Block Heaters

Willie Watson
20 min readMay 12, 2024

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Every winter, we face the chilling reality of frozen car engines. And if you’re tired of the constant waiting game to get going on your morning commute, a block heater might just be your new best friend. In this article, we explore the best block heaters in the market, so you can say goodbye to that dreaded winter start-up time without breaking the bank. So sit back, let us do the legwork, and get ready to make every morning a breeze.

The Top 15 Best Block Heaters

  1. ABN 4x5 inch Car Battery Oil Pan Heater Pad — Keep your engine running smoothly in cold weather with the ABN Car Engine Warmer Stick On Oil Pan Heater, a convenient and efficient block heater to improve lubrication and extend engine life.
  2. Kat’s Engine Freeze Plug Heater — Prevent Cold Start Damage — Kat’s Engine Heater Freeze Plug 11401 efficiently pre-heats engine blocks, allowing for better lubrication, electric, and fuel system performance in cold weather.
  3. Efficient Block Heater for Engine Pre-Heating — Kats Freeze Plug Heater 11427: Pre-heat your engine with ease, reducing wear and tear, and save time with its user-friendly installation.
  4. Zerostart 120V Block Heater for Quick Winter Starts — Zerostart 350–0030 Engine Block Heater efficiently tackles cold-weather starts, lubricates engine parts, and reduces emissions, earning a perfect 5.0 rating from satisfied customers.
  5. JEGS 51123 Block Heater for Easy Installation — Upgrade your engine performance with the JEGS 51123 600W 1 3/4 in. Core Plug Block Heater — perfect for Chevy Big Block & Ford FE models from 1965–1989, now featuring a grounded 4 1/2ft power cord.
  6. Energy-Saving Block Heater Controller with Automatic Temperature Adjustment — Experience energy savings and ultimate cold weather vehicle starting with the Power Badger Engine Block Heater Controller 1800US — the innovative solution that pays for itself in just one season!
  7. Zerostart Freeze Plug Engine Block Heater for Chevrolet GMC — Achieve quick winter starts and protect your Chevrolet GMC engine from wear with the CSA-approved Zerostart 3100059 Freeze Plug Engine Block Heater, featuring a 5' cord and 120V/15A (Type A) plug.
  8. Engine Heater Plug for 1994 GMC Sonoma — 2WD, 4 Cylinders, 2.2L FI OHV, 134 — Block Heater 11435 — Kat’s Freeze Plug Heater 11435: Keep your engine running smoothly in cold weather with this high-quality, reliable block heater solution for quick, efficient starts.
  9. Magnetic Heater for Engine Blocks and Oil Pans — The Kat&s Magnetic Heater 1190 is a versatile and powerful solution, providing efficient fluid heating for vehicles and machinery with ease, thanks to its magnetic base and compatibility with multiple surfaces.
  10. Kats Engine Heater Cartridge for Efficient Block Heater Performance — Efficiently heat your engine, interchangeable with original equipment, and compatible with multiple applications, all while requiring no draining of coolant with the Kats Engine Heater Cartridge, 11815.
  11. Zerostart & Temro Block Heater for Efficient Circulation — Keep winter’s icy grip at bay with the Zerostart & Temro 3308003 Circulation Heater, a rugged and reliable block heater that ensures your vehicle starts easily even in the coldest conditions.
  12. Engine Heater for Dodge Ram 2500 & 3500 — Ensure a quick and easy start in cold weather conditions with the Standard HPC1 Engine Heater, designed to warm engine block, fluids, and cabin, while prolonging engine component life in harsh weather.
  13. Kats Freeze Plug Heater: Efficient Block Heater for Cold Weather Protection — Protect your engine from harsh winter conditions with the Kats Freeze Plug Heater 11419 — the ultimate solution for cold weather starting.
  14. Kat’s Engine Heater Freeze Plug 11814: Protection for Cold Weather Starting — Keep your engine running smoothly in cold weather with Kat’s Engine Heater 11814, a high-quality and reliable block heater designed to OE standards for superior protection and performance.
  15. Thermo Scientific 96-Well ELISA Block Heater — The Thermo Scientific Block Heater (1 x 96-Well Elisa) is an efficient and convenient accessory for use with the Thermo Scientific Digital and Touch Screen Dry Baths/Block Heaters, offering a single 96-well plate option for high-quality Elisa samples.

As an Amazon Affiliate™ I receive compensation through qualified purchases at no cost to you

Reviews

ABN 4x5 inch Car Battery Oil Pan Heater Pad

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The winter months can be tough on your car’s engine. Think about it, those cold temperatures can make the lubrication process harder, causing the engine and transmission fluids to thicken and not circulate as smoothly. That’s where the ABN Car Engine Warmer comes in.

This handy little heater pad is just what you need to keep your vehicle going smoothly in the winter. The heater pad warms up to a nice 194 degrees Fahrenheit (90 C) and it does so quickly, ensuring your engine oil stays thin and circulates efficiently.

Aside from keeping your engine in tip-top shape, it also helps your battery last longer, and that’s a two-in-one win if you ask me. It’s super easy to install and despite its small size, it packs a punch in terms of power, using only 120 volts and 250 watts to get the job done.

However, one downside I’ve noticed is that if you’re working with a larger engine, the pad might not be big enough. But all in all, it’s a reliable little tool that’s earned a solid 4.7 rating from users.

Kat’s Engine Freeze Plug Heater — Prevent Cold Start Damage

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I tried out the Kats Freeze Plug Heater during a particularly harsh winter. The cold air outside made it tough to get my car up and running without a lot of noise and effort. This little guy proved to be a lifesaver.

After plugging it directly into the coolant, my engine block started to heat up, giving me the smooth and silent start I had been hoping for. It’s not just about starting the engine, but the added comfort and peace of mind it gave me was priceless.

However, the process of installation did require a little mechanical aptitude. It also seemed that the product was not ideal for all vehicle models, as some specifications were mentioned.

A few friends who tried the same model experienced some problems with theirs. One mentioned that it stopped working after just two days, while another reported it burnt out within a day or two. But when I used it, I had no such issues.

Also, I found out that there was a need to plug the heater out before starting the vehicle to prevent any damage. This was a valuable piece of advice I wished I’d known beforehand.

Overall, the Kats Freeze Plug Heater proved a handy solution to my cold weather vehicle problems. With a little bit of know-how and attention to detail, it can be a reliable and effective way to solve similar issues. It’s just a matter of selecting the right one and being patient.

Efficient Block Heater for Engine Pre-Heating

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The Kats Freeze Plug Heater is a reliable and efficient block heater designed to pre-heat your engine, making it easier to start during cold weather. With direct installation into the engine block, this heater keeps coolant at an optimal temperature for optimal performance.

The heater weighs 1 pound and measures 7.75 inches long, 4.5 inches wide, and 2.5 inches thick. However, installation requires mechanical ability and the heater itself is not thermostatically controlled.

Zerostart 120V Block Heater for Quick Winter Starts

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The Zerostart Block Heater is a must-have addition for those driving in freezing temperatures. Not only does it ensure quick winter starts, but it also reduces engine wear, improves lubrication, and protects the engine from cold weather starts. With an impressive 58mm diameter, this heater easily fits under the hood of various vehicles.

The 6-foot cord included allows for easy connection, while the plug type is compatible with most standard outlets. Additionally, the 120-volt, 15-amp plug ensures reliable performance.

Whether you own a Chrysler, Dodge, Kept, Kia, Mitsubishi, or Hyundai, this versatile block heater is designed for your specific make and model. CSA approved and made with premium quality materials, this heater is a great investment for maintaining the health and longevity of your engine all year round.

JEGS 51123 Block Heater for Easy Installation

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I recently had the chance to try out the JEGS Core Plug Block Heater, and let me tell you, it made a noticeable difference in my old Big Block Chevy’s performance. This heater is a lifesaver for those of us who have to deal with hard-to-start engines in colder temperatures.

The installation process was a breeze, thanks to the user-friendly design. I was up and running in no time, and this little heater made all the difference. It fits perfectly into the core plug hole and even comes with a convenient 4 1/2 ft. grounded power cord.

Of course, there are a few things to keep in mind. It’s essential to follow the manufacturer’s instructions carefully, and it may not be the best option for every vehicle. But, for those of us who drive classic cars with carbureted engines, this heater is an absolute game-changer. I highly recommend it for anyone looking to improve performance and make their mornings a little warmer.

Energy-Saving Block Heater Controller with Automatic Temperature Adjustment

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The Power Badger from Bostic Motors is a game-changer when it comes to saving energy and money during cold weather. This impressive piece of technology automatically adjusts the firing time based on the outside temperature, ensuring your vehicle is always ready to go when you need it.

Its two modes, Timed Ready and Maintain Ready, provide versatile control options, while its rugged, water-resistant design is ideal for harsh winter conditions. Not only does it cater to block heaters, battery warmers, and pad or tank heaters, but it also comes with a powerful 1800-watt capacity. Topping it all off, the 7-day programmable feature allows for even more user convenience.

Reviews from satisfied customers praise the product’s heavy-duty construction and significant energy savings, making the Power Badger a must-have for frosty climates.

Zerostart Freeze Plug Engine Block Heater for Chevrolet GMC

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I recently used the Zerostart Block Heater for my 2012 Chevrolet Silverado. Winter starts have always been a struggle for me, but with this heater, I experienced a significant improvement in engine performance. The installation was a breeze, and the included 5-foot cord made it easier to locate an outlet for my driveway.

One feature that stood out is the plug type, which is 120 Volt, 15 Amp (Type A). It’s CSA approved, which gave me a sense of reassurance. The heater also helped to increase the oil viscosity and protect my engine from cold weather starts.

However, there was one issue I experienced. On the very first use, the heater stopped working after only two days. I had to remove it and get it replaced under warranty. However, one of my friends who used the same heater got no problems, so it could have been a bad batch.

Overall, I would recommend the Zerostart Block Heater to those living in colder climates, especially if you own a Chevrolet or GMC vehicle. The convenience and performance it brings during winter makes it worth the investment, once you overcome the occasional issue with quality.

Engine Heater Plug for 1994 GMC Sonoma — 2WD, 4 Cylinders, 2.2L FI OHV, 134 — Block Heater 11435

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When the temperatures drop, starting your car becomes a significant challenge — especially if you’ve opted for an engine heater. In my experience, the Kat’s Engine Heater Freeze Plug 11435 was a real game changer for those chilly mornings. The simple plug-and-play design made installation a breeze, allowing a quick and seamless integration into my vehicle’s engine system.

One feature that stood out to me was the heating element’s ability to keep my car’s fluids warm and flowing even when the outside conditions were frigid. What really impressed me was the noticeable difference in the engine’s overall performance when using the heater, specifically during startup. The heater not only shortened my startup time considerably but also gave me the peace of mind knowing that my engine was protected from the harsh cold.

However, I also encountered a few shortcomings with the Kat’s Engine Heater Freeze Plug 11435. While the installation process was straightforward, unfortunately, I experienced a malfunctioning unit after just a few weeks of use. The heater ultimately failed, resulting in an unnecessary hassle and cost of replacement that I hadn’t budgeted for. Nonetheless, I was able to find a trustworthy replacement from a reputable supplier, which solved my problem.

In conclusion, the Kat’s Engine Heater Freeze Plug 11435 offered a convenient solution to the challenges of starting my vehicle in freezing temperatures. Though the product had a few shortcomings, I appreciated the ease of installation and the effective performance it provided during those cold winter days. The key takeaway: consider your options and choose reliable brands to avoid potential setbacks when relying on this type of product.

Magnetic Heater for Engine Blocks and Oil Pans

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I recently gave Kat&s Magnetic Heater a try to keep my car’s engine from freezing in the cold winter months. It was fairly easy to set up, with the powerful magnetic base simply attaching to the engine block without any installation required. The heater uses a 120-volt receptacle, so plugging it in was a breeze.

The heat provided was noticeable and helpful in preventing the fluid from thickening, allowing my car to start more smoothly. It was also convenient to use on other metal surfaces around the house, such as frozen pipes or livestock feeders. However, I did notice that the plastic case had a tendency to melt under prolonged use, which was a bit of a concern.

Overall, I found the Kat&s Magnetic Heater to be a useful addition to my winter vehicle maintenance routine. It offered a simple solution to preventing fluid freezing and starting issues, without the need for any permanent installation. The magnet attachment made it easy to move from one location to another as needed. Just be mindful of the melting plastic case issue and ensure you’re using it in a safe and controlled manner.

Kats Engine Heater Cartridge for Efficient Block Heater Performance

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I recently installed the Kats Engine Heater Cartridge (11815) in my vehicle’s engine, a simple and effective way to avoid those frosty mornings. The cartridge is made of cast aluminum, making it durable and long-lasting, while also being interchangeable with the manufacturer’s original equipment. This is a cost-effective aftermarket solution that’s perfect for those wanting to save some cash.

One of the most notable features is its ease of installation. It doesn’t require the removal of the frost plug or draining the coolant. You only need to coat it with the included NSCG silicone grease (G-624), insert it, and clip it in place. The cartridge is suitable for various applications, including Toyota, Chrysler-Jeep, Hyundai, Kia, and General Motors.

However, I must also mention the small size of this heater cartridge. It may be slightly more challenging to install compared to its larger counterparts, as it requires a precise fit. Nevertheless, its dimensions are designed to ensure it fits snugly in the engine block core hole.

Overall, the Kats Engine Heater Cartridge (11815) has proven to be an excellent investment for my daily driving needs, keeping my engine warm on those chilly mornings.

Zerostart & Temro Block Heater for Efficient Circulation

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If harsh winters have left you stranded with a stubborn, uncooperative engine, Zerostart’s 8000 Series Tank/Circulation Engine Heater is the remedy you need. This sturdy device is built with rugged die-cast aluminum, ensuring it’s both corrosion-resistant and impact-resistant. The new detachable power cord simplifies installation, while the copper heating element provides superb heat transfer.

A temperature-sensing thermostat safeguards against overheat, and with its 1500-watt, 120-volt power, it offers an ideal heating solution for your engine. Despite its robustness, the 8000 Series Heater boasts a 5/8-inch hose connection, making it fitting for various engine sizes. Its popularity is evident through glowing reviews by satisfied customers whose engines now roar to life in even the chilliest conditions.

Engine Heater for Dodge Ram 2500 & 3500

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The Standard HPC1 Engine Heater is designed to keep your vehicle’s engine warm and ready for action, even in the harshest of winter conditions. This high-quality heater is perfect for a range of Dodge Ram models, from the 2500 to the 3500, making it a versatile and reliable choice for drivers in cold climates.

Featuring a quick and simple installation process, the HPC1 Engine Heater allows for a swift and efficient start-up in cold weather, ensuring your driving experience is as comfortable and hassle-free as possible. Extensive testing to original equipment (OE) specifications guarantees superior performance and long-lasting durability, while still meeting or exceeding OE standards.

As a trusted brand, the Standard HPC1 Engine Heater offers technicians the quality parts needed to perform their jobs efficiently and effectively, ensuring a perfect fit and optimal performance. With a focus on meeting the needs of both drivers and mechanics alike, this versatile heater is the perfect solution for staying cozy and safe on the road during the colder months.

Kats Freeze Plug Heater: Efficient Block Heater for Cold Weather Protection

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Introducing the Kats Engine Heater Freeze Plug 11419, a reliable and efficient way to pre-heat your engine block, especially during those freezing winter mornings. This heater operates by being directly submerged into your coolant and gradually heats the block, ensuring a quicker and smoother start to your vehicle’s engine. However, do note that the applications are specific to part numbers, and installation may require some mechanical ability.

Despite its functionality, the Kats Engine Heater Freeze Plug 11419 has received mixed reviews from its users. While it has been praised for its installation process and its effectiveness at pre-heating, some users have experienced problems with the product, which has led to higher overall costs and discontentment. It’s always recommended to carefully consider all pros and cons before making a purchase to ensure your satisfaction with the product.

In conclusion, the Kats Engine Heater Freeze Plug 11419 offers an efficient and reliable solution to pre-heat your engine block, but it’s essential to weigh its pros and cons against your specific needs and preferences. With the right preparation and usage, this heater can significantly improve your vehicle’s performance in colder temperatures.

Kat’s Engine Heater Freeze Plug 11814: Protection for Cold Weather Starting

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Using Kat’s Engine Heater Cartridge is a game-changer for my driving experience, especially during those chilly winter mornings. The heater effortlessly heats the engine’s oil or coolant, making it a breeze to start my vehicle in below-freezing temperatures. I couldn’t be happier with the Kat’s Engine Heater Freeze Plug 11814 — it truly lives up to its OE equipment and vehicle standards promises.

The ease of installation combined with its effectiveness in keeping my engine warm has made this heater a daily necessity for me.

Thermo Scientific 96-Well ELISA Block Heater

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Introducing the Thermo Scientific Block Heater, a versatile solution for your laboratory needs. This heater is designed to complement the use of Thermo Scientific Digital and Touch Screen Dry Baths/Block Heaters. Perfect for 96-well ELISA plates, this block heater simplifies your workflow and reduces potential errors.

While it may not be the most compact model on the market, its larger size offers additional capacity for your plate work. The consistent temperature provided by the block heater helps ensure optimal performance, making it a valuable asset for your lab.

However, it’s essential to note that this block heater is not compatible with all systems, as it is specifically designed for use with select Thermo Scientific Digital and Touch Screen Dry Baths/Block Heaters.

Overall, the Thermo Scientific Block Heater offers a solid and practical option for those who need reliable temperature control for their 96-well ELISA plates. While it might not be suitable for everyone, it’s worth considering if you’re working with compatible equipment.

Buyer’s Guide

When it comes to starting your vehicle during colder months, a block heater can be a lifesaver. This heating element, usually installed under the engine block, works to keep the engine fluid warm, preventing it from thickening and causing difficulties when starting the engine. Here’s what you should consider when shopping for a block heater.

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Important Features to Consider

When shopping for a block heater, there are several key features to keep in mind. These include the type of heater, its heating capacity, and the wattage. Some block heaters come with built-in timers or thermostats, which can help control the temperature and duration of the heating. Other features to look for include durability, size, and ease of installation.

Heating Capacity and Wattage

The heating capacity of a block heater refers to how much fluid it can heat in a given time. A higher heating capacity typically means faster heating times, but also more energy consumption. Wattage, on the other hand, refers to the power input of the heater. Higher wattage heaters tend to have larger heating capacities. Be sure to choose a heater with the appropriate wattage and heating capacity for your needs.

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Durability and Ease of Installation

A good block heater should be built to last, with sturdy components that can withstand repeated use. Look for heaters with warranty information and positive customer reviews. Additionally, consider the ease of installation. Some heaters come with detailed instructions and easy-to-use mounting hardware for an optimal installation experience.

Considerations for Different Vehicles

Not all block heaters are created equal. Different vehicles may require different types of block heaters, depending on the size and type of engine. Be sure to consult with a mechanic or automotive expert before purchasing a block heater for your specific vehicle. Additionally, consider the size of your engine compartment and the clearance requirements, as this can impact the type and size of heater you can use.

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FAQ

What is a block heater?

A block heater is a device designed to keep the engine oil, fuel lines, and other car parts warm during very cold weather. In extreme temperatures, it can take a long time for your car to start and to get the engine warm enough to function properly. A block heater speeds up this process by keeping the engine components at an optimal temperature.

Block heaters are usually plugged into an electrical outlet overnight, allowing them to use electrical current to warm up the engine components. This can help prevent damage caused by prolonged exposure to cold temperatures and ensure your car starts efficiently despite harsh weather conditions. Commonly used on cars in regions with severe winters, block heaters can save time, reduce wear and tear, and improve overall driving experience.

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How does a block heater work?

A block heater works by utilizing electrical resistance to convert electrical energy into heat energy. Most block heaters have resistive heating elements made from materials such as aluminum, copper, or brass, which are shaped into a block that can sit within the car’s engine compartment. These heating elements are connected to a power outlet and become warm as they draw electricity. The heat generated from these elements is circulated throughout the engine components, ensuring that they remain at an optimal temperature.

To operate the block heater, a thermal switch or a relay switch is used. When the temperature drops below a certain point, the switch completes the circuit, allowing electricity to flow to the heating elements. Once the temperature within the engine compartment rises above a preset level, the switch breaks the circuit, turning off the block heater and preventing any overheating or damage to the car components.

Is it safe to leave a block heater plugged in overnight?

While it is generally safe to leave a block heater plugged in overnight, it is essential to follow the manufacturer’s instructions regarding power consumption and proper installation. In most cases, the block heater will have a thermal switch to protect against overheating and a relay switch to cut off power after a specific amount of time or desired temperature. This ensures the heater will not draw too much current continuously and can prevent any safety issues or potential damage to the car’s components.

It is also important to note that leaving a block heater plugged in for extended periods can result in excessive energy usage and higher electricity bills. In that case, you may consider installing a timer or smart thermostat to manage the power consumption more efficiently. Overall, following the guidelines provided by the manufacturer and taking proper safety measures will help ensure that your block heater operates safely and effectively.

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What are the benefits of using a block heater?

A block heater offers several benefits for drivers living in areas with extremely cold weather. First, it allows your car to start more quickly during morning temperatures, making it easier to leave in the morning for work or other activities. By preventing engine components from getting too cold and becoming hardened, the block heater can also reduce the likelihood of engine damage and prolong the life of critical car parts. This can be especially important in areas where salt is used to de-ice roads during the winter.

Furthermore, a properly functioning block heater can also help improve fuel economy. A warm engine tends to run more efficiently, meaning the engine does not need to use extra fuel to warm up. This can lead to cost savings over the long run, especially for drivers who frequently use their cars in cold conditions.

How do I install a block heater on my car?

The process of installing a block heater can vary depending on the car model and block heater make and model. However, there are some general guidelines that can help you understand the basic installation process. First, make sure to choose the appropriate block heater size based on your engine capacity and cooling system requirements. This information can typically be found in your car’s manual or by consulting the block heater manufacturer.

Next, follow these general steps when installing a block heater: Connect the block heater to the engine compartment at an appropriate location. Usually, the coolant system’s thermostat housing is the best location to mount the heater, as it distributes heat evenly to critical engine components. Then, run the wiring to an appropriate power source, such as a 12-volt power outlet under the dashboard. Ensure proper insulation and protection to prevent damage to the wiring from extreme cold temperatures. Finally, use the designated switch or relay switch to control when the block heater turns on and off during cold-weather conditions. Always consult with a professional for best results.

How much does it cost to run a block heater overnight?

The cost of running a block heater overnight can vary depending on factors such as the heater’s power consumption, the electricity rate in your area, and the number of hours you use the heater each night. Generally, an electricity rate of $0.12 per kilowatt-hour (kWh) is considered average, although prices can range from $0.08 to $0.20 per kWh.

Assuming a 5-kW block heater (a typical size for many vehicles) that is used 6 hours per night, the average cost would be $3.60 per night. This amount can vary based on the region and specific car model and block heater make and model. However, it is essential to consider that this cost is offset by the benefits of using a block heater, such as improved engine performance, reduced likelihood of engine damage, and increased overall driving comfort in cold weather conditions.

As an Amazon Affiliate™ I receive compensation through qualified purchases at no cost to you

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