Ductless Mini-Split Installation in Brentwood, NY

Anywhere ducts never reached or cannot reach easily. In Brentwood that usually means a rear addition on a ranch, an upstairs dormer on a cape, a converted basement apartment, or a living room the attic air system never cooled well. One wall-mounted head paired with one outdoor unit can handle a single room on its own.

For two-family homes, separate mini split systems give each household its own control, which ends arguments over a shared thermostat. We size each head to its room rather than guessing from the total square footage.

We start outside, because the outdoor unit needs airflow, drainage and room for service. On dense Brentwood blocks, side yards are narrow, so we look at rear walls, wall brackets and raised pads that keep the unit off the ground and clear of drifting snow, which can bury low equipment here in winter.

Inside, the head goes high on an exterior wall where possible, so the line set and condensate drain have a short path out. Before any hole is drilled, we walk you through where the line set cover will run on the siding, where the drain will discharge and where the dedicated electrical circuit will come from.

Yes. Most current mini splits are heat pumps that heat as well as cool, and cold-climate models keep producing heat well below freezing. Many Brentwood owners run one alongside an existing gas furnace or boiler, letting the mini split carry an addition or spring and fall heat while the original system handles the coldest nights.

In winter the outdoor unit runs defrost cycles and sheds water, so it needs a spot where meltwater will not freeze across a walkway. If the outdoor coil looks iced solid, our frozen heat pump guide explains what is normal and what is not.

Brentwood is in the Town of Islip, and a new mini split installation may need approval from the Town of Islip Department of Planning and Development at 655 Main Street in Islip. K2 does not file town permits, so please confirm the requirements with that office before your installation is scheduled.

PSEG Long Island runs heat pump rebates; they are claimed through a participating contractor or directly with PSEG Long Island; check psegliny.com. We provide manufacturer warranty registration help, described on our warranty page. Rheem KwikComfort financing, with credit provided by Synchrony Bank, subject to credit approval, is outlined on our financing page.

Clean filters and a clear drain do most of the work. Our Brentwood records include follow-up visits on mini splits as well as installs, such as a capacitor change and a refrigerant leak check with a small top-off. Pollen and pine needles clog outdoor coils here, and the filters inside the heads load up faster than most owners expect.

Rinse the indoor filters every few weeks in heavy use, keep the outdoor unit clear of leaves and snow, and have the system checked once a year through our maintenance plans. Our ductless mini split page has more on how we approach these systems.