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K120 Twin-Flo III Kick Space Heater

SKU:
K120
Rating:
(88)
Q&A:
(25)
K120 Twin-Flo III Kick Space Heater
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$385.32 each
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In Stock
Get 16 Fri, Jun 19
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Product Highlights

Product Highlight: Height (Inches)
3-7/8" Height
Product Highlight: BTU Output
12990 Max BTUs
Product Highlight: Color
Black
Product Highlight: Length (Inches)
23" Length
Product Highlight: BTU
8425-12990
Product Highlight: Width (Inches)
23" Width

Description

Kickspace heaters are the space-saving alternative to hot water baseboard. Designed to fit inconspicuously under a cabinet, in the floor, on or in the wall, kickspace heaters are ideal for hard to heat areas such as foyers, kitchens, and bathrooms.

Hot water from the home's boiler is circulated through the kickspace unit and the fan gently blows heated air into the room. The homeowner simply selects the fan speed, then the unit turns on and off automatically according to heating demand.

Twin-Flo III + kickspace heaters are your ideal solution wherever space is limited:
  • Under Cabinets
  • In Kitchens, Baths, and Foyers
  • Under Stair Risers and Windows

Specs

Height (Inches):

3-7/8"

BTU Output:

12990

Color:

Black

Type:

Hydronic

Kickspace Heaters

Application:

Hydronic Heating

Length (Inches):

23"

Product Type:

Kickspace Heater

BTU (Max):

12990

BTU (Min):

8425

BTU:

8425-12990

Width (Inches):

23"

Height:

3-7/8"

Flow Rate:

1-3GPM

Model:

K120

Depth (Inches):

12-3/4"

Water Connection:

1/2"

Thread Size:

1/2"IDFitting

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You May Also Need

6 Replacement Parts

Outlet Grille w/ Screws for K120 Twin-Flo III
SKU: BMKR08778-B12
Beacon Morris
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Product Reviews

4.55 out of 88 reviews
94% would recommend this product
4.55
out of 88 Reviews
94% would recommend this product
WRITE A REVIEW
5 star
72%
4 star
17%
3 star
7%
2 star
3%
1 star
1%
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Customer Images

Most Liked Positive Review

We love these kickspace heaters

I installed a K120 in the garage, that replaced an older hydronic wall heater. This unit performs flawlessly, and runs automatically when there is water flow out on that zone. I only turn on that zone when I want to work out in the garage. I am quite pleased with the ease of installation, and the unit puts out a lot of heat, even on low setting. I have 4 other smaller units running on our kitchen zone, and they all run beautifully, when the zones are calling for heat. I definately am a fan of kickspace heaters.
VS

Most Liked Negative Review

Noisy even on low, no better with new blower

I recently installed 4 BM kickspace heaters as part of a major remodel. 3 of the heaters were installed in BM floor cabinets, as we wanted to clean up the look of the space by removing all visible baseboard heating. The setup consists of one K42, two k84s, and one K120, with one of the K84s mounted as usual in a cabinet kickspace, and the other 3 mounted in floor cabinets. The K42 and K84's work beautifully, and are near silent on low speed. The K120, however, is another story. Starting immediately the first time the system was fired up, the K120 exhibited a low-frequency resonant vibration hum that transmitted through the floor cabinet and into the framing members. This can be heard throughout the entire space (~750 sq. ft.), and can actually be felt through the floor and any nearby furniture. On top of this, there are a couple different higher pitched harmonic fan noise frequencies that are unacceptably bothersome. These noises persisted even after inspection of the mounting within the cabinet, and attempts to dampen via additional isolation. This is just on low, mind you. On high this thing sounds like a steam locomotive, complete with 3-tone whistle. Assuming I had received a unit with a faulty motor/blower, I contacted Supply House, and their consistently excellent customer service agreed right away to ship me a replacement K120 blower assembly if I removed and returned the original assembly, letting me keep the rest of the already plumbed and wired heater in place. Well, at this point the old one has been shipped back and the new one installed, and to my dismay the new unit presents the EXACT same noise issues as the one originally installed.
Showing 1-10 of 88 reviews

Good unit

After getting a friend to solder on a couple right-angle fittings, I was able to install the heater myself. It does a great job and is pretty quiet in the slower fan mode. It is a replacement for an identical unit that worked well for 26 years.
Pete from MA
Bridgewater MA
2 months ago
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I would buy this again.

I bought 2 base board heaters, they work terrific.
Vikes
New York
6 months ago
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Highly recommend this for hot water heating systems

This is the 3rd one I have installed in our recently renovated kitchen & bathroom.
Steve
Maryland
6 months ago
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My opinion

I just finished installing 2 of the K-120 Twin Flow 3 kick space heaters. So far so good, they are blowing a lot of heat. Fan on high setting could potentially be a little loud. I will no better by the weekend, because I will be using it. My negative is, the manufacture knows that the installation for these heaters is very close quarters. When you go to hook up the electric in the panel of the heater, the knockouts in the metal case surrounding it is very soft metal and hard to get them out. There must be a better way so it's easy to get them out in such close quarters like a cabinet.
Streetglide
New York
8 months ago
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Great product

Works better than any other I have owned
Joe
NY
1 years ago
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Excellent product

Fast delivery Great seller highly recommend
John
St onge south dakota
2 years ago
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Packaging

I like the product but the packaging was sub par. They were shopped in the manufacture box not reboxed and protected by supply house. It was very disappointing
Cliff
Watertown ny
2 years ago
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This is a solid performer

I have 4 of these kick-space heaters in a large kitchen remodel, and they all work great on the zone they are attached to. Quiet when on low, and they push a lot of heat when on high setting. I have purchased another for my garage, and look forward to great operation in the future with that device.
SteveW
Colorado Springs
2 years ago
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I would by this K120 kick heater again

I did BTU calculations for a game room with cathedral ceilings 20'L x 22'W x15'H. Based on a variety of calculators the room should have 25 thousand or so BTU for heating. Its a renovation and I wanted radiant floor heating (Schluter Electric) so this would be supplemental heat under the bar I'm installing as I wanted to keep the hadronic heat zone without the baseboard heat. This kick heater says it puts out 13000 BTU max and it heats the room all by itself just fine, even on the few 30 degree days we have had so far in New England. It's pretty quiet on the low setting, but loud on the high setting as per a lot of the reviews. If it was part of the baseboard loop as an additional kick I would leave it on low and it would be fine. This being all by itself as the zone, high is fine right now and it does the job, when the radiant floor heat is in it will keep the room warm when no one is using it and when we use the room for company and the radiant floor heat I would probably turn it down low or off so we don't have to hear it. Overall good value and it works great
SMLoftus
Middleboro, MA
3 years ago
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Awesome output. Solid unit

Well built. Unit works pretty quiet. Makes a big difference in the room.
Doug
Philadelphia
3 years ago
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Product Q&A

25 Questions
25 Questions
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Q: Is the copper thick enough to use pro press fittings to connect this, or does it have to be soldered?

Asked by LeeH 7 years ago

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Verified Author and ReplyVerified Reply- Supplyhouse.com Team

It can be soldered or pro press fittings as long as you have the correct size fittings. Please see the install instructions here: https://s3.amazonaws.com/s3.supplyhouse.com/product_files/KickstartInstall2.pdf

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Q: How much heat does the K120 put out

Asked by tony 9 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

The K120 puts out 8425-12990 BTU.

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Q: Do they have a unit that can be mounted in the floor

Asked by Brett 11 years ago

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This unit can be mounted in the floor by purchasing the floor kit as well which is sku FK120.

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Q: I accidentally hooked up the supply to the return of the unit and the return to the supply. At the time I did not see the indicators on the unit and assumed it's just a coil so it should not matter. Does it matter? Can I leave it alone like this?

Asked by Tom 11 years ago

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Having the supply and return reversed will not affect the flow or the heat output, but since the temp switch is installed on the supply side and set at 140 degrees, you may have it kick off on a low temp situation if the water drops below 140 as a result of passing thru the heater. If your system is set at 160 or greater it is unlikely that you will have a 20 degree drop across the coil.

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Piping backwards will diminish performance as the air and water should flow against one another or counterflow, that is warmest water in contact with warmest air. Other than slightly diminished performance piping incorrectly should cause no harm. Since these heaters are typically applied as supplementary heaters, you likely have more capacity than you need, even if piped backwards. Sent from my iPhone

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As far as I know, the only mechanism on the unit is the thermostat/hydrostat, which tells the fan to turn on at a certain temp. There are no valves or pumps unless they've changed the design since I installed mine. So it shouldn't matter which direction the water flows. Hope this helps. Sent ia the Samsung Galaxy S® 5 ACTIVE™, an AT&T 4G LTE smartphone

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- JoeNavy

The thermostat on the supply side will turn on the blower when the supply is hot enough. If you reverse the flow the thermostat may turn the fan off when the return temperature drops during normal operation. The fan will likely cycle on and off repeatedly.

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Q: How much is a low temp aquistat for the k120 kick space heaters? Thanks

Asked by dave 11 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

The low temperature aquastat BMKR02024-L02 is available here: http://www.supplyhouse.com/Beacon-Morris-BMKR02024-L02-Low-Temp-Aquastat-for-K120

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Q: Are your k120 units available with the low temperature aquastat?

Asked by Dave 11 years ago

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yes, but they need to be purchased separately.

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Q: ALL MY LINES ARE 3/4 DO THEY MAKE A KICK SPACE HEATER WITH 3/4 WATER CONNECTIONS?

Asked by Rick 11 years ago

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no they are 1/2" but you can use a reducer from 3/4" - 1/2"

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Q: Hey guys, I am thinking of purchasing one of these units for my kitchen and bathroom remodel jobs. ONE THING I want to know - I have this flooring (Resilient vinyl plank flooring, floating floor) http://www.homedepot.com/p/TrafficMASTER-Allure-Ultra-7-5-in-x-47-6-in-Vintage-Oak-Cinnamon-Resilient-Vinyl-Plank-Flooring-19-8-sq-ft-case-517115/202352552?N=5yc1vZbzjz Since this heater is installed very close to the floor, will the heat generated from this heater warp or damage the vinyl flooring? Is the heat directed towards the ground or towards the air? Thanks!

Asked by Tom 12 years ago

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This might be nit-picky, but I want to make sure you understand what these units are. These heaters do not "generate" any heat. They are hydronic fan coils that use hot water pumped through them for heat. If you are thinking these are electric heaters, they are not.They have an electric fan, but the heating coil is hydronic (hot water). They will not produce any heat unless they are connected to a hot water source.   If you already know this, then here's how to approach your question. The discharge air temperature from these units specifically depends on the temperature of the water you are using to heat it with. If you are using 140 F water, then the air temperature cannot be more than that. If you are using 190 F water, then the air will be hotter but still less than the water temperature. Use that information to determine whether the air temp will be too high. If you aren't sure whether the material will have an issue with it, take a test piece, a thermometer and a heat gun and blow air at or above the temperature in question onto the material to test it.   Having said that, with many variations of using these, I've never had any problems with the air coming out too hot for a flooring material. One issue, if your water temperature is too low (less than 120 F at the unit), the snap disc sensor in the fan may not turn on. Here is the low temp. control that you can get.       http://www.supplyhouse.com/Beacon-Morris-BMKR02024-L02-Low-Temp-Aquastat-for-K120   I hope this helps. Good luck!

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- SteveD

The heat is directed from the side towards the direction that it is setup for. I have mine sitting on HW flooring, but this unit is like a mini radiator. Much of this answer relies on what you keep your water temperature set to. I really doubt it would damage your flooring, but am not completely familiar with that type of flooring.

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Q: does it work with steam heating system?

Asked by gabe 12 years ago

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No sir it will not

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Mine is on hot water not steam Envoyé de mon iPad

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- Watcher

No, these heaters are not designed for use with steam systems.   However, some steam systems do have a steam condensate (hot water) circuit that would work if connected to one of these units and a pump. If your system has a hot water circuit as part of its system piping, that may be suitable for these units with the appropriate pump and connection piping. Good luck!    

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- JoeNavy

The kick space heater shouldn't be connected to steam but you can connect it to the water tank on your steam boiler. You will need a circulating pump to pump the water from the boiler through the kick space heater and back to the boiler. Use a room air thermostat to turn the circulation pump on when the temperature is below the setpoint and turn the circulation pump off when the temperature is above the setpoint. The manual provides a piping diagram and some instructions. JoeNavy from South Carolina

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Q: How large should opening be cut into toe kick of cabinet to accommodate this?

Asked by Macey 12 years ago

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The manual says to cut the hole 23" wide and 4" tall.   But depending on the details, you might have an "it depends" situation. Are you going to install the unit through the same hole? If yes, you'll need it to be a big enough to allow you to slide the entire unit plus pipe connections through it. If you are going to cut a hole into the cabinet bottom and make an access door, then the hole only needs to accommodate the air flow (front AND side return air) and front switch. The hole size is not critical for operation, as long as the entire coil front is open and you have sufficient return air , it's usually an aesthetics issue.   For installations I have done, I have normally sized the hole by lining the cover grill up with the installation location and adjusting the hole to be as big as you can make it but still allow the grill and trim to cover it acceptably. You need to watch out for the cabinet carcass and how it is constructed, you don't want to cut out an important cross-piece.   I recommend an access opening in the cabinet bottom if at all possible. It will make the installation a lot easier and allows access for cleaning and servicing. If you can do that, then the recommended hole size works fine.    Good luck!     

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- SteveD

When I installed mine I made the cutout the size of the grate, excluding the sides that attach to the cabinet. Mine could have been a little smaller, but it really doesn't show.

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-

The toe kick opening for my unit was 24".

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