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Showing 193–240 of 67509 resultsSorted by popularity

Single Phase Head Pressure Control

ICM Controls

SKU: ICM325A

Rated 5 out of 5
$171.79
ICM Controls ICM325A Single Phase Head Pressure Control quantity
2P / 40A / 24V Contactor

Packard

SKU: C240A

Rated 5.00 out of 5
$12.75
MSRP: $14.66
You save 15%
Packard C240A 2P / 40A / 24V Contactor quantity
Hardwire Smoke & Fire Alarm with 10-Year Battery Backup

Universal Security Instruments (USI)

SKU: USI/SM/HW10YR/P
$38.25
MSRP: $43.99
You save 15%
USI USI/SM/HW10YR/P Hardwired Photoelectric Smoke Alarm, 10-Year Battery Backup, Voice Alert quantity
AgION Anti-Microbial Replacement Humidifier Pad for HE Models

Honeywell Home

SKU: HC26E1004

Rated 4.86 out of 5
$20.39
Honeywell HC26E1004 AgION Anti-Microbial Humidifier Pad for HE Models quantity
Junction Box Adapter Plate for ecobee Thermostats

ecobee

SKU: ADAPTPLATEBX-02
$13.49
MSRP: $15.51
You save 13%
ecobee Junction Box Adapter Plate for SmartThermostat Pro, ecobee4 & ecobee3 lite | ADAPTPLATEBX-02 quantity
RedLINK 3.0 Indoor Sensor 2-Pack

Honeywell Home

SKU: C7189R3010-2
$99.36
Honeywell C7189R3010-2 RedLINK 3.0 Indoor Sensor 2-Pack, Wireless Temp/Humidity/Motion, ElitePRO & T10+ Pro Compatible quantity
Multi-Tap 24VAC, 50VA Transformer

Functional Devices

SKU: TR50VA009

$42.35Add to Cart for Savings

Functional Devices TR50VA009 Multi-Tap 24VAC, 50VA Transformer quantity
Replacement UV Lamp for UV2400U1000 / U5000

Resideo

SKU: UV2400XLAM1

Rated 5.00 out of 5
$90.84
Honeywell UV2400XLAM1 Replacement UV Lamp for UV2400U1000/U5000 quantity
FocusPRO 5000 1H/1C Thermostat

Resideo

SKU: TH5110D1022

Rated 5.00 out of 5
$107.33
Read more
ElitePRO S1200 White Smart Thermostat W/ Room Sensor (4H/2C Heat Pump & 3H/3C Conventional)

SKU: YTHX1200W5
$236.47
Honeywell YTHX1200W5 ElitePRO S1200 White Smart Thermostat W/ Room Sensor (4H/2C Heat Pump & 3H/3C Conventional) quantity
Digital Thermostat Modulating Zone One

iO HVAC Controls

SKU: Z-2000-T

Rated 5.00 out of 5

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Digital Humidistat with Outdoor Sensor

Resideo

SKU: H6062A1000

Rated 4.5 out of 5
$87.35
Honeywell H6062A1000 HumidiPRO Digital Humidistat with Outdoor Sensor quantity
Replacement reservoir accessory for MaxiBlue condensate pumps

Blue Diamond

SKU: C21-013
$99.75
Blue Diamond C21-013 Reservoir Accessory for MaxiBlue Condensate Pump quantity
50 VA, Multi mount (plate/panel) 120/208/240 VAC Transformer

Resideo

SKU: AT150F1022
$37.99
Honeywell AT150F1022 50VA Transformer, Plate and Panel Mount quantity
Universal Fractional HP Building Automation Starter

Franklin Control Systems

SKU: BAS-1P
$219.99
MSRP: $252.99
You save 15%
Franklin Control Systems BAS-1P Universal Building Automation Starter quantity
RD Series Retro Zone Damper

iO HVAC Controls

SKU: RD-XX
Price range: $146.09 through $165.16
Select options
This product has multiple variants. The options may be chosen on the product page
14 AWG 4C Stranded Metal Clad Mini Split Cable, 250ft Reel

Genesis

SKU: TW-14/4 (10750108)

Rated 5.00 out of 5
$610.25
MSRP: $701.79
You save 15%
Genesis TW-14/4 (10750108) Stranded SPINALCORD Mini Split Wire, 250ft Roll quantity
2H/1C Programmable Heat Pump Thermostat

White-Rodgers

SKU: 1F83H-21PR

$55.34Add to Cart for Savings

Emerson White-Rodgers 1F83H-21PR 2 Heat 1 Cool Heat Pump Programmable Thermostat quantity
Standard replacement humidifier pad for HE265, HE360 & HE365

Resideo

SKU: HC26A1008

Rated 4.75 out of 5
$11.21
Honeywell/Resideo HC26A1008 Standard Humidifier Pad for HE265, HE360, HE365 quantity
Non-Spring Return Actuator, Floating Point Control

Belimo

SKU: TMB24-3-T

$118.13Add to Cart for Savings

Belimo TMB24-3-T.1 Non-Spring Return Actuator, Floating Point Control quantity
3-Mode Surge Protective Device

Intermatic

SKU: AG3000
$69.99
MSRP: $98.38
You save 29%
Intermatic AG3000 3-Mode Surge Protective Device quantity
Dual Sensor Smoke and Fire Alarm with 10-Year Sealed Battery

BRK

SKU: SM310

Rated 5.00 out of 5
$49.99
BRK First Alert SM310 (1046767) Dual Sensor Smoke and Fire Alarm with 10-Year Sealed Battery quantity
Lennox OEM Control Board Replacement

ICM Controls

SKU: ICM2813

Rated 5.00 out of 5

Add to Cart for Savings

ICM Controls ICM2813 Lennox OEM Control Board Replacement quantity
ICM Controls ICM870-32A Soft Start

ICM Controls

SKU: ICM870-32A

Rated 5 out of 5

Add to Cart for Savings

ICM Controls ICM870-32A Soft Start quantity
Universal Water Heater Gas Valve, 1″ Insulation Tank, 4″ WC

Resideo

SKU: WT8840A1000

Rated 4.80 out of 5
$170.99
Honeywell Resideo WT8840A1000 Replacement Water Heater Gas Valve Control quantity
RedLINK Equipment Interface Module (EIM)

Resideo

SKU: THM5421R1021

Rated 5.00 out of 5
$91.55
Honeywell THM5421R1021 RedLINK Equipment Interface Module (EIM) quantity
7-Day/5-1-1 Programmable Thermostat, 2H/2C, 8 Sq In Display

Pro1 IAQ

SKU: T855
$121.50
MSRP: $205.98
You save 41%
PRO1 T855 Digital 7-Day/5-1-1 Programmable Thermostat, 2H/2C, 3H/2C Heat Pump quantity
Refrigeration Technologies RT100S Big Blu Microleak Detector (1qt) Spray Bottle

Viper

SKU: RT100S

$11.51Add to Cart for Savings

Refrigeration Technologies Viper RT100S Big Blu Microleak Detector (1qt) Spray Bottle quantity
RedLINK 3.0 indoor sensors for T10+ (2-Pack)

Resideo

SKU: C7189R3002-2

Rated 5 out of 5
$102.87
Read more
Heat Pump Riser, 6″, 2,000 lb Load, Recycled Polypropylene

DiversiTech

SKU: HPR-6
$4.29
MSRP: $4.93
You save 15%
DiversiTech HPR-6 Heat Pump Riser, 6", 2,000 lb Load, Recycled Polypropylene quantity
Control Panel 4 Zone 3H/2C with DATS and Transformer

Resideo

SKU: HZ432K
$374.99
Honeywell TrueZONE HZ432K 4-Zone Control Panel Kit, 3H/2C quantity
Universal Thermostat Guard with Clear Cover

White-Rodgers

SKU: F29-0198
$18.50
MSRP: $37.63
You save 51%
White-Rodgers F29-0198 Universal Thermostat Guard with Clear Cover quantity
TD Series Round Compatible Dampers

iO HVAC Controls

SKU: TD-XX

Rated 4.00 out of 5
Price range: $158.97 through $273.18
Select options
This product has multiple variants. The options may be chosen on the product page
Resideo CHW3610W8001 L1 Wi-Fi Water Leak Detector

Resideo

SKU: CHW3610W8001
$56.32
Resideo CHW3610W8001 L1 Wi-Fi Water Leak Detector (Single Pack) quantity
Water Heater Gas Combination Thermostat

White-Rodgers

SKU: 37E73A-903

Rated 4.62 out of 5
$122.99
MSRP: $223.01
You save 45%
White-Rodgers 37E73A-903 Water Heater Gas Combination Thermostat quantity
Blue Diamond MaxiBlue X87-721 230V Condensate Removal Pump With Reservoir

Blue Diamond

SKU: X87-721
$205.99
Read more
RedLINK Wireless Outdoor Sensor, 5 Year Battery

Resideo

SKU: C7089R1013

Rated 5 out of 5
$79.71
Honeywell C7089R1013 RedLINK Wireless Outdoor Sensor quantity
SUPER BOOST Hard Start Kit with 500% Torque

Supco

SKU: SPP6
$10.50
MSRP: $12.08
You save 15%
Supco SPP6 SUPER BOOST Hard Start Kit with 500% Torque quantity
72″ Snap-Fit Thermocouple, Stainless Steel Outer Jacket

Robertshaw

SKU: 1980-072
$12.59
MSRP: $37.11
You save 66%
Robertshaw 1980-072 - 72" Snap-Fit Thermocouple quantity
Whole-House Air Purifier, 20×25 MERV 13

Aprilaire

SKU: 2210

Rated 5.00 out of 5
$159.99
Read more
Universal Water Heater Gas Valve, 2″ Insulation Tank, 4″ WC

Resideo

SKU: WT8840A1500

Rated 4.56 out of 5
$192.27
Honeywell WT8840A1500 Bradford White Water Heater Gas Valve Replacement quantity
Replacement MERV 13 Air Filter for Whole Home Air Purifier

Aprilaire

SKU: 413

Rated 4.80 out of 5
$64.99
Aprilaire 413 MERV 13 Air Filter for Aprilaire Whole-House Air Purifiers quantity
CO Alarm, Plug-In + 2 AA Backup Batteries

Kidde

SKU: COP (21033777)
$34.97
MSRP: $40.22
You save 15%
Kidde Model COP CO Alarm, Plug-In + 2 AA Backup Batteries, UL 2034 quantity
ElitePRO S1100 Smart Thermostat, 5” Touchscreen In White (4H/2C Heat Pump & 3H/3C Conventional)

Honeywell Home

SKU: THX1100W3
$188.99
Honeywell THX1100W3 ElitePRO S1100 Smart Thermostat, 5” Touchscreen In White (4H/2C Heat Pump & 3H/3C Conventional) quantity
1/4″ and 5/16″ C-RHEX Cleanable Reversible Magnetic Driver

Malco

SKU: MSHXLC
$19.75
MSRP: $22.71
You save 15%
Malco MSHXLC 1/4in and 5/16in Reversible Magnetic 6in Hex Chuck Driver quantity
Bi-Directional Heat Pump Drier, 16 Cubic Inches

Supco

SKU: HP163S
$17.50
MSRP: $20.13
You save 15%
Supco HP163S Bi-Directional Heat Pump Drier, 16 Cubic Inches quantity
Universal Hard Start with CPT Fuse Wire

Mars

SKU: 12600

Rated 5.00 out of 5
$53.06
MSRP: $61.02
You save 15%
Mars TES5 Turbo Easy-Start Hard-Start Relay And Start Capacitor quantity
NEMA 4X Photoelectric Duct Smoke Detector, Weathertight

Air Products and Controls

SKU: RT-3000-P

Rated 5 out of 5
$197.81
MSRP: $227.48
You save 15%
Air Products and Controls RT-3000-P NEMA 4X Duct Smoke Detector quantity