A furnace cold air return typically needs at least 6 to 12 inches of clearance from any obstructions to ensure proper airflow. This space allows for adequate air circulation, which is essential for the efficient operation of the heating system. Additionally, local building codes may specify minimum clearance requirements, so it's important to check those regulations as well.
YES! If you do not have a cold air return on your furnace, you will have much higher heating bills as you will not be circulating the cold air from your home back to the furmace to be heated again.
The cost is determined by the size of the grille. $.40/square inch
Not really, there's not much airflow when the furnace is not running.
price of a guardian furnace
Out of the Furnace grossed $14,912,695 worldwide.
Need to know how much clearance where.
Out of the Furnace grossed $11,330,849 in the domestic market.
50%
18000 volts clearance
that would depend on the size of the blast furnace.
The manufacturer's cam card will tell you how much clearance, and whether the clearance is measured hot or cold. From the point when the #1 cylinder is at TDC you can set 1, 2, 5, and 7 intake valves and 1, 3, 4, and 8 exhaust valves. Rotate the engine one revolution and set the rest.
Call an electrician; something in the furnace, possibly an electric motor, is using too much electricity.