Resources

Burner turndown and efficiency are often discussed together, but they describe different aspects of burner and heating system performance. Turndown is the ratio of a burner’s highest firing rate to its lowest. This is often limited by the burner’s ability to have...

  A make-up air (MUA) unit is an HVAC device that brings in outdoor air to replace indoor air removed from a building by exhaust fans, kitchen hoods, paint booths, or other ventilation equipment. In simple terms, if air is pulled out of a building, new air must...