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Prefab House Interior Framing Complete, We Turn To Systems

We spent a lovely few days in the prefab house kit... the interior framing is done, and now I need to turn Handsome Husband over to guest blog, because I have zero interest in procedures of interior construction, I just want to move in.

The off grid prefab catches the breeze. We never would have camped here in the summer, but now, with shelter, we are comfortable even on hot Virginia days. That is not to say we're anything close to air conditioning; but remember, I always set the air conditioning to 82 degrees in our existing house regardless; each time I checked the temperatures in the prefab house kit it hovered between 75-80 degrees in the afternoon. And the breeze... we picked a great spot for the house kit- it sits on a high area, the wind sweeps up the road, funneled by the trees, right to the house kit, and sways gently through it.

I encourage you to go through our prefab house kit exploits in the photos above, the pictures have a lot of comments on them; I am a little tired from the weekend to write much more!
: )

Some of my favorite moments included visiting Mrs. Esh at her Amish store and running into our friend George there, wandering off to pick wildflowers, then returning to the prefab house to find Ron & Judy sitting at our picnic table... they had taken some time off from their weekend to stop by and it was great to see them.

If you recall, in order to finish the off grid prefab house kit we needed to get the framing done, then give Ron a systems list so that he can get quotes from the plumber and electrician, at which point we apply for a loan to finish off the remainder of the house.

Well, last night Handsome Husband finally sent Ron the systems list for the off grid, zero energy house:

Here is the list of systems we would like installed in the off grid modern house.

The casa ti shell you have erected for us provides a passive solar design with a highly-insulated building envelope.

We chose a concrete slab as the foundation to provide a thermal mass to store heat both from the solar radiation and hydronic heat delivered via solar hot water collectors.

In addition we want to power the systems and our extremely basic power needs exclusively via a photovoltaic system.

Our water supply will stem from rainwater collection, purified physically and by Ultraviolet light.

We will have a composting toilet (not mentioned below as it is already on site) with liquid waste running to a septic field that will also absorb the kitchen sink drain while the shower and vanity will drain as gray water to our orchard.

Here are the parts lists for the systems, I would like to meet with you as soon as convenient to go over this:

Solar Power:

Qty Item Price Extended
4 Mitsubishi MF125 Module $ 595.00 $ 2,380
1 CHARGE CONTROL: Xantrex C40DD $ 146.00 $ 146
1 TriMetric Battery Meter
C- 40R/50 Remote Digital Display with 50' cable
$ 115.00 $ 115
4 Trojan T-105 6V 225A Battery $ 135.00 $ 540
24V 2400W 100A
$ 995.00 $ 995
1 I- TEMP plug in battery temp sensor $ 29.00 $ 29
2 36" interconnect cable w/ fitts $ 18 $ 36
2 10' 10ga combiner cable $ 20 $ 40
1 Outback Combiner box $ 125 $ 125
2 Outback 15 amp PSPV breaker $ 12 $ 24
2 DC Lightning Arrestor P-31 $ 35 $ 70
2 AC Lightning Arrestor P-31 $ 35 $ 70
1 4/0 inverter cable set 10' $ 140 $ 140
4 16" 2/0 battery interconnect $ 12 $ 48

solar power total
$ 4,758


Qty Item Price Extended
2 Stiebel Eltron SBB 300 S
80g sgl exchg tank (heat)
$ 1,000.00 $2,000.00
1 Stiebel Eltron SB 150 S
40g sgl exchg tank (DHW)
$ 560.00 $ 560.00
2 Bosch AquaStar 1000P tankless propane
this would be installed behind a mixing valve
one for DHW and one for heat
activates above 0.5 gallons per minute (gpm)
$ 350.00 $ 700.00
1 water pressure tank
$ -
2 2 zone, 3 loop ea. Manifold
Mr. PEX 103B-50P - 3 Loop Radiant Heat Manifold Package (1/2" PEX)
$ 174.95 $ 349.90
1 water supply pump
$ -
2 TACO 007 Ciculator for Zone Heating Circulation Performance Data
Flow Range: 0-20 GPM
Head Range: 0-11 Feet
Minimum Fluid Temperature: 40º F (4º C)
Maximum Fluid Temperature, Cast Iron: 240º F (115º C)
Maximum Fluid Temperature, Bronze: 230º F (110º C)
Maximum Working Pressure: 125 PSI
Connection Sizes: 3/4”, 1”, 1-1/4”, 1-1/2” Flanged

The Taco 007 Cartridge Circulator is designed for quiet operation in a wide range of applications.

Available in cast iron or bronze construction with universal flange-to-flange dimensions.
Unique, “00” family replaceable cartridge contains all of the moving parts so you can service it easily instead of replacing the entire unit.
$ 72.95 $ 145.90
1 TACO 0011 Circulator for Solar Loop Circulation Performance Data
Flow Range: 0-28 GPM
Head Range: 0-30 Feet
Minimum Fluid Temperature: 40º F (4º C)
Maximum Fluid Temperature: 230º F (110º C)
Maximum Working Pressure: 125 PSI
Connection Sizes: 3/4”, 1”, 1-1/4”, 1-1/2” Flanged

The Taco High Velocity Series 0011 Cartridge Circulator is specifically designed for high-head/medium-flow applications in large residential/light commercial closed-loop hydronic heating and chilled water cooling systems.

Exclusive, anti condensate baffle (ACB) protects motor windings on chilled water jobs.
Available in cast iron or bronze construction—Bronze can be used on open-loop systems.
Unique, “00” family replaceable cartridge contains all of the moving parts so you can service it easily instead of replacing the entire unit.
Universal flange-to-flange dimensions and orientation allow the 0011 to easily replace other models.
$ 335.00 $ 335.00

get remaining pieces: valves, thermostat, actuators

water total

Air Quality:

Qty Item Price Extended
1 VHR 1404 Air Exchange Heat Recovery
Ventilator ( 120V 1.4A
(what is difference of SHR 1504 1.5A?)
$ 700 $ 700
5 remote light switches
$ 150 $ 750
5 A-Ceiling Fan 24v
$ 135 $ 675
2 A-Swivel Kit $ 20 $ 40

air quality total
$ 2,165

Rainwater Collection:

Qty Item Price Extended
1 WFF 100 Vortex Filter with extension (2,000 sq.ft.) $ 757.00 $ 757.00
1 Goulds 1/2 hp, 115 volt, Cistern pump, with:
stainless steel base plate,
1 1/4" nozzle,
1 1/4" discharge,
floating filter
$ 899.00 $ 899.00
1 1,700 gallon below ground tank
133" length x
55" width x
66" height
$1,445.00 $1,445.00
1 Purification Kit including
1 x 8gpm UV light,
2 x 20" Big Blue Housings with 1" fitting,
2 x Brackets for Housing,
2 x Wrenches,
1 x 20 Micron String Wound Sediment Filter, Carbon Filter.
$1,475.00 $1,475.00
1 baffle above entrance and root cellar (see landscape drawings

1 root cellar and pump room per landscape drawings

1 downspouts on North matching scupper boxes and method to handle drainage

1 gutters on South, with downspouts routed across baffle at entrance to above ground cisterns

rainwater total


Qty Item Price Extended
5 remote light switch kit - simple
$ 149.00 $ 745.00

miscellaneous total
$ 745.00

Total Systems cost:

area cost
solar power total $ 4,758.00
water total $ 4,090.80
air quality total $ 2,165.00
rainwater total $ 4,576.00
miscellaneous total $ 745.00
grand total $ 16,334.80

We have geared our own zero energy systems list not towards how MUCH we can do, but how little we can use to be comfortable, functional, but not in excess of power needs. Another house kit purchaser, depending on their needs and climate, might need larger systems, but I want to see how comfortable I can be with less... we shall see.

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At 7/28/09, 11:20 PM , Blogger Mothermary said...

Wow, Copeland. It is really coming together beautifully. Thanks for the links to the suppliers in the systems list. I found out so much by following them (like what a manifold was). I am so looking forward to the VMI wood on the walls.

At 9/28/09, 7:57 PM , Blogger Dani Saloli said...

Hello, and thank you for the informative blog. I have a question about the rainwater catchment if that is ok? How will the rainwater catchment work with the kitchen and bathroom areas since they aren't together?

At 12/25/09, 6:14 AM , Anonymous Anonymous said...

I want to quote your post in my blog. It can?
And you et an account on Twitter?

At 2/23/11, 5:30 AM , Anonymous Anonymous said...

thanks for this tips

At 10/11/11, 4:14 AM , Anonymous government grants for solar panels said...

That's a very thorough list you got there. Thanks for the info.


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