The pressure transmitter comes in a number of shapes and sizes. One, referred to as a Bourdon Tube, is designed especially for monitoring non-liquid pressure. They are relatively inexpensive and good for measuring air and gas pressure in compressors. The tubes may be c-shaped, spherical and helical.
Pay for heating technicians can vary significantly by industry. The highest average pay, at $70,920 a year, was reported by those working for electric power companies, according to the BLS. Technicians also earned above average pay in the motor vehicle parts manufacturing industry, at a mean $64,610 per year.
When the thermometer drops, proper air flow reduces attic humidity and improves insulation performance. A contractor will charge $358 to install a 14-inch power ventilator which includes the labor and material; you can do it for more than half and pocket a 65 percent savings. That's assuming you have carpentry experience and don't have a steeply pitched roof.