Honeywell Thermostat: 0°F to 100°F, 24V AC, 5 ft Capillary, 135 ohm Potentiometer
The Honeywell T991A1426 is a proportional temperature control (VAV thermostat) with a 0°F to 100°F range, operating on 24V AC input and a 135 ohm potentiometer output signal. It features a 5 ft capillary and supports…
SKU 3G-OTH-67701
Need installation or engineering help?
Ask a question
Product Description
The Honeywell T991A1426 is a proportional temperature control (VAV thermostat) with a 0°F to 100°F range, operating on 24V AC input and a 135 ohm potentiometer output signal. It features a 5 ft capillary and supports horizontal or vertical mounting orientation.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the Honeywell T991A1426 VAV thermostat used for?
The Honeywell T991A1426 is a proportional temperature control used in variable air volume (VAV) systems to regulate temperature in commercial HVAC applications. It provides a 135 ohm potentiometer output signal based on sensed temperature changes, enabling precise damper or valve modulation.
What are the specifications of the Honeywell T991A1426?
The Honeywell T991A1426 operates on 24V AC input and outputs a 135 ohm potentiometer signal. It has a temperature range of 0°F to 100°F, a 5 ft capillary, and supports horizontal or vertical mounting orientation. The manufacturer part number is T991A1426.
Where to buy the Honeywell T991A1426 worldwide?
3G Electric supplies the Honeywell T991A1426 VAV thermostat worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this proportional temperature control.
How to install the Honeywell T991A1426 VAV thermostat?
Mount the Honeywell T991A1426 in a horizontal or vertical orientation as needed. Connect 24V AC input power and wire the 135 ohm potentiometer output to the controller. Ensure the 5 ft capillary is properly routed to sense duct or room temperature. Follow standard HVAC wiring practices.
Used in
Common applications for HoneywellHoneywell Products
3G Electric supplies Honeywell proportional temperature controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.



