How Can I Determine What Size Central Air Conditioner My Home Needs?

This depends TREMENDOUSLY on where you live!If you live in the sort of place where everyone has and needs A/C for several months a year or longer (like Houston, Orlando, Phoenix), a professional might come up with an estimate in the range of 1 ton of cooling (12,000 BTUs/hr) for each 1000 square feet, plus 1,000 for each good-sized south-facing window, plus more if your insulation is poor.But if you live in Minnesota, and the A/C is only needed for 2-3 days at a time 2-3 times each summer (because you usually just open up the windows and run the whole house fan to bring in the cool evening air), just get a 2 ton unit and declare victory.When we added A/C to our 2600 gross square foot home in New England the contractor recommended a 4 ton unit. We talked him down to 2. 5, and it's perfect. We hit 90 F a couple days in a row a few times each summer.Most people we know are happier with a smaller unit than the one the contractor calculates for you. One neighbor had a system installed with 2 compressors/condensers (the outside unit) where the second one only comes on if the system falls behind. They are not sure the second unit ever actually turned on in the first 10 years they had it.Just for scale, a small window A/C unit is about 0.4 ton (5000 BTU/hr). So a 2.5 ton unit is sort of like having 6 of those scattered around your house, but with better distribution, and a thermostat, and MUCH quieter, and more efficient. How can I determine what size central air conditioner my home needs?

1. Central air conditioner surging all the lights in my house?

Sounds like the compressor is trying to start but can not ....Get your A/C tech to check the starting capicator and the run compacitor

2. Central air conditioner not working well; do I need to replace?

Most leaks even inside the outdoor unit can be repaired. Weather you should repair or replace it depends on the age of the unit, efficiency vs. the new unit and cost of install. In either case GET A SECOND OPINION. Also if it does need to be replaced get several price quotes. By the way for California that price does not sound extremely high but our wages are high compared to other areas..

3. my central air conditioner is not blowing hard, it is set to 65 but it isnt blowing hard from the vents?

First, change your air filter. I have seen filters clogged with 2" of sediment. If that does not improve matters, inspect your ductwork for crimps or disconnected branch lines. You fail to say how old this unit is. It may be the fins in the blower are clogged with dirt. Or your evaporator coils could be clogged. Or the unit is low on refrigerant. The outdoor condenser coil could be choked with debris or the shrubs may be blocking airflow. Much of this, you can easily check for yourself. So do the easy stuff first, then call the HVAC company when all else fails.

4. Amana (Goodman) central air conditioner isn't blowing cold?

Need to know what the temperature of the supply air is. If it is 65, for example, there is a problem. I am pretty sure it is not the thermostat.

5. stop the air flow of a central air conditioner from a specific room?

No. those window contraptions upload quick for your electric powered bill. exceedingly if u have a awesome length homestead or maybe position of living. per chance purely get a small one hundred ten BTU to maintain your bedroom cool till u get the different fastened. After u tried it you may be pleased about considered necessary air

6. Central Air Conditioner runs almost all the time at 78 degrees?

Air Conditioners are supposed to make temperature and shut off, periodically- more than likely its one of two things: 1. the system is undersized. This is in reference to the tonnage of the system measured in btus. 2. you need better insulation and windows. What your system is battling is called heat gain. So you either increase the capacity to remove heat (bigger btu number) or increase your home's ability to keep heat out (insulation.) Here's a link to a short form heat load calculator to give you an idea.

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After you replace the filter, make sure all your louvers are wide open. Then go outside and thoroughly clean the condenser, It may not look dirty, but it is. If you can access the evaporator, clean that too. Finally, close the curtains and roll down the shades1. Is a 6 year old 19 SEER Central air conditioner still considered energy efficient or is it time to upgrade?A six year old system should be in great working order. If it has been well maintained and it has not suffered environmental abuse then, it should last 9-14 more years. 19 SEER is in the top 2/3 of available efficiency today. Conversely, in 5 years time who's to say though.Typically manufactures warrant parts for up to 10 years from date of install. These warranties do require registration of the product with the manufacture (something a majority of contractor fail to do, ultimately it is the homeowners responsibility). If you have purchased the home recently, in some cases the warranty is transferable to the new owner (call the installing contractor to find out).As with any mechanical piece of equipment it is always a good idea to protect your investment by having a certified HVAC professional maintain the equipment at least annually.Example of extreme damage most likely due to an animal urinating on a condenser coil. This kind of damage is not covered by warranty, and would necessitate replacement of at the very least the outdoor unit.Hope this helps.Is a 6 year old 19 SEER Central air conditioner still considered energy efficient or is it time to upgrade?Is A 6 year old 19 SEER Central air conditioner still considered energy efficient or is it time to upgrade?2. Sears wants about $7000 to replace a central air conditioner in Connecticut?Sir, Sears has the biggest markup there is. period. You can get down to almost half that with three bids.3. Which Central Air Conditioner should I go with? Is the 16 Seer worth the extra $1800?I would stick to the Trane unit. The units can only become so efficient and after that, the change becomes so minimal it does not make sense to go higher. I believe our AC increases our bill $30 a month when we run it. Even if you run it for every month, it will take almost 8 years for it to pay for itself. Trane is a more common name and service people should be more comfortable working with them if you ever need. See if Trane offers a higher SEER value, I am sure they do. If it is more sensible than $1800, I would think about it. By the way, are these installed prices? Is it only the condenser portion or do you need a new A Coil as well?4. Which is cheaper to run on a central air conditioner system? Just the system or with both the system and fan.The fan switch is for running the fan continuous. Regardless if the heat or cooling is switched on. If your heating or cooling is uneven throughout the house it might be an advantage to run the fan continuously to circulate better, or if you have allergies and have the better filters it would help keep the air cleaner. Otherwise it will be more expensive to heat and cool with it on because of the electrical consumption of the fan.5. my central air conditioner started leaking water from a plastic hose outside the house. whats up with that?My central air unit leaks when the temperature outside the house is close to the temperature inside the house. Typically at around 72 degrees, which is what we keep the house temperature at. I am not sure if the unit leaks outside, it probably does, but it definitely leaks inside the house from the 2 hoses which go into the basement floor (to a sump I guess). This is an old house, but I've only lived here for a few months, so I do not know all the Idiosyncrasies of the AC unit. It did freeze over once and stopped generating cool air. I would really appreciate your insight on this as it differs slightly than the original question.6. Comfort Maker Central Air Conditioner - what do you think of this brand? Is it Crap or Good?Who makes this model. Sometimes name brand manufacturers make cheaper models and use other brand names. They are usually lower quality low end models
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