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5

TLDR: Not just no, but heck no. Throwing good money after very bad First, electricity costs: any dehumidifier old enough to use R-22 is also super inefficient as-built: The government's Energy Star program has really pushed/incentivized manufacturers to make appliances more efficient, and wow, have they ever done it! We constantly have people asking how ...


4

You have it correct on how things work. There is 1 piece missing: the evaporator. When you open the door, the thermostat detects the temp increase and starts the compressor. The condenser cools the hot compressed refrigerant. The cool liquid is then metered into the evaporator. As the liquid expands, heat is removed, and the cycle is repeated. If you have ...


3

Freeman's comment is exactly right. The optimum approach depends on delta temperature, humidity, breezes, how long the sun shines directly into a window, etc. Get a couple thermometers (and humidity monitors if you can) and record the variation from dawn to dusk for several days with windows closed, several with windows open, etc. If your area cools down ...


3

If you are at set point, it sounds like it's working correctly. Many of the newer high end thermostats have the ability to program maximum number of cycles per hour or minimum time between cycles, etc. varies by Tstat. You have to get into "installer setup" which requires the installer manual for directions and codes. But bear in mind, if you ...


3

What was the previous size of the AC? It's typically encoded in the model number, and there are online decoders for your manufacturer. The size of your AC is based on the heat leakage for your home; but, many AC contractors believe that adding an extra 1/2 ton doesn't hurt. It is generally a safe practice if it is only done once; but, if it's already been ...


3

Should you just change a cap because your system is old? NO you don’t state there are any problems. Electrolytic capacitors do fail over time but we don’t know what you have. oil filled usually last the life of the unit but are much more expensive and not appropriate for all climates. If you are noticing the lights dimming , hard starts blowing fuses if all ...


3

Don't make perfect the enemy of the good, or the project never finishes. Space dimensions do not decide HVAC requirements. Insulation value x surface area does x air leakage. So it's all about the insulation. Walls with 6" of aerogel and good door/window sealing will be a completely different energy picture than J random converted step van with #16 ...


3

Those air coolers or swamp coolers as they are sometimes called, will only work in an area with very low humidity. They use what is called "evaporative cooling" to achieve a lower air temperature and while operating produce a lot of humidity. They will not produce air temperatures that are as cold as an airconditioning unit but they will lower the ...


2

I know that seems like a cheap easy hack. However it's not going to work very well, and to get it to work at all you'll have to pour some fairly serious capital into it. Given that, you would be better off using real heat pumping with freon. But yes, use that creek water: it is an excellent heat-sink and will greatly increase the efficiency of the unit. ...


2

Using only cold water to lower a buildings temperature was common many years ago. I have not seen any of the systems that still work but I do know or was told that they worked. This would be similar to a typical A/C system except that the cooling medium would be water instead of a refrigerant cooling the air. Know this that most large buildings, schools, ...


2

16 years is good , it would be hard to give an exact # but based on the size and the age of the system even I could give an idea based on the size and it is still functional, 5 ton 10 lbs R22 simple top off at this age if a couple measurements prove the system is healthy and only needs a charge that may last 7 years , I base future at 1/2 if only low on ...


2

When I was still doing residential work the normal temperature drop across the Coil was between 15F. and 20F. A temp difference above 20F meant that more air flow was needed and a temp below 15F meant that there was too much air. Unless things have changed recently or you have a special A/C system you can use these temp drops as a guide line. Just buy a ...


2

I would pick a single fuel or 2 that is easy to transport and purchase when you get to your favorite spot. What you are trying to do has already been done in the commercial setting. The company I worked for sold and serviced "3" fuel boilers, nat gas, #2 fuel oil and coal/wood. A boiler or furnace that is designed to burn anthracite (hard coal) can ...


2

Simply set your thermostat to "fossil" or "gas/oil" mode Most thermostats out there support what you describe, as it turns out, as gas furnaces control their blower automatically by default, and only use the G terminal as an override to turn the blower on when the system is otherwise not running. So, simply set your thermostat of choice ...


2

Yes, it can be done. It just needs to be plumbed (and wired) right. Each thermostat should control a valve that admits hot water to its section of the house. The boiler should be wired to fire up whenever either thermostat is calling for heat. For example, if the basement is cold, but the rest of the house is warm, then the valve allowing water to the ...


1

Try to find a good heat pump guy and not the "fool" you called before. The problem could be a faulty reversing valve, faulty compressor, refrigerant charge, bad metering valve or piston or any number of other conditions. Most guys just attach hoses and add more refrigerant without looking for the REAL problem. They know very little of what happens ...


1

In many cases (particularly with "modern" fridges that use one set of coils in the freezer and blow air around for the freezer & fridge, rather than having a set of coils in each space and no fans blowing air) the problem root cause is frost buildup in concealed air-duct spaces or ice actually blocking a fan from running. While this may be from ...


1

Continuing with @Eric's comments/answer, check the temperature difference between the air at the return and the air at the discharge or the temperature drop across the coil. You can purchase a probe type thermometer or use the temperature setting available on many multi-meters. The temperature difference should be between 15F & 20F degrees on a correctly ...


1

The 58/196 pressures mentioned is the low (suction) side pressure and the high side pressure. Those aren't horrible values since I believe 68/250 would be typical. If the system was 33F outside, then that is cooling better than 40F, so you should be fine there. Is there any chance that your evaporator inside the house froze? That can happen if humidity is ...


1

The answer consists of two parts: one is avoiding solar heat gain so that the room actually is cooler, and the other part is controlling the air so that the room feels cooler. Solar Gain This depends on where on the planet you're located (ie which latitude/hemisphere) and on the exterior features of the building and site (ie roof overhangs, trees, ...


1

No it is not normal, if your condensing coils are exposed clean them a high temp on the condenser can cause this by itself, if there is a fan make sure it s turning I once found a dead mouse stopping the fan from turning but it is usually dust On the coils outside the box (under the fridge for the ones that have fans). There are other things that can cause ...


1

It may be able to be recharged but not by a DIYer. The problem is that handling R22 requires an EPA License to purchase, possess, or use and if you had such a license, I can't see you asking this question here. R22 is quite expensive now that it can no longer be manufactured and last time I checked it was well over $100/lb. The price of R22 plus the labor ...


1

Get roller blinds with appropriate fabric, here it is called finescreen. Lets light through but blocks the sun/heat. That will definitely cover the rectangular portion of the window. For the triangle part at the top talk to blinds specialist, they might have a solution plus measure and quote are free (where I live). At least get a blind where it fits and ...


1

Different types of solar coatings (and where they are installed on the glass panes) can make a significant difference in the amount of solar gain. There are various types of solar coatings and each serves a separate purpose. However, they all allow vision out the glass. You indicate some of the double pane windows have failed. I’d take this opportunity to ...


1

You never want the coils in the evaporator to ice up. Ice can damage the coils and reduces the airflow. More often I find dirty coils outside many times filled with dust so they are not cooling the refrigerant. A 5 degree delta sounds small but is meaningless without the air temp , with a system this old an 80 deg outside temp you should be closer to 15-20 ...


1

And I'm embarrassed to say that I've figured it out.  I thought I had checked all the wiring, but I missed a small section of exposed copper on the Y wire in the air handler.  Once I taped it up, the problem went away. Thanks for the suggestions guys!


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I have seen what in my opinion are crappy jobs on multi floor systems. No single system at the same static level year round will ever heat / cool properly. I install adjustable dampers in the trunk lines both supply and output for the air handler. In the summer the upper floors are wide open and the lower floors closed down ~20% this pushes more cold air up ...


1

Air conditioners don't quite follow the same rules as everything else out there Due to the fact that hermetic air conditioning compressors invariably have overload protection built-in, the circuit breaker on an air conditioner circuit doesn't need to protect against a motor overload condition, just a short circuit. Hence, the NEC lets you size wiring and ...


1

This answer takes the question literally and offers a way to cool the room without assuming you are cooling a person or even that there is a person in the room. Buy a small air conditioner. With 30 seconds of searching I found one that uses 400 watts. Maybe you can find one that is even smaller or even more efficient. Insulate your room as well as you ...


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