The best portable air conditioner and heater combinations as of 2015 are the Whynter 14,000 BTU Dual Hose Portable Air Conditioner with Heater, Danby DPA140HB1WDD 14000 BTU Portable Air Conditioner and Frigidaire FRA12EPT1 Portable Heat/Cool Air Conditioner, according to Fort Comfort. Combination units eliminate the need for having two separate appliances.
The Whynter 14,000 BTU Dual Hose Portable Air Conditioner with Heater comes with air conditioning, heater, fan-only and dehumidifier modes, and it is portable. Special features include a washable pre-filter, carbon air filter and a remote control. It also features a standard window kit.
The Danby DPA140HB1WDD 14000 BTU Portable Air Conditioner with Heater vents directly outside with a single-hose exhaust system. It runs on an ozone-friendly refrigerant and comes with a digital keypad, electronic controls and remote control. The model is easy to set up and is user friendly.
Lastly, the Frigidaire FRA12EPT1 12,000 BTU Portable Heat/Cool Air Conditioner comes with an anti-bacterial mesh filter and air-direction control. The casters and side handles make the unit easy to move from room to room. It includes a remote control, electronic controls, quiet operation and multiple speeds. It is also an energy-efficient model, which makes it a good choice for the environmentally conscious consumer.