Good point. Thank you.

First off, thank you for the advice.

The reason the handyman gave for installing two fans was basic, to improve the dispersal of hot air. My partner and I concluded that removing heat would be the most effective first step to decreasing the temperature of the house, but we can be talked into considering insulation first. We’ll look into leak patching and into insulation.

Do you happen to know if during the winter months, if insulation would significantly block the house from being heated by the sun? We are looking to get a heat pump in the long run and originally planned to have the insulation done at the same time, but in the meantime, winters can get cold here and any heat we get goes a long way.

So the product he is installing, on Amazon, says it runs off 120 volts. Here is the link to the amazon listing.

https://www.amazon.com/Master-Erv6smww-Power-Mount-Ventilators/dp/B01AA6Y2YS

I appreciate your comment, and I agree and understand that some appliances function better off of 240 volts, but with this extra context, wouldn’t this particular fan not benefit from a 240 volt line because the unit is only rate to operate at 120 volts? I believe this would damage the fan, or outright destroy it.

Each fan would be 1500 cfm. I’m guessing the attic is about 3500 cubic feet.

I forgot to say this, but the current circuit, as far as I can tell, doesn’t connect to the breaker box. The lines are dead and the attic ventilation fan hasn’t worked since we bought the house. The fan doesn’t spin smooth when manually rotated, so we assumed it needed replacing.

The handyman originally insisted on installing a 240 volt wiring and circuit breaker. I don’t know much about electricity but that set off red flags. I have no problem going with higher gauge wiring if the cost is cents more, but there is no reason to run that many amps unless we’re plan on charging an electric car in the attic.

Thank you for your comment.

The fans only would remove air from the attic. I didn’t consider the seals. I’ll make sure to bring up the air exchange points when I talk to the handyman again, but I’m considering dropping him. Thank you for your comment.

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