If it is gas, the most common problem is the thermocouple. This is what keep the gas valve open. It is a small silver looking wire, 1/8 of an inch diameter that runs from the gas valve to the pilot light. The pilot flame should touch the end of the thermocouple. Of course it can be a lot of things. Power, there can be a fuse at the furnace that may have blown. There will be a box with a light switch and a screw in fuse. The switch may have been thrown.
you would have to bypass the heater core first.
Defective heater resistor pack.
Replace the resister, if that doesn't work replace the blower motor.
You can get an outdoor heater at almost any home improvement store. I would try Low's, Home Depot, or another store of this sort. They shouldn't be too expensive.
Those are rarely used in homes. However, if you have one, it would likely be in the basement or near the water heater and storage tank. Most home water heaters work by convection, but if you have an industrial coil type water heater, you'd need a pump.
you probably have a blocked heater tap. the heater cools down and there isn't enough coolant flow through the heater tap to keep it warm
A hydronic heater works by using a boiler system to heat the water and then is pumped throughout the house in order to heat the specific area of a home.
They are entirely different systems. One does not control the other. You have a problem in your heater core, heater control, water circulation or hoses.
Your heater fan resistor module requires replacment
A Ford Mustang does not have a heater coil. You must be thinking of your home HVAC.
Regular home owners insurance does not cover a water heater. If it leaked and damaged the floor, carpet, walls or furnishings, those would be covered, but not the heater.
yes unless you're on the darkside on the moon