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1 Answer

Need some unbiased input on these 2 proposals

So I've gotten 2 proposals from different geothermal contractors and I just wanted some unbiased opinions on the work and equipment. Both proposals came in at around 40k so there's no huge up front cost benefit from one over the other.

Company A is proposing a 3 ton Hydron YT Series 2 Stage heat pump
Full Load: Cooling 41,200 BTUs at 20.9 EER, Heating 29,100 BTUs at 4.5 COP
Part Load: Cooling 31,500 BTUs at 31.3 EER, Heating 23,300 BTUs at 5.1 COP

Company B has 2 options, a Waterfurnace Series 5 single stage model 030 or double stage model 038

Asked By milhouse21386 | Jun 20 18
7 Answers

Building code requirements for stacked window headers, bracing, and stucco over foam

We are building in climate zone 5 and the county currently enforces the 2009 IBC & IRC.

We prepared a list of questions for our building inspector, some of which are location specific, but since we have gotten no response we figured some of this is probably common knowledge.

1. Do non-load bearing walls require structural headers?
2. Can vertically stacked windows of the same width share a header and king studs?

Asked By Zane Bridgers | Jun 17 18
3 Answers

Carbon monoxide detectors in a fuel-free house?

Just a quick sanity check here. Our house will have no fuel burning devices (also no garage), so code requires only smoke detectors, not combination detectors. Is there any reason at all to have them? The cost difference is fairly small, but if they are completely pointless then I will leave them out. Is there any other possible source of CO?

Asked By Trevor Lambert | Jun 20 18
12 Answers

Do I need an HRV/ERV for a house built in 1947?

I have a three-bedroom house, one bathroom, in Worcester, Massachusetts. It was built in 1947, and measures 1,100 s.f.

After purchasing it, I decided to upgrade the insulation in the walls and in the attic and air seal the home, and install new windows. All which was done through the Mass Save program. After completing, all the energy bills went down.

But the problem now is the house has high humidity and seems to be too tight and cause hard breathing. I have noticed mold that I did not have before. Also get headaches more often than I used to.

Asked By Will82 | Jun 14 18
8 Answers

SCIP, SIP, CMU, ICF?

Hello all.

I am building a house in a hurricane/northeaster prone area of Virginia, and in an area that has potential for flooding to boot.

Keeping in mind that i dont have an unlimited budget, what do you think would be the best long-term, flood resistant, hurricane resistant home?

I love the idea of SCIP, but im not sure i can find skilled shotcrete people and the cost looks prhibitive

I like SIP, but i worry about flooding and hurricane resistance.

Im leaning towards ICF, but thinking it may be cheaper (and maybe "just as good") to just to build CMU with foamboard

Asked By user-7043474 | Jun 20 18
3 Answers

Single mini split for AC?

Looking for feedback on adding AC to a ~1600 sq ft ranch in central NJ. Current setup is a window unit in the bedroom and a 1980s 220v beast of a wall unit in the dining room. Together they do alright in those worst weeks but for the most part we've just been toughing it out. I'm on a well shaded lot and the house stays reasonably cool during the summer, but also a bit damp. So hoping to dehumidify with the AC and of course cool the place down during the hottest weeks of the year.

Asked By jeffesonm | Jun 20 18
6 Answers

Re-sealing failing SIP roof panels

We have a 7 year old SIP panel over a timber-frame home. We have noticed for several years significant condensation of moisture to the point of dripping from light fixtures and ceiling fans located in the peaks during hot summer days. Roof is a stone-coated metal shingle panel over Grace Tru-flex underlayment.

Asked By Passagyrs | Jun 19 18
20 Answers

HRV / HVAC engineering help in Ontario

My building inspector came to do my HVAC rough-in inspection today. After he had ignored my e-mails and phone calls for 2 months, I gave up and just bought the Zehnder unit I wanted. The last thing he had said to me was he was "sure it would be fine", and he'd call me back in half an hour (which he never did, called him again and got another promise of a return phone call that never happened). So now he claims he sent an e-mail telling me the Zehnder didn't meet the Ontario building code, and needs a report from an engineer to allow it to pass.

Asked By Trevor Lambert | Apr 26 18
2 Answers

Attic open-cell foam: off-gasing / odor

We have a traditional 1966 two story home, dual-zoned home in Atlanta (zone 3A). On April 18th we had our existing inadequate fiberglass insulation removed and open cell foam installed in our 1200 sq ft attic. We have had odor / off-gasing problems since. On cool, cloudy days it’s not very noticeable but on hot, sunny days the odor is quite pronounced and our second floor A/C (handler in the attic) is not usable as it blows in the odor/gases. We’ve been living with open windows and fans upstairs since. The odor is closer to the paint-like I have read about, not the fish-like.

Asked By User-7075353 | May 22 18
9 Answers

Is there any way around putting a heat source in every bedroom?

I was speaking with an HVAC guy in my area today who reminded me that code says we have to have a heat source in every bedroom. We're planning on putting a single head ductless minisplit in our 1450 sf high performance home (to be built next year). Are there other exceptions/solutions out there, or do I just stick a Cadet heater in every bedroom and disconnect them after the inspector checks it off his list?

Asked By Alyssa Hoyt | Feb 4 16
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