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Wireless Pneumatic Thermostat


Do you have pneumatic thermostats?


“Go from Pneumatic to DDC in 20 minutes” Legacy pneumatic thermostats are manual devices that are hard to maintain, waste energy, and negatively impact comfort. 

Direct Digital Control (DDC) retrofit projects are difficult, disrupt occupants and cost $2,000 – $3,000 per thermostat thermostat with long paybacks.

The Wireless Pneumatic Thermostat (WPT) offers the same benefits as DDC thermostats but can be installed in minutes for a fraction of the cost with a fast payback.
  • 2-3 year payback
  • 20-30% energy savings
  • Easier and faster maintenance
  • Improved occupant comfort
  • 20-60% fewer hot/cold calls
  • LEED points
  • Auto-demand response and energy efficiency utility incentives
Key Features 
  • LoRa Wireless Architecture and Cyber Security
  • BACnet/IP interface for integration with Building Management Systems
  • Typically 3-5 years of battery life
  • Replaces any legacy pneumatic thermostat, e.g. two pipe, single pipe, direct acting, reverse acting, summer/winter, etc.
  • Optional deadband capabilities (separate heating and cooling setpoints)
  • Optional relative humidity (RH) sensor
  • Automatic self-calibration
  • Remote wireless setpoint control
  • Trend data
  • Alarm notification of excursions

HVAC Control Strategies Enabled by the WPT System

  • Programmable temperature setbacks (occupied/unoccupied) with occupancy override
  • Setpoint strategy:
    • Zone-level resets
    • Programmable limits (i.e. specified range for occupant control)
    • Deadband setpoint control (i.e. separate heating and cooling setpoints)
  • Automated diagnostics for ongoing commissioning through SMARTPneumatics
  • Optimal start/stop
  • Supply air temperature reset
  • Duct static pressure reset
  • Pre-cooling
  • Auto-demand response


  • Projects deployed since 2021 use LoRaWAN, which is a secure 900 MHz wireless protocol in wide use. The LoRa wireless reaches ~150 feet in radius from the gateway and eliminates the need for repeaters. Our projects are now even easier and more cost effective.
  • Projects deployed before 2021 used the 2.4 GHz Wireless USB protocol. This legacy wireless will be supported and replacement parts will be available indefinitely. 

WPT Case Studies    l    WPT Video Testimonials    l    WPT Clients    l   WPT Awards

Actual Pneumatic-to-DDC Retrofit in Under 10 Minutes

(It’s not just a slogan!)

Actual WPT Retrofit in Fast Motion (video is 84 seconds)

 Product Briefs/Submittals

 Instructions for Building Occupants

Installation Manuals 

Note that the materials below do not contain passwords. If you need passwords, please contact Cypress Envirosystems at

LoRa Wireless Pneumatic Thermostat

2.4 GHz Wireless Pneumatic Thermostat (legacy wireless)

O&M and Integration

How-To Videos

Installing the WPT

How to configure the LoRa Wireless Pneumatic Thermostat, GBC, and Gateway


Run the One Click Commissioning Tool (GBC Admin Tool)

How to change the battery on the LoRaWAN Wireless Pneumatic Thermostat

Backup Database with Admin Tool

Download Daily Performance Log for SMARTPneumatics

Setting Up Schedules in Green Box Controller

Calibrating the WPT

Calibrating the Summer/Winter Wireless Pneumatic Thermostat

Stored WPT Calibration Point

WPT Diagnostic Menu

Occupancy Override

Force Discover Command

General Overview (narrated by Tony Raimondo)


WSTM Payback Calculator2 (years)

WSTM Installed Cost3:
$1000 per unit

Your Steam Cost:
per 1,000 lbs.

Inspection Frequency4:

Inspection Costs5:
per trap

Facility Uptime:

Failure Rate6:
per year

1. Orifice diameter should not be confused with pipe diameter. Consult the steam trap manufacturer if orifice size is not known.
2. Calculations are theoretical estimates and actual results will vary. Payback calculation includes avoided lost steam and inspection labor. Benefits from avoided damage resulting from blocked traps are not included in model. The formula used for steam loss in this model is: L=24.24*Pa*D2. Where L=pounds/hour, Pa=Pgauge + Patm , D=orifice diameter.
3. Actual WSTM installed cost will vary based on volume and integrator.
4. Refers to the manual inspections of steam traps that are currently being done at the facility. The frequency determines the potential avoided failure time when using the WSTM.
5. The frequency and cost of inspection determine the labor savings enabled by the WSTM.
6. The failure rate per year should be based on historical data from the facility. 15-20% failure rates per year are typical. In unmaintained facilities, the failure rate can be much higher: