“The crew at MJM HVAC did a clean and professional mini split ac replacement job in Portland. They were thorough, and the new unit works perfectly!”
Jennifer A.Portland
VerifiedReliable mini split hissing sound fix in Portland, handled by certified local crews who know Multnomah County. Our professionals are well-versed in addressing the common issues that lead to hissing sounds in mini splits, often caused by refrigerant leaks or system inefficiencies. We provide a flat-rate quote so you can budget for the service.
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.
Maywood Park · West Haven-Sylvan · Raleigh Hills · Milwaukie · West Slope · Dunthorpe · Garden Home-Whitford · Cedar Mill · Cedar Hills · Metzger · Marlene Village · Oak Grove
Maywood Park · West Haven-Sylvan · Raleigh Hills · Milwaukie · Cedar Mill · All Oregon cities
“The crew at MJM HVAC did a clean and professional mini split ac replacement job in Portland. They were thorough, and the new unit works perfectly!”
Jennifer A.Portland
Verified“As a repeat customer, I trust MJM HVAC for evaporator coil cleaning in Portland. They always deliver!”
Paul W.Portland
Verified“The technician clearly explained the thermostat installation and repair work in Portland, making the process easy to understand and trust.”
Nora P.Portland
VerifiedA real dispatcher is available if your question is not answered here.
Call 8334920770 →Most Portland calls are scheduled the same day, with 24/7 emergency response across Multnomah 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 Portland and Multnomah County.