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Attic air conditioner drip pan installation falls under the IRC (International Residential Code) and UMC (uniform Mechanical Code) regulations. Like with any building codes, check with your local building department if any or all of the…

Where to install a smoke alarm detector and its positioning are as important as having this life saving device installed at all. Remember that placing a smoke detector in a wrong location might delay its response to smoke or even prevent it…

Well, there's no specific building code requirement for the bathroom vent location / exhaust fan installation. You can have it almost anywhere on the ceiling or wall (floors are forbidden due to possibility of vent flooding). The…

Bathroom vent CFM calculator uses 3 stage formula located below. It is based on HVI (Home Ventilating Institute) guidelines that recommend approximately 8 room air exchanges per hour  for a bathroom under 100 square feet of area. CFM –…

The following information does not apply to a tankless type water heater power vent systems. PVC vent pipes can be used only with water heater power vent /exhaust motor equipped hot water heaters also known as an induced draft gas…

During my inspections, I have been asked many times about stains on walls, also called ghost marks, soot deposits / dust marks and water marks on walls interior surfaces. Since there was usually a mold concern in my clients’ questions, I’ll…

There's more about the water heater vent pipe in my article below the video. Follow the links to skip down for more important information. Water heater vent pipe draft hood Water heater vent pipe material Water heater vent pipe…

Refrigerant Line Insulation Refrigerant line insulation is partially responsible for the efficiency of your air conditioning system operation. Two different diameter copper refrigerant lines, run between the air conditioning system…