The Harbor Freight Pittsburgh is a 3 CFM Two Stage HVAC Vacuum Pump. It is rated to pull a vacuum to 22.5 microns. It will work with most any refrigerant, R134A and R12/R22. Vacuum pumps are often are high priced units and can cost upwards of $500-$1000 dollars. At less than $200 dollars this unit… Read More »
Probably the most often used tools in the service technician’s tool chest are gauge manifolds. A gauge manifold is comprised of a compound gauge, a pressure gauge, and the valve manifold. All the service operations performed involving the refrigerant, lubricating oil, and evacuation can be accomplished by use of this tool. Compound Gauges… Read More »
Ductless Heat Pump cost depends on the brand bought and the installation cost. The average cost for an HVAC company to install a unit is $2000-$5000 dollars. A Do-It-Yourself install can cost less than $1000 dollars. A ductless heat pump unit itself can range from $800-$5000 dollars. Hiring an HVAC Installer Company Hiring someone to… Read More »
Furnaces are generally considered as being the heating part of an air conditioning system. They also serve as the air handling and filtering section of a complete system. Furnaces may be designed to use the various types of gases, fuel oil, or electric resistance elements as the heat source. The type of heat source will… Read More »
A room air conditioner is an assembly designed as a unit for mounting in a window or through a wall. Its purpose is to provide cool, or warm, conditioned air to the room. Some are designed to be used with duct work, while others are not to be connected to a duct work. Each… Read More »
The thoroughness of the evacuation process and the universal application of a high-vacuum pump is accepted as the most sound investment for field and shop use in refrigeration service work. So that the great value of a high-vacuum pump can be appreciated, let us review the fundamentals involved in the operation of the vacuum pump… Read More »
Through the ages people have used some means of cooling foods. First, they cooled foods by lowering them into wells or storing them in caves. Following that, natural ice was used. This ice was cut in the winter and stored underground for use in warm months. The Egyptians also used another means of cooling water.… Read More »
The modern way of life depends on refrigeration equipment for the preservation of food and for human comfort. Many industrial and commercial processes, such as printing, textile manufacturing, food storage, etc., are heavily dependent on the proper conditioning of air for efficient, economical operation of the necessary equipment. The air conditioning and refrigeration field… Read More »
The maintenance for large electrical heating systems may include either panel type, baseboard type, or forced air. The panel and baseboard systems do not require much maintenance when properly installed. Baseboard heat has more air circulation over the elements that the panel type, so the units must be kept dust free. Some… Read More »
Electric heat is produced by converting electrical energy to heat. This is done by placing a known resistance of a particular material an electric circuit. The resistance has relatively few free electrons and does not conduct electricity easily. Resistance to electron flow produces heat at the point of resistance. One type of material… Read More »