My air conditioner comes on and blows hot heat. the compressor is not turning on my 2003 Honda. Could the compressor have gone bad or ios their other things to check?

Not necessarly, have the pressures checked on your ac system, that will determine if the compressor is weak. Could be you have a blend or an accutator door not opening for it to blow cold air, or several other reasons.

Probably, to be sure make sure the compressor is coming on. With the engine running turn on the ac and watch the rpms, they should drop for a second if the compressor is coming on. If so you just need to recharge, the refrigerant is R-134a, which you can get from your local parts store along with the kit needed to charge it. The kit will come with detailed instructions and is a pretty easy job.

It still seems that you don't have enough refrigerant by what you have explained .Anyway you look at it the a/c system is leaking way above what is normal for your honda.you need to get some gauges and place a small charge of refrigerant with florescent dye in it (you can buy this at your local parts store)and use a ultra violet light (This also you can buy this at your local parts store)and check to see where the leak is coming from at connections of hoses and around the compressor.This will tell you it is leaking and where and what further action needs to be taken.

It sounds to me like the relay could be bad. Maybe needs a new compressor.

It sounds like a stuck gate/flap/door. This takes some time and effort as you may need to dig into the cars Heating/AC plumbing.

start car.turn on air conditioner high cool .raise hood look to see if the compressor clutch is engaged and running.if yes your ac air door could be stuck closed or the air door vacuum actutator not receiving vacuum.a vacuum line is broken or off. or the control switch bad.that control the AC and heater mode. if compressor clutch is not engagged.check for power at compressor clutch.if yes compressor clutch coil open. or the air conditioner refrigerant R 134 is low take car to a private garage with a good reputation. they wont be expensive as the dealership.have them hook car air conditioner to a manifold gauge set to check your refrigerant low side and high side pressure.

Hi there. When a compressor is replaced, two things are in fact being replaced - both the compressor and the refrigerant (Freon) and if the problem is resolved as a result which of those two replaced elements caused the original problem? Well you will never know and so before the compressor is replaced you need to have you’re A/C system recharged – it’s by far the most cost effective initial thing to do. In general A/C systems loose at least 10% of their effectiveness each year through loss of refrigerant and so given the age of your car; it’s the first thing to focus on. A professional A/C centre will also be able to tell you whether your compressor is working properly after having a refrigerant recharge by the monitoring the operating pressures in the A/C system.

Check the fuses/relay for the compressor. If good, bypass the pressure switch. If the compressor comes on, there is too little internal pressure. Have the system evacuated and recharged. If the compressor does not come on, it could be bad.

this means that your a/c has a leak somewhere in it....or the a/c compressor has gone bad.....you can check the a/c charge with a guage you can pick up at your local automotive store. if the charge is good then chances are that your a/c compressor is bad....kindof a costly fix.

try jumping the low side pressure switch on the accumulator if compressor comes on then it is this switch bad.
when you say blowing hot air is it blowing heated air?or just warm due to compressor not kicking on