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Sump Pumps
Availability
Type
Voltage
Price
$0
$908.80
5050CVSP DuraMAC Sump Pump 1/2 HP 120V Cast Iron
A.Y. McDonald
5050CVSP DuraMAC Sump Pump 1/2 HP 120V Cast Iron
- Price
- From $399.26
5033CVSP DuraMAC Sump Pump 1/3 HP 120V Cast Iron
A.Y. McDonald
5033CVSP DuraMAC Sump Pump 1/3 HP 120V Cast Iron
- Price
- From $334.67
5030CVSP DuraMAC Sump Pump 3/10 HP 120V Cast Iron
A.Y. McDonald
5030CVSP DuraMAC Sump Pump 3/10 HP 120V Cast Iron
- Price
- From $289.76
5025PTSPCWB DuraMAC Pump Basin Package 1/4 HP 120V Thermoplastic
A.Y. McDonald
5025PTSPCWB DuraMAC Pump Basin Package 1/4 HP 120V Thermoplastic
- Price
- $509.39
5030CVSPCSK DuraMAC Crawl Space 3/10 HP 120V Cast Iron
A.Y. McDonald
5030CVSPCSK DuraMAC Crawl Space 3/10 HP 120V Cast Iron
- Price
- $743.78
5030CVSPK DuraMAC Sink/Drain System 3/10 HP 120V Cast Iron
A.Y. McDonald
5030CVSPK DuraMAC Sink/Drain System 3/10 HP 120V Cast Iron
- Price
- $580.13
5033CVSPEZ DuraMAC EZ Sump Kit 1/3 HP 120V Cast Iron
A.Y. McDonald
5033CVSPEZ DuraMAC EZ Sump Kit 1/3 HP 120V Cast Iron
- Price
- $395.57
5050CVPD DuraMAC Pedestal Pump 1/2 HP Cast Iron
A.Y. McDonald
5050CVPD DuraMAC Pedestal Pump 1/2 HP Cast Iron
- Price
- $399.26
5033PVPD DuraMAC Pedestal Pump 1/3 HP Thermoplastic
A.Y. McDonald
5033PVPD DuraMAC Pedestal Pump 1/3 HP Thermoplastic
- Price
- $260.84
5020PUUP DuraMAC Utility Pump 1/5 HP 120V Thermoplastic
A.Y. McDonald
5020PUUP DuraMAC Utility Pump 1/5 HP 120V Thermoplastic
- Price
- $174.10
5000PVSPBU DuraMAC Battery Back-Up 12V DC Thermoplastic Sump Pump
A.Y. McDonald
5000PVSPBU DuraMAC Battery Back-Up 12V DC Thermoplastic Sump Pump
- Price
- $609.05
Radon Ready Sump Pump | Emergency Back-Up Water Powered
A.Y. McDonald
Radon Ready Sump Pump | Emergency Back-Up Water Powered
- Price
- From $612.80
Sump Pumps
Description
Authorized Baker · Goulds · Liberty Quote · Authorized Xylem Dealer
Sump Pumps
Basement &
Crawl Space Protection
Protect your basement, crawl space, and property from water damage. The complete Baker DuraMAC sump pump lineup — thermoplastic and cast iron, ¼ HP through ½ HP, with vertical, tethered, and no-switch configurations. Plus pre-built packages, battery backups, and crawl space kits for drop-in installation.
¼ – ½ HP
Power Range
30–70 GPM
Flow Range
25 ft
Vertical Lift
Same Day
Houston Stock
Brands We Carry
Sump Pumps from Trusted Manufacturers
Baker DuraMAC is our flagship sump pump line — full coverage from budget thermoplastic through heavy-duty cast iron, plus pre-built packages and battery backups. Xylem (Goulds Water Technology) commercial sump pumps available by quote.
Find Your Match
Pick Your Application
Sump pumps are sized to water table activity, basin volume, and discharge head. Match your situation below to narrow the right family — then call us at 281.664.8000 for a free pump and basin sizing.
🏠 Standard Basement
Typical residential basement with seasonal water table activity. ¼ HP thermoplastic adequate for most. Add backup if power outages are a concern.
→ Baker 5025PTSP / 5025PVSP
🌧️ High Water Table / Wet Climate
Heavy seasonal flooding, high groundwater, properties below grade. Cast iron pump with continuous-duty motor required.
→ Baker 5030CVSP / 5030CTSP / 5050CVSP
🏚️ Crawl Space
Low-clearance crawl space installation with limited basin space. Specialized low-profile package required.
→ Baker 5030CVSPCSK Crawl Space Kit
⚡ Power Outage Protection
Storm-prone areas, properties where outage = flooded basement. Battery backup runs when grid power fails.
→ Baker 5000PVSPBU Battery Backup
🚀 Heavy Duty / Maximum Pump-Out
Severe flooding risk, large basement, high inflow rate. ½ HP pumps move 70 GPM at 25 ft of lift.
→ Baker 5050CVSP / 5050CUSP25
🛠️ New Construction / Drop-In
Want everything in one box? Pre-assembled package = basin + pump + check valve + lid ready to install.
→ Baker 5030CVSPK / 5033CVSPEZ Package
Education
¼ HP vs ⅓ HP vs ½ HP — Which Do You Need?
More HP isn't always better. Match the pump to expected water inflow rate — an oversized sump pump cycles too rapidly and burns out faster than a properly-matched one.
¼ HP
Thermoplastic · 30 GPM · Standard
Budget Friendly
▸
Best for: Standard residential basement, seasonal use, mild water table activity
▸
Flow: 30 GPM at low head, drops to ~10 GPM at 25 ft lift
▸
Construction: Thermoplastic body, split capacitor motor
▸
Discharge: 1¼" or 1½" NPT
▸
Baker models: 5025PTSP (tethered) · 5025PVSP (vertical)
⅓ HP
Cast Iron · 50 GPM · Most Popular
Best Seller
▸
Best for: Most residential applications, the "sweet spot" for everyday sump protection
▸
Flow: 50 GPM at low head, ~20 GPM at 25 ft lift
▸
Construction: Cast iron body, continuous-duty motor, clog-resistant impeller
▸
Discharge: 1½" NPT
▸
Baker models: 5030CVSP / 5033CVSP / 5033CVSPEZ
½ HP
Cast Iron · 70 GPM · Heavy Duty
Maximum Power
▸
Best for: High water table, large basements, severe flooding risk, dual-pump systems
▸
Flow: 70 GPM at low head, ~30 GPM at 25 ft lift
▸
Construction: Cast iron, thermally-protected split capacitor motor
▸
Discharge: 1½" NPT
▸
Baker models: 5050CVSP · 5050CUSP25 (25 ft cord)
⚠ Don't Oversize Your Sump Pump
A common mistake: "I'll buy a ½ HP pump just to be safe." The problem: an oversized pump empties the basin faster than water flows in, then short-cycles repeatedly. Each on/off cycle stresses the motor — frequent cycling is the #1 cause of premature sump pump failure. Size the pump to your actual water inflow rate (measure how fast the basin fills with the pump off), and match HP to that flow with reasonable margin. Most homes are correctly served by ⅓ HP cast iron.
Best Seller · Complete Coverage
Baker DuraMAC Sump Pump Lineup
DuraMAC covers every residential sump application from a budget thermoplastic ¼ HP to a heavy-duty cast iron ½ HP — plus pre-assembled packages and battery backup. All ship same-day from Houston with full Baker warranty.
DuraMAC Sump Lineup at a Glance
| Model | HP | Construction | Switch | Max Flow | Max Lift |
|---|---|---|---|---|---|
| 5025PTSP | ¼ HP | Thermoplastic | Tethered | 30 GPM | 25 ft |
| 5025PVSP | ¼ HP | Thermoplastic | Vertical | 30 GPM | 25 ft |
| 5030CVSP | 3/10 HP | Cast Iron | Vertical | 50 GPM | 25 ft |
| 5030CTSP | 3/10 HP | Cast Iron | Tethered | 50 GPM | 25 ft |
| 5030CUSP / 25 | 3/10 HP | Cast Iron | None (utility) | 50 GPM | 25 ft |
| 5033CVSP | ⅓ HP | Cast Iron | Vertical | 55 GPM | 25 ft |
| 5033CVSPEZ | ⅓ HP | Cast Iron + EZ Install | Vertical | 55 GPM | 25 ft |
| 5050CVSP | ½ HP | Cast Iron | Vertical | 70 GPM | 25 ft |
| 5050CUSP25 | ½ HP | Cast Iron · 25' cord | None (utility) | 70 GPM | 25 ft |
All DuraMAC sump pumps: 120V 60Hz single-phase, split capacitor motors with thermal protection. Cord lengths 10' standard, 25' optional on most models.
Thermoplastic Series — 5025PTSP & 5025PVSP
Budget-friendly residential protection. Thermoplastic body resists corrosion in standard sump conditions, ¼ HP split capacitor motor with thermal protection, large 1¼" or 1½" discharge for high-capacity pumping, clog-resistant impeller, and lifts water up to 25 ft of vertical height.
Flow: 30 GPMLift: 25 ftBody: ThermoplasticCord: 10' standardMotor: ¼ HP split cap
Tethered vs Vertical Float — Which Switch Type?
Tethered (PTSP): Float swings on a cord. Wider on/off range, fewer cycles. Best for larger basins (≥18" diameter) where the float has room to swing freely. Vertical (PVSP): Float rides up/down a vertical rod. Narrower on/off range, fits tight basins. Best for narrow basins where a tethered float would catch on basin wall. When in doubt: tethered for older oversized basins, vertical for modern 18" basins or tight installs.
5025PTSP / 5025PVSP Specifications
HP¼ HP
Voltage120V 60Hz 1Ø
Amps3.8
Discharge1¼" or 1½" NPT
Solids Handling⅛"
MotorSplit capacitor · thermal protected
DutyContinuous ✓
Cord (standard)10' (25' optional)
Cast Iron Series — 5030 / 5033 (3/10 HP & ⅓ HP)
Cast iron body, continuous-duty motor, clog-resistant impeller, and 1½" discharge — the workhorse of residential sump protection. Available in three switch configurations: vertical (CVSP), tethered (CTSP), and no-switch utility (CUSP) for use with external float controls or alarm systems. The 5030CUSP25 ships with 25' cord for deeper basins or longer install runs.
Heavy Duty Series — 5050C (½ HP, 70 GPM)
When seasonal flooding, high water tables, or large basement protection demand maximum pump-out, the 5050CVSP and 5050CUSP25 deliver. ½ HP thermally-protected split capacitor motor, cast iron construction, up to 70 GPM, 25 ft of vertical lift. The 5050CUSP25 ships with the longer 25' cord for installations where the panel is far from the basin.
HP: ½ HPFlow: 70 GPMLift: 25 ftBody: Cast IronSwitch: Vertical or None
When Heavy-Duty is the Right Call
Specify ½ HP when: (1) sump pumps before this one have failed within 3–5 years; (2) the basin fills faster than a ⅓ HP can keep up; (3) you're protecting finished basement square footage where a flood event is catastrophic; (4) this is the primary pump in a primary-and-backup duplex setup; (5) your area has high water tables, springs, or hillside seepage. For typical seasonal residential use, ⅓ HP is plenty.
Drop-In Ready · Pre-Assembled
Pre-Built Sump Pump Systems
When you'd rather not assemble a system from parts, we stock complete pre-built packages. Basin + pump + check valve + lid in one purchase order — saves hours of install labor and eliminates parts-matching guesswork.
5030CVSPK — Standard Package
Complete drop-in: 18" sump basin + 5030CVSP cast iron ⅓ HP pump + check valve + lid. The fastest path to a working sump system. Ideal for new construction or pump-only failure where the basin is also being upgraded.
→ New construction / replacement
5033CVSPEZ — EZ Install Kit
⅓ HP cast iron with EZ install hardware. Streamlined for retrofit on existing basins. Includes pre-routed check valve and easier float adjustment.
→ Retrofit / replacement
5030CVSPCSK — Crawl Space System
Specialized low-profile package for crawl space installations. Smaller basin, low-clearance pump, integrated lid. The only practical option when ceiling clearance is limited.
→ Crawl space install
5025PTSPCWB — Clear Water Basin
¼ HP thermoplastic with tethered switch + clear water basin (clear-bodied for visibility into sump conditions). Ideal for laundry tray pumps, dehumidifier discharge, condensate handling.
→ Laundry / condensate
Power Outage Protection
5000PVSPBU — Battery Backup Sump Pump
Storm power outages and sump failures arrive together. The Baker 5000PVSPBU keeps your basement dry when grid power is out — a separate 12V DC battery-powered pump installed alongside (not replacing) your primary AC sump pump.
How a Battery Backup System Works
①
Primary AC Sump Runs Normally
Your main 120V sump (e.g. 5033CVSP) handles routine operation off grid power.
②
Backup Pump Sits in Same Basin
5000PVSPBU 12V DC pump installs alongside primary, with float switch above primary's level.
③
Charger Maintains Battery Trickle
When AC power is on, charger keeps deep-cycle marine battery fully charged 24/7.
④
Power Goes Out → Backup Activates
Primary stops. Water rises until the backup's higher float trips. 12V pump runs off battery, alarm sounds.
⑤
Typical Runtime: 6–24 Hours
Depends on battery capacity and pump cycle frequency. Most outages are short — system buys you time.
⚠ The Battery is the System's Weak Link
Battery backup systems fail in two ways: (1) dead battery — old batteries lose capacity. Replace the deep-cycle marine battery every 3–5 years even if it seems fine. Test annually with a load test. (2) Charger failure — charger silently dies, battery slowly discharges, system fails when you need it. Most modern chargers include LED status indicators; check monthly. Test your full system at least twice a year by unplugging the AC primary and watching the backup activate.
Battery Backup vs Water-Powered Backup
Some installers prefer water-powered backups (use city water pressure to drive a venturi pump, no battery needed). Pros: no battery to maintain. Cons: requires high city water pressure (60+ PSI), extremely inefficient (uses 1 gal of city water for every 2 gallons pumped out), often violates plumbing code in many jurisdictions, doesn't work on well systems. For most residential applications, battery backup is the more reliable and code-compliant choice.
Available · Quote Only · Authorized Xylem Dealer
Goulds Water Technology — Commercial & Industrial Sump
When the application demands commercial-duty cast iron, larger basins, or industrial sump capability beyond the residential Baker DuraMAC line, we bring in Xylem Goulds Water Technology. These pumps are NOT currently listed online — but we'll quote any model in the catalog and ship factory-direct or from regional Xylem stock.
Goulds WS Series — Cast Iron Submersible
Commercial cast iron submersible pumps for sump, dewatering, and effluent service. Up to 5 HP. Heavy-duty mechanical seals, oil-filled motor, abrasion-resistant impeller.
→ Commercial sump · dewatering
Goulds GTGSP — Heavy-Duty Sump
Industrial-grade sump pumps for manufacturing, food processing, and high-cycle applications. ⅓ HP through 1½ HP, all cast iron, 2" discharge available.
→ Industrial · high-cycle
Goulds 3SD Submersible Sump
Compact cast iron sump pump with stainless steel mechanical seal. Built for water removal, light effluent, and basement sump service.
→ Premium residential
Liberty Pumps (Quote)
We can also quote Liberty Pumps sump and effluent product lines for spec replacement on existing installations or specific contractor preferences.
→ Spec replacement
When to Quote Goulds vs Stock Baker
Choose Baker DuraMAC for residential applications, replacement on existing Baker installations, or where same-day shipping matters. Choose Goulds when: (1) spec calls for "Goulds or equal"; (2) commercial/industrial duty cycles (more than 50 cycles/day); (3) 2" or larger discharge required; (4) larger HP (above ½ HP) needed for commercial flow; (5) hospital/data center/manufacturing where downtime is unacceptable. Email sales@watermainsupply.com with your spec and we quote same business day.
Technical Reference
Sump Pump Sizing Guide
Three numbers you need: water inflow rate (GPH or GPM), required vertical lift, and discharge pipe length. Get these right and the pump selection is straightforward.
Step 1 — Measure Water Inflow Rate
The 1-Minute Test: Unplug the existing sump pump (or empty basin manually). Watch how fast the basin fills. Multiply by 60 to get inflow per hour.
| Inflow Rate | Severity | Recommended Pump |
|---|---|---|
| < 5 GPM (300 GPH) | Light / seasonal | ¼ HP thermoplastic (5025PTSP/PVSP) |
| 5–15 GPM (300–900 GPH) | Moderate / typical residential | ⅓ HP cast iron (5030CVSP / 5033CVSP) |
| 15–30 GPM (900–1800 GPH) | Heavy / wet climate | ½ HP cast iron (5050CVSP) |
| > 30 GPM (1800+ GPH) | Severe / commercial | Goulds WS series quote · or duplex setup |
| If the basin fills faster than your pump can empty it during peak inflow, the pump can't keep up — water rises. Always size with 30-50% margin above measured peak inflow. | ||
Step 2 — Calculate Total Lift & Discharge Friction
Total Dynamic Head = Vertical Lift + Friction Losses + Discharge Backpressure
Vertical lift = pump bottom to discharge highest pointFriction ≈ 1 ft/100 ft for 1½" Sch 40 PVC90° elbow ≈ 5 ft equivalent lengthCheck valve ≈ 5 ft equivalent lengthSub-grade discharge → daylight ≈ 8–12 ft typical
Step 3 — Match Switch Type to Basin
Tethered Float (T)
Float swings on cord, wider on/off range, fewer cycles. Best for basins ≥ 18" diameter with room to swing freely.
→ Larger basins
Vertical Float (V)
Float rides up/down a vertical rod, narrower range, fits tight spaces. Best for 18" basins or where wall clearance is limited.
→ Standard basins
No Switch / Utility (U)
For use with external float controls, alarm systems, or duplex pump alternation. Common in commercial and dual-pump installs.
→ External controls
Service & Replacement
Sump Pump Parts & Accessories
When a sump pump fails during a storm, you want replacement parts the same day — not next week. We stock the full DuraMAC accessory and repair parts catalog.
Replacement Float Switches
Tethered float switches, vertical rod switches, and wide-angle floats. Most failed sump pumps need a switch replacement — not a new pump.
→ Most common failure
Check Valves
Spring-loaded silent check valves and swing-type check valves in 1¼" and 1½". Failed check valves cause short-cycling and basin re-flooding.
→ Anti-cycling protection
Plastic Mounting Blocks
DuraMAC pump mounting blocks for raising the pump off the basin floor. Critical for 1¼" solids handling and reduced sediment intake.
→ Floor clearance
Basin Extensions & Lids
Basin extensions to add depth, sealed lids for radon control, vented lids for standard service. Match basin diameter (18"/24"/30").
→ Basin retrofit
Battery Backup Components
Replacement deep-cycle batteries, charger units, alarm modules, and complete backup pump assemblies for the 5000PVSPBU system.
→ Backup system
Discharge & Plumbing
Discharge pipe adapters, 1½" PVC fittings, hose barb adapters for utility pump applications, and freeze-protection discharge fittings.
→ Install hardware
Technical FAQ
Common Questions
How do I know what HP sump pump I need?
Measure your basin inflow rate: time how fast the basin fills with the pump unplugged. < 5 GPM = ¼ HP thermoplastic. 5–15 GPM (typical residential) = ⅓ HP cast iron. 15–30 GPM (wet climate or large basement) = ½ HP cast iron. Add 30-50% margin above measured peak. Don't oversize — it causes short-cycling and premature failure.
What's the difference between thermoplastic and cast iron sump pumps?
Thermoplastic (5025 series) is lighter, less expensive, and resists corrosion in clean water — ideal for budget residential sump applications and clear water service. Cast iron (5030/5033/5050 series) is heavier, dissipates heat better for continuous duty, and is more durable in mineralized or sandy water. For continuous-duty pumping or any sump that runs more than a few times per hour during peak season, choose cast iron.
Should I get a tethered or vertical float switch?
Tethered (PTSP/CTSP): wider on/off range, fewer cycles, requires basin ≥ 18" diameter with clearance for the float to swing freely. Vertical (PVSP/CVSP): narrower on/off range, more cycles per gallon, fits tight basins where a tethered float would catch on the wall. For most modern 18" basins, vertical is the default. For older 24" or larger basins, tethered runs cooler with fewer cycles.
My sump pump runs constantly. What's wrong?
Three common causes: (1) Failed check valve — water pumps up, falls back into basin, pump runs again. Replace the check valve. (2) Stuck float switch — float jammed in "on" position. Free the float or replace the switch. (3) Inflow rate exceeds pump capacity — pump can't catch up. Check basin inflow rate; if it exceeds your pump's GPM at your lift height, you need a larger pump or a duplex system.
My sump pump short-cycles (turns on/off rapidly). What's wrong?
Three causes: (1) Float switch differential too narrow — switch turns on/off within a 2" water range. Adjust tethered float for wider swing or replace with adjustable vertical switch. (2) Pump is oversized — empties basin too fast, fills again, repeat. Move to smaller HP. (3) Failed check valve — water bleeds back into basin between cycles. Replace check valve.
Do I need a battery backup sump pump?
If your area has frequent power outages OR if a single failed sump cycle would flood a finished basement with significant property loss, yes. Battery backup is essentially insurance against power-out flooding — pumps are cheap relative to flood damage. The 5000PVSPBU installs alongside (not replacing) your primary AC sump and runs off a 12V deep-cycle marine battery for 6–24 hours during outages.
How long does a sump pump last?
A properly-sized cast iron sump pump in residential service typically lasts 7–10 years. Thermoplastic pumps in light service last 5–7 years. Premature failures (1–3 years) almost always trace to oversizing (causing short-cycling), mineral-laden water (eats the impeller), or float switch failure (catches on basin wall). Replace the float switch at first sign of erratic behavior — it's the cheapest service item and prevents premature pump failure.
Can I install a sump pump myself?
Replacing an existing sump pump in an existing basin is a straightforward DIY project — disconnect old pump, drop in new pump, connect discharge pipe, plug in. New installations involving cutting a basin into the slab or installing a discharge run through the foundation are much more involved — those typically require a plumber or basement specialist. Most of our customers handle replacement themselves; we ship next-day to anywhere in the US.
What's a crawl space sump kit?
The 5030CVSPCSK is a low-profile sump system designed for crawl space installations where ceiling clearance is limited. Includes a smaller (typically 12-15" diameter) basin with a low-profile pump and integrated lid. Critical when you can't fit a standard 18" basin under crawl space ceiling height. Don't try to retrofit a standard sump into a crawl space — buy the right kit for the application.
Do you ship same-day on sump pumps?
Yes — stocked Baker DuraMAC sump pumps ship same business day if ordered before 2 PM CT. We hold inventory on the most common configurations (5025PTSP, 5030CVSP, 5033CVSPEZ, 5050CVSP) plus the 5000PVSPBU battery backup. Specialty configurations and packages typically ship within 1–2 business days. Goulds Water Technology models ship factory-direct in 3–7 business days.
What's the warranty on Baker sump pumps?
Baker provides a 1-year limited warranty on residential sump pumps with extended warranty options available. We register the warranty with Baker at the time of shipment so you're covered without paperwork. Premature failures should be reported through us — we coordinate the warranty claim and cross-ship a replacement when necessary to minimize your downtime during a flood event.
Are you an authorized Baker dealer?
Yes — Watermain Supply (DBA of E4 Industrial LLC) is an authorized Baker Water Systems dealer, plus authorized for A.Y. McDonald, Davey, and Xylem (Goulds Water Technology & Lowara). All products ship factory-direct or from Houston stock with full manufacturer warranty.
Need a Sump Pump or System Sized?
Free sizing with every quote. Same-day shipping on Baker DuraMAC sump pumps from Houston stock. Storm coming — order today.
sales@watermainsupply.com
281.664.8000Free Sizing & Technical Support
sales@watermainsupply.comSame-Day Quote Response
Authorized DealerBaker · A.Y. McDonald · Davey · Xylem
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