Aftermarket Services

Parts

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.

Service

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.

Retrofits

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

Reference Center

Our Blog

How to Choose the Right Heater for Your Application

Let the experts at Sigma Thermal help you select the appropriate heater based on your industry and needs. We have a full range of...

Boiler MACT Compliance: Annual Testing and Burner Tuning

The EPA’s Maximum Available Control Technology (MACT), the emission standard for sources of air pollution, sets forth specific guidelines mandating the maximum possible reduction...