Residential Hot Water Boilers and Hydronic Technology

I.     Course Prefix/Number: AHR 206

       Course Name: Residential Hot Water Boilers and Hydronic Technology

       Credits: 3 (3 lecture; 0 lab)

II.    Prerequisite

AHR 101 and AHR 102 or consent of department chair.

III.   Course (Catalog) Description

Course covers conventional and modern residential hydronics systems. Topic focus on "Near boiler" piping, accessories and zoning operations; proper sizing of heat emitting components, baseboards and piping.

IV.   Learning Objectives

Students will learn basic hydronic systems for residential and light commercial buildings.  Condensing and non-condensing boilers, hydronic heat pumps, piping, fittings and valves, fluid flow in hydronic systems, circulating pumps, single and multi-zone systems are cov-ered in this class.  Controls and control systems are covered.  Students learn trouble shoot-ing in classroom.  During lab the students design and build a miniature heating system.

V.    Academic Integrity and Student Conduct

Students and employees at Oakton Community College are required to demonstrate academic integrity and follow Oakton's Code of Academic Conduct. This code prohibits:

• cheating,
• plagiarism (turning in work not written by you, or lacking proper citation),
• falsification and fabrication (lying or distorting the truth),
• helping others to cheat,
• unauthorized changes on official documents,
• pretending to be someone else or having someone else pretend to be you,
• making or accepting bribes, special favors, or threats, and
• any other behavior that violates academic integrity.

There are serious consequences to violations of the academic integrity policy. Oakton's policies and procedures provide students a fair hearing if a complaint is made against you. If you are found to have violated the policy, the minimum penalty is failure on the assignment and, a disciplinary record will be established and kept on file in the office of the Vice President for Student Affairs for a period of 3 years.

Please review the Code of Academic Conduct and the Code of Student Conduct, both located online at

VI.   Sequence of Topics

Week 1    Fundamental Concepts
Week 2    Hydronic heat sources
Week 3    Combustion air, power venting and boiler heating capacities.
Week 4    Modular boiler systems, electric thermal storage systems, Hydronic heat pumps and system design considerations.
Week 5    Piping, fittings and valves.
Week 6    Fluid flow in piping, fluid mechanics, analyzing fluid flow, Hydrontric resis-tance of fitting, valves and open devices and the system resistance curve.
Week 7    Fluid flow in piping series and parallel hydrantic resistances, zoning and pipe sizing considerations.
Week 8    Circulating pumps, pumps for hydronic systems, pump placement, pump performance.
Week 9    Analytical methods for pump performance pump effi¬ciency, pump caritation and pump selection.
Week 10    Heat Emitters, finned tube baseboard, fan coils, thermal performance of fan cords.
Week 11    Panel radiators, radiant baseboard, system heat output curve and heat loss of Heat Emitters and copper piping.
Week 12    Controls and Control systems.
Week 13    Controls and control systems.
Week 14    Radiant floor heating.
Week 15    Distribution piping systems
Week 16    Expansion tanks, air removal and various heating systems.
Week 17    EXAM.

VII.  Methods of Instruction

Course may be taught as face-to-face, hybrid or online course.

VIII. Course Practices Required

IX.   Instructional Materials

Note: Current textbook information for each course and section is available on Oakton's Schedule of Classes.

Modern Hydronic Heating for Residential and Light Commercial Buildings by
John Siegerithaler, Detmar Publishers.

X.    Methods of Evaluating Student Progress

A.    Attendance
B.    Class policy on make-up exams, incomplete grade, late assignments, etc.
C.    Support services, e.g., Learning Lab, audio-visual

XI.   Other Course Information

If you have a documented learning, psychological, or physical disability you may be entitled to reasonable academic accommodations or services. To request accommodations or services, contact the Access and Disability Resource Center at the Des Plaines or Skokie campus. All students are expected to fulfill essential course requirements. The College will not waive any essential skill or requirement of a course or degree program.

Oakton Community College is committed to maintaining a campus environment emphasizing the dignity and worth of all members of the community, and complies with all federal and state Title IX requirements.

Resources and support for
  • pregnancy-related and parenting accommodations; and
  • victims of sexual misconduct
can be found at

Resources and support for LGBTQ+ students can be found at