AquaMotion AMH3K-7 Under Sink Hot Water Recirculation System
The AquaMotion AMH3K-7 is designed for standard plumbing systems with hot water pipe length up to 250ft for hot water tanks (non-tankless). The kit requires no cutting of pipe but does require an electrical outlet at the sink. Kit includes: stainless union pump with legs, 10 ft. line cord, built-in timer with 15 min. tabs, Aquastat/switch, fittings, check valves, hoses, tees.
The AMH3K-7N is an on-demand version of the AMH3K-7 model system and does NOT have a timer. On-demand gives you the ability to control system activation through a switch or motion sensor. When activated, the pump shuts off after 5 minutes or when the water temperature reaches 105 F. Additional on-demand switches, motion sensors, etc (AMK- parts below) have to be purchased to activate the pump.
AHM3K-7 SHOWN ABOVE WITH A TIMER. AMH3K-7N HAS NO TIMER AND MUST BE PAIRED WITH ON-DEMAND ACTIVATION BUTTONS AND ACCESSORIES (SEE BELOW).
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Do you have questions about the products on this page? Click on the ? image on the left or this link to ask us your questions! |
| #1 | Q: Have you a 12 VDC motor version of the AMH3K-7N for use in an RV? A: We do not. Sorry. Asked on 2023-05-19 by Malcolm |
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| #2 | Q: What is the max flow rate gpm on this pump? A: Up to 14 GPM (no piping attached) depending on the head pressure. 6 GPM at 7.5 feet of head pressure. Here is the chart: https://www.hvacquick.com/catalog_files/AquaMotion_AMH3K7_Submittal.pdf Asked on 2022-01-19 by Jimmy |
| #3 | Q: Can you explain exactly how your AMH3K-7 works to provide instant hot water even though my tank is 40 feet way? Right now it takes a full minute to get even warm water flowing. I want this for my kitchen sink. There is a bathroom on the hot water line between my kitchen and hot water tank. Is that affected? Thank you. A: The pump pulls water from the water heater through the hot water line and pushes it back to the water heater using the cold water line, making a loop. Once the pump senses that hot water has arrived at its location it shuts off. It cycles on again as the hot water cools off to pull fresh warm water to its location. Asked on 2021-02-02 by Charles |
| #4 | Q: Will AMH3K-7 work OK with WH with heat traps (Bradford-White)? A: Yes. Heat traps are fine. Asked on 2021-01-16 by Ron |
| #5 | Q: Whats the timer for? I need a switch that will start it and ones it reches temperature to turn off by it self. A: The AMH3K-7 has a timer instead of on-demand switches. When the timer is active, the pump cycles as necessary to maintain temp. When the timer is inactive the pump does not cycle (stays off). Sounds like you need the AMH3K-7N which is meant to be used with on-demand switches. Asked on 2021-01-03 by Adrian |
Related Products
AquaMotion AMH1K-3UV Pump and Valve Hot Water Recirculation System
Split pump and bypass valve kit. Pump installs at water heater. and valve under sink. For standard plumbing, single pipe systems with a hot water tank. With timer.
AquaMotion AMH2K-7 Dedicated Return Line Water Recirculation System
Recirc system for dedicated return lines with a hot water tank (non-tankless). Timer or on-demand models. Up to 250 ft. total pipe length.
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