Registration:                    8:00 – 8:30 am

Morning Session:             8:30 am – 12:30 pm

Lunch (On your own):       12:30 – 1:30 pm

Afternoon Session:           1:30 pm – 4:30 pm

Geothermal Heat Pumps and Indoor Thermal Comfort

   Understanding the refrigeration cycle

   The effect of air flow and insulation

   How comfort is measured

   Understanding efficiency

Understanding Earth Loop Systems

   Architecture of closed loop systems

   Horizontal ground loops

   Vertical ground loops

   Applications for open loop systems

      • Single well

      • Two-well systems

   Evaluating topography

   Measuring soil conductivity

   Environments for ground-loop systems:
     beneath yards, fields, parking lots, and buildings

Designing Geothermal Systems

   Determining loop type

   Making heat loss calculations

   Sizing the unit

   Sizing the loop

   Alternate geothermal designs

Choosing System Components

   Basic components of geothermal heat pump systems:
     Pump, compressor, heat exchanger

   Forced air systems

   Hydronic systems

   Domestic hot water options

Evaluating the Benefits of Geothermal Systems

   Incentives to use geothermal

   Measuring performance

      • Calculating savings and cost

      • Environmental benefits

      • Tax credits, incentives and rebates

Maintaining Geothermal Systems

   Performing routine maintenance


     6.5 HSW Contact Hours (PDHs)
     6.5 AIA HSW Learning Units

Professional Engineers
     6.5 Contact Hours (PDHs)

     Non-Mandatory Cont. Ed.

Continuing Education Credit Information

This seminar is open to the public and offers up to 6.5 HSW continuing education hours to architects and 6.5 PDHs to professional engineers in most states, including Nebraska and surrounding states. Educators and courses are not subject to preapproval in Nebraska.

This seminar is approved by the American Institute of Architects for 6.5 HSW Learning Units (Sponsor No. J885) and the Building Performance Institute for 3.25 CEUs.

HalfMoon Education is an approved continuing education sponsor for architects in Florida and is deemed an approved sponsor in New York. HalfMoon Education is an approved continuing education sponsor for engineers in Florida, Indiana, Louisiana, Maryland, New Jersey, New York (NYSED Sponsor No. 35), North Carolina, and North Dakota.

This seminar also offers a continuing education opportunity to construction contractors, but it has been submitted to any state contractor licensing board for continuing education credit.

Attendance will be monitored and attendance certificates will be available after the seminar for most individuals who complete the entire event. Attendance certificates not available at the seminar will be mailed to participants within fifteen business days.


Duane Crawford

Dakota Geo Consultant, LLC
Mr. Crawford is a consultant and contractor specializing in drilling, geothermal batteries, geothermal design and geothermal development. He has 40 years of experience in drilling, and over 23 years of experience in geothermal design and construction. He has designed and constructed horizontal and vertical ground heat exchangers, and his alternative designs include pond loop, single well pump-and-dump, thermal battery, and solar-assisted ground source heat pump configurations. He has designed and constructed geothermal systems in South Dakota, Nebraska, Iowa, Kansas, Missouri, Canada, and Grand Cayman in the Cayman Islands. Mr. Crawford has worked in the water development industry since 1976.