Replacing an old mechanical or basic digital thermostat on a heat pump or single-stage furnace is one of the most common service calls. The T721 is a T700 platform non-programmable digital thermostat from Pro1 IAQ that handles a 2-heat/1-cool heat pump or a 1-heat/1-cool conventional system, with a 4 sq. in. display. HVAC techs and property managers like it for rentals where a simple hold-the-setpoint thermostat is all tenants need. Why HVAC techs pick it One model covers heat pumps (2H/1C) and conventional gas, oil or electric systems (1H/1C), including millivolt systems, per the manual. Runs on 2 AA batteries (included) or 18 to 30 VAC hardwire, with batteries as backup. Separate heating and cooling swing adjustable from 0.2° to 2.0°. Built-in 5 minute compressor delay protects the equipment after power interruptions. Non-programmable, so there is no schedule for occupants to misset. Specifications Spec Detail Brand Pro1 IAQ (listed under ALLTEMP) Model T721, T700 platform Stages 2H/1C heat pump or 1H/1C conventional Programming Non-programmable Display 4 sq. in. Control range 44°F to 90°F (7°C to 32°C) Swing Heat and cool, adjustable 0.2° to 2.0° Power 18-30 VAC Class 2 hardwire or 2 AA alkaline Operating ambient 0°C to 41°C, 90% RH non-condensing max Dimensions 4.7 in W x 4.4 in H x 0.8 in D Not compatible with Two-transformer systems; not a line-voltage thermostat Pro tip from the counter On battery-only installs, warn the occupant not to ignore the low-battery icon: per Pro1, after 21 more days the setpoints lock to 55°F heat / 85°F cool, and after day 63 the thermostat shuts the system off until batteries are replaced. Running the C (common) wire whenever one is available avoids a no-heat call in January. Best for: heat pump thermostat replacements, single-stage furnace and A/C systems, rental and multi-unit properties, HVAC service van stock We ship across Canada from Vaughan, ON. HVAC contractors can request trade pricing with a quote or call (905) 553-7171.
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