Heat Wavy Lines black outline icon
Three rising wavy lines representing heat or steam
About the Heat Wavy Lines black outline icon
Three tapered S-curves rise side by side at slightly different heights, the universal shorthand for radiating heat, steam or warm vapor. Without any container drawn, it reads purely as temperature, warmth and a hot surface. Use it on thermostat and smart home controls, weather app condition lists, oven and cooktop indicator labels, hot food and beverage menus, and sauna or spa signage.
Each stroke thins at both ends and thickens through the middle bends, which gives the lines a soft, drifting feel rather than a rigid zigzag. The staggered heights stop the group from looking mechanical. It pairs with thermometer, fire and snowflake icons for a temperature set, and works well overlaid on a cup or plate icon.
This is the black outline version of the heat wavy lines icon: even, monoline strokes that stay crisp at small sizes and suit clean, minimal interfaces, wireframes and light backgrounds.
It downloads free as an SVG vector or transparent PNG in seven sizes, and the free online editor lets you recolor it, apply gold, silver, neon and gradient styles, add animation, or convert it to EPS, PDF and DXF.
Free for personal and commercial use with attribution.
