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Search: Posts Made By: mackstann
Forum: Conservation 08-24-15, 01:24 PM
Replies: 7
Views: 2,820
Posted By mackstann
Is it actual insulation or is it being repurposed...

Is it actual insulation or is it being repurposed from some other use? If it's not rated as insulation then it may lack fire retardants and it may not be approved for this use -- not to mention being...
Forum: Appliances & Gadgets 08-12-15, 04:51 PM
Replies: 24
Views: 7,302
Posted By mackstann
I've been on the exact same search. Yamaha...

I've been on the exact same search.

Yamaha makes some receivers with low standby power. Google "yamaha receiver eco friendly standby" and peruse the various models. They claim to use a fraction of...
Forum: Appliances & Gadgets 03-26-15, 01:09 PM
Replies: 13
Views: 4,434
Posted By mackstann
A pressure cooker cooks quickly, so it would not...

A pressure cooker cooks quickly, so it would not be a slow cooker at all.
Forum: Conservation 03-20-15, 01:44 PM
Replies: 11
Views: 7,267
Posted By mackstann
XPS is actually blown with HFCs that don't harm...

XPS is actually blown with HFCs that don't harm the ozone, but the issue is their global warming impact is about 1000x that of CO2. I looked at using XPS for my basement floor and the global warming...
Forum: Conservation 01-30-15, 03:37 PM
Replies: 3
Views: 2,713
Posted By mackstann
Damn. I realized that the per-kWh number I was...

Damn. I realized that the per-kWh number I was using for standard billing was too high. Re-running the corrected number turned the equation around and it looks like I'd pay more (~$70 more during the...
Forum: Conservation 01-30-15, 01:52 PM
Replies: 3
Views: 2,713
Posted By mackstann
Time of Use electricity billing - my findings

I've been looking at my utility's time of use billing option, and it wasn't clear if I would save money or not. The off peak times are at night, and certain periods of the day depending on season....
Forum: Geothermal & Heat Pumps 01-30-15, 01:37 PM
Replies: 12
Views: 5,293
Posted By mackstann
I think a garage location is pretty ideal...

I think a garage location is pretty ideal already.

If you duct only the output of the WH to the house then the output air may not actually be cool enough to help. GE says you should only do this...
Forum: Geothermal & Heat Pumps 01-27-15, 01:47 PM
Replies: 2
Views: 4,578
Posted By mackstann
New ducting kit for GeoSpring water heaters

Along with the new 80 gallon GeoSpring, GE announced their new ducting kit. It works on all the existing US-made GeoSpring models.

Link: http://products.geappliances.com/appliance/gea-specs/GVK8HS...
Forum: Renovations & New Construction 01-22-15, 02:23 PM
Replies: 80
Views: 23,360
Posted By mackstann
ctgottapee is mostly right. Radiant barriers do...

ctgottapee is mostly right. Radiant barriers do work but their effect is modest and generally not worth the cost. Foil on foam is fine though, because it doesn't generally add to the cost....
Forum: Conservation 12-15-14, 05:19 PM
Replies: 8
Views: 2,873
Posted By mackstann
As far as I know it's like the standard Great...

As far as I know it's like the standard Great Stuff except it has a bittering agent to deter rodents from chewing through it.
Forum: Appliances & Gadgets 09-18-14, 12:16 PM
Replies: 18
Views: 5,790
Posted By mackstann
I've thought through these possibilities before. ...

I've thought through these possibilities before. There's a great article on GreenBuildingAdvisor: http://www.greenbuildingadvisor.com/blogs/dept/musings/alternatives-clothes-dryers

But I don't...
Forum: Appliances & Gadgets 09-17-14, 07:08 PM
Replies: 18
Views: 5,790
Posted By mackstann
I've read that it really doesn't matter. The heat...

I've read that it really doesn't matter. The heat and moisture loss have a linear relationship, so there is nothing to gain by changing the temperature, energy-wise.

I'm sure there are minute...
Forum: Renovations & New Construction 09-17-14, 07:04 PM
Replies: 13
Views: 5,268
Posted By mackstann
A well insulated basement won't cost much to cool...

A well insulated basement won't cost much to cool in the summer. It still benefits from the ground because the delta T on the floor will be very small during summer. The difference is that you will...
Forum: Geothermal & Heat Pumps 07-22-14, 07:23 PM
Replies: 16
Views: 13,345
Posted By mackstann
Since it can only go down to 2200BTU/h, when the...

Since it can only go down to 2200BTU/h, when the heat load is lower than that, it will cycle on/off repeatedly, which is bad for efficiency and maybe equipment durability over the long run. It isn't...
Forum: Conservation 06-10-14, 07:15 PM
Replies: 575
Views: 713,852
Posted By mackstann
I've been thinking more about design. I...

I've been thinking more about design.

I originally wanted to make a counter-flow HX, for maximum efficiency, but it seems like sealing up the alternating channels at the ends would be really...
Forum: Renovations & New Construction 06-10-14, 11:42 AM
Replies: 13
Views: 5,268
Posted By mackstann
I think you're fine not insulating the floor. The...

I think you're fine not insulating the floor. The energy savings is pretty small compared to insulating the walls. Most of the energy loss in a basement is to the outdoor air and the upper surface of...
Forum: Conservation 06-09-14, 11:30 PM
Replies: 575
Views: 713,852
Posted By mackstann
I just got my hands on about 8 cubic feet of...

I just got my hands on about 8 cubic feet of coroplast for free through Craigslist. I wonder how big the heat exchanger needs to get before diminishing returns just make it ridiculous? IIRC that...
Forum: Geothermal & Heat Pumps 01-16-14, 12:23 PM
Replies: 4
Views: 3,482
Posted By mackstann
I was lured by the simplicity and freeness of the...

I was lured by the simplicity and freeness of the GE GeoSpring HPWH. Oregon offers a $600 tax credit, which combined with the federal tax credit and a 10% off Lowe's coupon, made it free.
Forum: Appliances & Gadgets 09-05-13, 06:04 PM
Replies: 2
Views: 3,122
Posted By mackstann
You could make an insulation "blanket" out of...

You could make an insulation "blanket" out of Roxul (with no worries of fire), but it probably wouldn't be very durable or convenient to use.
Forum: Geothermal & Heat Pumps 06-17-13, 01:05 AM
Replies: 4
Views: 3,482
Posted By mackstann
Hmm, looks like this has been done before. I...

Hmm, looks like this has been done before. I can't post a working link yet but see here: oikos.com/esb/41/eahpstudy.html
Forum: Geothermal & Heat Pumps 06-17-13, 12:52 AM
Replies: 4
Views: 3,482
Posted By mackstann
Heat pump water heater + bathroom exhaust fan

I've been reading Xringer's thread about his Airtap and am thinking about getting the similar Nyle Geyser HPWH with a Marathon tank. I figure this combo could easily last decades. Our tank is brand...
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