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Standard Aquastat Assembly for K42 & K84 Twin-Flo III

SKU:
BMKR02024-001
Rating:
(19)
Q&A:
(1)
Standard Aquastat Assembly for K42 & K84 Twin-Flo III
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$22.02 each
In Stock
In Stock
Get 20 Mon, Jul 6
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Easy Returns No restocking fee for 90 days

Product Highlights

Product Highlight: Used With
K42, K84

Description

Beacon Morris BMKR02024-001 Standard Aquastat Assembly for K42 & K84 Twin-Flo III
A replacement aquastat (temperature-activated control/sensor assembly) used with Beacon Morris Twin-Flo III kickspace heaters to control blower operation based on water temperature.

Key Features:
  • Standard aquastat assembly
  • Product type: Aquastat
  • Application: Replacement Part
  • Listed "Used With": K42 and K84
  • Listed contact temperature: 120°F
  • Q&A guidance states it activates the blower when water temperature rises above 120°F

Compatibility & Applications:
  • Listed for Twin-Flo III kickspace heater models K42 and K84
  • Beacon Morris describes Twin-Flo III kickspace heaters as operating with an existing hot water supply (boiler/water heater) and being factory-wired with simple 115V electrical and 1/2" piping connections for the heater installation (manufacturer overview)
  • Must only be used where the manufacturer specifies this exact part number: BMKR02024-001

Installation & Operation Notes:
  • Installation should be performed by a qualified hydronic/HVAC technician.
  • Refer to the unit's service/installation manual for the correct aquastat location, mounting method, and wiring/operational checks.
  • Q&A guidance indicates this control is intended to bring the blower on when water temperature exceeds the specified threshold (above 120°F), so setup should confirm proper temperature contact and secure mounting per the unit documentation.

Maintenance & Troubleshooting:
  • This part relates to blower-on/blower-off behavior tied to water temperature; if the heater fan does not start when expected, or runs inconsistently, the aquastat/sensor assembly may be evaluated as part of troubleshooting (per its described function).
  • User feedback includes cases where the aquastat was replaced as a first step before larger repairs (for example, trying the aquastat before replacing a motor assembly), and at least one report where replacement did not resolve the underlying issue - confirm diagnosis per the unit documentation.

User Reviews & Q&A Summary:
  • Fit/use themes: reviewers commonly describe it as an exact match/direct replacement that fit and worked as expected.
  • Installation notes: several reviewers describe easy installation, and one review notes it snaps onto 5/8" OD pipe for their application.
  • Issue themes: a small amount of feedback mentions receiving a part missing a component or with a distorted bracket, and one reviewer notes that while it was a direct replacement, it did not fix their specific problem.
  • Q&A theme: the blower activation point is tied to water temperature, with guidance that it activates above 120°F.

Specs

Application:

Hydronic Heating

Product Type:

Aquastat

Type:

Aquastat

Used With:

K42

K84

Contact Temperature:

120°F

Contact

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Product Reviews

4.58 out of 19 reviews
89% would recommend this product
4.58
out of 19 Reviews
89% would recommend this product
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Most Liked Positive Review

Worked Perfectly On My Older Model Twin Flow 2 K84

First great service from Supply House. I couldn't beleive how fast I received it with basic shipping. I was first advised by SH tech support that this part was different on Twin Flow 3 series K84 than older model - Twin Flow 2 K84. I decided to give it a try anyway since I figured the part should be able to retrofit into my older unit. As it turns out it installed and worked perfectly. The mounting of the thermostat onto the bracket that clips onto the pipe is a little different but just adjusting the mounting bracket a little and making sure that the surface of the thhermostat touches the pipe on the radiator worked perfectly. I'm glad I tried this first before replacing the whold unit!
VS

Most Liked Negative Review

VERY DISAPPOINTED

ZERO STARS!!! Such a simple product but came missing a part and the bracket distorted. But I needed it so I tried to make it work and therefore un-returnable. NO LUCK. Lately a lot of parts have been arriving damaged in way or another. Not blaming SupplyHouse necessarily, but their suppliers need to improve their packaging.
Showing 1-10 of 19 reviews

Completely satisfied

Work perfectly
Joe
Philadelphia
7 months ago
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Worked Perfectly On My Older Model Twin Flow 2 K84

First great service from Supply House. I couldn't beleive how fast I received it with basic shipping. I was first advised by SH tech support that this part was different on Twin Flow 3 series K84 than older model - Twin Flow 2 K84. I decided to give it a try anyway since I figured the part should be able to retrofit into my older unit. As it turns out it installed and worked perfectly. The mounting of the thermostat onto the bracket that clips onto the pipe is a little different but just adjusting the mounting bracket a little and making sure that the surface of the thhermostat touches the pipe on the radiator worked perfectly. I'm glad I tried this first before replacing the whold unit!
Ray
Havertown, PA
8 months ago
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Snaps onto 5/8" OD pipe

Works great for my application
Ed S
York PA
2 years ago
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Would recommend this product

Fit perfectly
Jack
Worcester
3 years ago
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Kickspace heater temp. sensor

Exact match to original and worked well.
Mike
Brewster New York
4 years ago
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Great Service

Online chat and I was shipped a replacement part immediately- great customer service
Jim C
Wisconsin
4 years ago
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Thermostat sensor for K42 Twin-Flo III toe kick heater

Price and next day delivery could not have been any better.
Joe M
Milford MI
5 years ago
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Direct replacement

The part was a direct replacement but unfortunately it did not fix my problem. Wanted to try the low cost aqua stat before investing in the motor assembly.
Tom
Poughkeepsie NY
5 years ago
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I would buy this product again

Easy installation. Waiting for cold weather to see if it works
Bob
New Jersey
5 years ago
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Arrived on time and in good condition

My order arrived on time and in good condition and works perfectly.
Jon
ME
8 years ago
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Product Q&A

1 Question
1 Question
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Q: What temp does the sensor activate

Asked by Eric 9 years ago

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Verified Author and ReplyVerified Reply- SupplyHouse Staff

The standard aquastat will activate the blower when the water temperature reaches above 120 deg. F.

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