DeLonghi EW7077CM

If you have a crawl space with a taller clearance (I'd say at least 33 inches),the DeLonghi EW7707CM is a smart plug-in choice that offers silent radiant heating and solid value.

At about 27 inches tall, it needs adequate vertical clearance and a little space around it for good airflow, so it's best for crawl spaces that aren't too tight.

Unlike the hardwired ceiling-mounted units, this one is a portable oil-filled radiator, meaning there’s no fan, virtually silent operation once the oil heats up, and no risk of blowing dust or insulation particles around.

Instead, the DeLonghi 1,500-watt heater that provides a steady, gentle warmth, making it a great temporary or supplemental solution for crawl spaces, particularly in southern regions where cold snaps are rare but still capable of freezing pipes. 

At around $130, the DeLonghi is an excellent value for what it delivers.

I lent this model to a neighbor during a surprise cold snap, and he joked that it saved his plumbing and his sanity.

Compared to a forced-air unit like the Dura Heat EUH1465, the DeLonghi gives off a more consistent, gentle heat instead of a strong air blast, which makes it much better for crawl spaces where you don’t want dust or debris stirred up.

Related article: Recommended oil-filled radiators for silent, steady heat

Comfort Zone CZ260ERBK

For crawl spaces that are in particularly cold places where heat is required for a longer season, I find that hardwired heaters are the ideal choice. 

The Comfort Zone CZ260ERBK is an excellent solution for crawl spaces of up to 1500 square feet where fast heat is needed. 

This model is similar to my top choice product, the Dr. Infrared DR-975, in that both models are hardwired ceiling mount options meant to hold up to conditions. 

Where the Comfort Zone model shines is its extreme heat output of 34,122 BTUs, which is the highest of any model on my list.

There are five adjustable louvers on this crawl space heater that allow you to direct the airflow to where you need it most. I love this feature and found it very easy to ensure my entire space was getting equal amounts of heat. 

As with the Dr. Infrared DR-975, I recommend having a professional installation done for this hardwired space heater. 

This is primarily because you will need a 240-volt circuit, but also because the Comfort Zone is a heavy model at 42.2 lbs. You will definitely want one person to hold the unit in place while a second person performs the mounting. 

The Comfort Zone has a temperature range of 68 degrees to 95 degrees Fahrenheit. 

For those who like the sound of this Comfort Zone model, but don't quite need the 1500 square foot heating coverage, this same model is available in both 5000 watts and 7500 watts as well.

Comfort Zone is also a brand that I often recommend for garage heating.

Comfort Zone CZ220

For smaller crawl spaces that still need a steady, reliable heat source, the Comfort Zone CZ220 is a compact yet capable option.

This model is essentially the smaller sibling of the Comfort Zone CZ260ERBK. 

While some listings claim it can heat up to 1,000 square feet, I find it best suited for crawl spaces up to around 500 square feet, especially when insulation is limited.

It’s a hardwired, ceiling-mount heater, so this is a permanent heating solution rather than a plug-and-play setup.

Despite its lower output of 17065 BTUs, it still produces impressive warmth for its size and costs just under $100, making it one of the best values in the category.

Installation is straightforward for anyone experienced with wiring 240-volt circuits, but if you’re not confident working with electrical connections, I recommend hiring an electrician for safety. 

For DIYers, though, it's much more manageable to install than the Comfort Zone CZ260ERBK, because it's only about half the weight of it's larger counterpart.

The adjustable louvers allow you to direct airflow where you need it most, and once installed, the CZ220 delivers steady, even heat that easily keeps damp chill at bay.

I installed one in a friend’s crawl space last winter, and he said it was the first time his floors didn’t feel like ice underfoot.

If you need dependable, low-cost heating for a smaller area, the Comfort Zone CZ220 is a great way to keep your crawl space (and your toes) much warmer through the winter months.

Dura Heat EUH1465

If you want to protect your walls and pipes without spending a fortune, I recommend the Dura Heat.

This heater uses a forced air method and a powerful fan to circulate warm air quickly around your crawl space.

It doesn’t have the power or coverage of the Dr. Infrared DR-975, but it's far more portable.

You can set it up exactly where you need it, and the pivoting base lets you direct the heat to the coldest spots in the room.

It can't handle a large basement or crawl space in winter, but I found it performed well in spaces under 150 square feet.

The Dura Heat doesn't have all the bells and whistles of premium models, and there's no programmable timer or smart technology.

However, it does have an adjustable thermostat and safety features that make it easy to use safely.

The only downside is that it lacks the quality of some other models.

It doesn't have the sturdy frame of the Dr. Infrared DR-975, though.

However, you get what you pay for, and while it may cost more in the long run, it offers a cost-effective way to limit heat loss from your home in the short term.

It isn't a permanent or long-term solution. Still, if you need heating in specific places or at specific times of year, I recommend the Dura Heat.

Can I put a space heater in my crawl space?

Yes, a space heater can work well in crawl spaces or living spaces.

Where should I install a crawl space heater?

For optimal performance, you should install a crawl space heater in the center of the space or along the floor joists. This will keep heat inside, prevent frozen pipes, and limit mold growth.

How do I stop pipes from freezing in crawl spaces?

You can prevent frozen pipes in your crawl space with proper insulation and heater installation. You can also use heat tape or heat cables so they don’t freeze in the colder months.

What are some risks when it comes to crawl space heating?

If there is insufficient ventilation, crawl space heating can add to humidity levels, increasing mold and mildew growth in your home. The high humidity levels can also damage the foundations and walls of your house.