by High Performance HVAC | Thermostats |
How to Wire a Heat Pump for Control - There may be a time when you will want to change your old heat pump thermostat with a new heat pump thermostat. We have other articles here that will help you with thermostat wiring. These other articles help you with thermostat wiring colors and thermostat wiring diagrams. In this article, we will provide specific information for wiring a heat pump for control.
Wiring a heat pump is different than wiring an air conditioner with a gas furnace or boiler. There are extra controls in heat pumps that require extra attention and understanding to get the wiring correct. Additionally, changing an older mechanical thermostat to a newer digital thermostat will require some extra wiring that also may require you to pull new wire to the thermostat from the air handler.
Before doing any
wiring for your thermostat or otherwise, always make sure you turn off the power at the breaker and the air handler/condenser. Furthermore, you can cause serious damage to your system for not doing so.
Variations for Heat Pump Thermostat Wiring | How to Wire a Heat Pump for Control
There are many variations to wiring a heat pump for control because there are many types of heat pumps. Heat pumps provide heating and cooling for a home or business. Heat pumps use the process of refrigeration to move heat in one direction or another depending on the season and the setting of the thermostat. Additionally, air-source heat pumps have backup methods of heating for two reasons. (more…)
by High Performance HVAC | Air Conditioning |

Air Conditioner Sequence of Operation - When a technician is troubleshooting an air conditioner problem it is important that the technician understands the air conditioner sequence of operation for that equipment. When there is a problem with the equipment, including air conditioners, the technician will know the problem if the equipment or air conditioner does not follow the sequence of operation. Sometimes it is that easy, and other times it is not that easy when troubleshooting any HVAC equipment. However, it is important to understand the sequence of operation for air conditioning so the technician can troubleshoot the problem. (more…)
by High Performance HVAC | Air Conditioning |
Home Humidity Control | Why Its Important for Comfort & Health - Humidity is important to our home and health and it is important to maintain the correct humidity in our homes and workplaces for our health. What is humidity? Humidity is simply little water droplets in the air. Cold air is nearly saturated with these little water droplets because the contents of cold air allow the air to hold more water droplets or humidity. As air is heated it expands and holds less humidity. (more…)
by High Performance HVAC | Technical Reference |
Humidifiers and Comfort - It’s wintertime, and your skin and sinuses are dry. Did you know that this condition not only extends to yourself and your health but also to your home? The furniture, doors, and other wood products in your home are all affected by the level of humidity. It is crucial to maintain proper humidity levels in your home.
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by High Performance HVAC | Thermostats |

HVAC Products Containing Mercury and Proper Disposal - Mercury is extremely harmful to the environment and causes severe health problems in humans and animals. For many years HVAC and HVAC Controls manufacturers have used mercury in switches.
Mercury is a liquid metal and provides a good source used in many switches because of its fluidity and conductivity. From thermostats to boiler controls the liquid metal provides a reliable and efficient switching mechanism to start and stop certain sequences in HVAC applications. (more…)
by High Performance HVAC | Thermostat Reviews |
SilverPAC Silverstat 7 Advanced Thermostat - This thermostat is sure to save you some money in energy costs if you can get over the initial retail cost which is currently unavailable. Taking it a step further you can make some control changes to your appliances and hook them up to this thermostat so you can program on and off schedules for the appliances. We’re not talking about just your air conditioning and heating system either…………from your refrigerator freezer to your water heater to your lighting it can all be intelligently controlled and monitored. In my humble opinion, it will definitely change your utility bill. Here are some of the key features that will help you save energy. (more…)
by High Performance HVAC | Thermostats |
Honeywell Chronotherm Plus Thermostat - Trane XL19i Condenser – I have a Honeywell Chronotherm Plus 8624D running a Trane XL19i Air Conditioner with a Trane XV90 Gas Furnace - all installed new in new construction in 2003. Every winter, during the morning warm-up from 66 to 70, the burners stay on for approximately 1.5 hours at 70, then rise quickly to 73 before finally shutting off.
The only way to interrupt the process is to turn the system OFF at the thermostat. The system is on AUTO with the cooling set at 75 for the winter.
I have swapped the thermostats (there are two sets in the house, this is the one in the attic for the second floor) with the same results. I have not swapped the thermostat circuit boards, but I can not see a reason to.
The main floor is on the same schedule but has never done this three-degree burst. I have had three different contractors out, with corresponding charges for thermostat troubleshooting with no luck. Have you ever seen this? Any thoughts? Thanks! (more…)
by High Performance HVAC | Thermostats |
Data Logging Thermostats - High Performance HVAC Air Conditioning & Heating Thermostats
1) Question: Is there a thermostat for a nursing home with a printout for temperature verification?
The answer….. (more…)
by High Performance HVAC | Thermostats |

Best Advice for Thermostat Installation - Read the Guides
Successful Thermostat Installation Advice – High Performance HVAC wants you to be successful at the installation of your new thermostat so we ask that you read the pages here at High Performance HVAC carefully before you attempt to install your new thermostat. If necessary study the installation guides before trying to install your new thermostat to make sure you can install the new thermostat without any hitches.
Again we sincerely care about the success you have at installing your new thermostat so please read carefully and follow all instructions. We are confident that if you follow all the instructions, including the manufacturers and our thermostat installation pages here you can join the thousands of other people who have used High Performance HVAC Guides to correctly install a new device and enjoy the savings a new programmable thermostat can save you on energy use. (more…)
by High Performance HVAC | Thermostats |
Thermostat Wire - Thermostat wire comes in a bundle with the outer jacket being either brown or white. The bundle can have anywhere from 2 conductors inside the bundle or outer jacket and all the way up 8 or 10 conductors inside the outer brown or white jacket. The bundle for typical wire is 18 gauge solid copper conductors and each has its own outer jacket that is a different color than any of the other conductors in the bundle. These multi-color wires are colored differently for identification from one end of the bundle to the other end of the bundle. It can be purchased in a bundle as follows:
This article refers to conventional thermostat wire which is different than the wire you would have if you have a communicating thermostat.
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