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Showing 97–144 of 64239 resultsSorted by popularity

Outdoor temperature sensor for T-32-P and UT32 thermostats

iO HVAC Controls

SKU: T-OTS

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Programmable Thermostat without Hinged Cover, 1H/1C

Braeburn

SKU: 2020NC
$38.75
Read more
Universal 4H/2C, Programmable Thermostat

White-Rodgers

SKU: 1F85U-42PR

Rated 4.00 out of 5
$80.48
White-Rodgers 1F85U-42PR Universal Programmable Thermostat, 4H/2C quantity
40VA Transformer 120V Primary Universal Mount

Resideo

SKU: AT140A1000
$15.82
Honeywell AT140A1000 40VA General-Purpose Transformer, 24VAC Circuits quantity
Replacement MERV 11 Air Filter for Air Cleaners

Aprilaire

SKU: 310

Rated 4.83 out of 5
$60.99
AprilAire 310 20x20x4 MERV 11 Air Filter For 1310, 2310, 3310, and 4300 Whole-House Air Purifiers quantity
Ultra-Quiet Ductless Undermount Condensate Pump, 21 dB, Built-In Safety Switch

Asurity

SKU: QUIETMINI-M

Rated 5.00 out of 5
$130.99
MSRP: $150.64
You save 15%
Asurity QUIETMINI-M Ultra-Quiet Ductless Undermount Condensate Pump, 21 dB, Built-In Safety Switch quantity
MERV 11 Media Air Cleaner – 20×20 – 4 inch

Resideo

SKU: F100F2020
$108.99
MSRP: $162.01
You save 33%
Honeywell Home / Resideo F100F2020 20 x 20 MERV 11 Media Air Cleaner quantity
Wall Plate for Sensi Thermostats

White-Rodgers

SKU: F61-2663

Rated 5.00 out of 5
$5.51
MSRP: $11.42
You save 52%
White-Rodgers F61-2663 Wall Plate for Sensi Thermostats quantity
Conventional Photoelectric Duct Smoke Detector

Air Products and Controls

SKU: SL-2000-P
$120.99
MSRP: $149.49
You save 19%
APC SL-2000-P Photoelectric Duct Smoke Detector quantity
3-in-1 Smoke, Fire & Carbon Monoxide Alarm with PLUS Sensing

Universal Security Instruments (USI)

SKU: AMIC3511SB
$51.99
MSRP: $59.79
You save 15%
USI AMIC3511SB 3-in-1 Sensing PLUS Smoke, Fire and CO Alarm quantity
Non-Programmable TRIAC Line Volt Thermostat

Honeywell Home

SKU: RLV3120A1005

Rated 5.00 out of 5
$26.96
MSRP: $31.00
You save 13%
Honeywell RLV3120A1005 Non-Programmable TRIAC Line Volt Thermostat quantity
Remote Hardwired Indoor Temperature Sensor

Resideo

SKU: C7189U1005

Rated 5 out of 5
$42.91
Honeywell C7189U1005 Hardwired Indoor Remote Sensor quantity
1/4″ and 5/16″ Reversible Hex Driver

Malco

SKU: MSHC
$6.23
MSRP: $7.16
You save 15%
Malco MSHC 1/4in and 5/16in Reversible Magnetic 2in Hex Chuck Driver quantity
FocusPRO S200 1H/1C Smart WiFi Thermostat

Resideo

SKU: TH2110WF4008

Rated 5.00 out of 5
$70.99
Honeywell TH2110WF4008 FocusPRO S200 Smart Thermostat quantity
VC Floating Actuator, 24 VAC

Honeywell Home

SKU: VC6930ZZ32
$79.43
Honeywell VC6930ZZ32 VC Floating Actuator, SP3T (tri-state) Floating, 24 VAC quantity
Nu-Calgon 4050-11 EasySeal Ultimate LS/UV Dye (Single)

Nu-Calgon

SKU: 4050-11
$65.99
MSRP: $75.89
You save 15%
Nu-Calgon 4050-11 EasySeal Ultimate LS/UV Dye (Single) quantity
ICM Controls ICM870-16A Soft Start

ICM Controls

SKU: ICM870-16A

Rated 5.00 out of 5

Add to Cart for Savings

ICM Controls ICM870-16A Soft Start quantity
Round Carrier/Bryant Compatible Dampers

iO HVAC Controls

SKU: CD-XX
Price range: $158.97 through $273.18
Select options
This product has multiple variants. The options may be chosen on the product page
Smart Lite Pro Thermostat with WiFi

ecobee

SKU: EB-STATE3LTP-02

Rated 4.50 out of 5
$149.99
Read more
Digital Non-Programmable Thermostat, 2H/1C

Braeburn

SKU: 1220NC
$41.50
Read more
Replacement Plastic Door with Seal for Aprilaire 2201

Aprilaire

SKU: 4822

Rated 4.96 out of 5
$83.99
MSRP: $96.59
You save 15%
Aprilaire 4822 Replacement Plastic Door with Seal for Aprilaire 2200 quantity
RSH-50 Surge Protective Device (SPD) for Single-Phase

RectorSeal

SKU: 96415

Rated 5.00 out of 5
$106.02
RectorSeal 96415 RSH-50 Surge Protective Device (SPD) for Single-Phase quantity
Wet Switch Flood Detector, 24 VAC, 2 Amp, Secondary Drain Pan

Asurity

SKU: WS-1
$68.75
MSRP: $79.06
You save 15%
Asurity WS-1 Wet Switch Flood Detector, 24 VAC, 2 Amp, Secondary Drain Pan quantity
Multi-purpose Surge Protective Device

Ditek

SKU: DTK-120/240CM+
$55.99
MSRP: $64.39
You save 15%
Ditek DTK-120/240CM+ HVAC Surge Protection Kit quantity
Mersen Split Phase 3-Wire Surge-Trap Protective Device

Robertshaw

SKU: STXH240S05
$61.25
MSRP: $99.10
You save 38%
Robertshaw STXH240S05 Mersen Split Phase 3-Wire Surge-Trap Surge Protection Device quantity
POPUP Media Air Filter, Compact Design

Resideo

SKU: POPUPXXXX

Rated 4.92 out of 5
Price range: $41.99 through $44.85
Select options
This product has multiple variants. The options may be chosen on the product page
Discharge Air Sensor for iO Zone Panels

iO HVAC Controls

SKU: ZPA-DTS

$20.28Add to Cart for Savings

iO HVAC Controls ZPA-DTS Discharge Air Sensor for All iO Zone Panels quantity
18 AWG 8C Solid Plenum Thermostat Cable, 250ft Reel

Genesis

SKU: TWP-18/8

Rated 5.00 out of 5
$159.99
MSRP: $183.99
You save 15%
Genesis TWP-18/8 (47660312) Plenum-Rated Thermostat Wire in 250ft Roll quantity
Universal Programmable Heat Pump Thermostat

Aprilaire

SKU: 8466

Rated 5.00 out of 5
$99.48
MSRP: $114.40
You save 15%
Aprilaire 8466 Universal Programmable Heat Pump Thermostat quantity
Universal 2H/2C, Non-Programmable Thermostat

White-Rodgers

SKU: 1F85U-22NP

Rated 5.00 out of 5

$60.47Add to Cart for Savings

White-Rodgers 1F85U-22NP Universal Non-Programmable Thermostat, 2H/2C quantity
TrueDRY Replacement Filter for DR90, DR120

Resideo

SKU: 50070171-002

Rated 4.88 out of 5
$33.79
Honeywell 50070171-002 TrueDRY Replacement Filter for DR90 and DR120 quantity
3-Zone Multi-Stage Heat / Cool Zone Control Panel with ESP

iO HVAC Controls

SKU: ZP3-HCMS-ESP

$364.18Add to Cart for Savings

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3-Zone 2H/2C Control Panel Kit with ESP

iO HVAC Controls

SKU: ZP3-HCMS-ESP-KIT

$399.91Add to Cart for Savings

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12″ Round Automatic Damper, Normally Open

Resideo

SKU: ARD12TZ
$154.99
Honeywell ARD12TZ 12in Round Automatic TrueZONE Damper, Normally Open quantity
T10+ Thermostat Kit with Sensor

Resideo

SKU: YTHM1004R3001
$476.69
Read more
R454B Refrigerant Cylinder Tank – Reliable HVAC Refrigerant for Efficient Cooling

SKU: R454B

View Now
ElitePRO S1200 Smart Thermostat, Black

Honeywell Home

SKU: THX1200B6
$215.61
Honeywell Home THX1200B6 ElitePRO S1200 Smart Thermostat In Black quantity
Digital Non-Programmable Wall Thermostat (1 Heat/1 Cool)

Robertshaw

SKU: RS8110
$36.53
MSRP: $61.37
You save 40%
Robertshaw RS8110 Digital Non-Programmable Wall Thermostat, 1H/1C quantity
ICM Controls ICM493 Single-Phase Line Voltage Monitor

ICM Controls

SKU: ICM493

Rated 4.14 out of 5

Add to Cart for Savings

ICM Controls ICM493 Single-Phase Line Voltage Monitor quantity
Weatherproof SPDT, Line Voltageage Thermostat

PECO

SKU: TF115-001

Rated 5 out of 5
$46.99
MSRP: $54.04
You save 15%
PECO TF115-001 NEMA 4X, Weatherproof SPDT, Line Voltage Thermostat quantity
Replacement Air Filter for Whole-House Air Purifiers, 20x25x4

Aprilaire

SKU: 210
$60.99
Aprilaire 210 MERV 11 Air Filter for Whole-House Air Purifiers quantity
AprilAire 110 16x20x4 MERV 11 Air Filter For 1110 Whole-House Air Purifier

Aprilaire

SKU: 110

Rated 5.00 out of 5
$49.99
AprilAire 110 16x20x4 MERV 11 Air Filter For 1110 Whole-House Air Purifier quantity
RedLINK Enabled Wireless Indoor Air Sensor

Resideo

SKU: C7189R1004

Rated 5.00 out of 5
$60.07
Honeywell C7189R1004 RedLINK Wireless Indoor Sensor, Temp and Humidity quantity
Easy Leveler Adjustable Furnace Leg Leveling System

Energy Saving Products (ESP)

SKU: EL10

Rated 5.00 out of 5
$19.41
MSRP: $22.32
You save 13%
ESP EL10 Adjustable Furnace Leg Leveling System quantity
8″ Round TrueZONE Bypass Damper

Resideo

SKU: CPRD8
$101.30
Honeywell CPRD8 8in TrueZONE Round Bypass Damper quantity
Nu-Calgon 4127-75 Blackhawk Expanding Foam Coil Cleaner

Nu-Calgon

SKU: 4127-75
$9.50
MSRP: $10.93
You save 15%
Nu-Calgon 4127-75 Blackhawk Expanding Foam Coil Cleaner quantity
Low Profile Condensate Pump, 120V, 22 ft Lift, 4-3/8″ Tall

Asurity

SKU: CP-22LP

Rated 5.00 out of 5
$78.99
MSRP: $90.84
You save 15%
Asurity CP-22LP Low Profile Condensate Pump, 120V, 22 ft Lift, 4-3/8" Tall quantity
12:1 Ratio Handheld Infrared Laser Thermometer

MA-Line

SKU: MA-16550
$38.99
MSRP: $44.84
You save 13%
MA-Line MA-16550 12:1 Infrared Laser Thermometer quantity