Remodels and new construction are where mechanical work either gets designed or gets improvised, and the difference shows up for the next twenty years. When a wall moves, a room gets added, or a house goes up from a slab, the HVAC, plumbing, and electrical all have to be planned against the new layout rather than patched around it. Martin’s A/C and Electric has worked construction along Bayou Lafourche since 1967 under Louisiana license 40204.
Why Remodels Break Mechanical Systems
A system sized for the original house is not sized for the house plus 400 square feet. Adding a room without recalculating the load leaves the whole house short in August, and the new room worst of all. Opening a wall between a kitchen and living room changes how air circulates and often orphans a return. Bathrooms and kitchens that move need drain slope that the existing framing may not allow. None of these are difficult problems if they are addressed on the drawing. All of them are expensive after the drywall is up.

What We Handle on a Project
- Load calculations and equipment sizing for the finished layout, not the old one.
- Duct design, trunk and branch layout, and return air planning.
- Plumbing rough-in for supply, drain, waste, and vent.
- Electrical rough-in, panel capacity, and dedicated circuits.
- Mini split zones for additions the main system cannot reach.
- Final trim, fixture set, and startup and commissioning.
Coordination Is the Real Service
The value of one company handling mechanical, plumbing, and electrical on a remodel is not the invoice, it is the absence of finger pointing. When the same crew plans the duct chase, the drain stack, and the circuit runs, they do not collide inside a joist bay. We would rather spend an hour with your builder before framing than a day cutting into finished work later. If you already have a general contractor, we work to their schedule and their sequence.
Building for This Climate
New construction here has particular requirements. Duct in a vented attic needs real insulation and sealed joints or it will sweat and stain ceilings. Equipment placed for installer convenience rather than service access becomes a problem the first time it needs a coil cleaning. Raised homes put plumbing in unconditioned space, which means freeze protection matters for the handful of nights a year it gets cold. Elevation and flood considerations affect where equipment can sit. We plan for the climate the house is actually in.
Getting a Realistic Scope
We walk the project, review plans if they exist, and give you a scope that separates what the code requires from what we recommend. That distinction matters on a budget. If you are considering a kitchen or bath, our kitchen plumbing remodels and bathroom plumbing remodels pages cover the plumbing side in more detail, and new construction plumbing covers ground-up work.
Local and Accountable
We are at 16878 W Main St in Cut Off, in business since 1967, licensed in Louisiana under 40204, with a 4.9 star average across more than 200 Google reviews. Call (985) 632-6428 to get us involved early, which is always cheaper than getting us involved late.