by High Performance HVAC | Commercial HVAC |
About Chilled Water Systems HVAC Hydronics - Chilled water systems are mainly used in large commercial HVAC air conditioning systems and industrial cooling applications although there are some residential and light commercial HVAC chilled water systems in use. Chilled water systems are popular because they use water as a refrigerant. Water is far less expensive than refrigerants. This makes them cost-effective, especially in commercial HVAC air conditioning applications. (more…)
by High Performance HVAC | Direct Digital Controls |
What you will learn from this
Building Automation Systems article:
- The efficiency and conveniences Building Automation Systems add to the building control systems and HVAC systems
- How Building Automation enhances building energy savings and troubleshooting problems
- How allowing controllers to communicate with each other enhances HVAC and electrical systems
- Many of the benefits of Building Automation Systems for Building Automation and Building Control Systems
- Communication Protocols and Integration of HVAC Systems, Lighting, and other Building Control Systems
- Building Control System User Interface for Remote Monitoring and Control
- Monitoring Energy Consumption and Energy Efficiency
- Lastly, resource and Related Links to help you learn more
Many people wonder what Building Automation Systems (BAS) can do. The primary use of BAS is commercial HVAC control systems and energy management system applications. Building Automation itself is an energy management system that saves management companies and building owners by efficiently controlling air conditioning and heating comfort and process systems.
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by High Performance HVAC | Air Handlers |
Preventive Maintenance Air Handlers - These air handlers provide air conditioning for a zoned VAV system. The air handler is an integral part of an air conditioner system. The air handler contains a blower, air filters, some coils (DX or chilled water), hot water coils (not all air handlers have heating coils in them), and some controls. (more…)
by High Performance HVAC | Thermostats |
Thermostat Wiring Colors Code Page Navigation
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- Essential Thermostat Wiring Color Guide Including Manufacturers Instructions
- Thermostat Terminal Designations Quick Guide - Detail Wiring Color Guide Below
- Red-Wire - connects to the R terminal with the red wire
- RC-Wire - connects to the RC terminal RC red
- RH-Wire - connects to RH terminal RH heat
- Y-Wire - connects to the Y terminal and is for cooling stage 1 with the yellow wire
- Y2-Wire - connects to Y2 terminal and is for cooling stage 2
- W-Wire - connects to W terminal and for heat stage 1 with the white wire
- W2-Wire - connects to W2 terminal and for heat stage 2
- G-Wire - connects to G terminal and for fan operation with the green wire
- C-Wire - connects to C terminal (common 24v power) with the C wire
- O or B-Wire - connects to O or B terminal and is for reversing valve operation
- E-Wire - connects to E terminal and is for Emergency heat
- X or Aux-Wire - connects to X terminal and is for auxiliary
- S1 and S2 Wires - connects to S1/S2 terminals and is for outdoor temperature sensor
- Thermostat Wire Color Code Chart
- Tracing the Wire to the Source
- Additional Resources
What you will learn in the
Thermostat Wiring Colors Code article:
- First, what thermostat wire colors is likely to go to which terminal on the thermostat in your heating and cooling system
- Secondly, the function of each wire terminal on the average thermostat highlighting some of the differences in those HVAC system functions from manufacturer to manufacturer as recommended for thermostat wire color
Thermostat Wiring Colors Code | HVAC Control
Always follow the thermostat manufacturer’s 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.
Furthermore, the thermostat wire colors below are the most likely colors used for most installations; however, your thermostat wire colors may be different than what the indication is here. There is no official standard for thermostat wire colors. Additionally, thermostat wiring colors are not standardized. However, 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 and as recommended by manufacturers and common sense for thermostat wiring colors code.
For instructions on how to wire a thermostat, please see how to wire a thermostat page. Refer back to this page for thermostat wire colors.
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by High Performance HVAC | Buyers Advice, Carrier HVAC Reviews, York HVAC Reviews |
York Versus Carrier Air Conditioners - Every manufacturer has their own parts system and sometimes these parts are readily available aftermarket and sometimes the parts are proprietary and can only be purchased through the manufacturer of that equipment. Carrier is one of the HVAC manufacturers that has proprietary parts and sometimes you will pay a premium for those parts.
The manufacturer can hold the customer hostage especially when it comes to repairing the unit. Of course, York is one of the big HVAC manufacturers and they too have proprietary parts however the parts are usually more reasonable for purchase as far as cost is concerned so people would lean towards purchasing a York simply because the replacement parts are not sold at a premium where with SOME Carrier parts are sold at a premium and are not easily replaceable except through a Carrier dealer.
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by High Performance HVAC | Buyers Advice, Carrier HVAC Reviews, Trane HVAC Reviews |
Trane Versus Carrier Air Conditioners - The first thing we need to do when comparing a Trane Versus Carrier is to make sure we are comparing similar models with similar features.
Each manufacturer makes various models from a builder’s grade unit, which is usually the HVAC manufacturer’s cheapest model up to the unit that has bells and whistles, and some of these have bells and whistles for the bells and whistles. You want to make sure you are comparing apples to apples and not an apple to an orange.
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by High Performance HVAC | Refrigeration |
Condensing Unit Frozen Wont Turn Off - What you can expect to learn from Condensing Unit Frozen won’t Turn Off article: this article is an answer to a question taken from our email by a visitor to High Performance HVAC. We often use the questions we get in the email as a guide to writing articles. The topic is a condensing unit that will not turn off, and it is freezing up. From my experience in the field and using my HVAC knowledge, I offer the readers a list of what could cause this problem. We hope it helps you.
What’s the possible problem with a frozen air conditioner condenser that won’t turn off except with the breaker? (more…)
by High Performance HVAC | Refrigeration |
What you will learn from
Air Conditioner Compressor Failure article:
- discussion about HVAC compressor failure and how it is one of the most expensive air conditioner repairs
- comprehensive list of reasons why HVAC compressors fail
- actions to take to prevent compressor failure
- the importance of doing the job right and using the triple evacuation method
- a video on the importance of regular maintenance on HVAC equipment
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by High Performance HVAC | Thermostats |
Types of HVAC Thermostats | HVAC Control There are many different types of thermostats. Thermostats also have various levels of complexity. Below is a list of the basic thermostat types. As we have time we will update the list to make sure it is as comprehensive as possible. (more…)
by High Performance HVAC | Thermostats |
Thermostat Selection Guide - This article will help you select the right type of thermostat for the HVAC system you have installed. It offers a comparison matrix for you to choose the right thermostat replacement. Get it right the first time!!!
So you have made a choice to replace the thermostat in your home or business and you decided to do it yourself. Hopefully, you will follow the advice on this website and read the instructions before replacing the thermostat.
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