Fully online technical training designed around real industry demand, so you can specialize at your own pace.
10/31/2026
Start Date
2 months
Duration
100
Total Hours
6 Modules
Program
Duration
Total Hours
Program
Start Date
ICTESS’s DHW Recirculation and Balancing Training Course offers specialized technical training in the design, calculation, and adjustment of domestic hot water (DHW) return systems. The program covers professional methodologies for sizing recirculation circuits, selecting balancing valves, and ensuring uniform temperatures throughout an installation.
You’ll learn the hydraulic calculations needed to determine return flows, circuit head losses, and recirculation pump sizing. The course includes working with thermostatic valves, hydraulic balancing techniques using proportional and compensated methods, adjusting temperatures in line with Legionella prevention guidance, and energy-saving strategies for recirculation systems. The program concludes with a Capstone Project where you’ll apply everything you’ve learned to the design of a complete recirculation system.
The DHW Recirculation and Balancing Training Course addresses a frequent technical need in residential buildings, hotels, and hospitals: making sure hot water reaches every point of use at the right temperature and in the shortest possible time. A poorly sized recirculation system leads to user complaints, wasted water, excessive energy consumption, and a risk of Legionella pneumophila growth.
The purpose of the course is to train professionals to correctly calculate return flows based on a building’s characteristics, select recirculation pumps using efficiency criteria, install and adjust balancing valves to distribute flow evenly, and verify that temperatures meet current Legionella prevention guidance such as ASHRAE Standard 188 and CDC Water Management Program recommendations.
The program includes commissioning and verification procedures using flow and temperature measurements at strategic points, along with preparing technical balancing reports. The course concludes with a Capstone Project where you’ll develop the complete calculation of a recirculation system for a real building.
The DHW Recirculation and Balancing Training Course qualifies you for specialized technical roles at plumbing installation companies, building maintenance services, installation engineering firms, and the technical departments of hotels, hospitals, and senior-living facilities. You’ll be prepared to work as a hydraulic balancing technician, DHW systems manager, specialized maintenance technician, or hydraulic systems efficiency consultant.
The program prepares you to carry out complete technical work: calculating return flows based on pipe lengths and diameters, sizing recirculation pumps using energy efficiency criteria, selecting and installing thermostatic and balancing valves, adjusting flow rates using proportional methods, and verifying temperatures at terminal points.
You’ll also gain skills to prepare hydraulic balancing reports, diagnose temperature distribution problems in existing installations, propose energy efficiency improvements for recirculation systems, and ensure compliance during Legionella prevention inspections.
Study from anywhere, with no commuting required. Balance your technical specialization with your current professional career.
Organize your study schedule around your own availability. Move through the modules at the pace that works for you and revisit topics whenever you need to.
Learn with examples from residential buildings, hotels, and hospitals. Calculations and procedures you can apply directly on the job.
Technical video lessons, up-to-date downloadable materials, forums with specialized instructors, and hands-on exercises.
With ICTESS, you’ll receive specialized technical training in DHW recirculation and balancing, focused on professional practice and built to help you master the competencies the hydraulic installations and building maintenance field demands. Every program is developed by industry experts and delivers a modern, practical, and flexible learning experience aligned with current market requirements. We’re committed to academic excellence, advanced educational technology, and consistent support that drives your professional growth.
What you'll achieve
Calculate DHW return flows applying hydraulic formulas based on pipe lengths, heat losses, and the building’s number of points of use.
Select and size recirculation pumps considering pump head, required flow, performance curves, and energy efficiency criteria under applicable DOE efficiency standards.
Install and adjust thermostatic and balancing valves using proportional and compensated methods to ensure uniform flow distribution across every branch.
Verify temperatures at terminal points per current Legionella prevention guidance, taking measurements with contact thermometers and preparing compliance reports.
Implement energy-saving strategies in recirculation systems through time scheduling, differential temperature control, and pipe insulation.
Recirculation systems for domestic hot water become necessary once the distance between the water heater and the farthest fixture exceeds the threshold set by applicable plumbing and energy code. Building and mechanical codes establish specific design requirements and minimum temperatures that must be met to ensure occupant comfort and prevent public health risk from Legionella.
Shortage of specialized professionals: Hydraulic balancing of DHW installations requires specific calculation knowledge and adjustment procedures that basic plumbing training doesn’t cover. Many installations run unbalanced for years, creating unnecessary energy consumption and user complaints that a correct technical adjustment could resolve.
Increasingly strict guidance: Current guidance under ASHRAE Standard 188 and CDC recommendations calls for maintaining hot water well above room temperature throughout the distribution system, typically at least 140°F (60°C) at the water heater and no lower than about 120°F (49°C) at terminal points, though exact thresholds vary by state and local code. This requires properly sized and balanced recirculation systems with documented verification.
Direct impact on energy efficiency: A poorly adjusted recirculation system can account for a large share of the energy used for DHW production. Optimizing flow rates, scheduling pump run times, and adjusting supply temperatures can significantly cut this consumption while maintaining comfort and code compliance.
Completing the DHW Recirculation and Balancing Training Course positions you as a specialist in a highly in-demand technical skill that’s uncommon among generalist installers. Hydraulic balancing of DHW installations is required in larger buildings and calls for specific knowledge that few professionals master correctly.
Professional differentiation in the field: Most plumbing technicians lack specific training in hydraulic balancing. Mastering this skill sets you apart in hiring processes and gives you access to more technically complex, better-paid work at hotels, hospitals, senior-living facilities, and residential buildings.
Ability to solve common problems: You’ll learn to diagnose and resolve frequent building complaints: cold water at distant fixtures, excessive wait times, and uneven temperatures between floors. These skills are highly valued by homeowner associations (HOAs) and facility managers.
Guaranteed regulatory alignment: You’ll master current Legionella prevention guidance, including ASHRAE Standard 188 and CDC-based recommendations, and be able to certify that return temperatures meet expected minimums, helping avoid issues during public health inspections.
Recognized professional certificate: ICTESS’s professional certificate validates your technical specialization in DHW recirculation and balancing, strengthening your position in the job market and confirming your competencies to companies in the installations sector.
This course is designed for professionals in the plumbing and installations field who want to specialize technically in calculating, adjusting, and maintaining DHW recirculation systems. Recommended candidates include:
Program details
The Capstone Project is the culminating stage of the course and represents the practical integration of every technical competency developed throughout the program. It consists of the complete calculation and design of a DHW recirculation system for a real building, applying the professional methodologies and verification procedures used in the industry.
The project includes analyzing the building (number of floors, points of use, pipe lengths), calculating return flows based on estimated heat losses, sizing the recirculation pump with a justified selection based on performance curves, and specifying balancing valves with calculated presets. You’ll prepare the installation’s schematic diagram, define valve and measurement point locations, and calculate expected temperatures on each branch.
The project also includes the commissioning procedure with a verification checklist, the flow and temperature measurements to be taken at each point, and the balancing report with final adjusted values. The final documentation must be presented at the technical level and professional format expected of maintenance reports and commissioning records, demonstrating your ability to execute and document hydraulic balancing work on real DHW installations.
ICTESS’s DHW Recirculation and Balancing Training Course includes training in the hydraulic calculation methods professionals use to size return systems. You’ll learn to calculate recirculation flows using formulas based on pipe heat losses, determine pump head accounting for linear and minor losses, and select recirculation pumps by interpreting manufacturer performance curves. You’ll also master proportional and compensated balancing methods for adjusting valves, and use structured spreadsheets to document presets and verifications. The course includes working with technical selection tables from valve manufacturers such as Caleffi, Honeywell, and IMI Hydronic, to determine Kv values and adjustment positions.
A state plumbing contractor license isn’t required, but basic knowledge of hydraulics and familiarity with plumbing and DHW installations is recommended. The course is designed for plumbing and heating installers, building maintenance technicians, site supervisors, and energy sector professionals. If you work in maintenance at hotels, hospitals, or residential buildings and manage DHW systems, you’ll have enough of a foundation to make the most of the content. The program includes technical concepts such as head losses, flow rates, and differential pressures, so it helps to be able to read installation schematics and perform basic calculations.
ICTESS’s Professional Certificate documents your technical training in DHW recirculation and balancing, including knowledge of the minimum temperatures called for under current Legionella prevention guidance such as ASHRAE Standard 188 and CDC recommendations. While it doesn’t replace a credential such as the ASSE 12080 Legionella Water Safety and Management certification that some employers or jurisdictions require for personnel managing high-risk water systems, the course provides highly valued, complementary technical competencies: sizing recirculation systems that maintain proper temperatures, verifying terminal points, and documenting code compliance. Many maintenance and installation companies value this specialized training because it lets you design and adjust installations that meet applicable requirements from the outset.
The DHW Recirculation and Balancing Training Course stands apart through its exclusive focus on hydraulic balancing, a specific technical skill that generalist plumbing courses rarely cover in depth. While standard training covers pipe, fixture, and water heater installation, this program focuses on calculating return flows, sizing recirculation pumps, selecting and adjusting thermostatic and balancing valves, and verification procedures. You’ll learn the professional working methods used by specialized technicians: proportional and compensated balancing, flow measurement with flow meters, verifying temperatures at terminal points, and preparing technical reports. This specialization lets you take on work that requires specific knowledge most installers don’t have.
