At this page you find instruments for heating, ventilation, air conditioning and refrigeration applications. For monitoring of heat exchangers (ice prevention) we deliver specific frost protection thermostats with capillary length 1.5 / 3 / 6 and 12 meter, multistage thermostats for high/low alarm, single stage room and duct thermostats and humidity switches. For air conditioning and refrigeration installations our programme includes various sensors for (differential)pressure, temperature (Pt100,Pt1000 etc.) and humidity.

Our Flow Products for all kinds of cooling circuits in an industrial or HVAC application like:

  • Heat Pumps (Primary Heating Circuit)
  • Heating Systems
  • Air Conditioning and Chillers
  • Water Measurement in Facility Managements
  • Sprinkler Systems
  • SmartHome Leak Detection
  • Server and Generator Cooling
  • Tooling Machines (Laser, Welding, Induction Heating etc.)
  • District Heating Stations

HVAC instruments:


We are Marktechnical


  • Wide range of instruments, spare parts on stock
  • Fast delivery times 24/7
  • Field service
  • Experience team of professionals
  • Close cooperation with our customers
  • Well equiped workshop and test possibilities
  • Comprehensive list of brands
  • Personal and customized advice
  • ISO9001 certified