How much is a whole house generator?

In severe weather like a thunderstorm, a power cut usually happens. So, a whole house generator is a must-have device. Because, it can power your entire home in case of a power cut. But do you know how much it costs? The cost of a whole house generator is not only its real cost. It also includes the installation cost and the maintenance and repair cost. Let's check out together.

The real cost of a whole house generator

On average, a fuel-based whole house generator can cost around $1,000 to $6,000. Some generators can cost over $10,000. Many factors can determine the cost of a whole house generator. But the main factor is its capacity.

Capacity is the amount of electricity the generator can produce in a fixed amount of time. You should buy a generator with proper capacity with your electrical devices. The higher the capacity of the generator, the more expensive it is. So, you should estimate your electricity needs to choose a suitable generator.

In general, a large home will need a larger capacity generator than a small home. But you should make some calculations to know the exact total amount of power needs. First, you have to know the amount of power each appliance will take to start up. Then add them up and use this total amount to find a proper generator.

The installation cost of a whole house generator

Installation cost is another cost you have to consider when buying a whole house generator. You can't install a whole house generator yourself unless you're an electrician. 

The different generators will have different installation costs. But the installation cost is usually about ¾ of the generator's real cost. That means with a $10,000 generator. You may have to pay up to $7,500 for its installation. 

That's not including the case of upgrading your electrical system. Sometimes, to ensure the generator's performance, the electrician has to make some upgrades. And this may cost you a great deal. 

If you are a professional electrician, you can install the generator yourself. This can save you a lot of money. If not, don't try it because it is very dangerous.

The maintenance and repair cost of a whole house generator

The cost of a whole house generator also includes its maintenance and repair costs. This cost is not as much as the generator cost and installation cost. But it is still quite a great expense.

After installing a whole generator, you have to maintain it. If you leave it inactive for a long time, it may not run properly. Thus, you will have to run it at least once a week. It will cost you about $5 for the fuel each time. 

Each year you have to pay about $260 for generator maintenance. This cost doesn't include fuel costs during power outages. 

Besides, the generator needs intensive inspection and maintenance every 6 to 12 months. You will have to hire a qualified technician to do this. The cost can be between $65 to $85 per hour. If the generator needs any repair, you have to pay more. On average, a minor repair will cost from $75 to $300.

The best whole house generators 2021 

The overall cost of a whole house generator is rather high. Therefore, you should choose a good generator. You can consult the 4 best whole house generators below:

1. Generac 7043

Model 7043 of Generac Guardian series is one of the best whole house generators. It can run with both natural gas and liquid propane. The capacity of this generator is impressive. 

When running on liquid propane, it can produce up to 22,000 watts of electricity. If you supply it with natural gas, the capacity can be 19,500 watts. With this huge amount of electricity, you can operate all the electrical devices of a large house.

This generator is also equipped with a multilingual LCD. You can check the battery situation as well as maintenance time by this display. There is also the mobile link remote monitoring system. It allows you to keep track of the operating generator from a distance.

Generac 7043 Home

Generac 7043 Guardian series

2. Generac 7033

If you are looking for a good generator for your small home, choose this Generac 7033 Guardian Series. It has all the advantages of the 7043 models but a smaller capacity. Its capacity is 11,000 watts when running on liquid propane and 10,000 watts when running on natural gas. 

It also has a multilingual LCD and remote monitoring system that help you check easily.  Because of the less capacity, the price of this generator is also cheaper than the 7043 model

3. Champion Power 100294

Fuel consumption is also a criterion to evaluate the effect of a generator. The Champion Power Equipment 100294 is one of the most fuel-efficient generators.

It only needs 2.6lb of fuel per hour to produce 14,000 watts of electricity when running on liquid propane. If you don't have a natural gas supply in your house, this Champion generator can save you much money for fuel.

With a capacity of 14000w, this generator is suitable for small and medium-size homes. Besides, it can start without any warming kit even when the temperature is -22°F - 104°F. So, this generator is suitable for extremely cold areas.

Champion Power Equipment 100294

Champion Power Equipment 100294 14KW

4. Kohler 20RESCL

The most remarkable advantage of this generator is the long-operation designed engine. It can operate stably for many hours, even all day long.  Thus, it is usually the top choice of hospitals or airports.

Another benefit of this generator is the quick response. It only needs 10 seconds after the power outage to reach full running mode. 

You can also track the operation of this generator by its online monitoring system. The largest wattages produced by a Kohler 20RESCL can be up to 20,000 watts. This is a great generator for larger homes and commercial use.

Kohler 20RESCL-100LC16 Air-Cooled

Kohler 20RESCL w. Commercial Grade Engine


Now you may have known about the overall cost of a whole house generator. To choose the right one, consider your real situation first. Then you can consult the best generators listed above.  A suitable generator will save you money. Moreover, it can save our natural resources and protect the environment.

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James Andrews
James Andrews
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