Theres a puddle of water coming out the furnace just started

There are several questions that need to be answered about what type of system you have, but i found this posting that may help:
As your gas furnace runs, is there water leaking at the base? Is the furnace's air filter wet, too?There are a few things that could be happening here. But if you have a high-efficiency furnace, here's the most common cause: a condensation leak.
We'll explain why a furnace creates condensation, and what's causing it to leak out of your furnace.
Note: You'll know if you have a high-efficiency furnace if:

• The yellow energy guide tag says your furnace's efficiency is 90% or higher AFUE.
• The vent/flue pipe is white PVC as opposed to metal.

Why a high-efficiency furnace creates condensation
How in the heck does a high efficiency furnace create condensation/water anyway?
It's all about how the furnace extracts heat from combustion gases.
A lower-efficiency furnace extracts some heat from combustion gases and then quickly vents them out the flue pipe.
But a high-efficiency furnace, to extract more heat, has 2 heat exchangers. These allow the furnace to extract heat from the gases for a longer period of time. This causes the combustion gases to cool and then condense.
That condensation then exits out your home through a drain. But if that water is pooling around the furnace, there's a problem preventing it from draining properly.
Causes of a condensation leak around a high-efficiency furnace

• Clogged condensation tubing
• Clogged condensation drain
• Breaks in the condensation line
• Issues with the condensate pump (if you have one)

You'll need a furnace technician to diagnose which of these is the issue and then fix it.
Other causes of leaking water around a furnace
If you have a conventional, standard-efficiency furnace...then its flue pipe may be incorrectly sized.
If you have a whole-house humidifier connected to the furnace...there may be an issue which is causing the humidifier to leak into your furnace. Your humidifier should be getting annual maintenance from a professional to prevent this.

Is this oil or gas boiler,?
is it gas burner or atmospheric ribbon burners?
how much water?
does water go away?

TEMPORARILY disconnect exhaust vent and see if it still does it. If it runs for a few minutes like that, normally your problem is something in your vent pipe. If plastic vent pipe, even a puddle of water, if the pipe is not sloped correctly. Water in the vent pipe has to run downhill all the way to the furnace. If metal vent, probably a clog somewhere.

Check your drain line. It appears that water is not draining and backing up into the furnace. Is there a drain trap? If not or if there is no vent on the drain line there can be a vacuum created when the furnace is running and it actually pulls water back into the furnace and when the inducer shuts off it releases the vacuum allowing the water to drain.

Hello, it sounds like your condensate line is clogged and not be able to drain into the condensate pump or your condensate pan is cracked and leaking. Best thing to do is clean the condensate line with a shop vac and see if the water will start to drain, if not looks like the pan is cracked.

The one drip per second is about correct, it's the water vapour coming from th combustion of the gas that condenses But is shouldn't puddle, it should completely drain immediately so something is wrong there - most likely it was badly installed.
The rest of the puddles are also created by a bad install: an bad seal at the pipes connections.
That nut on top is the safety valve, nothing should go out of there. If there is water seeping from it then the expansion tank is completely full and that is dangerous, it can fail.
I must say that the entire system has been installed by monkeys. It should be dismantled and all the connections redone by someone who really knows how to do it properly.

Neither, even if the solenoid or humidistat stick, it should always drain properly. Is the unit mounted on the cold air return duct or the supply plenum? If it's mounted on the supply plenum, the water panel might be getting blown forward and spilling the water. High efficient furnaces also can leak water on the floor if its drain is restricted. If hum. is mounted on return duct make sure drain is clear by blowing through it. On Honeywell hum's I've seen the rubber hose from the solenoid valve to the distributor tray leak too, check the rubber 1/4" hose.

first you need to determine if the furnace coil is frozen or iced up. The water around the furnace means that the water is not draining where you want it to go. This can be from a blocked drain line or a frozen coil. The fact that the system is not cooling may mean that the coil is blocked. Turn on your blower only and let the air flow warm the coil if it is frozen it will start to melt. The system is then low on charge or the air flow is blocked by a filter or bad blower

You had the condensate from the furnace come loose look for a pvc pipe coming off the furnace it drains the high efficiency heater. I would really check out your hot water heater too.