Tag Archives: heat pumps

Heat Pump Thermostat Wiring Chart & Diagram – HVAC


Heat Pump Thermostat Wiring Chart & Diagram

The following graphics are meant as a guide only. Always follow manufacturers instructions for both the thermostat and the HVAC system. Additional articles on this site concerning thermostats and wiring can help you solve your problem or correctly wire a new thermostat. Some HVAC manufacturers use other colors for additional control points and it is why we advise you to read the manufacturers instructions. These charts and diagrams only represent the basic system. It is possible your system is equipped with additional HVAC components such as a humidifier or electronic air cleaner. Depending on the manufacturer and the designer of the components will depend on how the additional components are wired or integrated into your system or thermostat.

Heat Pump Thermostat Wiring Chart & Diagram

Heat Pump Thermostat Wiring Chart & Diagram - Single Stage Heat Pump Wiring Diagram

Single Stage Heat Pump Wiring Diagram

Heat Pump Thermostat Wiring Chart & Diagram

The Basic heat pump wiring for a heat pump thermostat is illustrated above. It corresponds with the chart below to explain the thermostat terminal functions. Before uninstalling the old thermostat take a picture of the wiring with your cell phone before removing the wires. This way you have a reference. At the minimum draw a picture of it referencing the wires, wire color and what terminal the wire is attached to what terminal. The photo and the drawing reference can be used later to make sure you wire the new thermostat properly.


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Humidifiers and Comfort – HVAC Healthy Living


Humidifiers and Comfort

Humidifiers and Comfort

Humidifiers and Comfort  – It’s winter time, and your skin and sinus’s 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.

Ever notice in the winter time the doors don’t close just right inside your home? Ever get static-shock when you touch something or someone? This is caused by dry air. The solution is a humidifier. There are many types of humidifiers from portable to fixed. The prices for these humidifiers also vary. Naturally the fixed will cost more and you will most likely have to hire a contractor to install it, but the humidifier will definitely make a big difference not only for your health, but also for your home.


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Condenser Fan Motor | Air Conditioners & Heat Pumps | HVAC Refrigeration


Condenser Fan Motor

Condenser - Air Conditioner - Heat Pump Fan Motor

Condenser Fan Motor Inside the Condenser

The condensing unit fan is responsible for pulling air through coils of the condensing unit. They pull air through the condensing unit coils. It runs the gamut in horsepower ratings from low fractional horsepower in small residential units all the way up to 1 horsepower (and larger) 3 phase motors in large commercial HVAC units. It is usually direct drive to a propeller blade which creates the air flow. Its job it to move air. A specific quantity of air through the condensing unit coils so that a heat exchange process can take place and rig the condensing unit of the heat it absorbed indoors or in the case of the heat pump in heating mode to absorb heat from the outside air and send it inside. It is the process of refrigeration and all the components work together to achieve one result and that is to move heat from one place to another.


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Duct Work and High Ceilings | HVAC Duct Work Systems


Duct Work and High Ceilings

Duct Work and High Ceilings | HVAC Duct Work Systems

Duct Work and High Ceilings – I did not see any reference to my question and would appreciate a response as soon as possible, as due to medical situation, have to make a decision soon. We own an OLD house with 13′ ceilings in a large part of the home and 11″ ceilings in the LV/DR and BR. We are oscillating on where to place the ducts….Floor or ceiling. It appears to be counterproductive to me to put the duct work in the ceiling since it will have so far to go. We are looking for the most cost effective, not upfront cost but operating cost, solution. In addition, we are considering DF heat pumps. The house will need 2 or 3 to be zoned correctly. Please let me know about the duct placement and thank you for your help?


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Air Conditioner Inverter Review | Heating and Cooling Efficiency


Air Conditioner Inverter Review

Many minisplit air conditioners and heat pumps use inverters for efficiency. Conventional split system air conditioner and heat pumps can now be purchased with inverters for ultra efficient heating and cooling.

Air Conditioner Inverter Review – Many minisplit air conditioners and heat pumps use inverters for efficiency. Conventional split system air conditioner and heat pumps can now be purchased with inverters for ultra efficient heating and cooling.

Inverter air conditioners came to the USA in the form of ductless mini-split air conditioners and were later expanded to ductless mini-split heat pumps. Inverter air conditioners and inverter heat pumps are considered the most efficient air conditioners and heat pumps available on the market for conventional systems and for air source air conditioners and air source heat pumps the inverter air conditioners and inverter heat pumps come close to matching the efficiency of geothermal heat pump systems. In fact some inverter air conditioners and inverter heat pumps beat some geothermal heat pump systems when matched up for efficiency. If it is impractical to drill a well or do trenching for a geothermal system and you want very high efficiency the next best thing is an inverter air conditioner or an inverter heat pump. Of course with any air source heat pump geographical considerations must take precedence as air source heat pumps are not practical in the northern climates for technical reasons unless they are specially engineered heat pumps for operation in the Northern climate region.


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