Mini Split Installation in Lindenhurst, NY
A new system here will heat from October through May and cool from June through August every year. Tell us about the house, and a licensed contractor who covers Suffolk County will get in touch.
Tell us about the job
It takes about a minute.
A mini-split in Lindenhurst works most of the year
Your mini-split will run from October through May to keep the house warm, then again in June through August for cooling. That's 11 months of the year with almost no break, on a system many homes here are asking to do the job a fuel oil furnace used to do. Winter nights average 26°F, cold enough that the heat pump has to work for its heat rather than just move warm air around.
Any mini-split installed new has to meet the federal minimum, 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. That's the floor. Given how many months a year this system carries the load here, sizing it right for the cold and the heat matters more than the rating on the label.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 26°F
- the average winter night it heats against
- 80°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Is a mini split worth it?
- For most homes here, yes, especially if the alternative is fuel oil. Fuel oil heats 44% of homes in Lindenhurst, and a mini split heat pump can carry a lot of that load on its own, cutting how much oil gets burned through the cold months. It also gives you cooling for the three months of summer when afternoons average 80°F, so one system covers both jobs. Winter nights averaging 26°F mean a mini split alone may need backup heat on the coldest stretches, but a contractor can size that for the house.
- How many rooms can a mini split cover?
- A single outdoor unit can run one indoor head or several, up to eight on most multi-zone systems. Each indoor head heats and cools the room it's mounted in, so the number of rooms you cover depends on how many heads go in, not on the size of the outdoor unit alone. A contractor will look at the layout of the house to figure out how many zones make sense.
- Can a mini split heat a whole house?
- It can, if enough indoor heads are placed to reach every room, but it depends on the house. Homes here need heat from October through May, eight months a year, and winter nights average 26°F, so the system has to be sized for that cold rather than just for mild days. Open layouts with few walls are easier to cover with fewer heads. A contractor can walk the house and tell you whether a whole-house mini split setup will keep every room warm on the coldest nights or whether it makes more sense alongside existing heat.