10 SEER units cannot be purchased in the US any longer. The new standard as mandated by the Department of Energy as of January 2006 is 13 SEER. This 30 percent increase in efficiency from 10 SEER requires a change out of the inside coil. In 2011 the Senate is proposing a new SEER and AFUE standard that will be based on where you reside in the USA. The country will be split up into three regions. Northern, Southern, and the Southwestern regions with each region having different efficiency standards. The proposed efficiency standards for each region are as follows: Continue reading “2011 Proposed Increase in SEER – EER – AFUE – HSPF” »
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.
Air conditioners and heat pumps use the process of refrigeration to provide heating and cooling. What is the definition of the process of refrigeration? Refrigeration is the process of moving heat and depending on whether it is a heat pump or air conditioner and what mode it is in will depend where you are moving the heat. An air conditioner and a heat pump (in the cooling mode) will move heat outside. The evaporator coil absorbs the heat and the condenser rejects the heat. Continue reading “Refrigeration for Air Conditioning and Heat Pumps” »
Hi. I noticed my that one of my outside heat pump condensing units was laboring throughout the night. This morning I found ice frost buildup on the heat pump condenser fins. I live in Tucson, Az. It has been colder than normal (below freezing) with a bit more moisture in the air than usual as of late. Can you please tell me what causes this frost ice buildup, and how I go about rectifying? Does this mean that the condenser pump is shot? I’m originally from the Midwest, and have never experienced this before. What should I be doing? Thank you for your help. The answer……………
It sounds to me like you have a heat pump and this is normal for frost to build up on heat pumps. I would guess that in Tucson they set the heat pump defrost cycle times pretty high as it is dry there. If you have a lot of ice build up on the heat pump then there is a problem with the heat pump defrost controls but if the heat pump frost problem is just intermittent then everything is working fine and defrosting as designed.
Heat is energy and when we produce heat we need to use energy in its production. There are natural methods for producing heat without burning or using fuels but these methods are not practical or available to the general populace for residential, commercial, and industrial use. The production heat, whether for residential, commercial, or industrial uses, uses energy and energy costs money. It is thereby necessary to have reliable and proven methods of measuring the amount of heat produced using a specific quantity of energy. Employing these reliable and proven methods we can also use the data to determine the best methods of producing heat for homes, businesses, and industry. Continue reading “Air Conditioning and Heating: Heat/Energy Values” »
Why Do I Need a MiniSplit Ductless Heat Pump or Air Conditioner?
There are many people who can actually save some money by installing a minisplit ductless air conditioner or heat pump over installing the conventional ducted split system air conditioner or heat pump. A few of the possible areas where some can use a minisplit ductless heat pump or air conditioner are rooms over the garage where additional heating and cooling is necessary simply because rooms over garages suffer because garages in most homes are not as insulated as is other parts of the home. This usually creates problems with many of the newer homes because I have seen builders who need a lesson in load calculation and properly sizing the air conditioning or heat pump systems for the conditions. I am sure many people will agree especially people who own homes where there is a room over the garage. How many of those people have supplemental heating and cooling by the way of a window unit or portable heater? Many people I would from my observations over the years. Now these people can benefit from the easy installation including lower installation costs of the minisplit ductless heat pump or air conditioner. Other places where minisplit ductless units can be considered for installation are additions to homes and basements where minisplit ductless units are great for dehumidification.
Heat Pump Types
From Geothermal Heat Pumps to Air Source Heat Pump Systems
There are different types of heat pumps available on the market today. A heat pump is an air conditioning unit that cools when the temperature is hot and provides heat when the temperature is cold. There are many different types of these heat pump systems available. There is the geothermal heat pump which can either utilize a series of closed loop water pipes buried in the ground or other methods of heat exchange to remove or absorb heat for heating and cooling. There are air to air heat pumps and these types of heat pumps can be configured differently. One type of air to air heat will utilize electric heating for back heat while another may use a gas furnace for back up heating. These types of heat pump systems can also be split heat pump systems or package unit heat pumps. A description of the various types of heat pumps and how they work is below in this article on heat pumps types.