How to Install an Instant Hot Water Dispenser, Faucet and Water Filter – Part 5

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Reinstall the garbage disposal and test the new hot water dispenser. This project is continued from How to Install an Instant Hot Water Dispenser, Faucet and Water Filter – Part 4.

The instant hot water dispenser and under sink water filter plumbing connections are now complete!

Instant Hot Water Dispenser and Under Sink Water Filter Installation

Re-Install the Garbage Disposal

The Waste King Legend L-8000 garbage disposal is reattached to the mount ring, the electrical cord plugged into the receptacle, and the PVC waste arm swung back in place and connected to the disposal unit. Take care to tighten the PVC slip nuts on the drain pipes to prevent a leak. Notice the instant hot water dispenser tank is NOT plugged into because the water supply is still OFF and the tank must not be heated while empty.

Instant Hot Water Dispenser Installation: Reinstall the Garbage Disposal

Turn on the Water and Flush the System

The next steps are to:

  • Turn the water to the house back ON.
  • Close the several open faucets in the house that were opened previously to drain the pipes.
    Give it a minute or so to flush the air out the pipes while the faucets hiss and spat air in the lines.
  • Open the quarter turn hot and cold water stop valves under the kitchen sink.
  • Turn on the main kitchen faucet to flush the air out of the lines.
  • Hold open the instant hot water dispenser faucet for about 5 minutes to flush the air from the Filtrete water filter and Waste King hot water tank.
    The Westbrass Velosah hot water faucet handle is spring loaded and has to be held open for water to flow. I laid my wrench on the handle to hold it open rather than stand there for 5 minutes.
  • Check all the under-sink plumbing connections and fittings for leaks while flushing the system.
    I visually check for leaks with a bright light and also by feeling around the fittings for wetness.

Remember, the instant hot water dispenser is NOT plugged in at this time.

Instant Hot Water Dispenser Installation: Fill and Flush the System

Faucet Pull-Out Sprayer: Potential Problem

The main kitchen faucet has a pull-out sprayer head. I noticed the sprayer hose would rub against the blue plastic water filter supply tube as shown in the red inset of the photo below. I might never be a problem, but I was concerned the metal braided sprayer hose would rub a hole in the blue plastic line over time and cause it to spring a high pressure water leak.

To correct this potential problem:

  • I went through the routine of shutting off the water to the house, opening faucets to relieve the water pressure and drain the house pipes.
  • Disconnected the blue plastic water filter line from the 1/4 turn 3-way stop valve.
  • Loosened the 3-way stop valve compression nut and turned the valve body counter clockwise to route the water filter line in front of the PVC plumbing vent stack where it wouldn’t be touched by the faucet sprayer pull-out hose.
  • Reconnected the blue water filter line to the 1/4 turn stop valve.

Reroute Water Filter Line to Avoid Rubbing on the Pull-out Faucet Sprayer Hose

I turned the house water back on and flushed the air out of the system.

Instant Hot Water Dispenser Testing

I plugged the hot water dispenser electrical cord into the dedicated 20 AMP single outlet protected by a ground fault circuit breaker, then set the thermostat control dial to “High Max” per the Waste King Quick & Hot instructions. The instructions state the water temperature should reach about 200 degrees F in 15 minutes.

Instant Hot Water Dispenser Installation: Temperature Control Set to Max

Here’s the finished instant hot water dispenser installation. I’ve covered that hole in the bottom of the cabinet with a plastic disk sealed with a bead of non-adhesive silicone caulk so small items wouldn’t be lost.

Kitchen Sink Instant Hot Water Dispenser Installation

The hot water is indeed scalding hot with generous amounts of steam!

Instant Hot Water Dispenser Installation: Hot Water and Steam!

My wife and daughter really like the instant hot water dispenser and it’s a nice convenience. They said there’s no hint of chlorine in the water with the Filtrete under sink water filter. They use the dispenser all the time for hot tea. I prefer ice tea, so I’ll steep a tea bag for several minutes then add ice. The scalding water also works wonders for dissolving sticky or baked on food when scrubbing dishes.


Bob Jackson

Copyright © 2019   Reproduction strictly prohibited.


  1. Jason Lyman September 29, 2012 at 12:26 pm - Reply

    very helpful article – thank you!

    I had a question about those white quick-connect fittings…. how does one *disconnect* them? I need to take out an existing how water system and am hoping to re-use some of the existing lines. Do I just need to pull apart with some force, or is there a release of some kind?


    • Bob Jackson September 29, 2012 at 1:42 pm - Reply

      Never force the quick-connect fitting apart. To disconnect the fitting, press the spring-loaded collet (part that hugs the tube) inward towards the fitting and the tube will easily pull out. This YouTube video shows how:

  2. Jason Lyman September 29, 2012 at 3:36 pm - Reply

    Thank you so much for the reply. Had no idea it was so simple. Really appreciate it!

  3. Wade January 25, 2013 at 1:09 pm - Reply

    This is a pretty great walkthrough! The challenge I have is where your faucet has the 2 copper lines, mine has braided stainless lines with compression nuts at the ends. This whole thing is a little bit different than what I’m used to with basic under sink connections, but I think you’ve given me enough to figure it out. I’m replacing a failed InSinkerator cold/hot filtered water dispenser in the house we just bought, and you’ve actually inspired me to try to retain the existing filtration system and just replace the hot water tank and faucet portion. We don’t need the filtered cold water since our refrigerator has that feature.

    • BobJackson January 25, 2013 at 5:59 pm - Reply

      Thank you! Let me know how your project goes.

  4. Ed March 1, 2013 at 3:59 pm - Reply

    Great tutorial.
    I’m replacing my Franke Little Butler tank with this unit, which is made by the same manufacturer.
    I just hope that the Quick and Hot Elite series has a better track record, as the Franke unit has, over 5 years, leaked from the rubber hose 3 times, and finally the internal tank failed…. Franke sent me a retrofit kit to address the issue with the rubber hose melting (!) due to excess heat at the fitting, however they will not warranty the tank.

  5. Ken May 25, 2013 at 12:34 pm - Reply

    I have a ‘Quick and Hot’ AH 1300. The ‘Quick-Connect Filter Screen at Cold Water Inlet’ section of the manual says pry the ‘cap’ off, using screw driver inserted in the cap ‘notch’. Which Quick-connect am I using? There are two. Assuming it’s installed properly, which quick-connect, and what end of same do I ‘pry on’? I’ve tried to pry a little, but it seems that I’m going to screw up the plastic
    cap. So I stopped. Turned everything back on, no leaks. Now what? Can you help or suggest what
    my next best move is, short of calling a plumber? Mom has money, lots, but she’s kind of cheap, so I try to help. Thanks. Ken

    • BobJackson May 25, 2013 at 5:53 pm - Reply

      As illustrated in the Quick & Hot tank installation guide on page 5, the small cap is there to prevent the cone shaped filter element from falling out during shipping. As called for the tank installation guide it must be pried off, otherwise two things will happen:
      1. The connector won’t mate with the water line.
      2. The cap obstructs the flow of water if you somehow managed to jam it onto the line.

      So don’t worry about messing up the plastic cap because it’s a throw-away item. Just don’t damage the connector housing.

      This wasn’t an issue for my installation because I didn’t use the connector/filter included with the kit as explained/illustrated in Part 4 of the project and noted in the plumbing diagram.

      > Mom has money, lots, but she’s kind of cheap, so I try to help.
      Nice Mom! Good son!

  6. Sandy May 25, 2013 at 8:12 pm - Reply

    The rubber hot water tube on my unit continues to erode a hole in it. I have trimmed this and reconnected at least 3 times. Is it the heat causes this and I need to turn it down? Is there another cause?

    • BobJackson May 26, 2013 at 6:49 am - Reply

      What is the make and model of your hot water faucet? How old is the faucet? It’s probably a combination of heat and age causing your rubber hot water tube to fail. Turning down the water temperature may help, but that defeats the purpose of a hot water dispenser.

      Consider replacing the old hot water tube with a new Santoprene tube or the entire faucet if your unit is many years old.

  7. Marie May 27, 2014 at 1:36 pm - Reply

    Help! Yikes! It has been 7 months since my santoprene tube developed a leak on my 4 year old Wats instant hot and cold watts system with Madera Anaheim manuf. dual ( hot & cold) faucet.
    I called a water treatment company to repair. They charged me $90 for the call to tell me we don’t do that. I called the faucet manufacturer and the sent me a new santoprene tube but no new clamps and the old one is not tight so still leaks. The original installer did not install separate shut offs so I gave been with out dishwasher and refrigerator ice maker because they are all on same shut off. How do I find a honest repairman who will have the correct parts and will fix it properly without overcharging a widow ?

    • Bob Jackson May 27, 2014 at 6:47 pm - Reply

      Try and search for a plumber in your area with great reviews and an A+ Better Business Bureau (BBB) rating. Describe the leak, got a new hose and give them your faucet and hot water dispenser model #s to ensure they can service your unit. I think your repair will be simple.

      You could also call Anaheim Manufacturing and ask for the plastic hose clamp. I assume the hot water tube is leaking at the hot water dispenser hose fitting?

      The Madera Faucet installation guide may be helpful.

      You can e-mail photos to bob (at) if you’d like me to take a look. If you have a friend that’s handy they could probably do the repair job.


    • Bob Jackson May 27, 2014 at 6:50 pm - Reply

      Forgot to mention you should unplug the power cord from the hot water dispenser to avoid electric shock until the leak is fixed.

  8. Mike November 7, 2016 at 6:28 pm - Reply

    Thank you so much for sharing so detailed information about all of your projects!
    Do you happen to know if it’s possible to have a sink sprayer working with the hot water dispenser? How can I get hot water from the sprayer too?

    • Bob Jackson November 7, 2016 at 7:28 pm - Reply

      The instant hot water dispenser is not designed to be connected to a hot/cold water faucet or sprayer hose. Per the installation instructions on page 1 (bold emphasis added):

      This product is not intended to produce a continuous flow of hot water. The standard model will
      produce up to 60 cups of water per hour at approximately 190°F (88°C). Due to high water
      temperature, for safety reasons, the tank is not under pressure. Consequently, there is a slight
      delay of water flow after the faucet has been activated. This is normal and indicates that the
      expansion chamber is functioning properly.

      If you were able to connect it the hot/cold cold water faucet the problems you’d have are:
      * Backflow into the hot water dispenser expansion tank if the hot or cold water feeds were mixed in due to the higher supply pressures.
      * The kitchen faucet components, o-rings and sprayer hose might not be able to handle the 190°F water temperature.
      Home hot waters should be set to 120°F to prevent scalding.
      * Risk of the sprayer being pointed the wrong way and/or splashing scalding water causing severe burns.

      The gooseneck hot water faucet has plenty of clearance for rinsing & melting away grease or cheese off a pan or plate before sticking it in the dishwasher.

      • Mike November 12, 2016 at 1:49 pm - Reply

        Thank you so much for your reply and the thorough explanation. I’ll look for a different solution then, I’d really like having warm water from the sprayer.

  9. Craig Ramsey November 27, 2018 at 3:57 pm - Reply

    So after hook up, I fill the tank with water by turning on the faucet. I hear the tank filling and after a short while water starts to come out telling me the tank is full. I release the handle and it springs to the off position but the water still continues coming out. It lasts about 2 minutes and the tank is half empty. Is the problem with the faucet or tank? Does the tank need to be powered on to work correctly?

    • Bob Jackson November 28, 2018 at 10:27 am - Reply

      The tank operates at atmospheric pressure to prevent a steam rupture/explosion. The problem is the faucet isn’t fully shutting off. Try tightening the hold-down ring at the base of the faucet handle. If the ring is loose the faucet won’t shut off immediately. The ring on my faucet has two small holes on each side. There’s probably a special tool but I found a pair of snap ring pliers will work; a little awkward but does the job.

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