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Claim This BusinessAirnizer HVAC has built a strong presence in Brooklyn with a 4.9-star average rating across 339 reviews, serving homeowners and landlords across the borough as well as neighboring Queens neighborhoods. The team handles residential HVAC projects ranging from routine maintenance to full system replacements, with technicians named in reviews including Eugene, Luc, Sergey, Sergei, Michael, Vlad, and Max. Long days define their schedule, operating Monday through Saturday from 9 AM to 9 PM, which accommodates clients managing tight weekday commitments.
What distinguishes Airnizer from neighboring contractors is their documented experience with Mitsubishi mini-split systems, a brand that appears consistently across Brooklyn residential installs. Reviews note the team works directly with building management to coordinate installations, a logistical advantage in the boroughs dense co-op and condo environment. Technicians are described as taking time to explain system operation and maintenance steps to homeowners after completing work, suggesting a service model built on owner education rather than repeat call-backs.
A pattern worth noting involves projects other contractors declined or mishandled. Franck Koestel described a rooftop condenser replacement and line cleaning that Sergei and Michael completed professionally, while Joyce Szaflitas 18-year-old Mitsubishi units received a deep cleaning that restored function without requiring full replacement. Andy Gong credited Eugene, Luc, and Sergey for coordinating a multi-unit mini-split install over an extended timeline, working through building approval processes. Vlad drew specific praise from Laurel Taylor for diagnosing a refrigerant issue on a malfunctioning unit and adding charge only after confirming the need rather than recommending unnecessary work.
All five detailed reviews award five stars and call out specific technicians by name, most frequently Sergei and Eugene. Three reviews document mini-split or ductless system work, while two address traditional split-system condensers. Negative feedback does not appear in the sample set, with satisfaction centering on technical skill, honest troubleshooting, and respectful communication.
| Sunday | Closed |
| Monday | 9 AM–9 PM |
| Tuesday | 9 AM–9 PM |
| Wednesday | 9 AM–9 PM |
| Thursday | 9 AM–9 PM |
| FridayToday | 9 AM–9 PM |
| Saturday | 9 AM–9 PM |
Full mini-split installation including unit placement, mounting, refrigerant line routing, and electrical connection. Technicians coordinate with building management as needed.
Diagnosis and repair for Mitsubishi ductless wall units, including compressor issues, refrigerant loss, and electrical faults. Documented across multiple five-star reviews.
Evaporator coil cleaning, drain pan service, drain line flushing with disinfecting treatment, and blower wheel restoration for residential split and mini-split systems.
Rooftop condenser replacement, existing unit cleaning, and line flushing. Suitable for multi-unit residential buildings with rooftop mechanical spaces.
Technician inspection to confirm refrigerant loss before adding charge, avoiding unnecessary recharges on systems still holding proper pressure.
Scheduled service visits for residential HVAC systems, including cleaning, inspection, and maintenance guidance tailored to specific equipment brands.