Aftermarket Services


OEM Replacement Parts
An extensive inventory of parts are available for quick order, shipping and delivery. Sigma parts specialists can assist with part selection and with sourcing hard to find parts for your heating system.

Inventory is updated continually to account for discontinued or modified components.



Maintenance & Service Plans
On-site technical service and help to troubleshoot complex operating issues.  We assist with upgrades and replacements for control panels and Boiler MACT compliance.  Prescheduled, preventative maintenance service plans offered too.

System Analysis / Energy Audits
Complete system analysis to help reduce wasted energy and bring your system into compliance with industry standards.



Upgrades / Replacements
Retrofits services available to help optimize your heater or system performance. We can retrofit heating systems to repair damages and modernize equipment.

close <> <>