I have a Lennox 10a 64bc10p air conditioner unit, which is a two zone air conditioner. I turned the main floor switch to cool mode first, which works fine. After several hours, I turned the second floor switch to cool mode, and it suddenly stopped blowing air to both floors. The air conditioner unit outside (compressor?) was still running. I turned off the air conditioner, and turned on the fan only, which works (the blower works?). I thought it maybe the control board problem. I also tried turning on the air conditioner for a few minutes and turning it backoff, the vent blew cool air for couple minutes and then stopped. (does this mean the compressor works?). I checked and replaced the filter. But now if I turn on the air conditioner and then turn it off, the outside unit continues running, it should not be. (Is this a contactor problem?)

Important Feature Considerations for Window Swamp Cooler and Window AC Energy Efficiency Window evaporative air cooler is an energy efficient method of cooling a home. Compared to air conditioners, they have no chemical and use about 15%-35% of the electricity used by air conditioners. However, they do require a constant water supply. They may, therefore, prove not efficient in areas experiencing water restriction or drought. They are also not as effective as air conditioners when it comes to cooling the air in various weather conditions. Climate Considerations Window Swamp Coolers work best in hot and dry climatic conditions, such as in desert regions. This is because they function by adding moisture to the air making your home have a more comfortable feel. In humid regions, swamp coolers can only lead to excess humidity giving room to the growth of mold or mildew. Air conditioners are effective in almost all climatic conditions but they can also make the air dry. It, therefore, makes their use more effective in humid areas. Using air conditioners in dry climate could make the air too dry and might lead to eye and skin complications. Costs Window air conditioning gadgets cost somewhere between $345 – $1,190. They normally come complete with a DIY manual. On the other hand, window swamp coolers are priced between $400 – $1000. They require no professional help to install. CO2 Emissions Window mount swamp cooler tends to have reduced levels of CO2 and greenhouse gases emissions when compared to air conditioners. This is because swam coolers utilize the use of water to cool the air. Air conditioning units on the other hand use cooling or refrigerant chemical. When this chemical is converting into gas or liquid, it emits CO2 and greenhouse gases. This becomes harmful to the environment as well as the air we breathe. Noise Window AC tend to produce more noise compared to window evaporative cooler. The noise in air conditioners occurs when the condenser is working to convert the chemical into either gas or liquid. Installation Window unit swamp coolers will need no professional services to install in most situations. Window air conditioning units, on the other hand, might need the help of a professional or a detailed DIY manual. Maintenance Forwindow air cooler to function properly they require maintenance daily, monthly, and yearly. This also involves changing the pad when necessary and controlling the water. Most of the maintenance jobs are DIY. You can also do a professional yearly service of about $100. The swamp cooler units require more concentration in maintenance compare to air conditioners. Ait conditioners are meant to be serviced yearly. The yearly maintenance includes changing the filter, charging the chemicals, and cleaning. The cost to the yearly servicing is about $70 – $100. Air conditioners have parts that are prone to failure. These parts can lead to an additional yearly cost of about $250 and $ 2,000. It, therefore, makes them more expensive in terms of maintenance.

First it depends on what you currently have. Second the cost will be nowhere near that price. As you need matching coils, ah, infinity controls, labor.

I know nothing about why your home is not set up for central air. I can speak knowledgeably about split a/c units. We installed them when we lived in Thailand. They are remarkable, in that they usually feature a dehumidify setting, to get the moisture out without making it too cold, as well as a cooling setting. If they worked at 17 degrees from the equator during monsoon season and hot dry season they ought to work well in Washington state. We went with small units in each bedroom, so that we were only cooling the area we were in, and one larger 20kbtu unit for the entire downstairs.