Finding an air conditioner water heater unit that offers both reliable cooling and heating can maximize comfort throughout the year, from hot summer days to chilly winter nights. Below is a selection of top models that combine air conditioning and heating capabilities with added features like dehumidification, smart controls, and portability. The summary table provides an overview of key specs to guide your choice.
Product | Cooling BTU | Heating BTU | Room Coverage (sq.ft.) | Smart Features | Type |
---|---|---|---|---|---|
BLACK+DECKER Smart Portable AC with Heat | 14,000 (ASHRAE) | 12,000 | Up to 700 | Wi-Fi & Voice Control | Portable |
Midea 12,000 BTU Smart Inverter Window AC with Heat | 12,000 | Supplemental Heat | Up to 550 | App & Alexa/Google Voice | Window Unit |
Gasbye Dual Hose Portable Air Conditioner | 14,000 (ASHRAE) | Not Specified | Up to 500 | Backlit Remote Control | Portable Dual Hose |
Aoxun 10,000 BTU Portable AC and Heater 4-in-1 | 10,000 | 10,000 (Heating mode) | Up to 268 | Remote & Timer | Portable |
Dreo 12,000 BTU Portable Air Conditioner with Heat | 12,000 (ASHRAE) | Heating Included | Up to 550 | App, Voice, Remote Controls | Portable |
BLACK+DECKER Smart Portable Air Conditioner with Heat

This four-in-one unit brings together 14,000 BTU cooling and 12,000 BTU heating capabilities, ideal for rooms up to 700 square feet. Aside from cooling and heating, it also functions as a dehumidifier and fan, increasing year-round utility.
The portable design measures 16.5” x 14.06” x 27.09”, making it easy to move across rooms. It supports Wi-Fi connectivity and can be controlled via a mobile app compatible with iOS and Android, as well as voice commands through Amazon Alexa or Google Assistant. The “Follow Me” remote enhances comfort by using the remote’s temperature sensor for precise climate control.
Midea 12,000 BTU Smart Inverter Air Conditioner with Heat

Designed for rooms up to 550 square feet, this Energy Star certified Midea unit combines a 12,000 BTU cooling capacity with supplemental heat. It features inverter technology that significantly improves energy efficiency, with up to 35% energy savings compared to typical standards.
The electronic controls include multiple modes (Heat, Auto, Cool, Dry, Fan), adjustable fan speeds, a 24-hour timer, and swing louvers for airflow direction. Users can control the unit remotely through an app or voice assistants such as Alexa and Google Assistant. Note that the heat pump will not operate if outside temperatures drop below 41°F.
Gasbye Dual Hose Portable Air Conditioner

This 14,000 BTU ASHRAE dual-hose portable air conditioner stands out for its dual-hose design that prevents negative pressure and improves cooling efficiency in rooms up to 500 square feet.
The unit utilizes a full DC inverter compressor for peak energy efficiency rated at a 13.6 CEER, and reduces noise levels to about 45 dB during inverter operation. Remote control with backlit display adds convenience, while advanced compressor noise reduction enhances quiet operation beneficial for bedrooms or offices.
Aoxun 10,000 BTU Portable All-Season Air Conditioner and Heater

The Aoxun 4-in-1 unit delivers cooling, heating, dehumidifying, and fan options, making it a versatile solution for spaces up to 268 square feet.
Its 10,000 BTU capacity offers rapid cooling while the heating function warms up rooms to maintain comfortable temperatures between 62°F and 86°F. It operates quietly at ≤55 dB and features a 24-hour timer alongside a child lock for safety. This makes it suitable for home and dorm environments requiring compact, multi-mode climate control.
Dreo 12,000 BTU Portable Air Conditioner with Heat

This portable unit offers 12,000 BTU cooling power suitable for coverage up to 550 square feet. It integrates cooling, fan, and dehumidifier settings, simplifying comfort management.
The noise isolation system reduces operational sound to 46 dB, making it ideal for bedrooms and quiet spaces. Control options include a mobile app, remote, and voice assistants like Alexa and Google Assistant. The temperature can be set between 65°F and 86°F, accommodating personal preference for year-round use.
Buying Guide: Choosing the Right Air Conditioner Water Heater Unit
Cooling and Heating Capacity
Identify the BTU ratings for both cooling and heating relative to the size of your room. Larger rooms require higher BTU values for efficient temperature control. Portable units typically state coverage area to guide you.
Energy Efficiency
Look for units with Energy Star ratings or high CEER (Cooling Energy Efficiency Ratio) values for electricity savings. Inverter technology enhances efficiency by adjusting compressor speed based on cooling or heating demand.
Multi-Functionality
Consider models with additional features such as dehumidification, fan modes, and air purification. These can improve indoor air quality and comfort beyond basic temperature control.
Smart Controls and Connectivity
Smart air conditioners allow remote control via smartphone apps or voice assistants (Alexa, Google Assistant). This convenience enables you to pre-cool or heat a room remotely and adjust settings effortlessly.
Portability and Installation
Portable units offer flexibility and ease of relocation but may require venting through windows. Window units need professional or DIY installation but typically provide more powerful performance for their size.
Noise Level
If placing the unit in bedrooms or offices, check the decibel ratings. Lower noise (below 50 dB) improves comfort and sleep quality.
Additional Components and Accessories
For systems using relays or water heaters, ensure compatibility of parts like relays for air conditioner water heaters. Some users might also explore evaporative coolers as an energy-efficient alternative in dry climates.
Durability and Warranty
Review manufacturer warranties and reliability ratings. Durable hardware with solid customer support will ensure long-term satisfaction.