Questions and Answers for Master Flow 1250 CFM Weathered Wood Power Roof Mount Attic Fan

A:  It needs to be wired into the junction box

A:  It could, but you would to run the electrical box up there.

A:  These units are designed to be hardwired by an electrician. Mike

A:  This product must be hardwired to your house electrical system. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

A:  The fan comes with a thermostat in a junction box. You direct wire from the fan to the thermostat and from the thermostat to the house wiring. Then set thermostat to attic temp and fan does the rest

A:  A fan can only control temperature in the immediate sence, but if your attic is under insulated or not insulated: lowering the temperature in the attic will also help reduce humidity caused by cold air conditioning air getting into the attic and mixing with hot humid air and turning it into water that can cause mold and rot in the attic. Generally speaking, without the other necessities though the fan will not be enough to control the humidify.

A:  The ERV5WW comes with a thermostat only, an optional humidistat can be added. The ERV5WWHT, the HT standing for Humidistat/Thermostat combination comes with both. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

A:  This is not the solar powered version. This fan requires a hard wired power line.

A:  No, this fan wires into a household current thermostat.

A:  No, this is an electric fan that runs off of typical house voltage. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

A:  No

A:  Master Flow attic fans use sealed bearings, no oiling required. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

A:  The motor does not provide a CFM rating the 1000 is the revolutions per minute of the motor. The motor and the type of blade determines the CFM rating. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

A:  It is capable of moving 1250 cubic feet of air per minute. Evidently a 1000 revolutions per minute motor is required to do this.

A:  You will need some caulking and maybe some roofing nails long enough to go through however many roofing layers you have and into the sheathing.

A:  You will need to hook up electric to the thermostat, local codes may require a connector that is not supplied. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

A:  Not really 20 to 25 sq roof all you need is 3 or 4 turtle vent and one of this and you good to go you will have enough ventilation for your roof

A:  It is a complete set up. All you need to do is run a dedicated power to the thermostat

A:  The hole in the roof is 15" diameter, the same as the one it replaced. The cable from fan is terminated in metal box that contains the thermal switch that turns on the fan when the attic temp reaches the temperature you set. You run your power cable (Romex), to this box. In one youtube video I watched, they connected the fan to a plug ended power cord, after they cut off the receptable end to strip the wires for connection to the fan's metal box. They did this so they could pluig the fan into a nearby outlet, but stated that their fan's instructions said don't use a power cord.

A:  It is built to be hard wired. Run a dedicated circuit to the supplied thermostat. Included in the fan is protected wiring from thermostat to fan motor. Cut 10 inch round circle throigh roof sheeting. Fan has approximately 16 inch flat metal base that fastens to the roof sheeting

A:  Probably China, if not there Taiwan, if you read up on them on google you’ll find that the ones made in China are better quality! Mines been up about eight years now and no problems.

A:  The cover is galvanized steel. Mine came slightly dented but was able to pop back out easily.

A:  This product is made from Galvanized steel, including the hood. If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.

A:  Mill is the color(aluminum/silver), It is a "Power Roof Mount Attic Fan". If you have any other inquiries about our Master Flow products please call Technical Services at 800-211-9612.