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Northwest Mechanical hydronic heating experts in Seattle, specialize in residential radiant heat utilizing Buderus boilers, Wirsbo PEX, Tekmar controls, Amtrol expansion tanks, Grundfos pumps, Danfoss radiator valves, and Runtal radiators. 
We work with DIY'ers, architects, and homeowners to develop heating solutions for each individual: for the DIY: an online store with Nuheat mats and Wirsbo parts, for the architect: design services and newsletter, for the homeowner: install projects, fire sprinkler systems, and boiler service.
reception@nwmechanical.com
24/7 Phone: (206) 267-4328
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tekmar Controls


What makes tekmar controls so special?

The technology available today allows us to fire the boiler and control or modulate the boiler water temperatures based on outdoor temperatures. This device is called an Outdoor Reset Control and becomes the 'brains' of the boiler system. The microprocessor has sensors attached to the vital components of the system and to the outside of the building, constantly processing all data to keep the system running at maximum efficiency depending on how cold it is outside. When it gets warmer outside, the boiler water gets cooler...as it gets colder outside, the boiler water gets hotter....The device is manufactured by tekmar and we use it on most installations.

This control brings sanity and savings to any hydronic system because it matches heat input to heat loss at any given moment. It also gives priority to recovering the tank of domestic hot water in the indirect-fired hot water heater. The tekmar control is part of every radiant floor system we install. The tekmar control strategy can save an additional 15% to 25% of the yearly energy costs of operating the boiler. No boiler system should be installed without it.




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