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WE have a walk-in freezer that we just aquired for service. It has R-416A in it (concerted from R-12). The freezer dopes not maintain temp. Is this a good refrigerant? If not what is the...

What is the standard used for washing machings and dryers when duing heat load calcs (gain)?

What is the expected life of web duct strap iun high heat and hunidity?

How does one install grilles and boxes in an older home with plaster and lathe ceilings without damaging the plaster and leaving gaping holes?

We are in St Petersburg FL and am in dire need of a condenser tube cleaning machine. The tubes are 3/4". Does anyone know where I can rent one? I'll be glad to buy the brushes, etc but don't want...

I am having a discussion with another AC company. My installers use panduit straps on both the inside and outside of R-6 flex duct at the register boxes. Is this proper?