Maximizing heat distribution from your wood stove relies heavily on efficient thermoelectric fan technology. Selecting the best heat fan for wood stove applications ensures optimal airflow and warmth circulation throughout your living space. These specialized fans, often referred to as stove top fans or heat-powered fans, leverage temperature differentials to generate power, eliminating the need for external electricity.
Understanding the nuances of their blade design, material composition, and operational temperature range is crucial for achieving peak performance. Exploring the top-rated options for the best heat fan for wood stove setups can significantly impact your home’s comfort and energy efficiency.
Continue reading to uncover how these innovative devices can transform your wood-burning experience.
Find Your Perfect Heat Fan Match
1. JossaColar Wood Stove Fan Heat Powered Fireplace Fan Non Electric,
Experience enhanced warmth and efficient heat distribution with the JossaColar Wood Stove Fan. This innovative, heat-powered fan requires no batteries or external power, silently circulating warm air from your wood-burning stove or fireplace to create a more comfortable living space. It’s the perfect accessory for any log burner owner seeking optimal heat utilization.
The JossaColar fan operates on thermoelectric principles, converting heat from your stove into energy to spin its durable aluminum blades. Designed for optimal airflow, it effectively diffuses warm air, preventing temperature stratification and ensuring consistent comfort throughout your room.
This eco-friendly solution maximizes the heat output of your existing appliance.
Key Features and Benefits
- Heat Powered Operation: Utilizes the heat from your wood stove as its sole power source, eliminating the need for batteries or electricity for this eco-friendly wood stove accessory.
- Enhanced Heat Distribution: The upgraded aluminum curved fan blade promotes effective hot air diffusion, spreading warmth evenly for a more comfortable entire room, ideal for log burners and fireplaces.
- Ultra-Quiet Performance: Operates at less than 25dB, ensuring a peaceful environment without disruptive noise, making it suitable for bedrooms and work areas.
- Complete Package with Thermometer: Includes a free magnetic thermometer to help you monitor stove top temperature for optimal fan performance and safety.
- Durable Aluminum Construction: Features a robust aluminum fan blade designed for longevity and efficient heat circulation.
Considerations
- Limited to 1 speed, offering a single, consistent airflow setting for simplicity.
For those seeking to maximize their wood stove’s heating potential with an environmentally conscious and silent solution, the JossaColar Wood Stove Fan is an excellent choice. It’s an essential addition for anyone with a wood burning stove or fireplace looking to improve air circulation and home comfort with a reliable hearth accessory.
2. Wood Stove Fan Heat Powered | Fireplace Fan Heat Activated
Elevate your wood stove experience with the Miaton Heat Powered Stove Fan, a revolutionary accessory designed to maximize warmth and efficiency. This innovative thermoelectric fan operates silently, harnessing the stove’s heat to circulate air throughout your room, proving itself as an essential addition for any wood-burning enthusiast, even during power outages.
Crafted from durable, anodized aluminum, this fireplace fan is built to withstand high temperatures and resist corrosion, ensuring longevity. Its clever design not only enhances wood burning and fuel efficiency by distributing heat more effectively but also features a built-in thermometer for precise temperature monitoring, making it a smart choice for your wood stove setup.
Pros
- Self-Powered Efficiency: Harnesses heat from your wood stove to generate electricity, eliminating the need for batteries or external power, ensuring operation even during power outages and improving overall fuel efficiency.
- Durable and Safe Construction: Made from high-quality anodized aluminum resistant to high temperatures, abrasion, and corrosion, with an automatic overload protection device that lifts the fan base above 350°C to prevent damage.
- Whisper-Quiet Operation: Delivers powerful air circulation with a noise level consistently below 25 decibels, ensuring a peaceful and undisturbed environment in your home or workspace.
- Enhanced Heat Distribution: Effectively circulates warm air from your wood burner or fireplace, creating a more comfortable and evenly heated room faster and with less fuel. It also includes a handy built-in thermometer to monitor your stove’s temperature.
Cons
- Temperature Dependency: Requires a minimum surface temperature of 50°C on the stove’s top to operate effectively, meaning it may not function optimally on all types of fireplaces or stoves, especially those with thermal protection layers that reduce surface heat.
The Miaton Heat Powered Stove Fan is a fantastic solution for anyone looking to optimize their wood stove’s heating performance. Its automatic, heat-driven operation and quiet efficiency make it a highly recommended stove accessory for any homeowner seeking improved comfort and reduced fuel consumption.
3. VODA Wood Stove Fan Heat Powered Fireplace Fans 8 Blades
Transform your wood-burning stove into an efficient heat distribution system with the VODA Wood Stove Fan. Designed for optimal warmth, this heat-powered fan circulates cozy air throughout your living space, enhancing comfort and reducing reliance on conventional heating methods. Experience a warmer home faster and more economically.
This advanced, non-electric thermal fan boasts an upgraded 8-blade design, maximizing air volume and directing warm air horizontally for superior room heating. Unlike basic stove fans, it includes a magnetic thermometer to monitor optimal operating temperatures and a fragrance dispenser, allowing you to add essential oils for a wonderfully aromatic and comfortable atmosphere. It’s the perfect accessory for any wood burning stove setup.
It’s the perfect accessory for any wood burning stove setup.
Pros
- Enhanced Heat Distribution: The 8-blade system effectively moves a larger volume of warm air horizontally, ensuring your room heats up more rapidly and evenly compared to passive heat radiation from the stove.
- Energy Savings & Eco-Friendly Operation: Functions entirely on heat generated from your wood stove, requiring no batteries or electricity, thus significantly reducing energy bills and your carbon footprint.
- All-in-One Comfort Solution: Comes bundled with a magnetic stove thermometer for safe temperature monitoring and a fragrance dispenser to infuse your space with pleasant aromas, elevating your comfort experience.
- Overheat Protection: Features an integrated metallic strip that automatically lifts the fan if temperatures exceed safe operating limits, protecting the internal components and ensuring longevity.
- Wide Compatibility & Ease of Use: Operates efficiently on various wood-burning stoves, requiring no complex installation – simply place it on top of your stove and let the heat do the work.
Cons
- Temperature Limitations: While operating between 176°F-653°F, continuous operation near the upper limit may risk damage; most efficient around 482°F, meaning performance is directly tied to stove heat output.
The VODA Wood Stove Fan is an excellent investment for anyone looking to maximize the warmth from their wood burning stove while enjoying added aromatic benefits. It represents a smart, energy-efficient way to complement your home heating, creating a genuinely cozy environment for relaxation.
4. Ecofan UltrAir Heat Powered Stove Fan – Powerful Classic Design,
Enhance your home’s warmth and comfort with the Ecofan UltrAir Heat Powered Stove Fan. This innovative fan harnesses the heat from your wood-burning stove to silently circulate warm air, creating a cozier environment without any additional energy consumption.
Designed to seamlessly integrate with your wood stove, the UltrAir fan is a true powerhouse of efficiency. It’s engineered for optimal performance, activating quickly at standard stove temperatures to begin dispersing heat throughout your room.
Pros
- Self-Powered Operation: Generates its own electricity from stove heat, eliminating the need for batteries or external power cords, making it a truly cord-free and convenient accessory for your wood stove.
- Rapid Heat Circulation: Activates promptly at optimal wood stove temperatures (around 200°F / 95°C), quickly spreading comfortable warmth throughout your space and reducing cold spots.
- Fuel Savings & Efficiency: Increases your wood stove’s efficiency by an estimated 15-20% by distributing heat more effectively into the room, which can translate to less wood burned.
- Durable & Safe Design: Features a robust, classic aesthetic with two blades meticulously engineered for improved air dispersion and reduced motor drag, along with integrated FingerSafe blades for enhanced safety.
- Reliable Performance & Support: Built to last by proud Canadians since 1955, with available replacement motors and a strong warranty, offering peace of mind for your investment in better wood stove heat circulation.
- Eco-Conscious Manufacturing: Constructed with recyclable materials and shipped in 100% recycled packaging, aligning with environmentally responsible practices for a sustainable home.
Cons
- Fan Speed Dependency: While efficient, the fan speed is directly tied to the stove’s surface temperature; it will operate slower on lower heat settings and may not spin at all on very cool stoves.
The Ecofan UltrAir represents a smart, eco-friendly way to optimize your wood stove’s heating capabilities. If you’re looking to get the most out of your wood-burning appliance and ensure consistent warmth throughout your home, this heat-powered fan is an excellent choice for enhanced air circulation and energy efficiency.
5. 4-Blades Heat Powered Wood Stove Fan + Magnetic Thermometer, 122°F
Elevate your wood stove’s warmth with the GALAFIRE 4-Blade Heat Powered Fan, a must-have fireplace accessory designed to amplify heat circulation. This innovative, self-powered fan quietly disperses warmth throughout your living space, making your home cozier and reducing reliance on additional heating methods. It’s the perfect blend of efficiency and elegant design for any wood-burning hearth.
Experience enhanced heat distribution and a warmer room faster, thanks to GALAFIRE’s efficient N429 stove fan. Crafted from premium anodized aluminum, its compact design (just
Operating without electricity or batteries, it self-starts at a low 122°F (50°C), offering a sustainable and cost-effective way to enjoy your wood fire’s full potential.
Pros
- Effortless Heat Amplification: This heat-activated fan effectively pushes warm air away from the stove and into your room, improving overall heat distribution and making your living space feel warmer more quickly. It maximizes the efficiency of your wood-burning appliance.
- No Operating Costs & Eco-Friendly: Fueled solely by the heat from your stove, this fan requires no electricity or batteries, offering a completely cost-free and environmentally conscious way to enhance your home comfort and is an ideal wood heater accessory for energy savings.
- Compact & Versatile Design: With a height of only 7.48 inches, its small footprint makes it suitable for a wide range of wood stoves, pellet stoves, and gas stoves, even in tighter spaces. This makes it a particularly good stove fan for smaller hearths or environments.
- Integrated Temperature Monitoring: The included magnetic thermometer provides real-time monitoring of your stove’s surface temperature, helping you maintain optimal operating conditions and prevent overheating, thus ensuring safer operation and longevity of your wood stove.
- Quiet and Reliable Performance: Enjoy a peaceful atmosphere as the fan operates at a low noise level (30 decibels), silently circulating warm air. It features a robust 4-blade design for optimal airflow (220 CFM) and comes with a reassuring 2-year warranty for peace of mind.
Cons
- Optimal Temperature Range Required: The fan may not be effective or start reliably on stoves that consistently operate below a surface temperature of 212°F (100°C), limiting its usability on very low-heat wood burning stoves or alternative heating appliances with limited heat output.
The GALAFIRE 4-Blade Heat Powered Wood Stove Fan is an intelligent addition to any wood-burning setup, offering an efficient and silent method for wider heat dissemination. Coupled with the magnetic thermometer for safety, it’s an excellent choice for homeowners seeking to optimize their wood stove’s heating performance and enhance their home’s comfort without additional energy expenses.
6. Heat Powered Stove Fan for Wood & Pellet Burners: Compatible
Transform your living space with efficient and silent warmth. This heat-powered stove fan is engineered to maximize your wood or pellet stove’s output, effortlessly circulating cozy air throughout medium to large rooms.
Designed to enhance heat distribution, this self-powered fan integrates seamlessly with most flat-top wood, pellet, and log burners, including Freedom Stoves. Its robust 4-blade, 14-inch design generates an impressive 348 CFM airflow, circulating warm air without any cords or batteries.
This thermo-electric marvel is an ideal accessory for any stove enthusiast seeking optimal thermal management.
Pros
- Effortless Heat Distribution: Expands the reach of your stove’s warmth, creating a more evenly heated and comfortable living room environment.
- Self-Sufficient Operation: Runs entirely on the heat generated by your stove, eliminating the need for electricity, batteries, or external power sources.
- Quiet & Reliable Performance: Operates at a mere 45 decibels, ensuring a peaceful ambiance, while the durable aluminum build guarantees longevity even under high temperatures.
- Broad Compatibility: Versatile design fits atop most flat-top wood, pellet, and log burning stoves, making it a widely applicable stove accessory.
- Powerful Airflow: The four-blade system efficiently moves a significant volume of warm air (348 CFM) to combat cold spots effectively.
Cons
- Surface Temperature Dependent: Performance is directly tied to the stove’s surface temperature; requires a minimum heat level to activate and may slow down as the stove cools.
Elevate your home heating experience with this innovative, heat-powered stove fan. By silently and efficiently distributing warmth, it ensures you get the most out of your wood or pellet burner. For those seeking improved comfort and thermal efficiency from their stove, this non-electric fan is an indispensable addition.
For those seeking improved comfort and thermal efficiency from their stove, this non-electric fan is an indispensable addition.
7. Ecofan AirMax Heat Powered Stove Fan – Powerful Classic Design,
Revolutionize your home’s warmth with the Ecofan AirMax, the best heat fan for wood stoves. This innovative thermoelectric fan harnesses stove heat to silently circulate comforting warmth, creating a cozier environment without any extra power.
Experience efficient heating and a significant reduction in fuel consumption, all with a timeless design.
The Ecofan AirMax is engineered for optimal performance, activating at typical wood stove temperatures to quickly begin distributing heat. Its advanced two-blade system is designed for maximum air dispersion with minimal motor drag, ensuring efficient circulation throughout your living space.
Pros
- Heat-Powered Operation: Generates its own electricity directly from stove heat, meaning no batteries, cords, or external power sources are ever needed, making it a truly independent heating accessory.
- Enhanced Home Comfort: Efficiently circulates warm air away from the stove, preventing heat from building up near the ceiling and ensuring a more even temperature distribution throughout your cottage, family room, or living room.
- Fuel and Cost Savings: By distributing the existing heat more effectively, this wood stove fan helps you burn less fuel, leading to significant cost savings and a more eco-friendly heating solution.
- Durable and Safe Design: Features a robust thermoelectric motor and “FingerSafe” blades for enhanced safety, alongside a classic aesthetic that complements any wood-burning stove and home decor.
- Reliable Canadian Engineering: Proudly designed and manufactured in Canada by Caframo, a company with a long-standing reputation for quality and reliability since 1955, ensuring a product built to last.
Cons
- Requires Sufficient Stovetop Heat: Performance is contingent on the stovetop reaching and maintaining an adequate operating temperature, meaning it may not be effective with all stove types or during initial startup phases before significant heat is generated.
The Ecofan AirMax is the ideal choice for anyone seeking to maximize their wood stove’s heating capabilities and improve home comfort naturally. Its ability to distribute warmth across larger rooms efficiently makes it a must-have accessory for wood stove owners looking to save fuel and create a perfectly heated sanctuary.
8. AC Infinity AXIAL S1238D, Dual 120mm Muffin Fan with Speed
Enhance your home’s comfort and efficiency with the AC Infinity AXIAL S1238D dual fan system. Designed for superior air circulation, these powerful yet quiet fans are perfect for distributing heat from fireplaces, wood stoves, or simply improving room-to-room airflow. Optimize your environment with customizable speed control for the ideal balance of performance and tranquility.
Optimize your environment with customizable speed control for the ideal balance of performance and tranquility.
This kit features two 120mm muffin fans, each capable of delivering 40-110 CFM of cooling or heating airflow. Equipped with a fan speed controller, you can precisely manage the output to suit various applications, from boosting warmth from a wood burning stove to general ventilation. The UL-certified fans boast significant durability with dual-ball bearings rated for 67,000 hours, and can be mounted in any orientation for maximum installation flexibility.
The UL-certified fans boast significant durability with dual-ball bearings rated for 67,000 hours, and can be mounted in any orientation for maximum installation flexibility.
Pros
- Versatile Airflow Control: The integrated speed controller allows for fine-tuning airflow from 40 CFM to 110 CFM per fan, adapting to your specific needs for wood stove heat distribution, fireplace circulation, or general room ventilation.
- Exceptional Durability & Longevity: Featuring UL-certified fans with dual-ball bearings, this system is built to last with an impressive 67,000-hour lifespan, ensuring reliable performance for years to come as a dependable forced air solution.
- Complete Mounting Solution: The included kit provides heavy-duty aluminum fans, protective wire guards, mounting screws, and versatile swivel brackets, simplifying installation for various setups, including direct mounting on stove pipes or within ventilation enclosures for effective heat fan deployment.
Cons
- At maximum speed (47 dBA), the noise level might be noticeable in very quiet environments, though the speed controller allows for quieter operation at lower CFM settings.
For those seeking an effective way to improve air circulation in spaces heated by wood stoves, fireplaces, or requiring focused ventilation, the AC Infinity AXIAL S1238D offers a robust and customizable solution. Its blend of powerful airflow, durable construction, and user-friendly controls makes it a prime choice for enhancing home comfort and heat management.
Consider this dual fan setup when looking for reliable stove fans or effective fireplace circulation systems.
9. Wood Stove Fan Heat Powered, 6-Blade Thermoelectric Non-Electric Silent Operation
Maximize your wood stove’s warmth effortlessly with this innovative heat-powered fan. Designed for silent operation and efficient air circulation, it’s the perfect eco-friendly accessory to distribute heat evenly throughout your living space, transforming chilly rooms into cozy havens without consuming any electricity.
This 6-blade thermoelectric wood stove fan operates on the principle of converting heat directly into kinetic energy. Its durable aluminum construction ensures longevity and resistance to high temperatures.
Pros
- Achieve superior heat distribution from your wood or pellet stove, effectively eliminating cold spots and optimizing your heating system’s performance.
- Enjoy whisper-quiet operation at just 25 dB, ensuring a peaceful environment for relaxation or sleep, unlike louder, traditional electric fans.
- Experience the convenience of non-electric, self-powered operation; simply place it on a hot stove, and it starts working, ideal for off-grid living or power outages.
- The robust 6-blade aluminum design maximizes airflow and is built to withstand the heat from your stove for years of reliable use.
- Effortless installation and secure placement are guaranteed thanks to the specially designed bracket, particularly useful for propane heater fan applications.
Cons
- Effectiveness is dependent on the surface temperature of the stove; it may not spin or circulate air optimally on stoves that don’t reach sufficient temperatures.
This heat-powered stove top fan offers a sustainable and silent method to enhance heat circulation for various heating appliances. Its ingenious thermoelectric design makes it a fantastic addition for anyone looking to improve the efficiency of their wood burning stove, fireplace, or portable heater, ensuring consistent warmth without extra power usage.
10. VODA Wood stove fan Heat Powered Fireplace Fans 6 Blades,
Enhance your home’s warmth and efficiency with the VODA Wood stove fan, a heat-powered marvel designed to circulate cozy air and reduce heating costs. This innovative thermoelectric fan requires no batteries or electricity, making it an eco-friendly and cost-effective solution for any wood-burning stove or heater.
Featuring an upgraded 6-blade design, the VODA stove fan effectively disperses warm air horizontally, ensuring your living room, bedroom, or kitchen heats up faster and more evenly. Its compact, freestanding design with included bracket for heater mounting makes it versatile.
The operational temperature range of 176°F-653°F ensures it activates efficiently around 140°F, working optimally at warmer temperatures. Each unit includes a magnetic thermometer for convenient temperature monitoring.
Pros
- Efficient Heat Distribution: The 6-blade system diverts warm air horizontally, leading to quicker and more consistent room heating compared to standard stove heat dispersion.
- Energy Saving: Operates solely on heat generated by your stove, eliminating the need for external power sources and reducing energy bills.
- Built-in Overheat Protection: An integrated metallic strip automatically lifts the fan at dangerously high temperatures, safeguarding both the fan components and your stove.
- Complete Temperature Management: Comes with a gifted magnetic thermometer to easily monitor your stove’s surface temperature and ensure optimal fan operation within its recommended range.
- Quiet Operation: Produces a low noise level of just 25 decibels, ensuring a peaceful and warm environment without disruptive sounds.
Cons
- Temperature Sensitivity: The fan’s efficiency is dependent on stovetop temperature, and continuous operation above 653°F can potentially damage the unit; requires monitoring.
For those seeking to maximize the warmth from their wood burner and improve overall home comfort, the VODA heat-powered fan is an excellent choice. Its self-sustaining operation and effective air circulation make it a valuable addition to your heating setup, providing a cozier ambiance while being kind to your wallet and the environment.
How to Choose the Best Heat Fan for Wood Stove
Fan blade design and material
The effectiveness and longevity of your wood stove circulation device hinge significantly on its fan blade design and the materials used.
Thoughtful blade aerodynamics are paramount for efficient air movement, directly translating to better heat distribution throughout your living space. A well-designed blade shape can amplify the volume of air moved with each rotation, optimizing the fan’s ability to draw heat away from the stove and push it into the room.
Metal blades, often aluminum or steel, generally offer superior resistance to warping and cracking from prolonged high temperatures compared to plastic alternatives, ensuring a longer lifespan.
Furthermore, the number of blades plays a role in efficiency. While more blades can sometimes lead to quieter operation and smoother airflow, a balance is needed to avoid increased drag and motor strain.
This optimized design helps your circulation fan work optimally alongside your heating appliance, promoting a more comfortable and evenly heated home.
Motor power and heat activation
The performance and efficiency of your stove-top convection device hinge significantly on its motor’s power and its ability to react to heat.
Motor wattage dictates how effectively the fan circulates warm air, directly influencing how quickly and evenly heat disperses into your living space. A higher wattage generally means stronger airflow, which is crucial for maximizing the heat output from your wood stove. However, it’s also vital to ensure the motor is designed for sustained operation at the temperatures generated by a stove.
Look for fans with a clear minimum operating temperature, often around 122°F (50°C), to guarantee it activates reliably and doesn’t risk overheating. Factors like motor longevity are tied to its design and cooling capabilities; robustly built motors operating within their intended thermal range will last longer and produce less disruptive noise.
When evaluating these fans, pay attention to detailed specifications regarding the motor’s power rating and the temperature threshold at which it begins to spin. A well-chosen motor ensures consistent operation throughout the burning cycle, enhancing both comfort and the overall utility of your heating appliance, while also contributing to a quieter home environment.
Base and stability features
A robust foundation is paramount for ensuring safe and efficient operation of any device placed on a hot surface.
The base is the primary contact point with your wood stove’s heat, directly influencing the fan’s longevity and performance. Look for materials specifically engineered to withstand high temperatures without deforming or degrading.
Integrating antivibration pads is a key consideration, as these absorb subtle movements and noise, preventing the fan from skittering across the stove’s surface and creating a more pleasant, quieter user experience. The overall heft of the unit also contributes significantly to stability; a heavier base is less prone to tipping, offering a critical safety margin, especially in busy households.
When evaluating these physical attributes, consider the material composition of the base, its thermal resistance rating, and the presence and type of vibration-dampening elements. A well-engineered base, often featuring a wider footprint and sufficient mass, will remain securely positioned, channeling optimal airflow without becoming a hazard.
Overall size and placement
The physical dimensions and intended location of a wood stove circulation accessory are paramount to its effective operation and integration within your heating system.
Failing to account for size can lead to a fan that simply doesn’t fit or perform optimally. You must ensure compatibility with your stove’s top surface area; a fan that is too large might overhang the edges, obstructing heat distribution, while an undersized fan may lack the necessary stability or surface contact for efficient heat absorption.
Consider the recommended clearance from the stovepipe as well, as some models require a specific distance to prevent overheating their own components or to capture upward radiant heat. Smaller, compact fans are ideal for more limited stove surfaces and can be easily repositioned, whereas larger fans may offer greater air movement but demand more dedicated space.
Quick Best Heat Fan For Wood Stove Buying Checklist
- Stove Surface Temperature: Ensure the fan is rated for the typical temperatures of your wood stove.
- Blade Material: Opt for durable, heat-resistant materials like anodized aluminum.
- Motor Type: Look for silent or ultra-quiet motors to avoid distractions.
- Base Design: A stable, heat-resistant base prevents wobbling and overheating.
- Airflow Direction: Check how effectively the fan disperses heat into the room.
- No External Power Source: Verify that the fan operates solely on heat generated by the stove.
Frequently Asked Questions
How Does A Wood Stove Heat Fan Work?
Wood stove heat fans use a thermoelectric generator (TEG) that converts heat from the stovepipe into electricity, powering a small motor to spin the blades.
What Is The Optimal Placement For A Wood Stove Heat Fan?
Place the fan on top of your wood stove, towards the side of the stovepipe where the heat is most concentrated for best performance.
How Hot Does A Wood Stove Need To Be For The Fan To Work?
Most fans require a surface temperature between 120°F and 200°F (50°C to 93°C) to start and operate effectively.
Will A Wood Stove Heat Fan Increase Room Temperature Significantly?
Yes, by efficiently circulating warm air away from the stove, it can help distribute heat more evenly throughout the room, making it feel warmer.
Are Wood Stove Heat Fans Noisy?
Reputable heat fans are designed to be very quiet, often described as a gentle hum or practically silent, so they don’t disrupt the ambiance.
Final Words
Investing in the best heat fan for your wood stove is a smart way to optimize your heating. By efficiently circulating warm air, these fans reduce wasted heat and improve comfort.