10 Best Portable Car Heater 2025 in the United States

The Mr. Heater 18,000 BTU Big Buddy Pro Series is a portable propane heater designed to warm spaces up to 450 square feet, making it quite powerful for use in cars, small garages, or outdoor areas. It uses a radiant heating method, which efficiently transfers heat and warms up quickly. The heater offers three heat settings—low, medium, and high—allowing you to control the temperature comfortably. One of its major advantages is safety: it has features like automatic shut-off if tipped over, if the pilot light goes out, or if low oxygen levels are detected, which is especially important for indoor or enclosed spaces. This makes it safer than many other propane heaters in its class.

The unit weighs about 11 pounds and has a pedestal design, making it reasonably portable though not pocket-sized. It runs on a propane tank (not included), so you'll need to keep fuel on hand. Some models do not have a built-in fan due to recent changes, so heat distribution relies on natural convection, which might feel less even in larger or drafty spaces. The heater operates quietly, which is a plus for use inside vehicles or small rooms. It may shut off at high altitudes above 7,000 feet, an important consideration for users in mountainous areas.

This heater represents a reliable and portable propane heating solution with strong safety features and good heating power. It is best suited for medium-sized spaces rather than very compact or extensive areas.

The Mr. Heater MH12B Hunting Buddy is a portable propane-powered radiant heater designed for outdoor use, making it a practical choice for warming up small spaces like tents, cabins, or vehicles parked outdoors. With a heating output between 6,000 and 12,000 BTU, it can effectively warm areas up to 300 square feet, which suits moderate-sized spaces well. Its radiant heating method provides direct warmth without relying on vents or fans, which helps keep noise levels low—a plus for quiet environments.

Safety is a strong point with this model: it includes automatic shut-off features if tipped over, if the pilot light goes out, or if it detects low oxygen levels, helping to prevent accidents and carbon monoxide buildup. This makes it safer for use in partially enclosed areas, though it is approved only for outdoor use. Portability is enhanced by a fold-down handle and a compact size (just over 10 by 15 by 16 inches), and it weighs about 11 pounds, so it’s manageable to carry. However, it requires a propane tank (not included), which means you need to have fuel on hand and some basic familiarity with propane connections. Also, the heater may shut off at high altitudes above 7,000 feet, so it may not be suitable for all mountain or high-elevation environments.

A limitation is that it lacks variable heat settings, offering only one power level, which might restrict fine control over temperature. Additionally, it is not designed for indoor use, so it’s not ideal for heating inside a car while driving. This heater suits outdoor portable heating needs well, especially in camping or hunting situations where propane fuel is accessible and quiet, direct heat is preferred. Its safety features and portability make it user-friendly, though its reliance on propane and altitude sensitivity could restrict some users.

The Lasko Ellipse Ceramic Tabletop Heater is a well-built electric heater ideal for indoor spaces like bedrooms, offices, or dens, offering 1500W power with ceramic heating technology. It distributes heat widely thanks to its 120° oscillation and curved design, efficiently warming up to 200 sq ft. Safety features are strong, including a tip-over switch, child lock, cool-touch housing, and overheating protection, making it a safe choice for homes with kids or pets.

The heater is easy to control with a large digital display and remote, allowing adjustments of three heat levels, two fan speeds, and a 12-hour auto-off timer. It also has an energy-saving Auto ECO mode that adjusts heat output to conserve power. Noise is kept low at under 40dB, so it won't disturb quiet environments. Portability-wise, it’s lightweight at just over 3 pounds and compact enough for tabletop use.

It runs on standard 120V AC power and requires a plug, which makes it unsuitable for use in cars where 12V power is typical. Also, its size and shape are not optimized for vehicle spaces, and it lacks specific features for automotive use such as DC power compatibility or mounting options. This heater is an excellent, safe, quiet, and convenient option for indoor rooms but is not designed for portable car heating needs.