From the publishers of Environmental Building News and Fine Homebuilding Home » Community » Mechanicals Using well water for air conditioning A random thought occurred to me while I was thinking about the Chiltrix system. For air conditioning, water at about 55 degrees would be circulated through the fan coils. That is about the temperature of the water coming out of my well all year. If the system was only used for air conditioning, could the well be the source of the cold water as opposed to running a compressor? I don't see a problem with this idea, but I expect that if it was simple at least some people would be doing it. Am I missing a major flaw? Since the system would be open loop, we would need to do something with the water after it ran through the fan coils. Lawn watering occurs at the correct time of year to use this flow, but not usually the correct time of day. Would I need a return well like an open loop GSHP? Other Questions in Mechanicals Minisplit Design for Whole House

Most efficient use of 3/4" polyiso on exterior (polyiso is foil faced on both sides)air conditioner unit on wall Basement – Best way to eliminate musty smell / mildew/ mold etchow to select a window ac unit Choosing a wall assembly: discussionhow to install window ac unit in slider window Heat pumps and traditional heatingIt’s a terrible feeling. You know your air conditioning system isn’t working right, but you don’t know what’s wrong, whether it can fixed without having to get a new system and how much it will cost you to be cool in your own home again. If your AC system isn’t working, there’s usually no mystery about it when a trained professional takes a look. Here are the four most common issues that keep air conditioning units from working well:

Your AC unit requires a certain amount of a substance called refrigerant. If it doesn’t have enough, it won’t work right. Refrigerant can leak from a system in a variety of ways, and the reason for the leak needs to be found and fixed. Then, the system needs to be recharged.The little things mean so much when it comes to AC systems. While systems are made to last for years, they must have routine maintenance to clean away dirt and debris, make small repairs before they lead to bigger problems and keep an eye on refrigerant levels. Usually, your system needs service every year. If your system seems to be failing and you haven’t had annual maintenance, that’s probably the reason.All home air conditioners have one or more filters to keep dust and dirt away from the sensitive components. If your AC system has suddenly stopped working, it could mean that a new filter is all that’s needed. It’s also possible that if you haven’t changed your filter monthly or as needed, dirt has gotten into important components and caused a failure.

You can try changing the filter and see if this gets your system working again.It may not be the AC unit but the thermostat that’s malfunctioned. Repairing or replacing the thermostat may be all that’s needed to get the system working again. Today, there are better thermostats than ever that can make your system run more efficiently and effectively than when it was new. And replacing the thermostat may cost less than a repair to the AC unit itself. Most air conditioner repair is best left to specialists. While it’s nice to know what may be wrong in advance of having an air conditioning repair technician come out, most of the problems above require specialist service, and we’re the right place to turn for the help you need.Inverter Sizing For Submersible Pump Applications of a home power system is to power a water well pump. A pump can be a real power hog! Conventional pumps require a high surge of current in order to start. The entire circuit, from batteries to invert to pump, must be sized to handle the starting surge at the same time as other loads.

Otherwise, the inverter will shut down. Use the following chart as a guide to inverter sizing. Minimum continuous power rating of an inverter to start an AC submersible well pump (with no additional loads) Using Solar Power to Power Your Well What size inverter will I need for my AC well pump? Is solar water pumping economically feasible? Where do solar pumping systems work? Tips from our pump expert View all of our Pumps Min. Rating of Modified-Sine Wave Inverter (KW) Min. Rating of Sine Wave Inverter (KW) * Typical running power is 10-20% less, but add 10% for typical inverter loss. For "modified sine wave" add another 15%, due to loss of efficiency in the motor. An inverter sized by these minimum guidelines will dip its voltage during the starting surge. This is not harmful, but it will cause lights to dim. Fluorescent bulbs may blink off, and computers are likely to crash. To eliminate voltage dips, oversize the inverter by an additional 50% minimum plus the watts capacity required to handle other household loads at the same time.

Minimum inverter sizing is based on field experience with Xantrax inverters, allowing ~25% voltage drop during startup. To eliminate noticeable voltage dip, add 50% to the minimum size. Other brands of inverters differ in their surge capacity relative to continuous rating. Exact starting capacity is difficult to predict and inverter manufacturers are hesitant to specify it. Dankoff Solar welcomes your feedback and will publish more information as a result. If a "modified sine wave" inverter is to be used and pump's control box is labeled "solid state", then it must be changed. Obtain a relay-type control box or a relay conversion kit, from any pump supplier. If the pump is a "two-wire" type (having no control box), oversize the inverter by an additional 50%. A two-wire pump may not always work on a modified sine inverter. Most well pumps require 230 VAC. Either two stacked inverters, or an inverter with 230V output, or a transformer must be used. (The Trace T-240 transformer will handle 2 HP max.).