A manufacturer of heat exchangers and custom designed heat transfer, and heat recovery products.  


Custom engineered foam products and components to meet insulation needs.


Manufacturer of combustion analyzers and gas detection products. Annual calibration is done at our warehouse in Hermitage, PA.


A leading manufacturer of energy-efficient, residential and commercial mini-split and VRF systems.

Heritage Plastics

PVC pipe products for DWV applications and electrical conduit.


Simplify bidding and installation on every heating and cooling Job.


An industry-leading manufacturer of heavy-duty power tools, accessories and hand tools for professional users.


Steel panels, convectors, decorative, bathroom and electric radiators, underfloor heating systems, thermostatic valves for heating and cooling, balancing valves together with electronic control equipment.


Distributes an unmatched array of more than 6,000 plumbing products under Oatey, Cherne, Hercules, Dearborn, Harvey and QuickDrain brands.

Python Line Sets

An alternative to line sets, Python PERT-AL-PERT line sets are light-weight, chemical resistant, UV resistant, and tear and kink resistant. Perfect for both standard split and mini-split systems.

Schedule Engine

Leading provider of intelligent, self-service online scheduling solutions that gives contractors the opportunity to offer a unique online booking experience to their customers.

Super Radiator Coils

Precision-made products backed by nearly a century of industry knowledge and experience.

Thermo Products

Thermo Products line features warm air furnaces, heat pumps, central air conditioning systems, and a full line of related accessories.


PVC fittings for DWV and Schedule 40 applications.

Tjernlund Products

Quality products solving exhaust, ventilation and heating/cooling issues.

Westinghouse Mini-Splits

Westinghouse residential, ductless mini-split systems offer energy-efficient solutions in single- and multi-zone applications.

 = Stocked in PSI warehouse