Systematic Control Corporation

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About Systematic Control Corporation
Systematic Control Corporation serves the Great Neck area as a Carrier dealer with an overall rating of 2.6 stars across 23 customer reviews. The company has operated under the tagline "Doing Things The Right Way Since 1968," offering residential and commercial HVAC solutions including heating, cooling, and indoor air quality services. Their service menu spans repair, new installation, system upgrades, and preventive maintenance agreements, with financing options available for qualified customers.
As a Carrier franchise, Systematic Control stocks equipment from one of the industry's leading manufacturers, giving customers access to a full lineup of cooling and heating systems. The company distinguishes itself through in-house sheet metal fabrication capabilities, allowing custom ductwork and component work without third-party outsourcing. Their indoor air quality division offers testing services, air duct cleaning, and the REME HALO purification system, while their thermostat and zoning services enable precise temperature control across different areas of a property.
Customer experiences documented in reviews reveal significant service inconsistencies. One reviewer documented seven separate occasions where a technician was promised but never arrived, with no communication provided. Another long-term customer described increasingly frequent last-minute cancellations and an owner who stopped returning calls. A third reviewer reported being unable to reach anyone for emergency service during cold weather, leaving their home at 40 degrees. While one reviewer noted their issue was finally resolved after five service attempts, the overwhelming pattern across negative reviews centers on reliability problems, billing confusion, and communication breakdowns.
What Customers Say
All four visible reviewers gave 1-star ratings, with recurring complaints about no-show appointments, rude office staff, billing disputes, and an owner who does not return phone calls. Positive service outcomes are mentioned only after extended frustration, with one reviewer noting resolution only after five separate technician visits over six months.
Working Hours
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| ThursdayToday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | 8 AM–5 PM |
Services
AC Repair & Maintenance
Diagnostic services, tune-ups, and emergency repairs for Carrier and other major brands.
Heating System Service
Furnace repair, boiler maintenance, and heating system installations for residential properties.
New Installation & Replacement
Complete HVAC system installation, including load calculations and equipment selection.
Indoor Air Quality
Air duct cleaning, quality testing, and REME HALO purification system installation.
Thermostats & Zoning
Smart thermostat installation and multi-zone climate control system setup.
Preventive Maintenance
Service agreements with regular inspections to maintain system efficiency and extend equipment life.
Sheet Metal Fabrication
In-house custom ductwork and sheet metal component fabrication services.