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IEC motor efficiency graph
IEC motor efficiency graph

Permanent Magnet (PMAC) Motors & Electronically Commutated (ECM) Motors in Hydronic Systems (Part 2 of 3)

RL Deppmann March 10, 2025Pumps, Hydronic Design, Monday Morning Minutes

Can I and should I specify permanent magnet motors (PMAC) on my hydronic system pumps? The last R. L. Deppmann Monday Morning Minutes showed the …

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hydronic systemsHydronicsPumpsNorm Hall
IEC motor efficiency graph
IEC motor efficiency graph

Permanent Magnet (PMAC) Motors & Electronically Commutated (ECM) Motors in Hydronic Systems (Part 1)

RL Deppmann March 3, 2025Pumps, ECM, Monday Morning Minutes

Hydronic system pumps and other HVAC and plumbing equipment will often have a variety of motor choices to specify. One of the newer additions to …

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PumpsMotorsECMhydronic systemshydronic systemHydronics
aerco boilers
aerco boilers

Condensing Boiler Venting Material (Part 2)

RL Deppmann February 24, 2025Condensing, Venting, Venting, Monday Morning Minutes, Boilers

Proper venting of hydronic condensing boilers is critical for the safety of occupants and the successful operation of the heating plant. Part one of this two-part series …

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PVCCPVCHeat ExchangersBoilersCondensingNorm HallVENT
aerco boilers
aerco boilers

Condensing Boiler Venting Material (Part 1)

RL Deppmann February 17, 2025Boilers, Condensing, Venting, Monday Morning Minutes

Proper venting of hydronic condensing boilers is critical for the safety of occupants and the successful operation of the heating plant. The materials that may …

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BoilersCondensingHydronicsPipingNorm HallVENThydronic systems
turndown
turndown

The Importance of Turndown Ratio in Condensing Boilers & Water Heaters

RL Deppmann February 10, 2025Monday Morning Minutes, Boilers, Condensing, Efficiency

Turndown was defined in Part 1 of this short series. In general, hydronic water tube boilers have a lower possible turndown ratio than fire tube …

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BoilersCondensingefficiencymonday morning minutes
Weight Scale
Weight Scale

Commercial Gas Fired Water Heaters – Cost of Ownership

RL Deppmann February 3, 2025Water Heaters, Gas Fired, Condensing, Selection, Selection, Monday Morning Minutes

  When you’re researching water heaters, you first ensure that the product meets your needs technically (flow, heat input or source, space requirements, and recovery …

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Selectionmonday morning minutesgas firedCondensingWater Heaters
Who will win the battle?
Who will win the battle?

Commercial Gas Fired Water Heaters – The Battle of Efficiency Between Tankless & Storage

RL Deppmann January 27, 2025Tankless, Storage, Condensing, Selection, Monday Morning Minutes, Water Heaters, Gas Fired

Tankless, sometimes called instantaneous, and storage water heaters have been utilized in commercial and institutional buildings for a long time. The overwhelming majority of these …

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monday morning minutesgas firedCondensingtanklessWater HeatersstorageSelection
Gas fired commercial water heaters tank
Gas fired commercial water heaters tank

Commercial Gas Fired Water Heaters – Materials of Construction

RL Deppmann January 20, 2025Condensing, Selection, Monday Morning Minutes, Water Heaters, Gas Fired, Tankless, Storage

Gas fired commercial water heaters come in a variety of materials of construction. Most available offerings fall into three categories. What are these materials and …

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gas firedCondensingtanklessWater HeatersstorageSelectionmonday morning minutes
Aerco Benchmark Condensed Boiler
Aerco Benchmark Condensed Boiler

Commercial Gas Fired Water Heater Types

RL Deppmann January 13, 2025Water Heaters, Gas Fired, Tankless, Storage, Condensing, Selection, Monday Morning Minutes

In our world, a certain style of water heater may be referred to with many different names. Over the next few weeks, the R. L. …

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Water HeatersstorageSelectionmonday morning minutesgas firedCondensingtankless

Happy New Year from R.L. Deppmann

RL Deppmann December 30, 2024Monday Morning Minutes

Happy New Year from everyone at R.L. Deppmann! We look forward to continuing to serve you in 2025 and wish you a joyful and prosperous …

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  • Products
    • Overview
    • Pumps and Accessories
    • Boilers and Water Heaters
      • Water Heater Stock
      • Boiler Stock
    • Hydronic Systems
    • Plumbing Systems
    • Steam and Condensate
    • Variable Frequency Drives (VFDs)
    • Glycol Solutions
    • Snowmelt Designs
  • System Design
    • Overview
    • Project Gallery
    • Selection and Design Tools
  • Water Solutions
  • Contractors
  • Service & Parts
    • Overview
    • Startup and Warranty
    • Parts
    • Service and Maintenance
  • Education
    • Overview
    • Basic Hydronic Blog Articles
    • Training Opportunities
    • Factory Classes
  • About RLD
    • Overview
    • Team Deppmann
    • R.L. Deppmann Locations
    • Careers
    • Community Engagement
    • Press and News