IPR WM20 VET Infusion Warmer | Veterinary IV Fluid Warmer

Overview

The IPR WM20 VET Infusion Warmer is a compact dry-heat fluid warmer for veterinary practices that need to warm IV fluid at the point of delivery rather than pre-warming bags in a cabinet. The WM20 warms fluid continuously as it moves through the infusion line. Staff seat the administration set in the heating groove inside the unit, close the door, and heat transfers from the heat exchanger through the tubing wall to the fluid inside. Because the warmer never contacts the fluid directly, it works with the infusion line itself rather than a dedicated warming cassette or fluid pathway. The operator sets a target temperature anywhere from 86 °F to 122 °F, and the built-in control chip brings the heater to that setpoint and holds it constant once it is reached. At 7.2 × 3.4 × 2.2 in and 1.2 lbs, the WM20 mounts directly on an IV pole beside the patient, which suits surgical suites, treatment areas, ICU runs, and recovery wards where floor and counter space are limited.

Display and User Interface

The front panel pairs a 1.8-inch LCD with a compact keypad and status indicator lights. The display shows the current temperature in °F along with on-screen status messages, so a technician can confirm the warmer’s state from across a treatment table without opening the unit. Temperature adjustment is handled in two step sizes: a coarse 1.8 °F increment for moving quickly across the 86 °F to 122 °F range, and a fine 0.18 °F increment for dialing in an exact setpoint. Setting a temperature comes down to choosing the setpoint and letting the controller bring the heater to it, which makes the WM20 straightforward for technicians, assistants, and relief staff to operate without extended in-service training. Alarm conditions are reported both visually and audibly, so staff are alerted whether they are watching the screen or working elsewhere in the room. For practices standardizing on a single warmer across surgery, treatment, and recovery, the same simple front panel applies in every area, which shortens onboarding for new team members and reduces setup errors when staff rotate between rooms.

Dry-Heat Warming and Temperature Control

Heat loss during anesthesia, surgery, and recovery is a routine concern in veterinary practice, especially in small patients with a high surface-area-to-volume ratio, and room-temperature IV fluid adds to that loss. The WM20 addresses the fluid side of the problem by warming the line itself. Its dry-heat design keeps the heating element and heat exchanger outside the fluid path, so the only material in contact with the fluid is the administration set the clinic already uses. The unit’s control chip regulates the heater to the operator’s setpoint with a stated accuracy of ±0.9 °F, and warm-up from 86 °F to 122 °F takes approximately 3 to 5 minutes. Once the setpoint is reached, the controller holds it constant while fluid continues to flow. As with any inline dry-heat warmer, fluid begins to cool in the tubing between the warmer and the patient, so both the length of line downstream of the unit and the infusion rate affect the temperature the patient actually receives. Positioning the WM20 on the pole close to the patient helps keep that downstream run short.

Dual-Channel Heating Groove and Line Setup

Inside the hinged door, the WM20 uses a dual-channel heating groove with a total warming length of 18.9 in. The channels measure 0.12 to 0.18 in in diameter, and the administration set is pressed into the groove so the tubing wall sits against the heated surface along its length. The dual-channel layout gives staff flexibility in how the line is routed through the heat exchanger. Contact IPR Medical for routing guidance with your specific administration sets. Once the line is seated, the door closes over the groove to hold the tubing in place and keep heat directed into the line. The door is monitored, and the WM20 raises a door-open alarm if it is left open, which helps prevent a line from running unwarmed after a set change or repositioning. An optional drop sensor extends the unit’s monitoring to the fluid container itself, alarming when the bottle runs empty. Because the warmer works through the tubing rather than a proprietary cassette, setup is limited to seating the existing line and closing the door.

Alarms and Over-Temperature Protection

The WM20 provides five alarms, each delivered both visually and audibly. These include a low-temperature alarm, which flags fluid warming that has fallen below the expected range, a high-temperature alarm, which flags a reading above the expected range, and a door-open alarm, which flags an unsecured heating groove. When the optional drop sensor is fitted, the unit also alarms when the fluid bottle is empty, giving staff a prompt to change the container before the line runs dry. Separate from the alarm system, the WM20 includes over-temperature protection at the heating element: if the element reaches 140 °F ± 9 °F, power to the heater is cut off automatically. This automatic cutoff is designed to keep a heater fault from continuing to drive temperature upward. For biomed and practice managers, the combination of high and low temperature alarms with an automatic heater cutoff gives a clear safety picture during acceptance testing and routine inspection, and IPR Medical can walk your team through alarm verification on request.

Mounting, Portability, and Power

The WM20 offers two IV-pole mounting methods, a lanyard and a bracket, so it can hang from a pole hook or clamp at a fixed height depending on how the treatment area is set up. The lanyard suits quick moves between patients and temporary setups, while the bracket gives a more fixed position on a dedicated pole. At 7.2 × 3.4 × 2.2 in and 1.2 lbs, the unit adds very little load to an IV pole that may already carry a pump, fluid bags, and monitoring cables. The housing carries an IP34 ingress protection rating, which covers protection against splashing water, a practical consideration in treatment and surgical areas where fluids and cleaning agents are in constant use. The WM20 operates from AC mains power across a 110 to 240 V, 50/60 Hz input range. The light weight and pole-mounted design make the warmer easy to move with the patient from induction to surgery to recovery, provided AC power is available at each location.

Service and Maintenance Considerations

The WM20 is a standalone, non-networked device, so its service needs center on temperature performance, alarm function, and the physical condition of the housing and heating groove. IPR Medical recommends periodic verification of displayed temperature against a calibrated reference so that the ±0.9 °F accuracy remains within tolerance over the life of the unit. A functional check should confirm that the low-temperature, high-temperature, and door-open alarms annunciate both visually and audibly, and, where fitted, that the drop sensor alarms on an empty container. The hinged door, latch, and heating groove should be inspected for cracks, wear, or residue that could keep tubing from seating fully against the heated surface. Mounting hardware, the lanyard, and the power connection should be checked for damage during the same inspection. Because the IP34 rating covers splashing rather than immersion, the unit should be cleaned by wiping the exterior rather than soaking or rinsing it. Contact IPR Medical to schedule inspection, temperature verification, or repair.

IPR Medical — Buy, Sell, Repair, and Parts

IPR Medical offers the WM20 VET Infusion Warmer as part of its veterinary product line, alongside the PETite family of veterinary IV infusion pumps. As an ISO 9001:2015-certified independent service organization founded in 2007, IPR Medical supports the WM20 across its full service life, from initial purchase through repair, temperature verification, and replacement of mounting accessories and the optional drop sensor. Practices adding fluid warming to an existing IPR pump fleet can source both the pumps and the warmer from a single supplier and send both to the same team for service. IPR Medical also works with clinics and hospitals looking to buy, sell, or trade veterinary and human infusion equipment, and our team can help match the WM20 with the pumps, administration sets, and mounting setup already in use at your facility. Contact IPR Medical for pricing, volume orders, repair turnaround, or technical questions about installing the WM20 in your treatment, surgical, or recovery areas.

IPR Medical buys, sells, repairs, and stocks parts for the IPR WM20 VET Infusion Warmer. Contact IPR Medical at 855-477-8866 or cs@iprmed.com with service or software questions.