during a power outage. It offers a wide range of uses, such as camping and power for an RV.


Standby Generator

These units will be the more expensive option as they will be your power station when you lose power from the grid. These units tend to be called whole-home generators, which are installed based on what you need for power from the electrical grid.

These units will need professional installation and be wired to an automatic transfer switch so that additional labor costs will be involved. An Automatic Transfer switch is like heaven during a storm; There is a beautiful feeling knowing the power comes back on during a storm.


Cost Difference

As mentioned above, the generator installation will be the difference between the two power supplies have different needs, such as running medical equipment during a blackout. And in today’s day and age, the internet needs to be restored ( for you to have peace of mind ) for the kids. I’m just kidding…

Typically, the real difference between the two options is what essential appliances you, the homeowner, want. What is the home’s energy consumption and the power requirements for each home will play a role in what is the best option for the homeowner.



A backup generator will give the homeowner peace of mind, knowing that the needs, whatever they may be, will still be met. The average size of the generator will vary depending on the needs, as stated above, and fuel source and fuel supply will also run across the country. During an electrical outage, you need to ask yourself what is necessary that you would typically get from the utility grid.

Do you need a washing machine? Medical equipment? Or do you want the essentials like lights and a refrigerator? Contact Us For all your generator needs.


Appliance Wattage Guide 

Appliance/EquipmentRunning Wattage
Refrigerator/Freezer600 – 800
Electric Range (one element)2500
Toaster1100 – 1700
Hot Plate1250
Coffeemaker400 – 800
Electric Oven5000
Television100 – 350
Personal Computer500 – 2000
Hair Dryer1200 – 1500
Vacuum700 – 1400
Space Heater1250
Table Lamp150
Electric Furnace5000 – 25000
Heater (radiant)1300
Central Air Conditioning2000 – 4000
Water Heater3000 – 4500
Water Pump1000 – 2000
Window Air Conditioner600 – 1500
Outdoor Lighting500 – 1000
Sump Pump1500

How to Calculate the Total Wattage You Need for a Generator:

  1. List all the appliances and systems you want to power with your generator.
  2. Look up the running wattage for each item on your list. This information should be listed if you have the manuals for your appliances and systems. If not, you may be able to find the wattage information online.
  3. If any of the appliances on your list have motors (e.g., a refrigerator, air conditioner, or washing machine), you must calculate the starting wattage. To do this, use the formula: Running wattage (R) + Starting wattage (R x 3) = Total wattage needed. For example, if your refrigerator has a running wattage of 600 and a starting wattage of 1800 (600 x 3), you will need 2400 watts to power it.
  4. Once you have the running and starting wattage (if applicable) for all the appliances and systems on your list, add them up to get the total wattage needed.
  5. Choose a generator rated for at least the total wattage needed. If you plan to use multiple appliances simultaneously, you may want to choose a generator with a slightly higher wattage rating to ensure that you have enough power.


Here is an example of how to use this process to determine the total wattage needed for a generator:

  1. List of items to power: Refrigerator (running wattage 600, starting wattage 1800), microwave (running wattage 1200), television (running wattage 150), and a few light bulbs (running wattage 60 each).
  2. Running wattage for each item: Refrigerator 600, microwave 1200, television 150, light bulbs (60 x 4) 240.
  3. Starting wattage for the refrigerator: 600 + (600 x 3) = 2400.
  4. Total wattage needed: 600 + 1200 + 150 + 240 + 2400 = 4590 watts.
  5. Choose a generator rated for at least 4590 watts or slightly higher if you use multiple appliances simultaneously.

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