If you’re building a new home or tearing into a remodel in the Duluth or Superior area, the plumbing decisions you make now will affect your home for decades. The wrong pipe material, an undersized water heater, or a poorly planned layout can mean frozen pipes in January, low water pressure during morning showers, or expensive rework when you want to add a bathroom later.
Here’s what to think through before your plumber starts roughing in the system.
How Home Plumbing Systems Work
Your home’s plumbing has three connected systems working together. The water supply system brings clean water in from the city main or your well, under pressure, to every faucet and appliance. The drainage system moves wastewater out to the municipal sewer or your septic tank. The venting system regulates air pressure in the drain pipes and routes sewer gases safely above the roofline.
When one of these systems has a problem — a slow drain, low pressure at the kitchen sink, sewer smell in the basement — it usually traces back to how the system was designed and installed. That’s why getting the plumbing right during construction or a remodel saves you from chasing problems later.
1. Figure Out Your Water Usage First
Before picking materials or fixtures, start with how much water your household actually uses. A family of five with three bathrooms has very different needs than a couple in a two-bedroom home. If you’re adding a new bathroom, a second kitchen, or a large soaking tub, the supply lines need to handle that extra demand without dropping pressure everywhere else.
A plumber can calculate the flow rate your home needs based on the number of fixtures and their simultaneous use. In our experience working on homes around Duluth and Superior, homeowners often underestimate demand — especially when they’re finishing a basement with a full bathroom.
2. Pick the Right Pipe Material
The pipes running through your walls and floors matter more than most people realize. Here are the three main options:
- Copper: The traditional choice. Copper resists corrosion, handles both hot and cold water, and lasts 50+ years. It costs more upfront and takes longer to install since joints need to be soldered, but many plumbers still prefer it for main supply lines.
- PEX (Cross-Linked Polyethylene): Flexible plastic tubing that’s become the standard for new construction and remodels. PEX is freeze-resistant (a real advantage in northern Minnesota and Wisconsin winters), cheaper than copper, and faster to install since it bends around corners without fittings. Works for both hot and cold lines.
- PVC: Best for drain lines, waste pipes, and venting. Lightweight and affordable, but not rated for hot water supply lines. ABS is a similar option with better impact resistance, common in drain-waste-vent (DWV) applications.
For most new builds and remodels in our area, we recommend PEX for supply lines and PVC for drains. The freeze resistance of PEX alone makes it worth considering when temperatures regularly drop below zero.
3. Choose a Water Heater That Fits
Your water heater is the most expensive single component in the plumbing system, and the wrong choice shows up fast — either in cold showers or high energy bills.
- Tank Water Heaters: Store 40-80 gallons of hot water and keep it ready. Good for larger households with high demand. The downside: they use energy around the clock to maintain temperature, even when nobody’s using water.
- Tankless Water Heaters: Heat water on demand as it flows through the unit. More energy-efficient and compact, but they have a maximum flow rate — running two showers and the dishwasher simultaneously can overwhelm a single unit. Multiple units or a hybrid approach solves this.
- Hybrid (Heat Pump) Water Heaters: Pull heat from the surrounding air to warm the water. Very efficient, but they need a warm-enough space to operate well — a consideration in our cold climate. They work best in heated utility rooms or basements.
We help homeowners weigh these tradeoffs based on their family size, home layout, and what makes sense for the local climate.
4. Add Water-Saving Fixtures
If you’re already opening up walls and running new pipe, it’s the perfect time to install low-flow fixtures. Modern low-flow toilets, faucets, and showerheads use significantly less water without the weak-stream problems that plagued earlier models. You’ll notice the difference on your water bill, not in performance.
A whole-house water filtration system is another smart addition during a remodel. It’s much easier to plumb in during construction than to retrofit later.
5. Plan the Layout With Future Projects in Mind
Think beyond the current project. If you might finish the basement next year or add a half-bath in five years, it’s far cheaper to rough in the drain and supply lines now while the walls are open. Capping off future connection points costs very little during construction but saves thousands compared to tearing into finished walls later.
Group water-using fixtures together when possible. Putting the kitchen, laundry, and bathrooms near each other (or stacked on multiple floors) shortens pipe runs, improves hot water delivery time, and cuts material costs.
6. Hire a Licensed Plumber for Installation
Even the best materials won’t perform if the installation is wrong. Drain pipes need the right slope. Supply lines need proper support. Vents need to terminate correctly through the roof. A licensed plumber knows local building codes — including the specific requirements in Duluth, Superior, and surrounding municipalities — and will make sure everything passes inspection the first time.
Improper installation leads to low water pressure, water hammer (that banging noise when you shut off a faucet), slow drains, and leaks inside walls that you won’t discover until the damage is done.
Related Services
Need Help With Your Plumbing Project?
Whether you’re building new or remodeling, Advantage Air Plumbing, Heating & Cooling can help you plan and install the right plumbing system for your home. Contact us or call contact us to talk through your project.
