I'm in the process of remodeling a screened-in front porch into a fully enclosed four-season living space, which is about 195 square feet. I'm considering installing a ductless mini-split system to heat and cool the room effectively throughout the year. Since I live in an area with extreme temperatures, having a reliable and energy-efficient system is crucial. I've narrowed it down to a few options: the Pioneer Inverter++ 12,000 BTU, Senville LETO Series 9,000 BTU, Pioneer 9,000 BTU, and Mitsubishi GS-Series 9,000 BTU. I'd love to get your thoughts or experiences with these models or any other recommendations you might have. What would work best for a smaller space like mine to ensure it's comfortable in every season?
2 Answers
One thing to consider is how much you'll actually be heating and cooling the porch. Will you need it every day or just for certain occasions? If it's mostly seasonal use, that might influence which model will be best for you!
If your budget allows, I'd highly recommend the Mitsubishi units. They're really top-notch! Just make sure to choose one that works well for heating in colder weather, as they perform reliably even at low temperatures. The Mitsubishi GS-Series is especially known for strong year-round performance, which could be just what you need for your porch.

I expect to use it heavily during the summer months for cooling and need heating throughout the winter, especially in December through February.