A recent inquiry involved a heating system for a school in which two electric boilers were being added to supplement the output of a gas-fired cast-iron boiler, and take advantage of low “off-peak” electrical rates.

This newest edition discusses the physical processes at work in hydronic systems and presents a process for troubleshooting issues in residential and light commercial settings.

Given the current prices for fuel oil and propane, and current state and federal incentive programs, many homeowners are asking heating contractors to replace their aging boilers with a geothermal heat pump system.

Can you spot at least 5 causes for concern among these three photos? If so, what would you do to correct them?

Service technicians who run into complications while on the job can contact Weil-McLain Tech Support for Site-Call video and receive immediate real-time assistance.

An installer is asked to provide a 4-ton-rated (48,000 Btu/h) geothermal heat pump system that can provide space heating and domestic hot water.

Because the price of fuel oil has increased dramatically over the last several months, an installer with lots of experience in installing conventional oil-fired boilers is asked to install a pellet-fired boiler.

A technician installs a system to provide domestic hot water to a high end house with several bathrooms. Can you spot at least five details that are incorrect, and recommend how to fix this situation? 

A heating pro is asked to retrofit a pellet-fired boiler to an existing distribution system consisting of older cast iron radiators, iron piping and an oil-fired boiler.