Hi & Dry Battery Backup Sump Pumps

What Makes the Hi & Dry Backup Sump Pumps so Unique?

Backup sump pump protects your furnace, hot water heater, or finished basement against flooding. They come on automatically whenever there is a power failure or the main pump fails or is just overwhelmed. The backup sump pumps sold in stores are made as cheaply as possible because they have to run only infrequently. However, we believe that backup sump pumps should be practically 100% reliable because it is your last line of defense!

Battery Backup Sump Pump by RadonSeal

  1. OUTSIDE-THE-BASIN – The only back-up sump pump placed high and dry above the dirty sump water. No clogging, mineral deposits, or corrosion for superior reliability and longevity.
  2. FITS INSIDE SMALL PITS – Ideal for smaller sump pits common in most homes, which are just too small for two pumps and two floats. If the floats get stuck or entangled, it will flood your basement.
  3. LONGEVITY – A must if you have a water softener. It dumps brine and salt water into the pit, which causes corrosion and premature failure of any submerged pump.
  4. AGGRESIVE WARRNTY – Heavy-duty pump, float, and auxiliaries. Double the industry standard warranty period.
  5. COMPLETE DIY KIT – Not just a pump but, except for battery, a complete installation kit. All connections, hoses, and alarm included.
  6. EASY INSTALLATION – A handy homeowner can install the pump within an hour!

30-DAY MONEY-BACK SATISFACTION GUARANTEE – If not completely satisfied, you can return the pump for a full refund of the product price, excluding shipping charges, within 30 days of shipment.

2-YEAR MANUFACTURER WARRANTY – All the pumps are warrantied against defects in material and workmanship for a period of two years from the date of shipment. The manufacturer, at its option, will replace or recondition the product at no charge. Shipping the product back to the manufacturer is at your cost.

Order Today

Not sold in stores but shipped directly from the factory to your door. Orders received by 2 PM ET usually ship the same day and delivered by courier within 2 to 5 workdays. For expedited shipping or shipping to other states and Canada, please inquire first by e-mail or telephone.

Hi & Dry Battery-Powered Backup Sump Pumps
Item Price Shipping  
Battery Backup Sump Pump: RH-1400 $389 $20 Order Now button
Battery Backup Sump Pump: DH-900 $229 $15 Order Now button
Extra Battery Case w/cables (optional) $31 $9 Order Now button

Top of the Class Pump Performance

The Hi & Dry emergency sump pumps are powered by a heavy-duty, high-efficiency DC motor (submersible). Higher pumping capacity than the backup sump pumps sold in stores. (Typically, by 50 to 100%.) The lift ("head") is the vertical distance from the bottom of the suction pipe to the highest point of the main discharge pipe. The higher the lift, the lower the pumping rate – but it does not drop off dramatically until about a 15-ft. lift.

PUMPING RATES (Gallons per hour)
 Model: RH-1400
(outside the pit)
(bracket mounted)
5-ft. lift 1,800 gph 1,300 gph
9-ft. lift 1,400 gph 900 gph

Emergency backup sump pumps are supposed to operate only rarely and have a lower pumping rate than primary pumps. But there is no need to match the capacity of the primary pump. The backup pump may take twice as long to pump out the pit (say 12 seconds instead of 6) in each cycle but it does not matter. Then, it just waits until the pit fills up again. The main criterion is reliability, not raw power.

An example: The RH-1400 with the vertical float switch set at an 8" swing, emptying a typical 18" tapered basin, pumps out over 8 gallons in each cycle. If it cycles every minute under severe conditions, it is pumping out about (60 x 8=) 480 gallons per hour. A much larger primary pump would pump out the pit much faster in each cycle but it will still move the same volume of water every hour. Nonetheless, if you would want a top-capacity backup, the solution is our FloodWatch Backup Sump Pump.

"Continuous" (1-min) 12 hrs 24 hrs
5-min 48 hrs (2 days) 96 hrs (4 days)
15-min 96 hrs (4 days)
192 hrs (8 days)

For both RH-1400 and DH-900. Based on fully charged batteries disconnected from power supply.

The high-efficiency motor and a true shut-off float switch minimize the power drain on the battery. And if you want to double the pumping time of the backup, you can purchase an extra battery case with a set of interconnecting cables for a dual-battery set-up. For technical information on both battery backup pumps, please review Backup Sump Pump Specifications.

Battery Size

Deep Cycle Marine BatteryYou do not have to pay for an over-priced proprietary battery and shipping. You are free to find the best deal in a local store (usually $65 to $100). Nationwide retailers: Sears, Walmart, West Marine, Advance Auto Parts, Iterstate Batteries, AutoZone, Car Quest, MK Battery, Pepboys, Optima Batteries.

You have to purchase a 12 Volt Marine Deep Cycle Battery size 27. Deep cycle batteries have thicker plates than starting (cranking) batteries to allow repeated discharging without warping. The common "maintenance-free" sealed lead acid battery will do the job and does not need adding water. There is no real need to pay twice as much for a gel cell or absorbed glass mat battery. The finish charger (included) is suitable for all these battery types.

Typical specifications: 12 Volts DC, 95 Amp-Hour, 600 CCA. Size 27 or larger but not exceeding 13” long x 7” wide x 10” high. Stud post ¼” or 3/8”. A GFCI outlet is needed nearby to plug in the unit.

MODEL RH-1400 – "Outside-The-Pit" Pump Design

battery-powered pump layoutInstallation Instructions RH-1400

The Hi & Dry™ RH-1400 backup sump pump sits on the floor outside the sump. Only its suction pipe and vertical float are inserted into the pit. (The footprint is about 5".) This pump has a slim-line vertical float switch to prevent floats from getting entangled. A heavy-duty, widely adjustable float.

The suction pipe reaches almost to the bottom of the sump pit, so that it can empty the pit in each cycle. Other back-up sump pumps can lower the water level only a couple inches and frequent start-ups shorten the pump's life.

MODEL DH-900 – The Bracket-Mounted Pump Design

battery-powered back-up sump pump layoutInstallation Instructions DH-900

This DH-900 pump also features an ingenious design for maximum reliability and long service life. It is sufficient for most homes with lower or average sump pump flows. The backup pump sits on a stainless steel L-bracket inside the pit but above the normal high-water level. The pump has a small footprint inside the pit – about 8". Ideal for narrow but tall sump pits.

All the connections have compression fittings – there is no gluing. Of all the backup sump pumps on the market, this is the easiest pump to install. You may be done in half an hour!

About the "Hi & Dry" Pump Design

Avoid Batteries! Use Water.
Check out the most reliable backup sump pumps!
Hi & Dry Water-Powered Backup Pumps

Most people discover they need a backup sump pump or that there is such a thing when it's too late. Their basement has already flooded due to a power outage or sump pump failure. They have found out that home insurance does not cover the flood damage to their finished basement (say $40,000). Nor does it cover mold remediation (say $12,000). Having learned the hard way, they pick up a back-up in a big box store but nobody warns them that:

  • The backup pump is even less reliable than the not-so-reliable primary pump it is supposed to back up.
  • It may interfere with the primary pump float and actually cause basement flooding.
  • It has a short useful life and needs replacing after 2–4 years.

The high water level in the sump pit should not reach the drainage tiles. Filling the tiles and gravel bed underneath the floor slab would greatly extend each pumping cycle and soak the concrete slab in water. The adjustable vertical float of RH-1400 or the adjustable bracket of DH-900 with its tethered float will allow you to optimize the pump setup inside the sump pit. Hi & Dry pumps feature a heavy-duty true on/off float switch that shuts off the power after emptying the pit.

WIDELY ADJUSTABLE FLOATS – The vertical low-profile float of RH-1400 can be clamped at any height on the main discharge pipe and the float travel is also widely adjustable (up to 9 inches). Whenever the water level in the sump pit rises too high, the float reaches a switch at the top of the float rod and activates the backup pump. The pump will shut off when the float fully drops to the normal down position – the bottom stopper (the Off switch). The placement of both switches is easily adjustable up or down. The bracket of the DH-900 pump and the elevation of the pump within the pit are widely adjustable. The DH-900 tethered float can be clamped at any suitable height inside the pit.

battery sump pump photo
RH-1400 Click to enlarge

The bottom of the RH-1400 suction pipe has a stainless steel screen and a one-way foot valve, which holds water in the backup branch to keep the pump primed. The flexible discharge pipe (1") is connected to the main discharge through a T-connector (included). The DH-900 discharge hose can be connected to the main pump discharge or can have a its own separate discharge to the outdoors.

Each pump kit includes a high-impact battery case to protect the battery and terminals. An automatic finish charger ("float charger") keeps the battery fully charged without over-charging and unlike a trickle charger, also maintains a steady voltage. It prevents the water in the battery from boiling out due to over-charging. Colored battery status lights keep you informed on the charging status and condition of the battery. The installed pump must be protected against freezing.

ALARM – Loud audible alarm on the battery box, which is separately activated by the float, lets you know that the backup pump is operating.

Comparison with Other Backup Sump Pumps

There are good reasons why other backup sump pumps are guaranteed for only ONE YEAR!

DON'T BE MISLED BY CLAIMS – Most backup sump pumps sold in stores have a low pumping capacity – typically 700 gph at 10' lift. (do not be misled by claims of 1,500 gph at 1' lift!) and most are installed right above the primary pump attached to a T-connector. The main check valve sits right on the discharge from the primary pump, below the T-connector. It is exposed to strong turbulence and constant pressure fluctuations. Such a stressed main check valve will break or develop a hole. Once the main check valve fails, all the water pumped from the backup sump pump will flow down through the primary pump into the pit. The basement will flood!

POOR SECONDARY CHECK VALVE – Their secondary check valve is just a thimble-like rubber flapper between the back-up pump discharge and the T-connector, where it is exposed to strong turbulence. A failure of this cheap check valve will allow water pumped from the primary pump to flow through the backup pump back into the pit. The basement will flood.

NON-ADJUSTABLE – Their pump elevation is not adjustable. It cannot start pumping until the water level almost reaches the underside of the concrete slab and fills drainage tiles. If the sump pit is shallow, water will wick through the concrete. (The pump has to be cocked to avoid air lock.)

WEAK FLOATS – Cheap floats are the "weak link" of many pumps. If the float breaks, the pump does not work and the basement floods. The pumps also do not have a true float switch for turning the pump on and off. The tiny "toy" float switch just turns the pump on. Then, the pump runs for a pre-set interval (10 to 20 seconds), whether there is water or not. This wastes power and shortens the battery life.

EXTRA PARTS NEEDED ($$) – You have to buy separately auxiliaries like an alarm and they often insist that you buy their proprietary battery at an inflated price.

The Complete Pump Installation Kit

battery-powered pump kit RH-1400 battery-powered pump kit RH-1400
RH-1400 kit DH-900 kit

All accessories for a typical installation, except for the battery, are included. Each pump kit includes:

  • Powerful pump and motor
  • High-impact plastic battery case with cables
  • Finish battery charger with battery status lights
  • PVC suction pipe (1-1/4") with one-way foot valve and stainless steel screen for RH-1400
  • Vertical float switch for RH-1400 or tethered float for DH-900 with a clamp
  • T–connector for insertion into the main discharge pipe with adaptors and a check valve for DH-900
  • Flexible discharge hose (1") and clamps
  • PVC fittings for a typical installation, all stainless steel hardware
  • Integrated buzzer alarm to let you know that the primary pump is not working
  • Illustrated installation and maintenance instructions.

Easy Do-it-Yourself Installation

battery-powered pump kit RH-1400 battery-powered pump kit DH-900
RH-1400 DH-900

Make sure there is a good-quality, fully functioning main check valve well above the primary pump but below the backup discharge T- connection.

Tools and supplies needed – a PVC cutting tool or hand saw, PVC primer/cleaner and cement for RH-1400, Phillips and slotted screwdrivers, utility knife, tape measure, and large adjustable pliers. The pump installation is a breeze! Main steps:

  1. Place pump in position on the floor or on the bracket
  2. Install the T–connector on the main discharge pipe and connect to pump with a flexible discharge hose
  3. Install suction pipe (only for the RH-1400)
  4. Mount float switch and alarm
  5. Install battery and plug in.

If there is a sump pump cover, drill a hole for the RH-1400 suction pipe or the discharge hose of the DH-900.

The PVC suction piping for RH-1400 includes a 2-ft. section for insertion into the pit, an elbow, and a 1-ft. section for the horizontal distance from the pit. The piping can be cut as needed or substituted with longer piping, providing the suction height does not exceed 4 ft. The end of the suction pipe should remain submerged when the primary pumps empties the pit.