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I agree, check your filters and check for a fault code. Most modern furnaces will go into a lockout if the furnace limits several times (3 or so)during a run cycle. Doesn't sound like it has done that, so your filters are probably OK. If filters are clean and no fault code is visible, call...

The size of pex is determined by how long of loops you run. 1/2 pex is good for 300' or less. With larger sizes you can go longer. Doing a heat loss on the building will determine spacing of the the loops.

Yep, I'm wondering too why you need to get rid of the gas? By electric are you meaning and electric furnace only, or are you meaning putting in a HP system?.

Electronic leak detector to pin point the area, then soap to locate exact location. The old GE H10 detectors were the best, but very expensive.

If it is a condensing gas furnace, you will need to install it in the configuration it was in at the old building. I.E. if it was standing upright with the blower blowing down it would have to be installed that way. Unless you convert it to another position. Some can be converted to any...

WRONG, see below. Yep, you never want to turn the power off to a unit that is still heating. You will eventually damage the heat exchanger. Buy a cheap digital non programmable thermostat. I've never seen one without an off switch.

Exactly!! Your furnace is only as good as the rest of the system, (duct work) that it is installed on. The best furnace will not work properly or last very long if the duct system is undersized or restricted in other ways. I have not seen more of a failure rate in Tempstar over other brands...

Check with a building supply store. There is available a trim piece that has a rubber seal on it. It replaces the out side trim of the garage door frame. I have put them on my garage door and am happy with them. The ones I got came in 10' lengths, they come in longer lengths as well, and are...

Yes that is why you have a mixing valve. I've only used a slab sensor on one job that was heated by fan coils but had loops in the concrete floor to keep it warm for bare feet. If it were me, I'd set the min. to 55 or so and the max to 100. Or I would disable the slab sensor portion if the...

True, I don't know anything about the open system you have. I'm now trying to figure out why you would want cold water to be drawn into the floor when you open a hot water facet? Isn't the point of a floor system to have hot water go thru it?

If you are running warmer water than you want your slab to get, or, so your slab doesn't get to cold, meaning shorter recovery time.

Most codes do not allow radiant and domestic to us common water. What do you think happens to the water in the loops in the summer when it just sits there for several months.

You mentioned that the garage is radiant, but you don't say whether the hydronic heat in the house is radiant floor heat or baseboard/radiators. If you are all radiant floor heat, then water to water geo is a great way to go. If you have baseboard/radiators geo more then likely won't be able...

The purpose of a slab sensor incorporated with a room thermostat is to limit the max. and min. temperatures of the slab regardless of room temperature. So if you have the room stat set for say 65 degrees and it is 55 in the room but the slab sensor max setting is 90 degrees and it is at that...

Yes I understand now. So doing it the way, or similar to the one I showed with the pit would work fine then. It won't hurt anything to just run the leader pipe from the pit under the loops you will run later for the rest of the garage.

Here is a picture showing an installation using the above product.

tcianci, here in Bob Drake country, most of our above ground tanks, and all in ground tanks have a fitting on the top of the tank for the fuel lines. The supply line is kept 6" off the bottom, the return line, if used, is only a few inches into the tank. As there is not a condensate issue here...

Here is a couple done on 10" spacing. I wouldn't necessarily do a separate loop just for the pit area, but that's just me. The program went with 3 loops when I changed the spacing to 10". nate379 above is correct that you don't need to worry to much about equal lengths if you have a...

Pumps are sizes for heat load and head loss so not enough info to figure that one. I'd say a taco 007, but can't really say. For the tank size we would need to know the total water volume of the system. 1000' of pex holds 9.25 gallons of water. I could not find any specs on the boiler, but...

Here is a link to where you can buy the parts from if you don't care to do the e-bay thing. http://www.ckburners.com/ I used the kit from there (the same kit as you can get off e-bay, I believe) to convert an oil furnace last fall for the shop were I work. It has worked flawlessly all...