Concrete Cutting & Core Drilling for HVAC Contractors
Core drilling and wall cutting for ductwork, refrigerant lines, exhaust venting, and mini split installations — fast scheduling across MA
Concrete Cutting Services for HVAC Contractors
REDCORE is the concrete cutting partner that HVAC contractors throughout Massachusetts rely on for the wall, floor, and foundation penetrations their mechanical installations require. Whether you are installing a commercial rooftop unit that needs 18-inch duct penetrations through the roof deck, running refrigerant lines for a ductless mini split system through a concrete foundation wall, or cutting a new exhaust vent through a block wall for a commercial kitchen, REDCORE drills and cuts the penetrations you need at the exact sizes, positions, and angles your mechanical design specifies.
HVAC penetrations range widely in size and complexity. A residential mini split line set requires a 3-inch hole through an exterior wall. A bathroom exhaust fan needs a 4-inch penetration. A commercial duct run may require a 24-inch core through a concrete floor slab. A refrigerant piping penetration through a fire-rated wall needs to be precisely sized for the firestop assembly. REDCORE handles all of these applications with the right equipment for each job, from portable hand-held core drills for small penetrations to rig-mounted heavy-duty drills for large-diameter cores through reinforced concrete.
We understand that HVAC contractors are often among the last mechanical trades on a project, working against tight timelines with limited access. REDCORE prioritizes responsive scheduling and efficient execution for HVAC penetration work. Our operators arrive with the correct drill sizes and wall saw equipment based on your submittal or specification, complete the penetrations accurately, and hand off clean holes ready for your installers to begin routing duct, piping, and line sets.
Common Projects We Handle for HVAC Contractors
Why HVAC Contractors Choose REDCORE
We Understand Mechanical Penetration Requirements
Our operators know that HVAC penetrations require precise sizing for duct connections, pipe sleeves, and firestop assemblies. We drill to the exact diameters your mechanical specifications call for, not approximate sizes.
Full Range of Penetration Sizes
From 3-inch mini split line set holes to 48-inch cores for major duct runs, REDCORE carries diamond bits and saw blades to handle every penetration size an HVAC project demands.
Angled and Pitched Drilling
Condensate lines need downward pitch. Exhaust vents need slight angles. We drill at whatever angle your installation requires, not just straight through.
Responsive to Your Schedule
HVAC installation timelines are often compressed. REDCORE prioritizes fast mobilization for mechanical penetration work so your installers are not waiting on holes.
Benefits of Working With REDCORE
Need Penetrations for an HVAC Installation?
Call REDCORE for fast, accurate core drilling and wall cutting sized to your mechanical specifications. From mini split line sets to commercial duct penetrations, we drill every hole your HVAC project requires. Free estimates.
Request Free EstimateCall: +1 (413) 666-2026Service Areas
We serve all of Western and Central Massachusetts, including:
Common Applications
Industries You Serve
Frequently Asked Questions — Concrete Cutting for HVAC Contractors
What diameter core holes do you drill for mini split line sets?
Mini split refrigerant and condensate line sets typically require a 3-inch core hole through the exterior wall. We drill the hole at a slight downward pitch toward the outside so condensation drains outward rather than back into the living space. For multi-zone systems that run several line sets through the same wall, we may drill a single larger 4-inch or 5-inch hole instead.
Can you cut rectangular openings in concrete walls for ductwork?
Yes. When round cores are not large enough for rectangular duct runs — such as 12×12 or 14×24 supply and return ducts — we use a wall saw to cut precise rectangular openings. The wall saw makes straight, clean cuts in concrete and masonry walls up to 24 inches thick, creating openings sized exactly to your duct dimensions plus clearance for insulation or fire stops.
How do you handle core drilling through fire-rated concrete walls?
We drill the hole at the exact diameter your firestop manufacturer specifies for the penetrant type (pipe, duct, cable). A properly sized hole is critical because firestop assemblies are tested and listed for specific annular space dimensions. We record the wall thickness and hole diameter for your firestop installer and leave the hole edges clean for a proper seal.
Can you drill at an angle for sloped condensate lines and exhaust vents?
Yes — angled drilling is routine for us. Condensate drain penetrations typically need 1/4-inch per foot of downward slope, and exhaust and intake vents may require specific pitch angles. Our core drill rigs are adjustable and we set the angle before drilling to match your mechanical specifications.
Need Penetrations for an HVAC Installation?
Call REDCORE for fast, accurate core drilling and wall cutting sized to your mechanical specifications. From mini split line sets to commercial duct penetrations, we drill every hole your HVAC project requires. Free estimates.