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  Tekmar tekmarNet® - Two Stage Heat, One Stage Cool, One Fan Programmable Thermostat
Tekmar tekmarNet® - Two Stage Heat, One Stage Cool, One Fan Programmable Thermostat
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Tekmar tekmarNet® - Two Stage Heat, One Stage Cool, One Fan Programmable Thermostat

The tekmarNet® Thermostat 553 is a communicating touchscreen thermostat designed to operate two heating stages, one cooling stage, a fan and relative humidity. The heating stages can be hydronic, forced air or a single stage heat pump. The cooling stage is either an air conditioner or heat pump. There are two auxiliary sensor inputs available to measure room, floor, outdoor, coil or duct temperature. The optional floor sensor allows precise heating of radiant floors by controlling the floor temperature and maintaining the desired room air temperature. Relative humidity level can be measured and controlled using the built-in humidity sensor. The large touchscreen allows you to easily adjust 7-day programmable schedules and room temperature to optimize comfort and energy savings. The 553 can connect to tekmarNet® controls using two or four wires or it can operate as a stand-alone device.


  • 2 Auxiliary Sensor Inputs
  • Air Group Master or Member
  • Auto Heating Cycle
  • Away Scene Key
  • Backlight
  • Daylight Savings Time
  • Exercising
  • Freeze Protection
  • Heat / Cool Priority
  • Network Schedule Master or Member
  • Optimum Start
  • Outdoor & Floor Temperature Display
  • Programmable Schedule
  • Radiant Floor Heating & Cooling
  • Relative Humidity Control
  • Room Temperature Limiting
  • Scenes
  • Temporary Hold
  • Touchscreen Technology
  • Warm Weather Shut Down
  • Zone Post Purge
  • Zone Synchronization
  • tekmarNet® Communication Compatible


Control Microprocessor control. This is not a safety (limit) control
Packaged weight 0.75 lb. (340 g)
Dimensions 5" H x 3-1/4" W x 15/16" D (127 x 82 x 23 mm)
Enclosure White ABS / PC plastic, NEMA type 1
Approvals Meets Class B: ICES & FCC Part 15
Ambient conditions Indoor use only, 32 to 122ºF (0 to 50ºC), RH ≤90% non-condensing
Environmental Compatible with chlorinated swimming pool environments. Do not use in presence of ammonia (animal barns), methanol, ethanol, acetone.
Power supply 24 V ±10%, 60 Hz, 1.8 VA standby, NEC / CEC Class 2
Relays 24 V (ac 2 A
Humidity Sensor 0 to 90% +/-3% RH
Temperature Sensor NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892
-Included None
-Optional tekmar type # 070, 071, 072, 073, 076, 077, 078, 079, 082, 083, 084
Warranty Limited 3 Year Warranty

Current Literature

Product Submittal

Apr 2013 - Present


Installation & Operation Manual

Apr 2013 - Present


Job Record

Aug 2013 - Present


Quick Setup Guide

Apr 2013 - Present


User Manual

Apr 2013 - Present


Part Number: 553

2 +$286.67

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