How Many Amps Does An Oil Heater Use? (All Answers)

The number of amps that your oil heater uses depends on the power setting of the heater and the type of voltage.

The power setting is measured in Watts and is usually marked very clearly on the packaging. The number of watts, e.g. 1500 W, is often part of the brand name of the appliance.

The type of voltage isn’t always so obvious. It is usually about 120 V or 240 V. The Volts are also marked on the packaging and will be in the specifications. You just have to hunt for the number.

Amp Usage Of Common Oil Heaters

The least powerful oil-filled heaters are 500 W. The most powerful go up to 1,500 W.

Many models fall in between these ranges. And most modern appliances have several different power settings.

Amp Usage Of Common Oil Heaters

This table shows how many amps that the most common oil heater use:

5004.2 Amps2.1 Amps
7005.8 Amps2.9 Amps
8006.7 Amps3.3 Amps
10008.3 Amps4.2 Amps
150012.5 Amps6.3 Amps

How To Calculate The Amps Your Heater Is Drawing

But what if your heater has a more unusual power setting e.g. 600 W or 900 W.

The calculation of how many amps it draws is quite easy.

The number of Amps equals the number of Watts divided by the number of Volts.

In other words, this is the simple formula:

Amps = Watts / Volts

Amps Drawn By Most Levels Of Heater Wattage

If you have an unusual setting and want to double-check your calculation, we’ll make it easy for you.

I’ve broken down the Wattage into different sections. Just scroll down until you find the setting that you need.

500 Watts or under

1000.8 Amps0.4 Amps
2001.7 Amps0.8 Amps
3002.5 Amps1.3 Amps
4003.3 Amps1.7 Amps
5004.2 Amps2.1 Amps

Up to One Thousand Watts

6005.0 Amps2.5 Amps
7005.8 Amps2.9 Amps
8006.7 Amps3.3 Amps
9007.5 Amps3.8 Amps
10008.3 Amps4.2 Amps

Up to 1,500 Watts

11009.2 Amps4.6 Amps
120010.0 Amps5.0 Amps
130010.8 Amps5.4 Amps
140011.7 Amps5.8 Amps
150012.5 Amps6.3 Amps

1500 Watts to 2000 Watts

160013.3 Amps6.7 Amps
170014.2 Amps7.1 Amps
180015.0 Amps7.5 Amps
190015.8 Amps7.9 Amps
200016.7 Amps8.3 Amps

Electricity And Costs

We have a separate article that explains how much electricity your oil-filled heater is using.

Are you wondering how the number of Amps drawn impacts how much you’re paying?

Of course, now we have another variable to add to the equation i.e. the cost of electricity in your area.

Dean Casey
About Dean Casey

Hi, I'm Dean Casey, the founder and chief editor of

With over 15 years of experience in the HVAC industry, my passion is helping homeowners achieve optimal comfort and energy efficiency in their living spaces. As a certified HVAC technician and consultant, I have developed a deep understanding of home heating systems, insulation, and energy-saving practices.

I started this blog to provide well-researched, practical advice to homeowners looking to improve their home's heating performance and reduce energy bills. Whether it's comprehensive guides, hands-on product reviews, or expert tips, my goal is to share valuable information with you, my readers.

I enjoy spending time with my family and exploring the great outdoors when I'm not busy writing and researching. I'm also an avid DIYer, always eager to tackle new home improvement projects and share my experiences with you.

If you have any questions or comments about home heating, please don't hesitate to reach out through the contact page on the website. I'm always happy to help!

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