Ca++
Well-known member
Okay, a bit heavy on the headline.
Many will know, from posts like the 3~ pumps thread, that motors are changing. Like our electric bills.
A typical 1.2 tent uses a 6" fan, rated around 80w. Costs about 70-120 for a proper rvk style.
The new kid on the block, is the EC motor. It uses permanent magnets, which as an instant 30% power saving. It also does better at reduced speeds. Using as much as 70% less at low speed. Lets call it a 50% power saving over the year.
Now it's only saving 40w, which seems like nothing. It's constant though. With finger math, that's 400w in 10 hours, 800w in 20 hours, might as well say per day it's 1000w watt hour, or a unit. A units is capped at 50p, so £180 a year. Not £360.
If buying a new fan set, that original AC fan priced 70-120 needs a speed controller. £20 if you can stand the noise, but 40-50 really. The EC fan costs more than AC fan+controller together, but you do get the controller built-in.
In real terms, I buy from an electrical wholesaler, and the price difference is about £50. The AC fan about £120 (plus controller) and the EC fan about £220. That extra £50 comes back in 3 months. In a year or so, the fan has paid for itself.
A free fan is good, but oddly, the real bonus to the EC fan, I have not even spoke of. It's the noise. You get the same noise of air being ruffled, but not of the electrical noise. Importantly, non of the vibration. Where an AC fan needs elastic cord to hang it, the EC needs nothing. You just get the shuuush of air movement. Set on low, you can't tell they are turned on, unless it's blowing your hair about.
So that's my money saving tip, to guide you towards the seemingly expensive fan, that will in turn, rock your world with it's lack of buzzing and vibrating.
To set you off, the 'vents' brand offer a cheap one. If you want to buy cash, The usual ventilation specialists have them. Perhaps not your local hydro store though, who just sell the cheap stuff with big mark-up
Many will know, from posts like the 3~ pumps thread, that motors are changing. Like our electric bills.
A typical 1.2 tent uses a 6" fan, rated around 80w. Costs about 70-120 for a proper rvk style.
The new kid on the block, is the EC motor. It uses permanent magnets, which as an instant 30% power saving. It also does better at reduced speeds. Using as much as 70% less at low speed. Lets call it a 50% power saving over the year.
Now it's only saving 40w, which seems like nothing. It's constant though. With finger math, that's 400w in 10 hours, 800w in 20 hours, might as well say per day it's 1000w watt hour, or a unit. A units is capped at 50p, so £180 a year. Not £360.
If buying a new fan set, that original AC fan priced 70-120 needs a speed controller. £20 if you can stand the noise, but 40-50 really. The EC fan costs more than AC fan+controller together, but you do get the controller built-in.
In real terms, I buy from an electrical wholesaler, and the price difference is about £50. The AC fan about £120 (plus controller) and the EC fan about £220. That extra £50 comes back in 3 months. In a year or so, the fan has paid for itself.
A free fan is good, but oddly, the real bonus to the EC fan, I have not even spoke of. It's the noise. You get the same noise of air being ruffled, but not of the electrical noise. Importantly, non of the vibration. Where an AC fan needs elastic cord to hang it, the EC needs nothing. You just get the shuuush of air movement. Set on low, you can't tell they are turned on, unless it's blowing your hair about.
So that's my money saving tip, to guide you towards the seemingly expensive fan, that will in turn, rock your world with it's lack of buzzing and vibrating.
To set you off, the 'vents' brand offer a cheap one. If you want to buy cash, The usual ventilation specialists have them. Perhaps not your local hydro store though, who just sell the cheap stuff with big mark-up