Aftermarket Parts and Services


Large inventory of OEM replacement parts available for prompt order, shipping and delivery. Sigma parts specialists help with part selection and with sourcing hard to find parts. Inventory is updated continually to account for and inform customers of components that have been discontinued or modified.  We stand behind the quality of each heating component that we supply.



System Analysis & Energy Audits
A complete system analysis can reduce wasted energy and bring your system up to industry standards.

Providing replacement parts, upgrades for control panels and Boiler MACT compliance.

Maintenance & Service Plans
Prescheduled, periodic maintenance services. Technician recommended solutions that are economical.




Our team can also optimize heater performance via retrofitting. Once your needs are assessed, we can recommend custom solutions that may offer cost savings. We can retrofit heating systems to repair damages and modernize equipment.