Furnace and AC · Aquastrong

Aquastrong CDS320 Condensate Pump

A Little Giant alternative with a longer warranty

Updated October 2026

Quick verdict

A strong value condensate pump.

Strength
Safety switch and five inlets.
Trade-off
Newer brand than Little Giant.
Right buyer
Furnaces, AC and dehumidifiers.
Max flow (maker)
1.41 GPM
Max head / lift (maker)
20 ft
Tank / reservoir
2 gallon
Alarm
Safety Switch
Voltage
115 V
Power source
ac
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Why it matters

Aquastrong rates the CDS320 at up to 85 GPH or a 20 ft vertical lift. A hall-effect level switch runs the pump, starting at 2.28 in and stopping at 1.26 in, so there's no mechanical float contact to wear.

The high-level safety switch has two signal leads to shut off the appliance before an overflow. Five 1 in inlets take several drain lines, the 1/2 gallon reservoir lifts off for cleaning, and Aquastrong covers it for two years.

Who it's for, and who should skip it

Good fit if

  • Furnace plus AC plus humidifier
  • Budget-conscious installs
  • 20 ft lifts

Look elsewhere if

  • Sump pits or basement flooding
  • Lifts above the maker's maximum
  • Owners who won't clean it twice a year

Pros and cons

Pros

  • Five inlets
  • Safety switch
  • Two-year warranty

Cons

  • Short 3.3 ft cord
  • Must be mounted level
  • Clean every six months

Limitations to weigh

  • Wiring the safety switch to your furnace or air handler needs basic electrical knowledge; hire a technician if unsure.
  • Clean the tank, float and check valve every six months or so; algae and slime cause most condensate pump failures.

Specifications

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

MaterialPlasticRetailer
Dimensions (seller)11.3"L x 5"W x 4.9"HRetailer
Max flow (maker)1.41 GPMRetailer
Max head / lift (maker)20 ftRetailer
Voltage115 VRetailer
Compatible devicesAir Conditioner, Furnace, DehumidifierRetailer
Model numberCDS320-1Retailer
Warranty2-year warrantyRetailer
Tank / reservoir2 gallonRetailer
AlarmSafety SwitchRetailer

Alternatives worth comparing

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Final verdict

A capable, well-equipped alternative to the Little Giant.

Where to buy

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Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

How high can the CDS320 lift?
Up to 20 ft, per Aquastrong.
Does it have a safety switch?
Yes, with two signal leads to shut off the appliance.