“I was impressed by the thorough maintenance service from MJM HVAC when my Mini Split AC wasn't functioning properly. They fixed issues that others had overlooked near Glen Head.”
Robert H.Glen Head
VerifiedFor Same-day mini split freon leak in Old Brookville, trust MJM HVAC, your local professionals serving Nassau County. Our skilled technicians are prepared to handle any freon leak issue, ensuring your system runs efficiently. High temperatures during warm, humid summers in southeast New York often lead to these problems, and we provide a flat-rate quote to address the leak before commencing work, covering all 2 ZIP codes in Old Brookville.
Licensed · Upfront options · Clean work areas · Written guarantees
These are our most frequently served ZIP codes. Nearby areas may also qualify—call if you do not see yours.
Glen Head · Glenwood Landing · Greenvale · Roslyn Harbor · Sea Cliff · Brookville · Upper Brookville · Matinecock · East Hills · Glen Cove · Locust Valley · Old Westbury
Glen Head · Sea Cliff · Glenwood Landing · Brookville · Upper Brookville · All New York cities
“I was impressed by the thorough maintenance service from MJM HVAC when my Mini Split AC wasn't functioning properly. They fixed issues that others had overlooked near Glen Head.”
Robert H.Glen Head
Verified“After noticing inconsistent cooling, I called MJM HVAC for urgent Mini Split AC Repair. They arrived within the hour and had everything sorted out quickly.”
David L.Old Brookville
Verified“The compressor replacement service I received was backed by a written warranty, and they returned promptly when I had questions in Old Brookville.”
Maria V.Glen Head
VerifiedA real dispatcher is available if your question is not answered here.
Call 8334920770 →Most Old Brookville calls are scheduled the same day, with 24/7 emergency response across Nassau County.
We quote a flat rate up front - typically in the range shown below - and you approve it before we begin.
Call now for fast, licensed Mini Split AC Repair anywhere in Old Brookville and Nassau County.