Why Is My AC Icing Up — and What Can I Do About It?
AC Troubleshooting · Frozen Evaporator Coil Why Is My AC Icing Up — and What Can I Do About It? A frozen evaporator coil almost always comes down to one thing: not enough air moving across it. Here’s every cause, how to diagnose it properly with static pressure, and the one rule every tech should […]
Low-Voltage Shorts: Why Your AC Blows Fuses, Goes Blank, or Won’t Run
AC Troubleshooting · Low-Voltage Controls Low-Voltage Shorts: Why Your AC Blows Fuses, Goes Blank, or Won’t Run A short in the 24-volt control circuit is one of the most common — and most misdiagnosed — reasons an air conditioner trips its fuse, the thermostat goes dark, the contactor won’t pull in, or the outdoor unit […]
Walk-In Freezer Construction: Panels, Doors, Floors & Refrigeration
Commercial Refrigeration · Walk-In Freezers Walk-In Freezer Construction: Panels, Doors, Floors & Refrigeration A field guide to how a commercial walk-in freezer is actually built — from a 6×6 ft restaurant box to a cold-storage warehouse — and the details that decide whether it lasts 20 years or rots in three. By T&H Mechanical · […]
The Twin Cities Butcher’s Guide to Meat Market Refrigeration
Guide · Commercial Refrigeration The Twin Cities Butcher’s Guide to Meat Market Refrigeration Cases, Coolers, Smokehouses, and Keeping It All Running — a plain-English guide to specifying, upgrading, and servicing the refrigeration in a full-service meat market. From the team at T&H Mechanical · East Metro Twin Cities & Western Wisconsin · 24/7 Service The […]
The Twin Cities Florist’s Guide to Flower Coolers: Walk-In, Reach-In & Open Display
How to buy, install, and service a flower cooler in Minnesota — walk-in vs. reach-in vs. open-air, where the refrigeration lives, and winter reliability.
The Best Walk-In Cooler Setup for Holding Beer
Coil sizing, defrost, doors — and a four-evaporator, dual-condenser setup that holds temperature even if a compressor fails. How to build the ultimate beer cooler.
Walk-In Defrost Done Right: Multiple Evaporators & Staggered Timing
How to defrost a walk-in with multiple evaporator coils on one condensing unit — staggered per-coil timing and protecting the compressor.
Keeping Beer at 32°F: The Liquor-Store Walk-In Cooler Challenge
Customers want ice-cold beer, but holding a walk-in at 32°F without icing the coils is harder than it looks. Here is the real engineering.
What Size Unit Do I Need For My Wine Cellar?
Most home wine cellars need 1,000-4,500 BTU/hr of cooling. Here is the 5-component heat-load formula, a free Excel BTU calculator, and the wine-specific reasons regular mini-splits fail.
