not very well. a 4 ton system needs about 1600 cfm to provide it's full capacity of cooling. a 3 ton furnace puts out about 1200 cfm. in addition, the evap coil typically attached to the furnace needs to match the tonnage of the outdoor unit. so, the evap coil must be 4 tons. If you currently have a 3 ton furnace and evap coil, the system will not work, and you will most likely ruin the compressor in the outdoor unit.
Half way between the the condenser and air handler, in the liquid line.
you can probably get away with that just make sure you have an expansion valve on the evaporator. An expansion valve will keep liquid from getting back to the compressor.
Yes, a 5-ton AC condensing unit can work with a 4-ton evaporator coil, but it may not operate optimally. The mismatch can lead to issues such as reduced efficiency and potential short cycling, as the larger condensing unit may cool the space too quickly without allowing the coil to effectively absorb heat. It's generally recommended to match the sizes of the condensing unit and coil for optimal performance and efficiency. Always consult with an HVAC professional for specific compatibility concerns.
Installing a 2.5-ton condenser with a 3-ton evaporator coil can be done to optimize energy efficiency or manage specific load requirements. The smaller condenser may reduce energy consumption, as it won't overcool the space, potentially leading to less frequent cycling and improved humidity control. However, this setup can also lead to reduced cooling capacity and may not perform effectively during peak demand, so it's essential to ensure that the system's balance meets the cooling needs of the space. Proper sizing and compatibility are crucial for optimal performance.
It all depends on the efficiency of the unit you want (80%, 92%, 95% etc.), how big the unit is, and what brand you're going with. I recently replaced my gas furnace. We have a 3 ton unit for our house. We went with the 95% eff. unit because we were able to get a tax credit, it cost us a hair below $2500. The 80% unit was $1,400. The 92% unit was $1,800.="h2headingh2"style="color:rgb(0,0,0);"name="it_all_depends_on_the_efficiency_of_the_unit_you_want_(80%,_92%,_95%_etc.),_how_big_the_unit_is,_and_what_brand_you're_going_with._i_recently_replaced_my_gas_furnace._we_have_a_3_ton_unit_for_our_house._we_went_with_the_95%_eff._unit_because_we_were_able_to_get_a_tax_credit,it_cost_us_a_hair_below$2500._the_80%unit_was$1,400._the_92%unit_was$1,800.">
No. It will be less efficient.
3 TON
You may be able to turn up the blower speed but you will probably still not get the appropriate cfm. You may be able to swap out the blower but you may run into problems with fitting the new one in place or the proper sizing of the return and supply duct work.
1.5 ton evaporator
5 ton
4
Installing a 3 1/2 ton condenser on a 3 tr evaporator will not function properly. There isn't enough evaporator coil surface area to absorb heat and vaporize refrigerant liquid for its return back to the condenser compressor. What can be done is a 3 ton condenser unit with a 3 1/2 evaporator coil.
It may run. But not efficiently or to capacity as there will probably not be enough air flow.You also run the risk of ruining the compressor by flooding it, as residential a/c units are notorious for not having hi and low pressure cut-out switches.
No easy answer with the information given. You might be able to increase the blower speed but that probable wont get you enough air anyways. You might be able change the blower depending on your furnace. Depending on the evaporator coil 3 or 5 ton you either wont remove the proper amount of moisture from the air(the biggest part of what makes you feel cool) or there will not be enough air blowing over the coil and it will freeze up. Technically could put a freeze switch to turn of the condenser. Most likely you will wear out the condenser quicker then it should.
You can not do that. If it where the opposite it would work . But you will frezze up with this matchup.
A condenser is typically installed based on 400 square feet per (1) ton. That is, in a dwelling of 1800 square feet, a 4 & 1/2 ton unit, (for air conditioning), will be needed. Any less and the condenser will have to work too hard. Much more and the condenser will over work, (due to start-up and cool down energy overlapping, as well as the excess energy required to run the larger unit), thereby wasting money.
4 ton