$271.44
The ATA11U03 electronic thermostat provides single-stage, 2-fan speed selections, non-programmable
temperature control for 24 Vac water-source heat pump systems.
The ClimateMaster thermostat (manufacturer part ATA11U03) is a genuine OEM thermostat available at Cedars HVAC, your trusted source for heating, cooling, and refrigeration parts. We stock this thermostat for fast nationwide shipping direct from the distribution center, so contractors, facility managers, and homeowners can get the exact replacement they need without delay.
Other features of the Climatemaster ATA11U03 include: °F or °C temperature display, Backlight user select, Installer setup options that allow for customized applications, including dead band adjustment, temperature display offset, manual heat-cool only, keypad lockout, sensing on board or remote, maximum cycles per hour, fan speeds (2 or 1), setting minimum cooling temperature, and setting the maximum heating temperature, Zero temperature droop performance, Setpoints are permanently held in memory (no batteries used) and retained during power outages, Backplate wiring for easy installation, Input Power: 18 to 30 Vac, 50/60 Hz, Setpoint Range: 50°F to 90°F [10°C to 32°C], Note: User must maintain thermostat setting within proper unit operating temperature range (See specific unit(s) IOM for details), The default setpoint for heating is 68°F [20°C] and for cooling is 78°F [25.5°C]. Press the p or q keys to change the setting. To change between heat, cool, and auto settings, press the mode key until the desired setting appears, and the Maximum current for each output is 1 Amp, 3 Amp total.
This ClimateMaster thermostat is part of our Thermostats catalog. If you are sourcing thermostats for a fleet of equipment or a commercial install, contact us for volume pricing. For installation guidance, always refer to the manufacturer documentation and consult a licensed HVAC technician where required.
Most ClimateMaster thermostat orders ship within 5–7 business days direct from the distribution center. Standard ground shipping covers the continental United States, and expedited options are available at checkout. Returns are accepted within 30 days on unopened, uninstalled parts — see our return policy for full details. International shipping is available on request; contact our team for a quote.
Is this an OEM ClimateMaster part? Yes, the ClimateMaster thermostat we sell is a genuine ClimateMaster thermostat sourced through authorized channels. We do not substitute aftermarket parts unless specifically marked.
Will this thermostat fit my equipment? Compatibility depends on the model and revision of your existing equipment. If you need help confirming fitment for the ClimateMaster thermostat, email us at [email protected] with your unit model number and we will confirm before you order.
Can I get a contractor or wholesale discount? Yes. Cedars HVAC offers volume pricing for licensed HVAC contractors, property managers, and resellers. Request contractor pricing or call us to set up an account.
Explore more: Thermostats • All ClimateMaster parts • Browse all HVAC parts
| Weight | 1 lbs |
|---|---|
| Dimensions | 6 × 6 × 4 in |
| Brand | |
| Voltage | 24 |
| Description | Parts – OEM |
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