Thermostat Wire Colors Code

Posted on July 5, 2008 by Richard Ashworth

Successful Thermostat Installation Advice includes getting the wiring correct

Always follow the thermostat manufacturers instructions whenever changing the thermostat. Always turn the power off at the air handler and the condenser and make sure there is no voltage at the transformer before proceeding. The colors below are the most likely colors used for most installations however your thermostat wire colors may be different than what is indicated here. There is no official standard for thermostat wire colors. Thermostat wiring colors are not standardized but these are the most wiring methods used based on my years of experience in the HVAC field where I successfully wired a lot of thermostats. For instructions on how to wire a thermostat please see our how to wire a thermostat page.

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Air Conditioner Types

Posted on January 4, 2008 by Richard Ashworth

This Trane Condenser is a part of a heat pump split system

Air Conditioners comprise a wide array of variety, types, and names when reference is made to them. Below is a list used to describe these types of air conditioner systems in generic terms. Any one of the air conditioner units below can heat, cool, or condition air or have a combination or single use depending on how they are specified at the factory and configuration. The end user, the customer, usually specifies to the contractor what application they need to satisfy and the contractor orders the equipment from a local distributor or factory representative. Equipment that is commonly used and purchased by contractors is usually kept in stock at the distributor. Some equipment that have unique specifications have to be special ordered from the factory and will require time for the manufacturing and shipping process. Continue reading “Air Conditioner Types” »

Trane Chilled Water Systems – Multi-Zone Air Conditioning Systems

Posted on October 6, 2007 by Richard Ashworth

Trane Chilled Water Systems – Multi-Zone Air Conditioning Systems This Trane HVAC chiller serves four different apartments. Chilled water systems offer a great way for multi-zone air conditioning. From small apartment buildings to large commercial buildings chilled water systems can serve multi-zone air conditioning systems. From one air conditioning zone to hundred the only limitation is the size of the chiller. If the air conditioning zoning system (the load) is matched up with the right sized chiller (in tons) the system will serve all air conditioning zones and keep all the occupants comfortably cool. Chilled water systems can also be integrated with the boiler system so that the same system can be used for heating and cooling. A good control system will add efficiency and more comfort to the system. Continue reading “Trane Chilled Water Systems – Multi-Zone Air Conditioning Systems” »

Mini-split Air Conditioners or Ductless Air Conditioners Basics

Posted on February 4, 2006 by Richard Ashworth

Mini-split Air Conditioners or Ductless Air Conditioners

Ductless air conditioners are like regular air conditioners with ducts in that the compressor is located outside. They are often preferable to window units for aesthetic reasons. Ductless air conditioners are not good for cooling more than 1 or 2 rooms at a time and are expensive on initial purchase. Ductless air conditioners are also known a split system air conditioners or mini-split systems. As mentioned earlier the larger unit is places outside the building or home. Continue reading “Mini-split Air Conditioners or Ductless Air Conditioners Basics” »