NOTICE: Due to planned maintenance, pricing and ordering functions will be unavailable from late Friday evening, February 20 to Saturday morning, February 21.

NOTICE: Website performance may be impacted by scheduled maintenance starting at 5:00 PM CST on 1/23/26

Serving the Midwest in HVAC, Plumbing, PVF, Well & Septic and Waterworks.

Site Search

{0} items in cart

loading content

Refine Results

: ALLIED™(14)
Braeburn®(1)
Ecobee(1)
Honeywell Home(40)
ICP™ - Comfortmaker® / Tempstar®(4)
: Domestic(8)
Import(19)
: Aquastat® Temperature Controller(8)
Blue™ Digital Thermostat(2)
T Series Thermostats(2)
L7224 and L7248 Oil and Electric Boiler(2)
THX9000 Series Thermostat(2)
: Brown(2)
Clear Glass(3)
Gray(8)
Premier White®(2)
Beige(1)
: Square to 2 Screw Hole Mounting(1)
5 to 95% RH Non-Condensing(1)
600 psi, 120/240 VAC(1)
0.38 in WC(1)
0.75 in WC(1)

Thermostat Accessories

80 products

Sort

View

Per Page

content loaded

ÿÿÿ

EB-PEK2-01 Ecobee Thermostat Power Extender Kit

Item #ECBEBPEK201

MFG #EB-PEK2-01

Compare

Resideo 121371B/U Well Assembly, For Use w/ Aquastat® Temperature Controller, Copper

Resideo 121371B/U Well Assembly, For Use w/ Aquastat® Temperature Controller, Copper

Item #HON121371B

MFG #121371B/U

Compare

Resideo 121371A/U Copper 1/2" NPT Well Assembly w/ 3" Insertion Depth

Resideo 121371A/U Copper 1/2" NPT Well Assembly w/ 3" Insertion Depth

Item #HON121371A

MFG #121371A/U

Compare

Honeywell THP9045A1023/U Wire Saver

Honeywell THP9045A1023/U Wire Saver

Item #HONTHP9045A1023

MFG #THP9045A1023/U

Compare

Pro1® R250S Wired Outdoor Or Slab Sensor

Pro1® R250S Wired Outdoor Or Slab Sensor

Item #PROR250S

MFG #R250S

Compare

Resideo 121371AA/U Well Clamp Assembly, For Use w/ L7224A, L7224C and L7248A, L7248C, L7248L Oil and Electric Boiler

Resideo 121371AA/U Well Clamp Assembly, For Use w/ L7224A, L7224C and L7248A, L7248C, L7248L Oil and Electric Boiler

Item #HON121371AAU

MFG #121371AA/U

Compare

Honeywell 112626AA/U Well Assembly

Honeywell 112626AA/U Well Assembly

Item #HON112626AAU

MFG #112626AA/U

Compare

Honeywell 50001464-001/B Sensor Assembly

Honeywell 50001464-001/B Sensor Assembly

Item #HON50001464001B

MFG #50001464-001/B

Compare

Honeywell 50022893-001/U Cover Plate, Premier White®

Honeywell 50022893-001/U Cover Plate, Premier White®

Item #HON50022893001U

MFG #50022893-001/U

Compare

First Mobile presents FirstSupply.com in a tile-based menu on your phone!

First InStock is our scannable label program makes it easy to stock your shop with First Supply!