These are properly known as hydro air systems which is a hydronic heating system combined with the power of forced air.
Hydro air heating system blowing cold air.
1 dead batteries in thermostat.
You may need to remove and down size the heat pump you keep attached to the system.
As hot water heats up the coils a blower then passes air over the coils.
A furnace blowing cold air could be due to your thermostat.
You can hear it blowing but no heat is coming out.
Seems silly but you d be surprised how often this has happened.
The air picks up heat from the coil and the blower fan moves the air out into the duct system which distributes it to your rooms.
This type of system incorporates a hot water boiler either oil or gas fired which heats water and sends it through pipes to a coil in an air handling unit.
Additionally the system can be modified to provide air conditioning.
Again using occam s razor we can assume that the next likely culprit for your heater blowing cold air is your thermostat.
Here are just a few things that could mean.
I have a two story house split by two hydro air systems with hot water coils fed from an oil fired boiler.
Water in the tank seems to heat fine and the output pipes seem hot enough but in last 3 months th read more.
As hot water heats up the heating coil the blower fan sends cold air from your rooms over the hot coil.
Hydro air systems combine water heating and air heating mechanisms into a single system.
I have a gas apollo hydro heat system 50 gal water tank air handler system.
The heat source in a hydro air system is a boiler generally gas or oil fired.
If you have a heat pump attached to the hydro air system it might be that the heat pump is preventing the hydro air system from firing properly.
Otherwise your electric heater or gas furnace will not turn on.
After the water is heated it passes into a small diameter tubing which takes it into an air handler.
The heater s blowing cold or the ac is blowing hot.
Hydro air system blowing cold air after thermostat is satisfied.
The upstairs unit is in the attic and the downstairs unit is in the basement.
Be sure the filter is circulating properly.
A hydro air system is a combination of a hot water and a hot air system.
A blower then sends air over the hot coils to push warm air into your ducts.
In this system an oil or gas hot water boiler heats water which is then is transferred to a coil in an air handling unit.
Ensure that your thermostat is set higher than the temperature in your home.
There are many reasons an hvac heating ventilation air conditioning system might stop working.
But all you have to work with are the symptoms.
The air handler contains a pump hot water coil blower fan and in most systems an air conditioning coil.
