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If it’s time to change recirc air filters in your cab, go a little further and check the evaporator for caked-on dirt that can hamper its performance. 

During normal operation, the evaporator picks up moisture from the air which condenses on the fins as water droplets before draining out of the system. This dehumidification action helps make the operator feel more comfortable in the cab. 

Big cabs, lots of glass, extended downtime, and firefighters in heavy gear make fire and rescue a demanding HVAC application and a good opportunity for service and parts sales.

A division of Oshkosh Truck Corp., Pierce has a full line of pumpers, tankers, rescues, aerials, and other emergency vehicles. We’re the standard HVAC system supplier for the Dash, Lance, Quantum, Saber, and Enforcer models. These use the R-2510 front evaporator and R-9715 rear evaporator, R-3500 heater, and R-4500 condenser.

U.S. Transportation Secretary Ray LaHood was in Clackamas, Ore., yesterday visiting the factory of United Streetcar, the only manufacturer of streetcars in the United States.

There are two ways to measure heat: intensity and quantity. Here's how to tell the difference: 

Heat intensity describes how hot something is, measured in Fahrenheit or Celsius. Heat quantity describes a specific amount of heat and is measured in British thermal units or BTUs. By definition, one BTU is how much heat is required to raise one pound of water 1 degree F. 

Can you fix an air conditioner without finding and correcting the cause of the problem? You bet! Happens every day.

Should you fix an air conditioner without finding and correcting the cause of the problem? Well, let’s talk about that.

Say a truck pulls into your shop and the operator asks to have his rig serviced in a hurry. He tells you the air conditioner isn’t cooling like it should and dashes into the restaurant for lunch.

When an A/C system isn’t cooling like you expect, you may have refrigerant leak. How can you tell? A visual inspection is a good first step. There are obvious places to look:

1. Compressor shaft seal: The shaft and seal are hidden behind the clutch assembly, but centrifugal force will throw the oil off the shaft and against the engine, bracket, or whatever is close. Check these points for oil and grime when you examine the compressor clutch and mounting bracket.

If the A/C in your car conks out, you’re merely uncomfortable for a while. But on a haul truck or harvester, the operator may have to shut down the vehicle.

We developed the ProTecht system to reduce the risk of unplanned downtime because of an A/C system failure. It’s a compact electronic control unit that monitors high-side system pressures, compressor clutch cycles, voltage, refrigerant charge, condenser fan operation, and other performance indicators and prevents the clutch from engaging if it detects conditions that can lead to a compressor failure.

We're excited to tell you about Jeff Sybil, the newest member of our OEM sales team. 

Oil color can tell you a lot about the overall condition of your vehicle's A/C compressor and other components. Here's what to look for:

• Black oil indicates carbonization caused by air (moisture) in the system.
• Brown oil indicates copper plating caused by moisture in the system.
• Grey or metallic oil indicates bearing wear or piston scoring. Piston scoring may be attributed to high head pressures cause by—you guessed it—system moisture.

If your truck heater has a water valve, you probably didn’t activate it very often during the summer months. Now that it's cooler, you want to turn up the heat.

Trouble is, after a season of disuse, the valve can stick and affect your ability to control the temperature in the cab.

We didn’t design our R-9757 to prop up an overturned Cat scraper, but this machine’s owner said the unit’s stout construction kept it from rolling further onto the cab. Installed by Badger Truck Refrigeration just a week before, the unit kept right on running once the scraper was back on its wheels. 

Yard trucks, mules, shunt trucks—no matter what you call them, Kalmar-Ottawa terminal tractors are made for productivity and comfort. Now Red Dot is part of that mix. 

Our R-3310 under-dash HVAC unit is a drop-in aftermarket replacement for the existing HVAC on 1998 to 2010 Kalmar YT-30 yard tractors. It delivers 17,000 BTU/Hr
 for cooling and  25,000 BTU/Hr for heat, and at 290 CFM, the R-3310 produces a 25% increase in airflow over the unit it's designed to replace.