My condo is extremely outdated and has plaster walls, giant windows and no duct system. It’s entirely difficult to maintain a comfortable temperature. I’m located in an area withhotand humid summers and extremely serious Wintertide weather. So far, we’ve been managing the indoor temperature with room-by-room solutions. During the summer, the two of us install portable a/cs in the family rooms and make do with fans and open windows in the rest of the house. In the winter, the sub zero temperatures for numerous straight months are a large challenge. Every one of us have a natural gas fireplace installed in the residing room. The heat spreads and can nearly handle demand for the entire first floor. Only the home office fails to benefit from the fireplace. To heat the home office, the two of us invested in a compact ventless gas heater. This solution is not ideal. The ventless oil furnace is a single-stage unit. It is only capable of operating at maximum capacity. It starts up and blasts heat until it achieves the thermostat setting and then shuts down. The constant off-and-on operation creates uncomfortable temperature fluctuations. Plus, the unit requires constant repair. There are several air filters and even the smallest amount of dust will result in a blinking warning light. When the warning light is blinking, the oil furnace won’t shut off. It runs non stop and I worry about the risk of overheating. I would entirely like to update the ventless oil furnace with a ductless heat pump. A ductless cut plan would mount up high on the wall and give both heating and cooling capacity. The newer models feature inverter technology, allowing the component to adapt capacity to exactly meet demand. The ductless heat pump would maintain more even temperature and cost less to operate.