I am moving furnace (and conditioner) to the different location and need to install a new drain for collecting water from furnace/conditioner/humidifier. Is it easy job to do? Any help is greatly appreciated. The major question is how I tap into existing sewage line.

I am moving furnace (and conditioner) to the different location and need to install a new drain for collecting water from furnace/conditioner/humidifier. Is it easy job to do? Any help is greatly appreciated. The major question is how I tap into existing sewage line.

Are there any sewage lines near by? I assume the location of the old system had a drain in the floor where the drain lines from the furnace/humidifier etc just ran into that drain, correct? How far are you moving the furnace. Is it too far to just utilize the same floor drain (if it exists)? Of course, water must flow downhill, so depending on the length of the run, this may be an issue. If there are no drains near by, you can purchase a pump/reservoir. The furnace etc. will drain into that. When full, the pump will move the water through a flexible tub to a sewer line somewhere else. It can also just move the water up the tube until it is high enough to allow gravity to do the rest of the work getting it to a drain somewhere else in the basement. Perhaps I or someone else could be of more help with more details.

HVAC stores carry small pump that will pump out any condensation and overflow water using 3/8" or 1/2" plastic tubing. It is commonly used in situations like yours. With this set up, you can pump water to the exterior of your house. No floor drain is needed for your situation.

If it is possible for you to run a line from where the furnace is going to be move to the outside of the house and at some point outside dig a pit, partially fill it with gravel and river sand and drain the water into it. You would have to insulate the pipe that is exposed to the weather. This would not work if you plan to dump water from a softner back wash into it.

Tapping the existing sewer line depends on what the sewer line is made of. But any material can be cut and a fitting can be installed by using fernco adapters, or something similar, then plumbing it to go where ever you want it to go.

Most codes won't allow tapping into a sewer line for condensate drains for I good reason. I know what happens when 36 air to water heat pumps in a commercial building were done that way.
Sewer gas smells. People get sick.