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About Greisen Air Conditioning
Greisen Air Conditioning serves the Miami metropolitan area with a perfect 5.0-star rating drawn from 24 homeowner reviews. The contractor specializes in residential air conditioning replacement, new system installations, and ongoing maintenance programs. Customers in the Miami area have praised the team for handling full permit processes, breaker upgrades, and thermostat installations as part of complete system replacements.
The company distinguishes itself through same-day availability for urgent replacements, maintaining inventory of common AC units to minimize wait times. Reviewers note the team handles entire installation projects including electrical work, permits, and post-installation walkthroughs on new smart thermostats. Each replacement receives full manufacturer warranty documentation.
Customers describe technicians named Jonathan, John, and Bruce arriving promptly for estimates and installations. One reviewer detailed how the team resolved a breakdown situation by directly contacting the manufacturer to expedite parts, while another noted the crew arrived on time, respected the home, and cleaned up after installing a new system. Technicians demonstrated the smart thermostat interface before completing each job.
What Customers Say
All 24 reviewers award 5 stars, with multiple customers highlighting same-day estimate availability and manufacturer advocacy during urgent breakdowns. Three reviewers specifically name Jonathan, John, and Bruce for professional installation and responsive service.
Services
AC Replacement
Complete removal of old units and installation of new air conditioning systems with breakers and thermostats included.
New HVAC System Installation
Full residential system installation from consultation through permitting and final demonstration of smart thermostat features.
Emergency AC Repair
Same-day availability for urgent replacement situations with inventory of common units on hand.
Smart Thermostat Setup
Professional installation and homeowner instruction on smart thermostat programming before job completion.
Preventive Maintenance Programs
Service agreements with regular scheduled maintenance visits to maintain system performance and validity.