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| Thread ID: 108070 | 2010-03-12 19:51:00 | Hydronic Under Floor Heating | McChief (15671) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 866573 | 2010-03-14 22:36:00 | Strangely enough, some plumbers have the idea that 316 SS does not corrode too badly at all, regardless of South winditics and the Docistics ;) 316 SS is much bandied around and overrated. The standard is much abused. Seen some communist chinese fittings with 316 stamped on them that are ****. Some clowns go on about buses built form ally seen them corrode up worse and harder to repair than panel steel. Think water heated underfloor heating needed for northern hemisphere and maybe southland but bit of an overkill in NZ. If you are going to use it the water should be almost boiler water grade Ever thought of a woodburner? AGS aircrafts spares god give me strength. |
prefect (6291) | ||
| 866574 | 2010-03-14 23:11:00 | Compression olive fittings in 316 (Provided they are not from the Orient or Europe) are trouble-free in service. They and the pipe appear expensive, but when you cost a house including the plumbers labour, it used to work out cheaper. When you add in the cost of warranty for 5 years, it leaps ahead. I doubt whether reactor grade which presumably is all release noted and x-rayed, with AGS parts would be cost effective in a domestic situation unless a few trucks had Lucas tailgates ;) Most of the steel, and stainless steel in my day was made in UK :), so we used grades like En58J. When it came to hardenable stainless like 440C or 440B which we used for bearings and machine tool parts, then that was imported. The trucks didn't have Lucas tailgates, more like English Electric :rolleyes:, but EE had tremendous staff purchase schemes where you could buy materials at cost, or even at scrap prices. On site at Whetsone there was R.E.D, the Reactor Equipment Division, NPD Nuclear Power Division, SST Small Steam Turbine Division (up to 60 Mwatts), and the Mechanical Engineering Laboratory, and up at the end of the site was where Frank Whittle had used to run his engines, still heaps of his stuff lying around. You can imagine what the stores were like....................... |
Terry Porritt (14) | ||
| 866575 | 2010-03-14 23:44:00 | Design the house with big north facing windows, to heat the slab during the day during the winter, and overhangs over the windows to shelter the sun in summer. You then get free pssive solar heating. If however you are going for one of those cheap off the plan houses, you may not have that option. | robbyp (2751) | ||
| 866576 | 2010-03-15 09:02:00 | Thanks for the feedback. | McChief (15671) | ||
| 866577 | 2010-03-15 09:06:00 | Thanks for the feedback. The house is 330 sq m with 3 living areas so if we were to go for heat pumps we would need at least three. And as someone said heat pumps will miss some corners. Thats why we are looking at alternatives. We will have solar to heat the water but during winter the water doesnt get hot enough so we need the heat pump to heat the underfloor. Apparently we can thermostat each room to the desired temperature as each area has its own set of pipes (the pipes are plastic by the way) running back to a central cupboard. I really just dont want to spend big bucks installing the system to find that its going to cost heaps to run. I am told by the heating places that its cost efficient but I want to hear from somebody who has it or knows somebody who has it and what the monthly costs is to run. |
McChief (15671) | ||
| 866578 | 2010-06-02 04:30:00 | We are also in the design stage, but our house is considerably smaller with only 200sq living. I am in Auckland with a south facing/double glazed plan. I am going with the hydronic heating. Cost: 12,000-18,000. I will be using tiles throughout the house. Underfloor heating is a very old technique and the pipes and quality of fittings have come a long way. I am not at all concerned with having this system in my new slab. I spent $4000 on a heat pump in my existing house along with $2000 on a smart vent. That's $6000 to make the living area warm. The cost of running that heat pump 24/7 is about 100-150 per month (guessing). The cost of running my new floor heating in my new house would be about $120 per month, and that's for the whole home. I had thought about other options such as ducted A/C and gas powered ducted heating. But with the floor heating you get 'radiant heat'. This means that's it's not in your face blown air. It will heat the floor, which in turn heats your fixtures/furniture/walls. This means that the house itself will actually be warm. The way I see it is this: Pumping hot air into a cold house is a no win situation, as the house itself is cold, which in turn will cool down that warm air very quickly especially if your living in a cold area. Your heat pump is constantly fighting to heat the air that is cooling continuously. I have people in my house 24/7 so having a floor system that runs all day everyday is the best option for me. O.k the are people out there that have fancy architecturally designed echo houses with lots of passive storage devises that probably wouldn't need this type of heating, but not us. I have taken the cost into the overall price of building to the extent of reducing the size of the house if needed so as not to lose the heating option. Kiwis are a funny lot, we are extremely tight ass'd, winging lot. Don't want to spend the money making our houses warm, dry, efficient. But then turn around and complain that it's toooo cold (even in Auckland). Or even more hypocritically...... complain because the power bill keeps going up. Two things that will continue to go up and go up big time: 1) Power 2) Rates But these people who complain are the same ones going off to Surfers every year for their silly little 'Big' overseas trips. Or blowing money on a new 'tiny' or a new second HSV to park in the driveway. Priorities people...family health comes first at all cost as far as I'm concerned. ............are that feels good...............:punk |
enzedone (15672) | ||
| 866579 | 2010-06-02 04:55:00 | We are in the process of building our home. We are at drawings stage and looking at the best of options for heating our new home. Natural Gas is not piped to our street so we have been advised that hydronic underfloor heating (water pipes in the concrete slab floor heated by an external heat pump) is the next best way to go. We are wondering if anyone in this forum has had this installed and looking for their thoughts on the system in terms of practicality, efficiency and cost. We understand that the set up cost is far greater than any other heating system and that the key to the project is the size and efficiency of the heat pump itself which is $10k alone. Already replied above |
robbyp (2751) | ||
| 866580 | 2010-07-15 08:24:00 | Interesting thread dredged up by the spambot. Why is everyone building homes with concrete floors these days? | Greven (91) | ||
| 866581 | 2010-07-15 11:02:00 | I personally hate concrete floors, too hard on the feet. | pine-o-cleen (2955) | ||
| 866582 | 2010-07-15 18:22:00 | Why is everyone building homes with concrete floors these days? Fewer drafts I would guess. |
Cicero (40) | ||
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