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HVAC Services & Systems

Design
ASSESS | PLAN | ENGINEER
Installation
PERMIT | UPFIT | NEW BUILD
Service
INSPECT | TEST | REPAIR

Since 1996, MSS has specialized in HVAC system design, installation, replacement, repair, preventative maintenance, retrofits, and energy-efficient upgrades for commercial, industrial, healthcare, and mission-critical facilities across the Carolinas.

Our highly trained HVAC technicians are refrigerant certified and participate in ongoing technical training to stay current with the latest HVAC technologies, industry standards, and safety requirements. Backed by 24/7 dispatch and emergency HVAC service, MSS delivers responsive support to help maximize system reliability, efficiency, and occupant comfort.

MSS provides expert service, maintenance, and repair for virtually all commercial HVAC equipment, including centrifugal, screw and reciprocating chillers, process chillers, environmental chillers, gas, steam, and hot water boilers, air handling units (AHUs), make-up air units, rooftop package units (RTUs), computer room air conditioning (CRAC) systems, DDC and pneumatic controls, ventilation systems, refrigeration equipment, cooling towers, pump systems, and more. Whether you need routine HVAC maintenance, emergency repairs, system replacement, or facility-wide upgrades, MSS delivers reliable solutions designed to improve performance, reduce energy costs, and extend equipment life.

Why partner with MSS?

Our team of certified technicians, experienced project managers, and licensed engineers provides responsive support backed by 24/7 service and dispatch. With more than 800 employees across nine locations, MSS offers the local presence, technical expertise, and resources needed to support facilities of every size—from commercial office buildings and healthcare campuses to industrial manufacturing facilities and mission-critical data centers.

Unlike many HVAC service providers, MSS combines mechanical construction, HVAC service, building automation systems, fire alarm, security, and electrical expertise under one roof. This integrated approach helps streamline projects, improve system performance, reduce operating costs, and create long-term value for building owners and facility managers.