Printer friendly page

Grundfos UP10-16 A PM BU/LC 98420224 Hot-Water Recirculating Pump

SKU: 516335
   based on 1 Reviews
Save 53% · Retail: $578.00

In Stock and Ready to Ship!

Ships From Price Qty
Order From Manufacturer
Available to Ship in 4-5 weeks

About the Grundfos 98420224

This Grundfos "Comfort PM Auto" hot-water recirculating pump (Part 98420224, Model UP10-16 A PM BU/LC) assures that hot water is immediately but efficiently available at every faucet, fixture, and appliance in your home. The pump recirculates cooled water via return piping back to the water heater for reheating. The intelligent AUTOADAPT function of this model "learns" the hot-water consumption patterns of the home owners and adapts operation times accordingly. Once configured, the pump will only run when needed, resulting in a substantial reduction in wasted water and electricity. The Grundfos Comfort PM pump has two additional operating modes: Temperature Mode maintains an automatically detected water-temperature range within an individual system, and 100% Mode runs the pump non-stop at full speed. Regardless of the operating mode, this recirculating pump runs silently as it helps provide hot water on demand. The Grundfos UP10-16 A PM BU/LC pump with AUTOADAPT has a compact design that makes it easy to install in existing homes or new construction. This 115V pump has a lead-free brass housing with 1-1/4-inch NPSM union connections. It features a check valve, an isolation valve, and a 6-foot line cord. The Grundfos Comfort PM consumes as little as 5-8.5 W, can save up to 16,000 gallons of water per year, and is backed by a 2-year limited warranty.

Product Details

Manufacturer: Grundfos
Product: Pumps
Electrical Voltage: 110-120 Volt
Flow Rate: 2.2 Gallons Per Minute
Mpn # 98420224
Shipping Dimensions 4.0" x 6.3" x 7.5"
Weight 4.00 lbs.

Product Features

  • This model has 1-1/4-inch NPSM union connections; and it also has a check valve and an isolation valve.
  • Three operating modes: AUTOADAPT for the most efficient use of water and energy, Temperature Mode, and 100% Mode.
  • AUTOADAPT function "learns" and adapts to homeowner's water temperature needs, ensuring that pump only runs when required.
  • Whisper-silent operation with low-noise, permanent-magnet motor, which also reduces energy consumption to as little as 5 to 8.5 watts.
  • Maximum comfort with lower wait times for hot water, reducing wasted water and electricity.
  • Compact design makes this pump easy to install, even in confined spaces; and the insulation shells help make installation fast.
  • Integrated external-sensor cable mounts simply onto the hot water supply line.
  • Lead-free brass housing eliminates risk of corrosion.
  • All products certified to NSF-61 and NSF-372 standards.
  • 6-foot line cord
  • 115V
  • Flow, Qmax: 2.2 GPM (0.5 m^3/h)
  • Head, Hmax: 3.9 ft (1.2 m)
  • Liquid temperature: 36-203 degrees F (2-95 degrees C)
  • Comprehensive 2-year limited warranty


Rated 4 out of 5 based on 1 reviews

 Rated 4 by Thomas W.

Originally posted on Jun/2017

Questions & Answers


Hello! There are now product details listed on the website under the product. You can also call us at 435-868-4020. Thanks!


Good day! We appreciate your interest in our Grundfos UP10-16 A PM BU/LC 98420224 Hot-Water Recirculating Pump. Yes, this product can be used with open system hot water heaters. If you wish to purchase this product, click Add To Cart now to confirm your order! Thank you for shopping with – the perfect place to find high-quality products at low, low prices!


Page 33 of the said data booklet holds a lot of information and suggestions from the manufacturer. Thank you!


Good day! See pages 6-8 of this data booklet for the Grundfos UP10-16 A PM BU/LC 98420224 Hot-Water Recirculating Pump. As you go along, you should be able to locate the sensor to the hot line without too much trouble. If you still have any questions, feel free to post another one here on Have a great day!


Good day! Thanks for posting a question about the Grundfos UP10-16 A PM BU/LC 98420224 Hot-Water Recirculating Pump. The kind of operation mode you're going to use depends on your application. The Auto mode learns, stores, and adapts the operation time of your consumption pattern. The 100% mode lets the pump run constantly at full speed while the Temperature mode keeps the water temperature within an automatically detected range in the individual system. Take a look at this specification sheet for reference. If you are all set to purchase this item, just click on Add to Cart. Enter your zip code to get a shipping cost estimate and proceed to checkout to begin the ordering process. Thanks for choosing as your online shopping buddy. Have a great day!


Good day! Thanks for posting a question about the Grundfos UP10-16 A PM BU/LC 98420224 Hot-Water Recirculating Pump. Sorry to hear that you're having a problem with your pump. Yes, it sounds like your pump is defective. It could be that the power source is damaged or probably a loose cord. If you bought the pump from us contact our customer service to exchange your pump for another. We would recommend you to contact Grundfos at 800-333-1366 to better assist you. We hope this helps. If you have other questions, you can contact one of our customer support specialists @ 435-868-4020 between 8:00 AM and 7:00 PM MST. If E-mail is your preferred method of contact, you can email them at and they will be happy to assist you. Thank you for visiting Hope you have a stress-free day


I'm sorry to hear about your Grundfos 98420224 UP10-16 A PM BU/LC hot water recirculating pump. What you can probably do first is to check if the installation is correct. If you need further troubleshooting assistance, it would be best to contact Grundfos at 800-333-1366. Thank you for visiting!


Hi, there! Thank you for inquiring with us. This Grundfos UP10-16 A PM BU/LC's AutoAdapt feature uses LED lights as indicators. If your boiler goes through its air proving and ignition phase, your Grundfos recirculating pump flashes orange/green. When it meets the flow temperature, then the light flashes green. If the indicator light goes red then turns off, then that means that you have a defective external temperature sensor but if it turns red and does not turn off, it means that you have a defective internal temperature sensor. You can take a look at this data sheet for additional information. Thank you and we hope to see you visit us again here at!


Hi, there! Are you asking about the AutoAdapt feature and how it works? Upon installation, the Grundfos UP10-16 AutoAdapt feature works by analyzing the system pressure, it then selects the optimal setting, and controls the optimal system pressure. The settings will constantly change based on the AutoAdapt feature's judgment and will be applied quickly. Please take a look at Gundfos' features page for additional details. Thank you and we hope to see you shop with us again here at!