Best Air Conditioner With Heater for Year-Round Comfort

Finding a reliable air conditioner with heater combines cooling, heating, and dehumidifying in one unit for year-round comfort. Below is a quick comparison table of selected models followed by focused reviews and a practical buying guide to help you choose the right type for your space.

Model	Type	Coverage	Key Feature
Midea 8,000 BTU Smart Inverter	Window	Up To 350 Sq. Ft.	Inverter Heat Pump, Smart App
Uhome 12,000 BTU Portable	Portable	Up To 400 Sq. Ft.	4-in-1: Cool/Heat/Dehumidify/Fan
Whynter 14,000 BTU Dual Hose	Portable	Up To 500 Sq. Ft.	Dual Hose, Auto Drain Dehumidifier
LG 18,000 BTU Window	Window	Up To 1,000 Sq. Ft.	High Capacity, 230/208V Power
COSTWAY 12,000 BTU Mini Split	Ductless Split	Up To 750 Sq. Ft.	Inverter Heat Pump, High SEER2

Midea 8,000 BTU Smart Inverter Window Unit

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This window air conditioner with heat pump combines inverter technology with smart controls. It is rated for rooms up to 350 sq. ft. and supports cooling, dehumidifying and supplemental heating. The heat pump function operates reliably when the outside temperature is above 41°F.

Controls include an LED display, remote, and app/voice integration with Alexa and Google Assistant. Energy Star certification and variable-speed inverter tech target up to 35% energy savings versus standard units. The washable front filter simplifies maintenance.

Best fit: homeowners seeking an efficient window-mounted heat-and-cool solution for medium rooms and smart-home integration.

Uhome 12,000 BTU Portable AC With Heater

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This portable AC and heater combo delivers 12,000 BTU capacity and is designed for rooms up to 400 sq. ft. It offers cooling, heating, dehumidifying and fan modes within a single cabinet for seasonal flexibility.

Key operational features include a self-evaporating system that reduces condensate handling, a 24-hour programmable timer, three fan speeds, auto-swing louver, and a noise rating near 52 dB. The dehumidifier capacity is listed as strong, supporting humid environments.

Best fit: renters or rooms where a portable unit is preferred for temporary or flexible placement without permanent installation.

Whynter 14,000 BTU Dual Hose Portable AC

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The Whynter ARC-14SH is a higher-capacity dual-hose portable air conditioner that covers up to 500 sq. ft. It combines cooling, a heating option, and a patented auto-drain dehumidifier that exhausts condensate automatically in many conditions.

Designed for efficiency and quieter operation, the unit lists an operating noise around 51 dBA on low speed. The dual-hose design improves intake and exhaust efficiency, making it more effective in larger or hotter rooms compared with single-hose models.

Best fit: large rooms or open areas where portable flexibility is needed but performance and reduced condensate maintenance are priorities.

LG 18,000 BTU Window Air Conditioner With Heat

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This high-capacity window unit is rated for very large spaces — up to 1,000 sq. ft. — and includes a supplemental heat function. It uses a 230/208V supply and requires the appropriate LCDI NEMA 6-20 plug for safe operation.

Features include multiple fan and temperature settings, four-way air deflection, a 24-hour timer, and a removable washable filter. The control panel and remote support easy adjustments and routine reminders such as the filter-clean light.

Best fit: larger rooms, basements or apartment spaces where a powerful window-mounted solution with heating capability is needed and compatible high-voltage supply is available.

COSTWAY 12,000 BTU Mini Split Wall-Mounted Unit

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This ductless mini-split offers inverter heat pump technology with AHRI certification and claims high efficiency (20 SEER2 spec in listing). It serves spaces up to 750 sq. ft. depending on layout and insulation.

Operational modes include auto, cool, dry, heat and fan, with multiple fan speeds, ECO and sleep modes, iFEEL temperature sensing, and turbo function. The inverter compressor reduces on/off cycling, improving efficiency and lifespan.

Best fit: homeowners or condo owners who can install a wall-mounted split system and want higher seasonal efficiency plus both cooling and heating without ductwork.

Buying Guide: How To Choose An Air Conditioner With Heater

Choosing the right unit depends on space, installation flexibility, efficiency priorities, and climate. Below are key considerations broken into comparison perspectives.

1. Type And Installation

• Window Units: Cost-effective for rooms with a window; require a secure mount and appropriate power supply. Good for long-term temporary solutions.
• Portable Units: No permanent installation; require a window exhaust kit. Ideal for renters or moving between rooms. Dual-hose models offer better efficiency.
• Mini-Split Systems: Higher upfront cost and professional installation, but provide the most efficient year-round heating and cooling and quieter operation.

2. Capacity (BTU) And Room Size

• Match BTU rating to room square footage. Undersized units struggle to reach set temperatures; oversized units cycle more and can reduce humidity control.
• Consider insulation, ceiling height, sun exposure, and room layout when estimating required capacity.

3. Heating Method And Climate Suitability

• Heat Pumps: Common in window and mini-split units; efficient but less effective below certain outdoor temperatures. Check the lowest outdoor temperature rating.
• Electric Resistance Heat: Some portable units include electric heaters that work regardless of outdoor temp but are less energy efficient than heat pumps.

4. Energy Efficiency And Operating Cost

• Look for Energy Star certification and inverter technology for reduced energy consumption. Inverter compressors adjust speed to match demand and save electricity.
• Compare SEER, EER, or SACC/ASHRAE BTU figures for relative performance among similar types.

5. Noise And Comfort Features

• Noise levels (dBA) are important for bedrooms and offices. Dual-hose and inverter units often run quieter.
• Features such as oscillating louvers, multiple fan speeds, sleep modes and timers improve daily comfort and convenience.

6. Humidity Control And Dehumidifier Capability

• Built-in dehumidifiers help in humid climates. Units with auto-drain or self-evaporating systems reduce maintenance.
• Check listed pints/day dehumidification if moisture removal is a priority.

7. Electrical Requirements And Safety

• Confirm voltage and plug type before purchase, especially for high-capacity window units requiring 230/208V. Use proper LCDI or AFCI protections per local codes.
• Portable and window units usually work on standard household 115V, but large units can need dedicated circuits.

8. Portability, Space, And Long-Term Use

• Portable units offer mobility but occupy floor space; window and split systems free floor area and typically offer higher efficiency for long-term use.
• Consider installation complexity, potential window modifications, and whether permanent installation is acceptable for your housing situation.

9. Maintenance And Filter Access

• Choose units with easily accessible washable filters and clear maintenance procedures. Regular filter cleaning preserves efficiency and indoor air quality.
• For mini-splits, plan for occasional professional servicing of outdoor and indoor units.

10. Controls, Connectivity, And Automation

• Smart controls, Wi‑Fi apps, voice assistant compatibility, and programmable timers improve convenience and energy management.
• Remote controls and onboard displays are standard; specialized features like iFEEL sensors can fine-tune comfort.

Use the buying guide to weigh trade-offs between portability, installation, upfront cost, and ongoing energy use. Match unit features to your climate and daily comfort needs to select the most appropriate air conditioner with heater for your space.