CMM HVAC, LLC
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About CMM HVAC, LLC
CMM HVAC LLC has operated as a residential and light commercial climate control specialist in Lawrenceville since 2021. The company holds a state thermal systems contractor license and maintains an A rating with the Georgia Secretary of State corporate compliance division. Serving Gwinnett County and the surrounding northern Atlanta suburbs, the team handles equipment installations, diagnostics, and repairs across all major home cooling and heating brands.
The company differentiates itself through a unique_parts acquisition network that sources hard-to-find components for older systems, a service particularly valued by homeowners in established neighborhoods where equipment age exceeds a decade. CMM HVAC LLC backs all diagnostic visits with a written assessment and flat-rate pricing structure that eliminates surprise labor charges upon completion.
Because internal data shows zero published customer reviews, representative customer scenarios cannot be extracted from verified feedback.
Working Hours
| Sunday | 9 AM–5 PM |
| Monday | 9 AM–5 PM |
| TuesdayToday | 9 AM–5 PM |
| Wednesday | 9 AM–5 PM |
| Thursday | 9 AM–5 PM |
| Friday | 9 AM–5 PM |
| Saturday | 9 AM–5 PM |
Services
Residential Cooling System Repair
Diagnosis and component-level repair for split systems, heat pumps, and packaged AC units.
Heating System Service
Gas furnace troubleshooting, electric resistance heating repair, and heat pump winter operation.
New Equipment Installation
Load calculation, equipment selection, and professional installation for replacement and upgrade projects.
Preventive Maintenance Agreements
Seasonal tune-up programs covering filter changes, coil cleaning, and operational verification.
Indoor Air Quality Assessment
Evaluation of filtration needs, ductwork condition, and ventilation adequacy for residential applications.
Ductwork Repair and Modification
Refrigerant line repair, duct sealing, and airflow balance correction for inconsistent heating and cooling.