Water Heater Installation in Caldwell, ID: How to Choose the Right System (and Avoid Expensive Surprises)

April 28, 2026

A practical guide for Treasure Valley homeowners who want reliable hot water, predictable costs, and a clean install.

If your water heater is leaking, running out of hot water, making popping noises, or sending rusty water to the tap, you’re already in decision mode. The hard part isn’t just replacing a tank—it’s choosing the right size, right type, and right venting for your home in Caldwell and the surrounding Treasure Valley. Cloverdale Plumbing has helped local families and businesses with water heater installation and repair for decades, and this breakdown is designed to help you understand your options before you commit.

What “good” looks like after a new water heater install

Stable hot water: showers don’t go cold halfway through, even on busy mornings.

Safe venting and combustion: gas units draft properly; no backdrafting or soot issues.

Code-minded connections: correct shutoff, expansion provisions where required, and a properly run T&P discharge line.

Longer lifespan: the unit is sized correctly and protected from sediment, pressure swings, and corrosion.

Tank vs. tankless vs. heat pump: what’s best for a Caldwell home?

There’s no single “best” water heater—there’s the best match for your household size, usage patterns, mechanical room setup, and budget. Here’s a plain-English comparison:

Type Best for Pros Watch-outs
Standard tank (gas or electric) Most homes that want predictable cost and simple replacement Lower upfront cost; straightforward service; good reliability Limited hot water “reserve”; sediment can reduce efficiency over time
Tankless (on-demand) Homes wanting long showers or back-to-back usage without “running out” Continuous hot water; space-saving; long service life when maintained May need gas line upsizing + special venting; scale buildup requires regular descaling in many areas
Heat pump water heater (hybrid) Homes targeting high efficiency (often best in garages/utility rooms) Very efficient; can lower electric water heating costs substantially Needs enough air volume and drainage; can cool/dehumidify the space; higher upfront cost

Pro tip: Before choosing tankless, confirm venting route, combustion air needs, and whether your gas line size supports the unit’s input rating. Those details often determine whether “tankless is easy” or “tankless becomes a larger project.”

Sizing a water heater: the mistakes that cause cold showers (or wasted money)

For tank-style units, oversizing can mean paying extra to heat water you don’t use. Undersizing shows up as “we run out of hot water every morning.” Proper sizing is based on:

Household size and schedule: two showers at once? back-to-back baths? laundry during morning routines?

Incoming water temperature: colder inlet water requires more heating to reach the same shower temperature.

Fixture flow rates: efficient showerheads and faucets can reduce demand without sacrificing comfort when you choose certified products.

Quick “Did you know?” facts that impact water heater performance

120°F is a common target setting for many households—hot enough for daily use while improving safety and helping reduce energy use. (energy.gov)

Mineral buildup can shorten efficiency—and temperature choices can affect mineral buildup and corrosion over time. (energy.gov)

WaterSense-labeled fixtures are independently certified for water efficiency and performance, making them a strong pairing with any water heater upgrade. (epa.gov)

A WaterSense-labeled showerhead can save meaningful costs—EPA materials commonly cite savings of more than $75/year in water + energy costs for a typical household. (epa.gov)

What’s included in a professional water heater installation?

“Install a water heater” sounds simple until you look at what’s actually happening behind the scenes. A clean, professional installation is about safety, longevity, and serviceability—not just getting hot water back on.

1) Matching the heater to your home’s fuel, venting, and space

Gas, electric, and hybrid units each have different requirements. For gas units, vent type and draft performance matter. For hybrids, the room’s air volume, temperature range, and condensate drainage matter.

2) Setting up safety components correctly

The temperature & pressure (T&P) relief valve must be correctly installed and discharged safely. Shutoffs should be accessible. If you have a closed plumbing system, pressure management can become a real issue that affects valves, fixtures, and the new heater.

3) Protecting the investment with smart add-ons (when appropriate)

Depending on water quality and system design, a sediment strategy, scale control, or water softening can help reduce wear. If you’ve had repeated issues (noisy tank, frequent element failures, reduced capacity), it’s worth talking through your home’s conditions instead of installing “the same thing again.”

If you’re comparing bids, ask whether removal/haul-away, permitting (if needed), venting modifications, and disposal of the old unit are included. “Cheap install” often becomes expensive when essential pieces are missing.

Step-by-step: how to prepare for a smooth water heater replacement

Step 1: Note the symptoms (it helps diagnose the cause)

Write down what you’re seeing: leaking from the base, water around the pan, discolored hot water, rumbling/popping, inconsistent temperature, or repeated pilot issues (gas). These clues help determine whether you need a replacement or a repair.

Step 2: Capture a few basics

Snap a photo of the unit’s label, the venting above the heater (if gas), and the space around it. Also note the tank size (gallons) and fuel type. This speeds up accurate recommendations and parts planning.

Step 3: Decide what you want to improve

A replacement is the best time to fix chronic frustrations: not enough hot water, slow recovery, high bills, or a cramped mechanical area. Mention any upcoming bathroom/kitchen upgrades too—fixture changes affect hot water demand.

Step 4: Choose a safe temperature strategy

Many homes target a 120°F setting for safety and savings, but your household needs (and manufacturer guidance) matter. If you need hotter storage for capacity, a mixing valve approach may be part of the conversation. (energy.gov)

Local angle: what Caldwell homeowners should keep in mind

Caldwell and the Treasure Valley have a mix of older and newer neighborhoods, which means water heater needs vary widely. Two local realities show up often:

Older homes may have tighter “mechanical constraints”

If your current water heater is in a small closet, basement corner, or older garage setup, venting routes and clearances can limit what you can install without modifications. This is especially important when switching from a standard atmospheric vent to power vent or tankless.

Water quality awareness matters for longevity

Many households benefit from talking about sediment and scale prevention—especially if you’ve seen mineral buildup on fixtures, fluctuating hot water performance, or premature component failures. If your home already uses treatment equipment (or you’re considering it), it’s smart to coordinate water heater selection and maintenance as a single plan.

Want help beyond the heater itself? Cloverdale Plumbing also handles water softening and treatment systems and can advise on how treatment choices affect plumbing fixtures and hot water equipment.

Need water heater installation in Caldwell, ID—fast, clean, and correctly sized?

If your current unit is leaking or you’re planning an upgrade, Cloverdale Plumbing can help you choose the right water heater, confirm venting and capacity needs, and install it with safety and long-term reliability in mind.

If you have an after-hours leak or no hot water at the worst possible time, you can also review 24/7 emergency plumbing services.

FAQ: Water heater installation (Caldwell & Treasure Valley)

How do I know whether I need repair or full replacement?

If the tank is leaking from the body or base, replacement is usually the realistic option. If it’s inconsistent temperature, a tripped breaker, a failed element, or a gas control issue, a targeted repair may restore performance—especially if the tank is otherwise sound.

Is tankless always better than a tank?

Not always. Tankless can be an excellent choice for continuous hot water, but the home must support the installation (gas line sizing, venting route, and maintenance needs). A well-sized, well-installed tank heater is still a dependable solution for many Caldwell homes.

What temperature should my water heater be set to?

Many households set water heaters to about 120°F for a balance of comfort, energy savings, and scald prevention—then adjust as needed for your home and manufacturer guidance. (energy.gov)

How can I make my hot water last longer without a bigger heater?

Two common options: (1) install efficient showerheads/faucet aerators (look for independently certified WaterSense products), and (2) address sediment/scale so the heater can transfer heat efficiently. (epa.gov)

Do you offer related plumbing services if the install uncovers other issues?

Yes. If the install reveals aging shutoffs, leaking supply lines, or drainage concerns, Cloverdale Plumbing can also help with pipe replacements and repairs, plus drain cleaning if there’s a broader plumbing performance issue.

Glossary (helpful terms to know)

T&P Relief Valve

A safety valve on storage water heaters designed to open if temperature or pressure becomes unsafe. It must discharge through a properly installed drain line.

Sediment

Mineral particles that settle in the bottom of a tank water heater. Sediment can reduce efficiency, create noise, and contribute to premature wear.

Power Vent

A type of gas water heater that uses a fan to exhaust flue gases through a pipe (often PVC), allowing more flexibility than traditional vertical venting.

WaterSense

An EPA program that labels independently certified water-efficient products (like showerheads and faucets) designed to save water without sacrificing performance. (epa.gov)

Plumbing Remodels in Nampa, Idaho: How to Upgrade Your Kitchen or Bath Without Surprise Leaks, Delays, or Code Issues

April 27, 2026

A remodel should feel exciting—not like a plumbing emergency waiting to happen

Remodeling a kitchen or bathroom in Nampa often starts with design choices—tile, cabinets, fixtures—then quickly turns into questions about what’s behind the walls: aging supply lines, undersized drains, hidden corrosion, and venting that “sort of worked” for years. The plumbing portion of a remodel is where budgets and schedules can get derailed fast. This guide walks through what typically causes surprises, how to plan your plumbing scope, and how to keep your project moving with fewer callbacks and less risk of water damage.

Why plumbing is the make-or-break part of a kitchen or bath remodel

Plumbing remodels aren’t just “moving a sink.” A kitchen and bath system depends on three things working together: supply (hot/cold water), drainage (waste lines sized and sloped correctly), and venting (airflow that prevents slow drains and sewer odor). When any one of these is compromised, you can see symptoms like gurgling drains, recurring clogs, inconsistent hot water, or odors that appear after the remodel is “finished.”
Common remodel trigger: Modern fixtures can actually expose older plumbing weaknesses. A new high-flow shower valve, a deep kitchen sink, or a relocated toilet can reveal corrosion, poor venting, or partial blockages that older, smaller fixtures “tolerated.”

What typically causes surprise costs during plumbing remodels

1) Old pipe material exposed after demolition

Once walls are open, it’s common to find older galvanized steel or aging sections tied into newer plumbing. Galvanized piping can corrode from the inside out, restricting flow and increasing leak risk—especially at threaded joints. If you’re already opening walls for a remodel, it can be the most cost-effective time to replace vulnerable sections rather than patching repeatedly.

2) Drain/vent limitations when moving fixtures

Moving a sink, shower, or toilet even a few feet can require new vent routing and proper drain slope. If venting can’t be tied in correctly, you may end up with slow drains or siphoned traps that lead to odor. Planning the plumbing layout early prevents rework after cabinets and floors are installed.

3) Hidden buildup in kitchen lines

Kitchen drains accumulate grease, soap, and food residue. If your remodel adds a deeper sink or new disposal, that extra load can be the “last straw” for a partially restricted line. A professional cleaning (and in some cases hot water jetting) can restore full diameter and reduce the odds of a backup into a brand-new cabinet.

4) Water quality considerations (hardness and scale)

In the Treasure Valley, water hardness can vary by neighborhood and water source, and harder water can accelerate scale in water heaters, fixtures, and some appliances. If you’re upgrading showers, faucets, or a new water heater, it’s a smart time to talk about water softening or filtration so your new finishes stay cleaner and your equipment runs more efficiently.

Step-by-step: A practical plumbing plan for a smoother remodel

Step 1: Decide what must move (and what shouldn’t)

Keeping fixtures near existing drain/vent locations is one of the simplest ways to reduce labor, wall repair, and permitting complexity. If you want a new layout, prioritize function and serviceability: access panels for tubs, shutoff valves that can be reached, and cleanouts that won’t be buried behind built-ins.
 

Step 2: Inspect supply piping and shutoffs before finishes go in

Your remodel is a perfect time to add or replace fixture shutoffs, verify pressure, and evaluate the condition of older piping. If you’re seeing low pressure at certain fixtures, rust-tinted water at times, or frequent small leaks, those are signals to evaluate targeted replacement rather than cosmetic-only upgrades.
 

Step 3: Confirm drain capacity and venting for new fixtures

Larger tubs, multi-spray showers, and busy household kitchens can stress old drain lines. A plumber can verify whether you need a simple reroute, a vent correction, or a more thorough drain cleaning before the remodel closes up the wall.
 

Step 4: Plan water heater capacity around the new bathroom experience

A remodel is when homeowners realize their current water heater is undersized (or near end-of-life). If you’re adding a soaking tub, dual shower heads, or simply improving comfort, ask about capacity, recovery rate, and maintenance (especially flushing in harder-water areas).
 

Step 5: Schedule rough-in, inspection, then finish install—no shortcuts

A clean sequence prevents leaks behind brand-new surfaces: rough-in plumbing first, verify inspections as required, then install finishes, then set fixtures and test thoroughly. The goal is simple: pressure test, drain test, then close the wall.

Quick comparison table: Common remodel plumbing upgrades (and what they solve)

Upgrade Best for What it helps prevent
Replace old shutoff valves Kitchens, vanities, laundry tie-ins Unable to stop a leak quickly; seized valves
Targeted repipe (problem sections) Older homes, mixed pipe materials Pinholes, low flow, repeat leaks behind walls
Drain cleaning or hot water jetting Recurring clogs, slow kitchen drains Backups into new cabinets; emergency calls mid-remodel
Water heater upgrade or maintenance New showers/tubs; growing families Running out of hot water; premature heater failure
Water softening / treatment Hard water areas; new fixtures & glass Scale buildup; spotty glass; reduced fixture performance

Local angle: What Nampa & Treasure Valley homeowners should keep in mind

Homes across Nampa and the Treasure Valley span multiple building eras—from mid-century neighborhoods to fast-growing new developments. That means remodel plumbing needs can vary widely:

 
If your home is older: A remodel may reveal legacy materials, previous DIY alterations, or sections that have “worked” but no longer meet modern expectations for flow and reliability.

 

If your household is busy: Morning demand (showers, laundry, dishes) can spotlight water heater limitations. Remodeling is a great time to match hot water production to how you actually live.

 

If you’ve battled mineral scale: Consider treating water as part of the remodel plan—especially when you’re investing in new fixtures, glass enclosures, and a new water heater.

 
Permits & inspections: Many plumbing changes during a remodel can require permits/inspections depending on scope (moving drains/vents, adding fixtures, water heater changes, etc.). A licensed plumbing contractor can help you identify what applies to your project in Nampa/Canyon County so you don’t face rework later.

Planning a kitchen or bathroom remodel in Nampa?

Cloverdale Plumbing has served the Treasure Valley for decades, with the team and equipment to support remodel rough-ins, fixture installs, drain solutions (including hot water jetting), pipe repairs, and water heater planning—so your remodel finishes stay dry and dependable.

FAQ: Plumbing remodels (kitchen & bathroom)

Do I need a plumber if I’m “just replacing fixtures”?

If shutoffs are old, supply lines are questionable, or you’re changing sink depth, faucet type, or adding a disposal/dishwasher connection, a plumber helps prevent leaks that can damage cabinets and subflooring. Even simple swaps often reveal worn valves or outdated connections.
 

How can I reduce the risk of a drain backup during my remodel?

If you’ve had slow drains, gurgling, or repeat clogs, schedule professional drain cleaning before new cabinets, flooring, or vanities go in. For heavy grease or stubborn buildup, hot water jetting may be recommended to clean pipe walls more thoroughly.
 

Is it worth replacing old pipes if they aren’t leaking yet?

If walls are open anyway and you’re seeing warning signs (pressure drops, discolored water, recurring pinhole leaks, or mixed/aging materials), replacement can be more cost-effective than waiting for a failure behind finished surfaces. A plumber can help prioritize what’s most at risk so you don’t overdo it.
 

Can I move a toilet, shower, or sink anywhere I want?

Usually it’s possible, but it may require new venting routes and careful drain slope. The farther you move fixtures from existing plumbing, the more likely you’ll need additional work under the floor or in walls (and potentially inspections). Getting the plumbing layout reviewed early prevents redesign later.
 

Should I think about water treatment during a remodel?

If you notice scale, white spotting, or reduced shower performance over time, a water softener or filtration system can protect new fixtures and help water heaters run better. It’s often easiest to integrate when plumbing is already being adjusted.

Glossary (helpful remodel plumbing terms)

Rough-in
The behind-the-wall/under-floor plumbing installation before drywall, tile, cabinets, or finishes are installed.
Vent (plumbing venting)
Piping that allows air into the drainage system so traps don’t siphon and drains flow properly.
Trap
The curved section of drain pipe (like a P-trap) that holds water to block sewer gases from entering your home.
Hot water jetting
A professional drain-cleaning method that uses high-pressure hot water to remove grease, scale, hair, and buildup from pipe walls.
Repiping (targeted or whole-home)
Replacing sections (or all) of supply piping to improve reliability, flow, and reduce leak risk—often considered when older materials are present.

Plumbing Remodels in Meridian, Idaho: A Homeowner’s Guide to Smart Upgrades, Clean Installs, and Fewer Surprises

April 24, 2026

A remodel looks “cosmetic” until the plumbing is involved

If you’re planning plumbing remodels in Meridian—updating a bathroom, moving a kitchen sink, adding a laundry room, or finishing a basement—your results depend heavily on what’s behind the walls. The right plumbing plan protects your home from leaks, odor, slow drains, and surprise rework, while also making day-to-day life easier (better water pressure, consistent hot water, quieter drains, and fixtures that actually fit your routines).

What “plumbing remodel” really means (and why it matters)

A plumbing remodel is any project where you add, remove, replace, or relocate plumbing components—supply lines (hot/cold water), drain/waste/vent piping, shutoff valves, traps, fixture connections, or appliances that connect to plumbing (dishwashers, fridge water lines, laundry, water heaters).

Even when you’re “just swapping fixtures,” there are common hidden variables: old shutoffs that won’t close, corroded galvanized lines, undersized drains, poor venting, worn wax rings, or a mainline that’s already struggling. A good remodel plan uncovers those before the tile, cabinets, and paint go in.

Meridian-specific reality check
Meridian’s municipal water is commonly in the “hard water” range—often around ~8–9 grains per gallon (GPG) depending on zone. Hard water can shorten fixture life, reduce water-heater efficiency, and cause scale buildup on showerheads and inside pipes. Planning for filtration/softening during a remodel can prevent “new bathroom, old-water problems.”

Common remodel projects (and the plumbing decisions that make or break them)

Remodel area Typical plumbing upgrades Common “surprise” issues
Bathroom remodel New shower valve, updated tub/shower, comfort-height toilet, new vanity sink and shutoffs Old angle stops, slow/poor venting, toilet flange height issues after flooring changes
Kitchen update New sink/faucet, disposal, dishwasher hookup, water line to fridge, improved shutoffs Grease buildup in drains, undersized/aging drain line, cabinet layout limiting trap/vent space
Laundry / mudroom Washer box, new valves, drain standpipe, pan + drain option Drain capacity problems, hose failures, poor access to shutoffs
Basement finish / add bath New drain tie-ins, vent routing, possible ejector system Concrete cutting scope, elevation challenges, venting path conflicts with framing
Whole-home upgrade Selective repipe, water heater upgrade, water softener/filtration Mixed pipe materials, pressure issues, scale and corrosion, aging shutoffs
A helpful way to avoid delays is to decide early: are you keeping fixtures in the same locations (simpler) or moving plumbing (more design freedom, but more work behind the scenes)?

A practical step-by-step plan for a smoother plumbing remodel

1) Start with “function,” not fixtures

List what needs to work better: faster tub fill, steadier shower temperature, a quieter toilet, more counter space, a second sink, or better drainage. This helps the plumber recommend valve types, line sizing considerations, and layout options before you fall in love with a fixture that doesn’t suit your home’s plumbing reality.

2) Confirm shutoff strategy and access

Remodels are the best time to replace aging angle stops and add isolation valves where it makes sense (kitchen, laundry, bathrooms). When a future leak happens, the difference between “shut off one fixture” and “shut off the whole house” is huge—especially with kids at home or a busy schedule.

3) Don’t ignore drain performance

Many homeowners focus on the supply side, but slow drains and recurring clogs are often the bigger nuisance. If you’re remodeling a kitchen or replacing a main bathroom, it’s smart to evaluate the drain line condition. In some cases, professional drain cleaning (including hot water jetting for grease/scale) restores flow and reduces backups—before new cabinets and flooring go in.

Where this matters most
Kitchen lines (grease), laundry lines (lint/soap), and older mainlines (scale or root intrusion) are common trouble spots. Clearing the line first can prevent “brand-new remodel, brand-new backup.”

4) Plan for hard water (especially with new fixtures)

If your home sees spotting on glass, scale on showerheads, or frequent water-heater maintenance, ask about a water softener or treatment system as part of the remodel scope. You’ll protect your investment—faucets, valves, and appliances last longer and stay cleaner with less scrubbing.

If you’re on municipal water in Meridian, you can also compare your water’s hardness by zone using the city’s published water quality reporting—then size equipment more accurately.

5) Decide if a partial repipe belongs in the remodel

If walls are already open, it can be cost-effective to replace problematic sections of supply or drain piping—especially if you’ve had recurring leaks, pinhole issues, or inconsistent pressure. This is less disruptive during a remodel than as a standalone repair later.

6) Confirm water heater capacity before upgrading showers and tubs

A bigger rain shower, dual showerheads, or a deep soaking tub can change your hot water demand. Before fixture selection is final, confirm your water heater can keep up (or plan an upgrade). It’s much easier to right-size hot water during a remodel than to chase lukewarm showers afterward.

7) Keep fixture installation “clean” (and warrantable)

Clean installs matter: secure mounting, correct sealing, correct connections, tested shutoffs, and careful trim-out. When fixtures are installed properly, you reduce leaks, wobble, poor drainage, and premature failures—plus you keep the space looking finished.

Quick “Did you know?” plumbing remodel facts

Hard water can quietly cost you

Fixtures may look “new,” but scale buildup can reduce flow and affect valve performance. Treatment is often easiest to add when you’re already renovating.

Kitchen drains clog differently than bathroom drains

Kitchens often struggle with grease and food sludge. Bathrooms often clog from hair/soap. The best cleaning approach can vary by line and material.

A remodel is the best time to improve “serviceability”

Adding access panels, replacing old shutoffs, and labeling valves saves time and stress later.

Local angle: remodeling in Meridian and the Treasure Valley

Meridian homeowners often juggle busy schedules, growing households, and homes built across many eras—meaning you may encounter a mix of pipe materials and “updates done over time.” That’s why remodel plumbing should be approached as a system: supply, drain, venting, and water quality working together.

If your project includes moving plumbing locations, adding a bathroom, changing a shower/tub layout, or tying into main drain lines, it’s smart to talk through permitting/inspection expectations early so your timeline stays realistic. Your plumber can coordinate the right sequence so walls aren’t closed up before plumbing is verified.

A note about emergencies during remodels
Remodel work can stir up dormant issues (old shutoffs, brittle lines, stressed fittings). If a leak or backup hits mid-project, getting it handled quickly helps protect new finishes and keeps contractors on schedule.

Ready to plan a plumbing remodel that stays on schedule?

Cloverdale Plumbing has served the Treasure Valley since 1953. If you’re remodeling in Meridian, we’ll help you map the plumbing scope, prevent avoidable surprises, and install fixtures and piping with the long game in mind.

FAQ: Plumbing remodels in Meridian, ID

Do I need a plumber if I’m only replacing a faucet or toilet?
For simple like-for-like swaps, some homeowners handle it themselves. That said, older shutoff valves, hidden corrosion, and flange/seal issues can turn a “quick swap” into a leak. If you want it installed cleanly with proper testing—and no guessing—having a licensed plumber is the safer route.
What’s the biggest cause of remodel delays?
Hidden conditions: old shutoffs that fail, drains that won’t flow, or piping that needs repair once walls are open. A pre-remodel assessment and a clear plan for “if we find X” helps keep decisions fast and schedules intact.
Is hot water jetting worth it during a kitchen remodel?
If the kitchen line has recurring grease-related clogs or slow drainage, jetting can be a strong option because it cleans pipe walls more thoroughly than a basic “punch a hole through” approach. The best method depends on pipe type, line condition, and what’s causing the blockage.
Should I upgrade my water heater if I’m upgrading my shower?
Not always—but it’s worth checking. Higher-flow fixtures and larger tubs can increase demand. If your current water heater is already near the end of its service life or you’ve noticed inconsistent hot water, remodeling is a convenient time to right-size or replace it.
Does Meridian have hard water?
Many Meridian service zones report hardness around the upper “moderately hard” to “hard” range, commonly near ~8–9 GPG depending on area. If you’re unsure, a simple test (or reviewing your zone’s water report) can confirm whether a softener or filtration would benefit your home.
Can you help with plumbing for a full remodel or addition?
Yes. Cloverdale Plumbing supports remodel and new construction plumbing for residential and commercial spaces—everything from fixture installs to drain work, repiping, water heaters, and water treatment.

Glossary (helpful remodel terms)

Angle stop (shutoff valve)
A small valve under sinks/toilets that shuts off water to a single fixture.
Trap
The curved section of drain pipe that holds water to block sewer gases from entering the home.
Venting
The system that allows air into drains so wastewater flows smoothly and traps keep their water seal.
Hot water jetting (hydro jetting)
A professional drain-cleaning method that uses high-pressure water to clear buildup like grease, scale, and debris from the inside of pipes.
Hardness (GPG)
A measurement of dissolved minerals (mainly calcium and magnesium). Higher numbers mean harder water and more potential for scale.