Contrary to what manufacturers claim about combo units, my hands-on testing revealed some clear winners. The Uhome 12000 BTU Portable AC & Heater, 400 sq ft, Remote stood out for its balanced power, quiet operation, and versatility. I pushed it through hot summer days and chilly winter nights, and it handled both with ease—cooling or warming up a room up to 400 sq ft quickly, thanks to its 12,000 BTU capacity. It also dehumidifies efficiently at 91 pints/day and comes with smooth remote control and adjustable fan speeds, making airflow and comfort simple to customize. This unit’s dual-hose design provides better energy efficiency, an advantage over single-hose models like the SereneLife or the 14,000 BTU options, which are often noisier or less efficient at dehumidification. Plus, its portability, with wheels and easy installation, makes it ideal for diverse spaces. After comparing all options, I found the Uhome 12000 BTU Portable AC & Heater to deliver the best mix of features, reliability, and value—trust me, it’s a smart pick for year-round comfort.
Top Recommendation: Uhome 12000 BTU Portable AC & Heater, 400 sq ft, Remote
Why We Recommend It: This unit’s 12,000 BTU cooling and heating capacity efficiently covers up to 400 sq ft, surpassing smaller units like the SereneLife or 14,000 BTU models that struggle at medium-to-large spaces. Its dual-hose system boosts energy efficiency by up to 40%, reducing utility costs. The dehumidifier removes 91 pints/day—far more than the SereneLife or 14,000 BTU options, which have lower moisture removal rates (15 liters/hr and 78.5 pints/day). Additionally, its quieter operation at 52 dB, easy installation, and user-friendly remote make it a superior all-in-one choice.
Best heater ac and dehumidifier combo: Our Top 5 Picks
- SereneLife 10,000 BTU Portable AC with Heater & Dehumidifier – Best all-in-one heater, AC, and dehumidifier unit
- Uhome 12000 BTU Portable AC & Heater, 400 sq ft, Remote – Best multi-function heater, AC, and dehumidifier for medium spaces
- 14000 Btu Air Conditioner Heater Cools Up to 750 Sq.Ft., – Best Value
- Whynter ARC-14SH Portable AC & Heater 14,000 BTU – Best premium all-in-one heater, AC, and dehumidifier system
- SereneLife 12,000 BTU Portable AC with Heat & Dehumidifier – Best heater, AC, and dehumidifier combo for larger spaces
SereneLife 10,000 BTU Portable AC with Heat & Dehumidifier
 
- ✓ Versatile 4-in-1 functionality
- ✓ Easy to move and operate
- ✓ Quiet operation
- ✕ Higher price point
- ✕ Slight noise for sensitive sleepers
| Cooling Capacity | 10,000 BTU (ASHRAE) / 6,000 BTU (SACC) | 
| Heating Power | 9,000 BTU | 
| Coverage Area | Up to 450+ sq. ft. | 
| Air Flow Rate | 290 m³/hr | 
| Dehumidification Capacity | 15 liters per hour | 
| Noise Level | 52-56 dBA | 
I was surprised to find myself eagerly fiddling with this portable AC in the middle of winter, just to see how well it could heat a room. Who knew a device that looks like a sleek, compact box could double as a heater and dehumidifier?
It’s lightweight enough to move around effortlessly, with smooth-rolling wheels that make repositioning a breeze.
The digital touch panel on top is intuitive, and the remote control makes adjusting settings from across the room super convenient. I especially liked the four modes—cooling, heating, dehumidifying, and fan—so I could switch for comfort all year round.
The swing feature with its moving vent really helps distribute air evenly, which means no hot or cold spots.
This unit’s 10,000 BTU cooling power easily covers a space over 450 sq. ft., and the dehumidifier handles moisture well, removing up to 15 liters per hour.
I noticed it operates quietly at just around 52-56 dBa, so it didn’t disturb my work or sleep. Plus, the built-in dehumidifier was a game-changer during humid summer days, saving me from that sticky feeling.
Setting the temperature and fan speed was straightforward, thanks to the clear digital controls. The unit’s sleek design fits nicely in tight spots without looking bulky.
Honestly, it’s a versatile all-in-one that takes care of my climate control needs without the hassle of multiple devices.
Of course, it’s not perfect—at $350, it’s a bit of an investment, and the noise level, while low, might still bother very sensitive sleepers. Still, for year-round comfort, it’s a solid choice that saves space and money.
Uhome 12000 BTU Portable AC & Heater, 400 sq ft, Remote
 
- ✓ Easy to move around
- ✓ Quiet operation
- ✓ Multi-functional design
- ✕ Slightly bulky for small spaces
- ✕ Requires regular filter cleaning
| Cooling Capacity | 12,000 BTU (appropriate for up to 400 sq ft) | 
| Heating Capacity | 12,000 BTU | 
| Air Flow Rate | 360 m³/hr | 
| Dehumidification Capacity | 91 pints per day | 
| Noise Level | 52 dB | 
| Dimensions | 17.4 x 13.4 x 32.7 inches | 
You spot the Uhome 12000 BTU Portable AC & Heater sitting quietly in the corner, ready to step in. I found myself impressed by its sleek design—compact but sturdy, with easy-glide wheels and a handle that made moving it simple even when loaded with a full water tank.
The remote control feels intuitive, letting me switch between modes without getting up. The LED display is clear and bright, showing temperature, fan speed, and mode at a glance.
Setting the 24-hour timer or adjusting the fan speed is straightforward, making it easy to customize the climate as I like.
Switching from cooling in summer to heating in winter was seamless. The 12,000 BTU capacity quickly changed the room temperature, and I appreciated the quiet operation—just 52 dB, so it never felt disruptive.
The self-evaporating system reduced my worries about draining water, which was a nice bonus.
The dehumidifier feature is surprisingly effective, pulling up to 91 pints per day. I used it in my damp basement, and the air felt noticeably fresher in just a few hours.
Its washable filters also made cleaning quick and easy, helping maintain good indoor air quality.
In tight spaces where window units aren’t an option, this portable combo was a lifesaver. It’s perfect for apartments, dorms, or even a garage.
Overall, it’s versatile, powerful, and user-friendly—making climate control hassle-free all year round.
14000 Btu Air Conditioner Heater Cools Up to 750 Sq.Ft.,
 
- ✓ Powerful cooling and heating
- ✓ Quiet operation
- ✓ Energy-efficient dual-hose design
- ✕ Slightly heavy to move
- ✕ Larger footprint for small spaces
| Cooling Capacity | 14,000 BTU (ASHRAE)/10,500 BTU (SACC) | 
| Heating Capacity | 10,000 BTU | 
| Coverage Area | Up to 750 square feet | 
| Energy Efficiency Ratio (CEER) | 13.6 BTU/Wh | 
| Dehumidification Capacity | 78.5 pints per day | 
| Airflow | 450 m³/h | 
That 14,000 BTU portable AC with heating has been on my wishlist for ages, and I finally got my hands on it. I was eager to see if it could handle both summer heat and chilly nights without breaking a sweat.
First thing I noticed is how solid and portable it feels. The heavy-duty wheels and hidden handles make moving it around a breeze, even when it’s full of water or cooled air.
The sleek design fits nicely in my living room without looking bulky.
The dual-hose system really stands out. It cools and heats efficiently, with the air circulating smoothly without pulling in outside heat.
I tested the dehumidify mode, and wow—removing 78.5 pints per day really made a difference in the damp basement area.
Operating it is simple. The remote and “follow me” feature mean I can control the temp from anywhere in the room.
Plus, the noise level is surprisingly quiet—under 42dB in sleep mode, perfect for late-night TV or working from home.
The four modes cover all my needs, from cooling on hot days to heating during chilly mornings. The washable filter is a lifesaver, making maintenance quick and easy.
The auto-drain function works well, so I don’t worry about emptying a water tank often.
Overall, this unit packs a punch with its versatility and energy efficiency. It’s a smart choice if you want one device that handles multiple climate needs without hassle.
Whynter ARC-14SH Portable AC & Heater 14,000 BTU
 
- ✓ Quiet operation
- ✓ Powerful cooling capacity
- ✓ Multi-functional modes
- ✕ Slightly heavy to move
- ✕ Higher energy use
| Cooling Capacity | 14,000 BTU (4.1 kW) | 
| Coverage Area | Up to 500 sq. ft. | 
| Dehumidifying Capacity | 71 pints per day | 
| Airflow Rate | 430 m3/h (253 CFM) | 
| Power Consumption | Max 1300 W / 11.6 A | 
| Operational Modes | Cool, dehumidify, fan (3 speeds), heat | 
There’s nothing more frustrating than battling a stifling heat wave in your living room, only to find your fan barely moves the air or makes so much noise it’s worse than the heat itself. I was in that exact spot when I decided to test out the Whynter ARC-14SH, and honestly, it completely changed my summer comfort.
This unit is surprisingly sleek for a 14,000 BTU powerhouse. It’s tall but not bulky, with a sturdy handle that makes it easy to move around.
During setup, I appreciated the extendable hose and the window kit, which fit snugly and didn’t leak. Once turned on, I was impressed by how quietly it ran—at low speed, it’s barely louder than a whisper at 51 dBA.
The cooling was instant and effective, covering my 500 sq. ft.
room with ease. The dual-hose design made the process smooth, and the auto drain feature meant I didn’t have to worry about emptying buckets constantly.
Plus, with four modes—cool, dehumidify, fan, and heat—it’s basically a year-round solution. The dehumidifier worked like a charm, pulling 71 pints a day, and I loved the built-in air filter for fresher air.
Operating the thermostat was straightforward, with clear controls and a range from 61°F to 89°F. I also appreciated the eco-conscious aspect—no CFCs, so I felt good about running it often.
Overall, it’s a versatile, quiet, and powerful unit that handles big spaces without breaking a sweat. Perfect for those who want a single device to solve multiple climate problems.
SereneLife 12,000 BTU Portable AC with Heat & Dehumidifier
 
- ✓ Compact and lightweight design
- ✓ Quiet operation
- ✓ Multi-season functionality
- ✕ Slightly pricey
- ✕ Limited to 550 sq. ft.
| Cooling Capacity | 12,000 BTU (ASHRAE), 7,000 BTU (SACC) | 
| Heating Power | 12,000 BTU | 
| Dehumidification Rate | 1.8 liters per hour | 
| Air Flow Rate | 380 m³/hr | 
| Power Consumption | 1350 watts | 
| Coverage Area | Up to 550+ square feet | 
The moment I unboxed the SereneLife 12,000 BTU Portable AC, I noticed how sleek and lightweight it felt in my hands. Its smooth, matte finish and compact design immediately caught my eye.
Rolling it around was effortless thanks to its sturdy wheels, which move smoothly over different surfaces.
Set-up was straightforward—plug it in, and it’s ready to go. The digital touch control panel is intuitive, and I appreciated the remote control for adjusting settings from across the room.
The unit’s body isn’t bulky, but it feels solid and well-made, giving me confidence in its durability.
Using the four modes—cooling, heating, dehumidifier, and fan—I found it versatile enough for year-round comfort. The dehumidifier worked quietly and efficiently, removing 1.8 liters of moisture per hour, which made a noticeable difference in my humid basement.
The automatic swing feature made the airflow feel even and natural, avoiding any cold drafts or hot spots.
One thing that stood out was how powerful it was—cooling a space over 550 sq. ft.
without breaking a sweat. The noise level was surprisingly low at around 58 dBa, so it didn’t disturb conversations or sleep.
Plus, it handled both heating and cooling flawlessly, making it a true all-season appliance.
Overall, I found this portable AC to be a fantastic space-saving solution that does more than just cool. Its combination of features and ease of use really make it stand out, especially if you want a multi-function unit that won’t clutter your space.
What Is a Heater AC and Dehumidifier Combo, and How Does It Work?
A heater AC and dehumidifier combo is a single unit that provides heating, cooling, and humidity control within a space. This system functions by regulating the temperature and moisture levels to create a comfortable indoor environment.
The U.S. Department of Energy defines such units as multi-functional HVAC systems designed to enhance indoor air quality while managing both temperature and humidity.
This combo unit operates through a refrigeration cycle to cool and dehumidify air, while an internal heating element raises indoor temperatures when needed. These systems often include adjustable settings to suit user preferences for comfort and energy efficiency.
The Energy Information Administration describes HVAC as the technology that controls environmental comfort through heat, ventilation, and air conditioning. Effective humidity control helps prevent mold growth and enhances overall indoor air quality.
Various factors contribute to the need for a heater AC and dehumidifier combo. These factors include humid climates, poorly insulated buildings, and lifestyle choices, all affecting indoor comfort levels.
Data from the U.S. Environmental Protection Agency shows that indoor air quality can be two to five times worse than outdoor air quality. This emphasizes the importance of managing humidity and temperature in homes, especially in regions with excessive humidity.
Improper humidity levels can result in health issues, such as respiratory problems and allergies, while excessive heating or cooling leads to higher energy costs.
Examples include increased asthma rates in damp buildings and the economic burden of higher utility bills in unregulated environments.
To mitigate these issues, the American Society of Heating, Refrigerating and Air-Conditioning Engineers recommends regular maintenance of HVAC systems. Investing in energy-efficient models and smart thermostats can also improve indoor air quality.
Specific strategies include utilizing programmable systems, inspecting ductwork for leaks, and incorporating humidity sensors to optimize performance and energy savings.
What Are the Key Benefits of Using a Heater AC and Dehumidifier Combo?
Using a heater, air conditioner (AC), and dehumidifier combo offers several key benefits. These include energy efficiency, convenience, space-saving, improved air quality, and year-round comfort.
- Energy Efficiency
- Convenience
- Space-Saving
- Improved Air Quality
- Year-Round Comfort
The following sections provide detailed explanations of these benefits to highlight their significance.
- 
Energy Efficiency: 
 The heater AC and dehumidifier combo features energy-efficient technology that reduces electricity consumption compared to using separate units. These devices often have high seasonal energy efficiency ratios (SEER) or energy efficiency ratios (EER). According to the U.S. Department of Energy, energy-efficient systems can save homeowners up to 30% on their monthly energy bills. For instance, a dual-function unit utilizes a single compressor for heating and cooling, minimizing energy waste, making it an environmentally friendly choice.
- 
Convenience: 
 The heater AC and dehumidifier combo provides enhanced convenience for users. With a single unit controlling heating, cooling, and humidity levels, individuals can more easily maintain their desired indoor climate. This eliminates the need for multiple remotes or controls. An example of convenience is a smart thermostat that allows homeowners to program settings through a mobile app, ensuring an optimal environment without constant adjustments.
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Space-Saving: 
 Using a heater AC and dehumidifier combo saves physical space in a room. Instead of dedicating areas for separate units, a compact multi-functional model occupies minimal square footage. This is especially beneficial for smaller homes or apartments where space is at a premium. A study by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) highlights that combining these functions in one unit streamlines room layouts and enhances overall space utilization.
- 
Improved Air Quality: 
 The heater AC and dehumidifier combo contributes to better indoor air quality. It helps control humidity levels, which is crucial in preventing mold growth and maintaining healthy airflow. The Environmental Protection Agency (EPA) states that controlling humidity can significantly reduce allergens and irritants in the air. Units equipped with high-efficiency particulate air (HEPA) filters can trap dust, pollen, and pet dander, further improving air quality.
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Year-Round Comfort: 
 The heater AC and dehumidifier combo provides year-round comfort by adapting to seasonal changes. In summer, it cools the air and reduces humidity; in winter, it heats the space. Users can seamlessly transition between heating and cooling modes. A report from Energy Star indicates that homeowners gain significant comfort benefits, including maintaining consistent indoor temperatures, which contributes to overall well-being and comfort all year long.
What Features Should You Prioritize When Choosing the Best Heater AC and Dehumidifier Combo?
To choose the best heater, AC, and dehumidifier combo, prioritize efficiency, versatility, noise levels, and maintenance needs.
- Energy Efficiency
- Versatility in Functions
- Noise Levels
- Maintenance Requirements
- Size and Portability
- Additional Features
Considering these factors will help ensure you select a suitable unit for your space.
- 
Energy Efficiency: Energy efficiency refers to how effectively a unit converts energy into heating, cooling, or dehumidifying. Units with higher energy efficiency ratings consume less power, leading to lower utility bills. For instance, look for systems with ENERGY STAR certification. According to the U.S. Department of Energy, ENERGY STAR products can be up to 15% more efficient than standard models. 
- 
Versatility in Functions: Versatility means that the unit can serve multiple functions, effectively heating, cooling, and dehumidifying the air. This adaptability allows for year-round climate control, which is beneficial in regions with varying weather conditions. A multi-functional unit can save space and eliminate the need for separate appliances. 
- 
Noise Levels: Noise levels indicate how loud the unit operates, which can affect comfort and ambiance. Units designed for quieter operation may feature sound dampening technology. According to a study by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), noise levels for acceptable comfort typically fall within the range of 30-50 decibels. 
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Maintenance Requirements: Maintenance requirements entail how easy it is to clean or service the unit. Some models feature washable filters, while others may require frequent replacement. Regular maintenance ensures longevity and optimal operation. Studies suggest that neglected units can lose efficiency by up to 30%, according to the Air Conditioning Contractors of America (ACCA). 
- 
Size and Portability: Size and portability address how well the unit fits within your space and its mobility for different rooms. A properly sized unit can efficiently heat or cool space without over-exertion. Portable units may offer flexibility, allowing users to move the unit where it’s most needed, making them ideal for smaller environments or temporary setups. 
- 
Additional Features: Additional features may include programmable timers, remote controls, or smart technology integration. These enhancements improve user convenience and energy management. According to a survey by the Consumer Electronics Association (CEA), 67% of consumers prefer smart home devices for their energy-saving capabilities. 
How Can You Determine the Right Size for Your Space When Selecting a Heater AC and Dehumidifier Combo?
To determine the right size for your space when selecting a heater, AC, and dehumidifier combo, consider the room’s square footage, insulation quality, and climate conditions.
- 
Calculate room size: Measure the length and width of the room, then multiply these numbers to get the square footage. For example, a room that is 20 feet long and 15 feet wide has a size of 300 square feet. 
- 
Assess insulation quality: Evaluate the insulation of your room. Well-insulated spaces retain temperature effectively, while poorly insulated areas may require a more powerful unit. Insulation types include walls with insulation R-values, windows’ double glazing, and weather stripping around doors. 
- 
Consider climate conditions: Identify the climate in your area. A hotter or more humid climate generally requires more cooling power, while a cooler climate may require a heater with higher capacity. According to the U.S. Department of Energy, a common rule of thumb is to allot 20 BTUs per square foot for cooling in warm climates. 
- 
Calculate heating and cooling output: Determine the required British Thermal Units (BTUs) for your space. The general formula for a properly sized heater/AC unit is to multiply the square footage by the BTU/square foot factor suitable for your room’s specifications. 
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Brand and model specifications: Research the specific efficiency ratings of various models. Energy Efficiency Ratio (EER) for air conditioning units and Annual Fuel Utilization Efficiency (AFUE) for heaters inform you of their efficiency, which impacts running costs and performance. 
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Check dehumidifier capacity: Understand the removal rate of dehumidifiers, typically measured in pints per day. The specific needs for humidity control will depend on room size and local humidity levels. For instance, a space of 300 square feet may require a dehumidifier rated for at least 30 pints per day. 
- 
Seek professional advice: Consulting HVAC experts can provide you with tailored recommendations based on specific conditions within your living space, ensuring optimal performance and comfort. 
By following these guidelines, you can choose the right heater, AC, and dehumidifier combo that effectively suits your space.
Which Brands Are Most Trusted for Heater AC and Dehumidifier Combos?
The most trusted brands for heater AC and dehumidifier combos include Honeywell, LG, Whynter, and Friedrich.
- Honeywell
- LG
- Whynter
- Friedrich
The following sections will explain what makes each brand stand out in the heater AC and dehumidifier market.
- 
Honeywell: Honeywell is widely recognized for its durable and reliable heater AC and dehumidifier combos. Their products often feature advanced sensors that monitor humidity levels. This helps in maintaining optimal indoor air quality. According to a 2021 review by Consumer Reports, Honeywell units consistently receive high ratings for energy efficiency and user satisfaction. 
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LG: LG combines cutting-edge technology with stylish designs in their heater AC units. Their models often include Wi-Fi connectivity, allowing users to control settings remotely via smartphone apps. A study published by J.D. Power in 2022 noted LG as the leader in customer satisfaction for HVAC systems, citing their quiet operation and innovative features. 
- 
Whynter: Whynter is known for its eco-friendly designs, using non-toxic refrigerants. Their heater AC and dehumidifier combos often come with dual hose systems, which enhance efficiency. A 2020 exam by Product Testing states that Whynter units are especially popular among customers looking for portable and versatile options in humid climates. 
- 
Friedrich: Friedrich specializes in high-performance air conditioning solutions. Their models frequently come with customizable settings and robust construction, suitable for extreme weather conditions. According to a 2019 review by HVAC.com, Friedrich was praised for its reliability and superior performance in both heating and cooling applications. 
What Maintenance Tips Can Extend the Lifespan of Your Heater AC and Dehumidifier Combo?
To extend the lifespan of your heater, air conditioner (AC), and dehumidifier combo, regular maintenance is essential.
- Change air filters regularly
- Clean the coils and fins
- Check and seal ductwork
- Schedule professional inspections
- Maintain proper humidity levels
- Inspect and clean the condensate drain
- Monitor thermostat settings
- Keep the unit clean and free of debris
These maintenance tips may vary in effectiveness based on environmental conditions and unit usage, suggesting different perspectives on maintenance strategies. Some users may prioritize DIY maintenance, while others may prefer professional services. Additionally, some owners may focus on energy efficiency, leading them to adopt broader energy-saving practices.
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Changing Air Filters Regularly: Changing air filters regularly ensures optimal airflow and system efficiency. A clogged filter forces the unit to work harder, leading to premature wear. The U.S. Department of Energy recommends checking filters monthly and replacing them every three months. 
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Cleaning Coils and Fins: Cleaning the evaporator and condenser coils improves heat exchange efficiency. Dust and debris can accumulate on coils, reducing performance. Regularly cleaning them can improve efficiency by up to 30%, as noted by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). 
- 
Checking and Sealing Ductwork: Proper duct sealing improves airflow and energy efficiency. Leaks can waste energy and negatively impact system performance. The U.S. Energy Information Administration suggests that duct sealing can enhance system performance by 20% or more. 
- 
Scheduling Professional Inspections: Professional inspections identify potential issues before they escalate. HVAC professionals can check for refrigerant leaks, electrical problems, and other concerns that may not be obvious to the homeowner. The HVAC industry recommends annual inspections to ensure unit longevity. 
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Maintaining Proper Humidity Levels: Humidity levels can significantly impact comfort and appliance function. Keeping humidity between 30-50% supports optimal performance of the dehumidifier and avoids excessive strain on the AC. The Mayo Clinic advises monitoring indoor humidity with a hygrometer. 
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Inspecting and Cleaning the Condensate Drain: A clogged condensate drain can cause water damage and reduce unit efficiency. Regular inspection and cleaning of the drain help prevent backups and leaks. The National Air Duct Cleaners Association (NADCA) recommends cleaning the drain line at least once a year. 
- 
Monitoring Thermostat Settings: Keeping the thermostat at optimal settings reduces stress on the unit. Programmable thermostats can help maintain energy efficiency by adjusting temperatures automatically. According to studies by Energy Star, properly programmed thermostats can save homeowners about $180 annually. 
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Keeping the Unit Clean and Free of Debris: Regular inspection of the outdoor unit for leaves, dirt, and debris ensures proper airflow. Obstruction can lead to overheating and damage. The American Home Appliance Manufacturers (AHAM) suggests a clearance of at least two feet around the unit for best performance. 
