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Zoeller Pump Company · 98-0001

M98 Flow-Mate

A high-flow automatic cast-iron primary that retains Zoeller's integral vertical mechanical switch
Market statusCurrent high-flow 1/2 HP cast-iron primary sump pumpChecked Aug 18
Reference price$349.50 current U.S. street referenceSupplyHouse exact 98-0001 in-stock reference
Product cyclecurrentRelease history under review
EvidenceWell supported9 publishers · 6 independent
Next full checkAug 25, 2026Price checks run sooner
01

Ready to buy

Confirm the exact pump, package and installation

The retained reference is $349.50 current U.S. street reference. Confirm 98-0001 cord and switch, available start power, basin cycle volume and the installed discharge rather than buying from horsepower alone. Commission every pump, float, check valve, alarm and notification path before relying on the installation.

02

Current market

The facts that change the ownership choice

Each line carries its own check date because price, software, specifications, and product cycle do not age at the same speed.

QuestionCurrent answerFreshnessBasis

Current price

$349.50 current U.S. street reference

Confirm 98-0001 cord and switch, available start power, basin cycle volume and the installed discharge rather than buying from horsepower alone. Confirm exact current stock, seller authorization, tax, delivery, battery, valves, pipe, alarm, labor, permits and return terms before paying.

Refresh due soonDirect source1 evidence item

System branch

Higher-flow primary for greater head or inflow
Checked 6 days agoOur synthesis2 evidence items

Complete-purchase boundary

The M98's higher draw and start current require circuit and generator checks, and a larger pump can short-cycle in a small basin without fixing a restrictive discharge
Checked 6 days agoOur synthesis4 evidence items

Head and flow boundary

Zoeller publishes roughly 72 GPM at 5 feet, 61 GPM at 10 feet, 45 GPM at 15 feet and 25 GPM at 20 feet with shutoff near 23 feet; pipe friction and check-valve loss must be added to static lift
Checked 6 days agoOur synthesis2 evidence items

Basin fit and solids boundary

The automatic float needs its stated operating envelope and the vortex impeller passes 1/2-inch spherical solids in clear groundwater; the label's effluent capability does not admit sewage, grinder duty, wipes or construction debris to this desk
Checked 6 days agoOur synthesis3 evidence items

Switch, check valve and discharge

The integral vertical mechanical float operates near 9-1/2 inches on and 3 inches off; the 1-1/2-inch NPT discharge needs a suitably sized full-flow check valve, union, relief provision and freeze-safe termination
Checked 6 days agoOur synthesis3 evidence items

Power, battery and charger

The 115 V motor is rated about 9.4 A with materially higher starting current; verify branch circuit and any generator or inverter by exact starting requirements, because no battery or charger is included
Checked 6 days agoOur synthesis3 evidence items

Runtime, alarm and connection

M98 has no alarm, cloud monitoring or outage runtime; the LED plug only reports local AC presence
Checked 6 days agoOur synthesis3 evidence items

Maintenance, access and service

Commission with water at the real head, observe several full cycles, inspect the float guard, check valve, piping and discharge and keep the heavy pump safely removable with power isolated
Checked 6 days agoOur synthesis4 evidence items

Warranty and failure modes

The exact model carries three-year limited coverage; switch wear, rapid cycling, power quality, blockage, frozen outlet, recirculation, overwhelmed inflow and a shared discharge failure remain live risks
Checked 6 days agoOur synthesis3 evidence items

Shock, flood, mold, sewage and outcome boundary

This system cannot make energized or contaminated water safe, prevent groundwater or sewer backflow, remove mold, authorize confined-space entry, satisfy every electrical or plumbing code, permit or insurance requirement or guarantee flood prevention, runtime, notification, reliability, property protection, coverage or a claim outcome.
Checked 6 days agoOur synthesis5 evidence items

Current verdict

The high-flow Zoeller primary

M98 is the defended step up where a measured curve shows that the M53 class lacks margin and the basin and electrical branch can support the additional flow and cycling.

Checked 6 days agoOur synthesis12 evidence items
03

Other paths

The alternatives change what the M98 Flow-Mate is worth

These are not generic competitors. Each one represents a different way to buy into the same market.

01lower upfront

Zoeller Pump Company

M63 Premium

$315.75 current U.S. street reference
Best fit
Premium moderate-head primary
Tradeoff
M63 improves materials and warranty over M53 but does not add flow, backup power, remote monitoring or a check valve
Open the source
02ownership

Wayne Water Systems

CDU980E

$211.78 current U.S. retail reference
Best fit
High-head compact primary
Tradeoff
CDU980E's large curve can worsen short cycling or expose a restrictive discharge, and the pump still has no backup, alarm or included check valve
Open the source
04

What changed

The product has a history

Older observations stay in the ledger when the current view changes. That lets a buyer tell the difference between an old complaint, an active issue, and a problem that was corrected.

  1. notable

    Current exact pump, package, price and failure boundary retained

    M98 Flow-Mate was checked against exact manufacturer identity and manual, current U.S. price, hydraulic curve, basin and switch fit, discharge and check-valve path, power or battery system, alarm and connectivity, service, independent evidence and bounded owner or installer reports.

Price record

The price history starts here

Each amount stays tied to its source and capture date. Conflicting prices remain visible until the seller resolves them.

  1. $349.50 current U.S. street reference

    Current reference priceA structured timeline will begin with the next source capture

05

Owner experience

What repeats after the purchase

Owner and installer discussion returns to heavy-inflow cycling, float-switch behavior, starting power, noise and replacement access rather than a universal reliability or flood result.

These are self-reported experiences across different basins, inflows, heads, pipe and check-valve layouts, circuits, batteries, chargers, alarms, networks, maintenance, installation quality, weather and service ages. They identify commissioning and service checks and do not establish standardized flow, runtime, notification delivery, reliability, failure rate, flood prevention, mold prevention, safety, code approval, insurability or claim outcomes.
SignalWhat owners reportOur readEvidence

heavy-inflow cycling, float-switch behavior, starting power, noise and replacement access

Exact-model reviews discuss rapid storm cycling, float-switch problems, sound, start current and plumber recommendations. They identify checks but do not establish longevity or a failure rate.

Calculate total dynamic head and measured inflow, confirm circuit start margin and prove that the basin produces stable cycles before relying on the higher curve.

1 evidence record
06

Sources

Why we believe the current view

The page separates what a source states directly from what we conclude across sources.

01
M98 Flow-Mate exact manufacturer recordZoeller Pump Company · identity

Zoeller Pump Company identifies exact model 98-0001 as a high-flow automatic cast-iron primary that retains Zoeller's integral vertical mechanical switch.

Source type
manufacturer
Content hash
cb6cbf97aad2e7e5
Use
store excerpt
Open Zoeller Pump Company
02
M98 Flow-Mate exact current U.S. offerProfessional U.S. retailer · price

$349.50 current U.S. street reference was retained for exact model 98-0001. Confirm 98-0001 cord and switch, available start power, basin cycle volume and the installed discharge rather than buying from horsepower alone

Source type
retailer
Content hash
adeaa3e13047e3a0
Use
store snapshot
Open Professional U.S. retailer
03
M98 Flow-Mate exact manual and supportZoeller Pump Company · specification

Zoeller publishes roughly 72 GPM at 5 feet, 61 GPM at 10 feet, 45 GPM at 15 feet and 25 GPM at 20 feet with shutoff near 23 feet; pipe friction and check-valve loss must be added to static lift The automatic float needs its stated operating envelope and the vortex impeller passes 1/2-inch spherical solids in clear groundwater; the label's effluent capability does not admit sewage, grinder duty, wipes or construction debris to this desk The integral vertical mechanical float operates near 9-1/2 inches on and 3 inches off; the 1-1/2-inch NPT discharge needs a suitably sized full-flow check valve, union, relief provision and freeze-safe termination

Source type
support
Content hash
13d2fb20e9468bb6
Use
store excerpt
Open Zoeller Pump Company
04
M98 Flow-Mate power, monitoring and service boundaryZoeller Pump Company · specification

The 115 V motor is rated about 9.4 A with materially higher starting current; verify branch circuit and any generator or inverter by exact starting requirements, because no battery or charger is included M98 has no alarm, cloud monitoring or outage runtime; the LED plug only reports local AC presence Commission with water at the real head, observe several full cycles, inspect the float guard, check valve, piping and discharge and keep the heavy pump safely removable with power isolated The exact model carries three-year limited coverage; switch wear, rapid cycling, power quality, blockage, frozen outlet, recirculation, overwhelmed inflow and a shared discharge failure remain live risks

Source type
support
Content hash
8219de87434457ce
Use
store excerpt
Open Zoeller Pump Company
05
Mold, moisture and home cleanup boundaryU.S. Environmental Protection Agency · specification

EPA guidance centers moisture-source correction, prompt drying and appropriate remediation. A sump pump does not by itself stop leaks, dry materials or remediate mold.

Source type
editorial
Content hash
6c6e709376a3e687
Use
store excerpt
Open U.S. Environmental Protection Agency
06
Flood cleanup electrical and contamination hazardsU.S. Centers for Disease Control and Prevention · specification

Flood cleanup can involve electrical shock, sewage and chemical contamination, mold, unstable materials and injury hazards that require appropriate utilities, protective equipment and trained help.

Source type
editorial
Content hash
6e9efdb9c7e61047
Use
store excerpt
Open U.S. Centers for Disease Control and Prevention
07
Confined-space hazard frameworkU.S. Occupational Safety and Health Administration · specification

Pits and restricted spaces can contain hazardous atmospheres, engulfment or difficult rescue conditions. Entry requires an applicable assessment and controls rather than an assumption that a residential space is safe.

Source type
editorial
Content hash
ab8d29e3e9c650fc
Use
store excerpt
Open U.S. Occupational Safety and Health Administration
08
Flood insurance policy boundaryNational Flood Insurance Program · specification

Flood insurance coverage, exclusions, documentation and claim outcomes are policy- and event-specific. Equipment ownership or an alarm does not guarantee coverage, insurability or payment.

Source type
editorial
Content hash
80cd5f808af32009
Use
store excerpt
Open National Flood Insurance Program
09
Zoeller M98 current model reviewSump Pump Problem · specification

Independent exact-model coverage examines M98 capacity, switch and installation tradeoffs and does not replace the manufacturer's current curve or manual.

Source type
editorial
Content hash
6fb63722904de575
Use
store excerpt
Open Sump Pump Problem
10
Zoeller 98-0001 verified owner and installer reviewsSupplyHouse customers · consensus

Exact-model reviews discuss rapid storm cycling, float-switch problems, sound, start current and plumber recommendations. They identify checks but do not establish longevity or a failure rate.

Source type
community
Content hash
71e536d7fa0cb754
Use
store excerpt
Open SupplyHouse customers
11
M63 Premium defended comparison alternativeZoeller Pump Company · alternative

M63 Premium is the premium moderate-head primary alternative at $315.75 current U.S. street reference.

Source type
manufacturer
Content hash
c6f6a584098ac8cc
Use
store excerpt
Open Zoeller Pump Company
12
CDU980E defended comparison alternativeWayne Water Systems · alternative

CDU980E is the high-head compact primary alternative at $211.78 current U.S. retail reference.

Source type
manufacturer
Content hash
4521a87455f90d33
Use
store excerpt
Open Wayne Water Systems

Manufacturer identity, exact current U.S. price, current manual or support path, independent editorial, laboratory or professional-market evidence and bounded exact-model owner or installer evidence were checked on August 18, 2026. This desk covers complete current or actively supported residential basement and crawlspace primary sump pumps, battery-backup sump systems and integrated primary-plus-backup packages. It excludes sewage, effluent-tank, grinder and utility pumps; standalone batteries, chargers, alarms and power converters; water-powered backups; commercial lift stations; unsupported or obsolete models; marketplace-only products; and cosmetic bundles or package padding. Pump flow must be read on the exact curve at total dynamic head, including vertical rise and pipe, fitting and check-valve loss. Zero-head flow and horsepower do not size a system. Basin diameter, depth, inlet elevation, usable cycle volume, switch travel, solids boundary, discharge diameter, check valve, union, air-lock relief, exterior termination and freeze or backflow exposure are installation facts. Primary, backup and high-water switches must move freely and be tested independently. Battery chemistry, group size, amp-hours, age, temperature, charger, cable, voltage sag, duty cycle and head control useful backup time; no runtime claim is a site promise. Audible, dry-contact, Wi-Fi, app and cloud alerts have different hardware, power, account, network, service, privacy and delivery boundaries. Keep receptacles, controllers, chargers and batteries dry and above possible water, use direct grounded connections and required GFCI and branch protection, isolate power before contact and use qualified electrical and plumbing work plus required permits and inspections. Never enter a sump, basin, crawlspace or other possible confined space without the applicable competent-person assessment and controls. Floodwater may contain sewage, chemicals, sharp objects and energized equipment. Do not touch water or pumps where electrical or contamination hazards may exist; use emergency, utility, remediation and public-health guidance. A sump system does not stop groundwater, sewer backup, plumbing failure, mold, backflow or contaminated flooding and does not replace drainage, grading, waterproofing, sewer protection, mold remediation, flood cleanup or a site-specific professional design. No product, curve, test, review, alarm, battery, warranty or installation guarantees flood prevention, runtime, notification, reliability, service life, mold prevention, property protection, code approval, permit acceptance, insurability, coverage or an insurance claim outcome.

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