Licensed in NH · ME · MA
★ Veteran Founded (207) 592-6235

MC Electric
Comfort Systems

Veteran Founded · Licensed & Insured

Ductwork Services

New ductwork installation, repair, sealing, and modification for residential and commercial HVAC systems across New England.

✓ Licensed & Insured ✓ Free Estimates ✓ Veteran Owned

Ductwork Done Right the First Time

The most efficient HVAC system in the world will underperform if the ductwork is leaky, undersized, or poorly designed. Industry studies show the average home loses 20–30% of conditioned air to duct leakage — air you paid to heat or cool, escaping into attics, crawlspaces, and wall cavities.

Whether you’re building new, retrofitting an older home, or troubleshooting a system that just won’t cool the upstairs bedrooms, MC Electric Comfort Systems designs and installs ductwork that actually delivers. We follow Manual D design standards, seal every joint, and pressure-test the system before we close the walls.

Installed HVAC ductwork in residential basement with sealed joints

Ductwork Services We Provide

  • New construction ductwork design and installation
  • Retrofit ductwork for existing homes
  • Duct repair and patching
  • Duct sealing (mastic and pressure-tested aerosol sealing)
  • Duct insulation upgrades
  • Return air upgrades for restricted systems
  • Zoning system installation (motorized dampers and zone controllers)
  • Vent and register replacement
  • Flex-to-rigid conversion for problem zones
  • Ductwork modifications for additions and renovations

Signs Your Ductwork Needs Attention

If you’ve been chasing comfort problems for years and changing thermostats hasn’t helped, the ductwork is often the culprit. Watch for:

  • Some rooms never reach the thermostat setpoint
  • Excessive dust on furniture and floors
  • High energy bills with normal usage
  • Visible damaged or disconnected ducts in the attic, basement, or crawlspace
  • Whistling, rattling, or banging sounds when the system cycles
  • HVAC system runs constantly but can’t keep up
  • Mold or moisture issues in ducted areas

Why Choose MC Electric for Ductwork

We’re not a sheet-metal-only shop. We’re a full electrical and HVAC contractor, which means when ductwork modifications affect electrical work — relocated thermostats, new zone control wiring, dedicated blower circuits — we handle it under one roof, one permit, one team.

Schedule a ductwork assessment. We’ll measure airflow, inspect existing ducts, and provide a written assessment with a clear recommendation — no obligation, no pressure.

Schedule a Ductwork Assessment
🎖️ Veteran Founded
Licensed in NH, ME & MA
Same-Day Service
💰 Free Estimates
★★★★★

"Professional, clean work, and the price was exactly what they quoted. Highly recommend MC Electric!"

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