HVAC for garage/shop/studio ?
opaone
5 years ago
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Comments (22)
opaone
5 years agoopaone
5 years agoRelated Discussions
Trying to cut building cost by using cheaper HVAC
Comments (21)heat pumps provide both a/c and heat. in summer it is a/c in - winter it reverses action and provides heat. electric strips are emergency heat for when temps reach 30 degrees and stay there. electric strip is the most expensive way to heat a home. ever used a space heater for a week and seen the increase in utilities?? when heat pump is in heating mode it will at times go into defrost mode..steam will rise from outdoor condensing unit..normal operation. the roi is short with heat pumps they will cost more upfront..about $700 more than a/c with elec strip payback is 2 years in my mild climate. faster in climates with longer heating season. SEER is for the a/c HSPF (heating seasonal performance factor) and COP (coefficient of performance) are heat pump numbers to shop for. Just as you want a 14 SEER, HSPF should be at least 7.5 ARI (american refrigeration institute) posts this info on all matched units, once you have model numbers you will be able to check and see what exactly you are bidding. this is not detailed information, just the headlines as you collect bids ask each company to explain to you what they are bidding. sometimes it is difficult to compare bids when the same efficiency units or same types of units are not the same. best of luck! (and be sure to tell your sheetrock crew that you are not installing moldings so that this area will be taped)...See Moresuper insulated...what HVAC system to pair with?
Comments (15)thanks for the replies. I will try to touch on some of the questions: I am getting about 4 different load calcs, along with my own which include loading my Revit model into Autodeck Green Studio which analyzes everything and produces costs and loads. So once those start to get in, we can compare everything for similarities. For wells, we are building on about 1 acre. However we also need a septic in that space, so that eats up some. The house is modest size, with a footprint of around 58'x36'. There should be space for 2-3 tons worth of horizontal. THe guy digging my basement and septic can also dig trenches for the ground loops. However vertical wells cost around $2k in my area, depending on the depth of course. Most like to size up .5-1 tons worth of well around here. all windows will have coverings on them. I am toying with making the north glass triple pane. it would be roughly 800 for that upgrade for the north windows. According to the cost vs savings, that is a pay off of around 11 years....over high performance duel pane. not sure its worth it at all. I am way ahead to put in some nicer insulated shades instead of the glass. Looks nicer and is more efficient. Any thoughts on the more "DIY" approach? Meaning supply the products and just hire out the install? I have subs that can do vertical wells, grouting and hooking them up to the system for about $2k per well. I am not sure how many I need just yet, depending on the depth obviously. It looks like I can buy everything I need for 8k or less. Plus wells and install costs, I am probably around 15k or less, maybe....See MoreHvac and disconnect box?
Comments (36)I think that Austin and I are looking at the same coin. Looking at the other side, a tradesperson that normally does residential (maybe some commercial) might get a chance to do some industrial work. I am sure that there is some learning or relearning that would need to be done. Some details are going to be different. At that point the decision is to bone up on the most relevant sections, or refuse the job because it is not worth the investment. Here is an example that while might not be realistic, I hope is amusing. An electricain is asked to be a subcontractor for an outdoor pool installation in Barrow Alaska. He's never seen an outdoor swimming pool much less built one. He's a busy guy, booked up for the next 6 months. Obviously, he has never been involved in an outdoor pool installation, but he remembers there are specifics that he does not remember or did not learn the detail. Why should he be familiar with that part of the code? Communication is often all about understanding a different point of view. It is perfectly understandable that someone working in industrial situations that has never considered a residential AC unit might be taken aback that he can't see a dedicated disco right next to it. An experienced person standing right next to him, and the compressor, points to the main panel 45 feet away and says that is is right there. You'd never want to have someone looking around in (line of sight) panels in a plant to find the breaker for a 30 HP mixer that requires shutting off for maintenance once a month or cleaning every day. Heck, you would not even consider using the type of disco used for residential HVAC equipment on a fractional HP motor, It is probably not durable enough. That is not what the situation is for the OP and other homeowners. The breaker as a disco is allowed and it works for me even though it might surprise someone who has not thought about it before. In the same vein, I remember a question, I think, in this forum. As it spun out, the OP suggested that the wires in the romex should be colored to indicate which of the two hot busses that they originated on so that when working far from the panel, he could tell. The poster was an electrical engineer. It turns out that he was, as a colleague of mine puts it, a "5V electrical engineer". He is used to looking at low voltage wire looms connecting boards. Electricians and engineers that are in the field working all the time with what he was thinking of for the first time got a good laugh about that....See MoreHigh HVAC Quotes
Comments (10)Not much to say about the details of the installation. Just a 3 ton outside AC condenser on a pad with matching inside evap coil and new lineset. Access is excellent, nobody would even need to get into a crawlspace or attic or up on a roof. Furnace is a Coleman, 3 years old. Ducts are already in place. They do need to run a 35 amp line from the breaker box about 60 linear feet away, and add an exterior 120 VAC outllet. All the work would be done either in the garage or right outside the garage. None of the lines need to be hidden. I'm looking at totally average vanilla HVAC brands and models, e.g. don't need anything fancier than the totally average vanilla Coleman furnace that's already there. Seems like a pretty average job. To be clear, when I referred to online rates from Porch and the like, I wasn't talking about estimates I got from them. I'm talking about their published statistics on costs based on data they have collected from people who have had similar work done in the same geographic area. You don't need a ton of data points to get a pretty good estimate of an average, so unless they are just making up numbers, it seems like an average installation of average difficulty of an average 3-ton air conditioner into a house with existing ductwork is costing people about $5000 in this area. That's why I'm puzzled about getting quotes that are double that. I did get one quote for $6K based solely on written information I provided, but it's not firm because the estimator has not yet seen the house. The house *is* a nice new house, substantially above average for the immediate area, if that has anything to do with it......See Morenycefarm
5 years agoopaone
5 years agoMark Bischak, Architect
5 years agoopaone
5 years agoMark Bischak, Architect
5 years agolast modified: 5 years agoopaone
5 years agolast modified: 5 years agoopaone
5 years agolast modified: 5 years agoMark Bischak, Architect
5 years agoVirgil Carter Fine Art
5 years agoopaone
5 years agolast modified: 5 years agoMiniSplit Heat
5 years agolive_wire_oak
5 years agolast modified: 5 years agoopaone
5 years agoopaone
4 years agoTim Johnson
3 years agoLindsey_CA
3 years agoopaone
3 years agoTim Johnson
3 years ago
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