Electrical Savings After Insulation Install

If you have your old electric bills then just compare the kWh consumed.

 

Where was the insulation installed? What type of insulation?

 

My commercial rate dropped this month back to the same price as March and April rates. 9 PHP/kWh

 

Yes the rates dropped a lot.
Noreco was charging customers for something they should not have. I think they were trying to retire some debit or other.

 

This is all good stuff and many would consider doing the same for such a large reduction in energy bill.

I also wonder about having a hole cut in the roof and having a vent installed at the top most point. Of course the vent has to be protected from ingress of rain and as many types of animals as possible.

The issue that bothers me most is having a local 'builder' cut my roof and install a vent, only to fail to waterproof the joint properly. Has anyone had such a vent installed (or had one on the house when they bought it) or know of reasons why this is not a good idea?

 

I'm by no means an expert but I'm thinking that such a (basically ventilation) measure might/should work to reduce the temps in the house during the hottest parts of the day, but am not so sure it would work when combined with aircon. Because yes, the warmest air will still rise to near the top of the roof, but if your rooftop ventilator pushes out more air than the airflow that the aircon provides then any and all non airtight other spots in the house will start sucking in hot air from outside (think doors etc.).

 

The roof is sealed from the living area of the house and so my thinking is that the very hot air in the roof-space would go out of the top vent (by natural methods and not assisted by a fan) and new (relatively cooler) air would come in via the vents in the soffits. This should cool the ceilings and so make the house cooler.

If the house has an open roof (i.e. no ceilings) then the aircons will create a cool level of air lower down (due to the density of cold air) and push the hot air higher and out of the vent (that cool air is not likely to reach the vent itself) - but if I was doing that I would think more about the flows. My idea is for a house with ceilings and a separate roof space.