HONEYWELL THM5421R1021 EIM 24V 4H/2C RedLINK Thermostat Control Module

US $121.33
ApproximatelyS$ 157.87
Condition:
New
24 available
Breathe easy. Free shipping and returns.
Shipping:
Free Standard Shipping.
Located in: Dresher, PA, United States
Delivery:
Estimated between Thu, 13 Nov and Sat, 15 Nov to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days return. Seller pays for return shipping.
Coverage:
Read item description or contact seller for details. See all detailsSee all details on coverage
(Not eligible for eBay purchase protection programmes)

Shop with confidence

Top Rated Plus
Trusted seller, fast shipping, and easy returns. Learn more- Top Rated Plus - opens in a new window or tab
Seller assumes all responsibility for this listing.
eBay item number:146871749092
Last updated on Oct 20, 2025 00:52:31 SGTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
UPC
0085267328180
Category

About this product

Product Identifiers

Brand
Honeywell
MPN
THM5421R1021/U
UPC
0085267328180
eBay Product ID (ePID)
18016755900

Product Key Features

Compatible Product
Heat Pump, Ductless Mini Split System, Central Heating Radiator, Packaged/Rooftop Air Conditioner
Compatible Brand
Honeywell, Honeywell Home, For Honeywell, Packaged/Rooftop Air Conditioner
Color
Gray
Mounting
Wall-Mounted
Cool Stages
1
Wire Configuration
2-Wire
Voltage
24 V
Features
Wireless, Mini
Compatible Model
Certain Honeywell Home THM5421 models.
Material
Plastic
Smart Home Protocol
Proprietary

Dimensions

Item Weight
0.91

Item description from the seller

About this seller

Voomi Supply

99% positive feedback63K items sold

Joined Feb 2020
Usually responds within 24 hours
At Voomi Supply, we are proud to support contractors, service technicians, and DIY enthusiasts with one of the largest selections of HVAC, plumbing, and industrial products online. From hard-to-find ...
See more

Detailed Seller Ratings

Average for the last 12 months
Accurate description
4.8
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (13,742)

All ratingsselected
Positive
Neutral
Negative
  • r***u (90)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Item that was delivered did not match the description in the sellers eBay ad and would not fit my furnace. Seller admitted there was an inadvertent error in the listing and promptly approved a return for this item. My payment method was credited with the return within 1 day of seller's receipt of the item. This seller was certainly professional in their business conduct and deserves 5 stars.
  • r***i (236)- Feedback left by buyer.
    Past month
    Verified purchase
    The item was damaged during shipping. It was only wrapped in bubble wrap and no box. Reps were fast to respond (late evening response) and quickly made things right. Great sellers to work with. Highly recommend using them.
  • i***_ (16)- Feedback left by buyer.
    Past month
    Verified purchase
    A bit pricey, but unlike some other sites, this seller clearly posted the model number that told me this was exactly the replacement freezer flap for my Magic Chef small refrigerator. A bit over- packaged but no chance of damage in shipping! Arrived directly with notices along the way and is perfect. Would use this seller again.