It’s been about six months since my last roundup of new green building products. This time I’ll look at two ventilation products (an HRV and a fan), a pressure-balancing grille, and an inexpensive camera to inspect difficult-to-reach areas. I’ll also mention four new North American distributors of European Passivhaus-certified windows.
The first product, the Venmar Eko 1.5 heat-recovery ventilator, isn’t really new — in fact I mentioned it months ago in a previous blog (HRV or ERV?). But when I saw this very efficient HRV at a trade show recently, I decided it was worth highlighting.
The main virtue of the Eko 1.5 is the fact that it uses very little electricity. Powered by two electronically commutated motors (ECMs), it draws only 24 watts at low speed to deliver 49 cfm. According to the Home Ventilating Institute Product Directory, this HRV has a sensible heat-recovery efficiency ranging from 64% at -13°F to 75% at 32°F at 49 cfm.
The Venmar Eko 1.5 is also available with an ERV core. (However, it you’re looking for an efficient ERV rather than an HRV, you’ll probably choose the UltimateAir RecoupAerator 200DX, not the Venmar Eko 1.5).
A Taiwanese manufacturer, Delta Products, is challenging Panasonic with its new line of energy-efficient bath exhaust fans.
There are several models of Delta Breez bath fans. The smallest model, Model VFB25AC, draws only 7.1 watts to move 80 cfm, and has a very low sone rating — only 0.3 sone. If the Delta Breez specs are to be believed, this model uses less energy than the Panasonic WhisperGreen FV-08VKS1, which draws 11.3 watts to move 80 cfm.
The Delta Breez VFB25AC is available for $85.80 from Energy Federation Incorporated. For $92.56, EFI also stocks a more powerful model (the Delta Breez VFB25AD) with the following specs: 110 cfm, 18.5 watts, 1.2 sone.
As typically installed, most forced-air…