Finding a combined air conditioner and heater can simplify year-round climate control. Below is a quick comparison of five popular electric heater/AC combo units selected for different room sizes and installation types.
| Model | Type | Suggested Coverage | Key Feature |
|---|---|---|---|
| LG 23,000 BTU Window Air Conditioner with Heat | Window | Up To 1400 Sq. Ft. | Low Noise Performance |
| Uhome 12,000 BTU Portable Air Conditioner With Heater | Portable | Up To 400 Sq. Ft. | 4-in-1: Cool / Heat / Dehumidify / Fan |
| ROVSUN 8000 BTU Window Air Conditioner With Heat | Window | Up To 350 Sq. Ft. | Wi‑Fi & Voice Control |
| Keystone 23,200 BTU Window-Wall Air Conditioner With 16,000 BTU Heat | Through-Wall / Window-Wall | Up To 1,500 Sq. Ft. | Supplemental Heating Mode |
| SereneLife 12,000 BTU Portable Air Conditioner With Heat | Portable | Up To 550 Sq. Ft. | Built-In Dehumidifier |
Content Navigation
- LG 23,000 BTU Window Air Conditioner With Heat
- Uhome 12,000 BTU Portable Air Conditioner With Heater
- ROVSUN 8000 BTU Window Air Conditioner With Heat
- Keystone 23,200 BTU Window-Wall AC With 16,000 BTU Heat
- SereneLife 12,000 BTU Portable Air Conditioner With Heat
- Buying Guide: How To Choose An Electric Heater/AC Combo
LG 23,000 BTU Window Air Conditioner With Heat
The LG window unit combines 23,000 BTU cooling capacity with supplemental heating, suited for large rooms up to 1,400 sq. ft. Key features include low noise performance (as low as 50 dB in low mode), multiple fan speeds, and a remote control for convenience.
Installation is typical for a window air conditioner and provides steady year-round temperature control. The heat function is noted as a supplemental source rather than a primary whole-home furnace replacement. Multiple speed options let users balance airflow and noise for living rooms, dens, or offices.
Uhome 12,000 BTU Portable Air Conditioner With Heater
This portable 4-in-1 unit provides cooling, heating, dehumidification, and fan modes, sized for rooms up to about 400 sq. ft. The compressor and self-evaporating system aim to reduce noise (~52 dB) and lower condensate maintenance.
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Controls include an LED panel and remote with programmable 24-hour timer and three fan speeds. The heating and cooling ratings are both listed at 12,000 BTU, making it a versatile portable option where window installation is not desired or possible.
ROVSUN 8000 BTU Window Air Conditioner With Heat
The ROVSUN window unit targets smaller rooms up to 350 sq. ft. with 8000 BTU cooling and 4000 BTU heating. It offers five modes (Heat, Auto, Cool, Dry, Fan), multiple speeds, a washable front filter, and a 24-hour timer.
Notable is Wi‑Fi and voice control compatibility (Alexa and Google Assistant) and an accompanying app for remote management. The unit emphasizes easy front access for maintenance and an ECO energy-saver mode for runtime efficiency.
Keystone 23,200 BTU Window-Wall AC With 16,000 BTU Heat
The Keystone unit is designed for large spaces up to 1,500 sq. ft., offering 23,200 BTU cooling and 16,000 BTU supplemental heat. It functions as a through-wall or window-wall solution and includes dehumidification and fan circulation modes.
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Its supplemental heating mode is intended for moderate outdoor temperatures (between ~23°F and 76°F) as an additional heat source, not as a primary heating system. The smart remote reads room temperature to maintain consistent control and adjust performance.
SereneLife 12,000 BTU Portable Air Conditioner With Heat
SereneLife offers a portable option rated for rooms up to 550 sq. ft. Features include built-in dehumidifier, rolling wheels for portability, remote control, and multi-mode operation (cooling, heating, dehumidifier, fan).
The compact design emphasizes mobility between rooms and simple plug-in operation. Automatic swing and adjustable airflow help distribute conditioned air, and the unit provides both cooling and supplemental heating for seasonal flexibility.
Buying Guide: How To Choose An Electric Heater/AC Combo
Selecting the right heater/AC combo depends on room size, installation preferences, noise tolerance, energy use, and control features. The sections below walk through key considerations and comparison perspectives.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.
Room Size And BTU Requirements
- Match BTU To Room Area: Estimate square footage and choose BTU capacity accordingly. Window/through-wall units generally provide higher BTU ratings for larger spaces compared to portable units.
- Overcapacity vs Undercapacity: Oversized cooling units can short-cycle; undersized units struggle to maintain set temperatures. Consider insulation, ceiling height, and sun exposure when sizing.
Installation Type And Location
- Window Units: Require a window opening and typically offer higher cooling and heating capacity for a given cost. Best when a fixed installation is acceptable.
- Through-Wall / Window-Wall: Offer more permanent installation and larger BTU options for big rooms; often used for living areas or converted spaces.
- Portable Units: Require only a window exhaust kit and can be moved between rooms. They are useful for renters or temporary needs but may be less efficient and noisier.
Heating Type And Role
- Supplemental Heat: Many AC units with heat provide supplemental heating (auxiliary) suitable for mild to moderate cold, not as a primary whole-house furnace.
- Electric Resistance vs Heat Pump: Check whether heating is electric resistance or heat-pump based; heat pump heating tends to be more efficient when available.
Noise And Comfort
- Decibel Ratings: Compare listed noise levels, especially for bedrooms or offices where quiet operation matters.
- Fan Speeds And Airflow: Multiple fan speeds and swing/louver controls improve comfort distribution and reduce the perception of noise.
Energy Use And Efficiency
- Energy Efficiency Ratings: Look for energy-saving modes, ECO settings, and any published EER (Energy Efficiency Ratio) or SEER info when available.
- Dehumidification: Units with built-in dehumidifiers can improve comfort and reduce cooling load in humid climates.
Controls, Connectivity, And Features
- Remote And Timers: Remote controls and programmable timers add convenience and can reduce runtime.
- Smart Controls: Wi‑Fi, app integration, and voice assistant compatibility allow remote pre-conditioning and scheduling.
- Filters And Maintenance: Front-access washable filters, condensate handling (self-evaporative systems), and ease of cleaning impact long-term upkeep.
Durability, Warranty, And Support
- Brand Reputation: Consider manufacturer support, warranty length, and parts availability for window and portable systems.
- Installation Complexity: Through-wall and heavy window units may require professional installation; portable units are typically DIY-friendly.
Comparison Perspectives To Weigh
- Performance vs Portability: Window and through-wall units deliver higher capacity per dollar; portable units offer flexibility but can be less efficient.
- Noise vs Power: Higher BTU often comes with more fan noise. Look for models advertising low dB if quiet operation is a priority.
- Smart Features vs Simplicity: Smart-enabled units provide convenience and remote management, while basic models reduce complexity and potential connectivity issues.
- Heating Role: If you need primary heating, confirm the unit’s heating method and capacity; many combos perform best as supplemental heat sources.