For seasoned contractors

Engineered specifically for Armstrong Air equipment

including certain Heil and Tempstar units

the S1-3500-405P/A is the correct resistive heating element choice to resolve "no heat" calls or open element faults in electric furnace assemblies

005-inch restrictors deliver the specific 20 scim flow required for low-volume terminal devices

Watts F105-04BJ Filter Els PW 17895 For seasoned contractorsUpgrade your pneumatic air system with the Watts F105 04BJ, a contractor grade 1 2 inch compressed air filter engineered for high demand HVACR and industrial applications. This 40 micron particulate filter provides essential point of use protection, effectively capturing pipe scale, rust, and bulk moisture that can compromise downstream pneumatic components. Built with a durable polyurethane bowl and guard, this unit offers 360 degree visibility for