The fresh-air intake filter not only captures dust, dirt, and other airborne particles that can irritate the driver, it stops them from interfering with the performance of the heater and air conditioner. Changing the fresh-air filter at regular intervals is one of the best things you can do to improve HVAC performance.
For more than 40 years, Red Dot has been providing custom HVAC units and components for construction, mining, agriculture, forestry, military, commercial freight, and emergency service vehicles. Story angles include operator comfort; cab design; maintenance tips; shop tools; extreme HVAC applications; all-makes parts; and Red Dot’s advanced engineering and test facilities. Media contact: Stephen Petit
Gary Hansen, vice-president of engineering at Red Dot, offers three HVAC system enhancements not to overlook.
When you’re on the road and all that’s blowing through the vents is warm air, it’s tempting to go to a parts store and buy a one-pound can of R134a, the kind with a hose on it that you can hook up to charge the A/C system. But you’ll risk doing more harm than good.
When the temperatures warm up, it’s a good time to remind technicians and vehicle operators alike about the dangers associated with using hydrocarbon refrigerants sold as cheap substitutes for R-134a and R-12.
High-quality refrigerant hoses and fittings can help your A/C system maintain its charge. An example is the AeroQuip E-Z Clip system. It requires no power tools and quickly produces a durable, flexible hose and fitting for almost any vehicle.
Old rules of thumb say you should add so many ounces of oil when you replace a condenser, so many ounces when you replace an evaporator, etc. But your air conditioning system demands more precision than that. Here’s what you should know about putting oil back into your HVAC system.
Most technicians start their electrical diagnostics with a check of the ground path. A loose connection, corrosion, or fleck of paint can create resistance, and they’re easy to spot and fix. But sometimes the issue is the ground wire itself. Red Dot’s Pocket Wiring Gauge can help.