Spam: If you think your submission was unfairly caught in the spam filter, message us right away using the " message the moderators" option below so we can quickly remedy it. R/airconditioners (window units, wall shakers and all related equipment) R/kitchensuppression (for commercial range hood/restaurant fire suppression) R/airbalance (for Test, Adjust and Balance professionals) Go / No Go result no batteries required magnetic back for job-site convenience 24VAC indicating light short circuit protection. R/refrigeration (commercial refrigeration stuff) Since cfm, rpm and torque are all related, the basic prinicples are the same. There are three types of ECM motors: constant cfm, constant rpm, and constant torque. R/ProHVACR (questions about owning or operating a HVAC company) What is an ECM Motor ECM stands for an electronically commutated motor which basically means a motor that uses electronic controls to vary its speed. R/askanelectrician (for basic electrical questions) r/HVACAdvice (for Homeowners or others looking for HVAC advice, quote reviews and general questions from outside the trade.)
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