Aircraft fluid lines are usually made of metal tubing. or flexible hose. Metal tubing (also called rigid fluid. lines) is used in stationary applications and where long, relatively straight runs are possible. They are widely. used in aircraft for fuel, oil, coolant, oxygen, instru-. ment, and hydraulic lines. Flexible hose is generally. used with moving parts or where the hose is subject. to considerable vibration. Occasionally, it may be necessary to repair or replace. damaged aircraft fluid lines.
* Note excessive heat. If it's 90 degrees outside, the attic temperatures shouldn't exceed 110, according to home inspector Jamison Brown of AmeriSpec Home Inspection Services in Poquoson. However, more often than not, around here I find attic temperatures to be in excess of 125 on a 90-degree day, he says.
In Pennsylvania a high-efficiency air conditioner alone can get you up to $300, and a high-efficiency complete HVAC system can see up to $1000. Maryland's incentives get up to $1,250, with a $100 rebate on a tune up of an existing system. Attic fans ($350 - $800) : Used mostly to cut down the amount of heat in your attic, these are good for homes that don't get cold, frosty winters and want to cut down their air conditioning use in the summer. 2  Attic fans are great for getting the humidity out and cutting down moisture above your ceiling.