What size generator is needed to power a house | Arc Angel Electric (2024)

Nowadays, almost everything is dependent on electricity. When there’s a power outage, you simply can’t seem to do anything productive. According to the U.S. Energy Information Administration, there is a power outage of about 1 to 2 times a year in a typical American household with each one lasting for about 3 hours. It seems pretty rare enough for a typical household. But there are some areas that experience extreme weather conditions that cause power outages that last for days or weeks. A few hours once or twice a year is okay but imagines the inconvenience of losing electricity for days or weeks! Food on the refrigerator will be spoiled, you can’t cook, you can’t watch TV or charge your devices, your pipes can be frozen, and walls will get moldy. It will be a big hassle on your part. That’s why if you live in these areas, it is always best to have backup power to avoid having to deal with the inconveniences and expenses of a power outage. It is also needed for those homes that maintain medical equipment or have livestock to take care of. Having a generator on standby is always a good idea for an emergency plan when the power suddenly goes out.

There are different generators on the market. They come in various sizes, prices, and models. They serve different purposes as well. How do you choose the best generator for your house? When buying a generator, the best defense you have is information so that you’ll get the best generator that will suit your needs at home and you don’t end up spending more than you need. Read on for some of our tips on choosing the right generator for your home. Make an informed choice so you can be sure to get the best quality for the best price and enjoy value for your money.

Things to consider when buying a generator

Frequency of power outages. As we mentioned earlier, there are areas prone to prolonged periods of power outages such as those who live in areas frequented by hurricanes, blizzards, and ice storms. There are also homes that just experience this occasionally or rarely lose power but still want a generator on standby for their peace of mind. These two groups would need different generators. It isn’t advisable for those who rarely experience power outages to spend thousands on a generator set that they wouldn’t use for a long time. It is best for them to get a portable, mid-sized, or recreational generator. Meanwhile, those who frequently lose power are well-advised to buy a sturdy generator that they can connect directly to their home’s circuit breaker panel so that it can function immediately during a power outage. They should consider getting a home standby or large inverter generator and have a transfer switch installed by a licensed electrician.

Wattage. Different generators can accommodate up to a certain amount of wattage. Those planning to buy one need to compute the wattage that their appliances would be consuming so that they can get a generator that will suit their needs. Determine which appliances you want to have running during a power outage and simply add up their wattage for you to know which generator to get. You probably won’t have all of your appliances running at the same time so you just need to include the appliances that you would be using frequently. But keep in mind that you have to include your hardwired appliances in your calculation and you have to make allowances for the power surges needed by your refrigerator, air conditioner, sump pump, and similar appliances when you start them up. Starting watts are usually higher than running watts. The wattage listed at the back of your appliances or their manuals usually pertains to their running watts. Remember, your generator must be able to handle the initial wattage demand. It’s best to consult your electrician regarding this so that you will have an accurate calculation of your wattage needs. There are heavy-duty generators in the market that can provide more than 10,000 watts which could power most of your appliances at home. But if you just need a few appliances running, then you can opt for the mid-sized generators.

What size is needed to power a house?

Each home has different power needs. Some may need to use more appliances during a power outage while some may be enough with having just a few of them running. But in general, a generator that can provide between 5,000 and 7,500 watts would be enough to power a house. It could already accommodate an air conditioner, sump pump, refrigerator, laptop, TV, and some light bulbs. This would already make for a comfortable experience during an emergency loss of power until the electricity goes back.

Why is it important to get the right size of the generator?

Getting the right size for your generator will ensure that your power needs are met during an outage. You will avoid experiencing power failures which could also damage your unit. It will also ensure that your investment will pay off because the lifespan of your generator can last a long time. It would take a long time before you need to buy a replacement. Most importantly, having the right size generator will ensure your safety. It will prevent short circuits and the possibility of fire. It will also protect your appliances from damage. We’re also talking about your health. It will help keep you comfortable and avoid heatstroke. This is why it is important for you to get the right size of generator for your home.

To sum it up, if you live in a disaster-prone area, it’s best to get a home standby, large inverter, or a portable generator to accommodate your power needs during an emergency. These types of generators can provide the wattage that you need to have essential appliances running efficiently when the power goes off. It is always best to consult with your trusted electrician before buying one to get professional advice regarding the right size generator for your house.

What size generator is needed to power a house | Arc Angel Electric (1)

Categories:Electrical Services

What size generator is needed to power a house | Arc Angel Electric (2024)

FAQs

What size generator is needed to power a house | Arc Angel Electric? ›

What size generator for a house? You can run the most critical household equipment with a generator rated at 5,000 to 7,500 watts. These include things like a refrigerator and freezer and lighting circuits. A generator with around 7500 running watts can run all these appliances at once.

What size generator do I need for an all electric house? ›

For homeowners wanting the ultimate entry-level whole-house standby, a 22kW is a perfect choice to reap all of the benefits of a whole-house generator over a regular home standby. A generator in the 27-36kW range is perfect for most homes since it replaces 75% of the 200 amps coming into your electrical panel.

Will a 7500 watt generator run a house? ›

Most homes, though, benefit from a built in home backup generator. Most will benefit from 7500 watt to 9000 watts. If you have a smaller home or RV, a 4000 watt generator can be a good choice for you. Built in models are beneficial because they are more powerful and easier to use.

What size portable generator do I need to run my whole house? ›

500 to 3,000 Watts: Recreation, power tools, small appliances, lights. 3,100 to 6,000 Watts: Recreation, heating and cooling, mid-size appliances. 6,100 to 10,000 Watts: Emergency power, heating and cooling, large appliances, water heaters. 10,100 Watts and Above: Emergency power and whole home.

What size generator do I need for a 2000 square foot house? ›

Selecting a generator with a capacity of 15,000 watts is recommended to adequately power a 2,000 sq ft house, including essential appliances and systems. A generator this size ensures reliable backup for most homes' critical needs.

What can a 8000 watt generator run? ›

It can power up household appliances, like refrigerators, televisions, sump pumps, and even 1500 - 2000 watts of an air conditioner.

What can a 10,000-watt generator run? ›

But what will a 10000-watt generator run? You can operate the freezer, refrigerator, lights, sump pump, and window AC, which typically require high power. However, the total number of appliances you can run at the same time will depend on the wattage consumption of each.

What can a 9500 watt generator run? ›

At 12000 starting watts and 9500 running watts, this unit can handle it all in an outage – lights, refrigerator, modem/router, security system, window AC, furnace blower, TV, computer, phone charger and more.

Will a 9500 watt generator run central air? ›

A 10,000-watt portable is recommended. 5-ton (60,000 BTU) central AC: 9,500-12,000 watts. Opt for a 12,000-watt portable generator.

How many appliances can a 7500 watt generator run? ›

With a 7500-watt generator, you can expect to charge almost all the essential household appliances, such as air conditioners, refrigerators, sump pumps, light bulbs, and TVs.

How big of a generator do you need for a 2500 sq ft house? ›

2,000 to 3,000 square feet: Go with a 15,000 to 22,000-watt unit for a moderately sized home. This will allow you to run most appliances, A/C units, sump pumps and other common home systems. 3,000 to 5,000 square feet: For larger homes, choose a 22,000 to 32,000-watt generator.

What is the best type of generator for home use? ›

Whole house generators (home standby generators) are the best generators for home use. They are designed to provide ample power for your appliances and HVAC systems. Portable generators are often used on job sites to power air compressors, nail guns, saws, hammer drills and other equipment.

What size generator do I need for a 1500 sq ft house? ›

If budget is a concern, an alternative is a smaller standby generator sized to run essential household circuits only. For a 1,500 sq ft house, an 8-14kW unit can power basics like the refrigerator, freezer, furnace, lights, and select outlets.

How much does it cost to install a Generac whole house generator? ›

Depending on the size of the unit, your home's specifics, and other factors, the cost to install a Generac generator can be anywhere between $1,500 and $5,000.

Will a 20k generator run a house? ›

20,000 watts, and certainly 22,000 watts, can power just about everything under the sun in the average home, including all of the things mentioned above plus a washer and dryer, microwave, and other appliances.

Can a generator be too big for a house? ›

You, however, need to ensure that you choose the right generator size that meets your household needs. If you buy an undersized unit, it will strain to meet your power demands, shortening its lifespan. An oversized unit will result in unnecessary power loss and can damage your appliances.

How do I calculate what size generator I need for my electric bill? ›

Add up the total watts and add your calculator results to determine how much power your home is likely to leverage during an outage. Divide the total watts by 1000 to find kilowatts and add a 20% safety margin. This final number is your minimum Generator Capacity requirement for your home.

Can I run my whole house on a 12000 watt generator? ›

For a home using average size energy consuming devices, a 12,000 watt generator should be sufficient to meet the homes essential energy needs.

How big of a house will a 22kW generator run? ›

What size generator should I buy? A 22 kw generator will power a 3-4,000 square foot house. It will run the HVAC equipment and the washer or oven at the same time.

Will a 24 kw generator run a whole house? ›

Whole House GeneratorS – 22 to 48kW

If you're just looking for a straightforward system that covers everything and does not want to pick which circuits you really can't do without or have multiple panels in different areas of the home, making it difficult to centralize one backup emergency panel, then this would be it.

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