Replies

1. 
   Clewless1 | Apr 27, 2014 05:40pm | #1

   Tankless and low voltage and heats your house?? Wow. Not sure how that happens. Maybe you have a very small house.

   Maybe it's time (if you have the space) of switching to tank style? Not much savings in a tankless that comes on regularly to heat the house and your domestic hot water. And tankless is often expensive (relatively speaking).

   Generally, I feel many tankless applications are overrated. There is a time and place for everything ... even tankles DHW. But they tend to be oversold as 'big energy savers' when really, they aren't.

1. 
   KaiserRoo | May 28, 2014 12:01pm | #14

   So do you have any advice on this? I figured that you might based on being interested at first post. If not this how about split unit heat pumps?

   KaiserRoo

2. 
   deadnuts | Apr 28, 2014 11:42pm | #2

   building in redundancy?

   If you already have "hotwater", then why you lookin' to heat it?

1. 
   KaiserRoo | Apr 29, 2014 10:12am | #3

   Not sure about what you mean with your post. Here it is again. I wish to replace my Tankless hot water unit. It provides heat, and hot water. Any advice would be appreciated

1. 
   DanH | Apr 29, 2014 10:39am | #4

   One thing we're not getting is what you mean by "low voltage".  How many volts, precisely?  240V?  120V?  12V?  Where does the power come from?

   Also, you say "direct vent", which implies that this is a gas unit.  Natural gas or propane?  How many BTUs?

   (And "hot water heater" is, as noted, redundant.  If the water is already hot it doesn't need heating.)

1. 
   KaiserRoo | Apr 29, 2014 01:08pm | #5

   I can be redundent, i can be redundent. Now lets get past the hot hot water heater and see if I can make this more presice.

    https://www.heatmaker.com/v/vspfiles/images/pdfs/HSeriesManual.pdf. 120v in (and there is 24 volts for the Honeywell controler).

   The unit I have is HW-M2-130N which runs on natural gas. It is an intergrated hydronic heating and domestic hot water unit.

   My home is in the northeast, it is about 2k square feet, with baseboard on 1st floor, radiant on second

   I wish to upgrade to a better unit that can be readily serviced (as this unit is 18 years old).

   KaiserRoo

1. 
   Clewless1 | May 02, 2014 07:53pm | #8

   I agree

   get over the hot water heater vs. water heater. Potatoe potatoe. Yeah they are right, but it's clear the subject we're talking about. 

   I wonder if they would talke about ensuring proper English or insuring it.

2. 
   KaiserRoo | Jun 02, 2014 05:19pm | #16

   I'm not sure what you mean here as english is my second language. Still looking for advice on the tankless and heat pump. Do you have any you wish to share?

   KaiserRoo

2. 
   KaiserRoo | Apr 29, 2014 03:16pm | #6

   I should not have mentioned the low voltage and din't intend to screw anyone up by doing so. I also should not have typed hot water heater and for this too I guess I'll  apologize

3. 
   KaiserRoo | Apr 29, 2014 03:19pm | #7

   What brand would you recommend?

   What brand would you recommend to replace my current unit?

   KaiserRoo

1. 
   DanH | May 02, 2014 11:02pm | #9

   Well, you never actually told us, but I gather that this is a 130K BTU unit, correct?

2. 
   KaiserRoo | May 03, 2014 12:04am | #10

   Yes 130 btu

3. 
   KaiserRoo | May 03, 2014 12:08am | #11

   130k BTU, I think, it is listed in the PDF 

4. 
   KaiserRoo | May 03, 2014 12:09am | #12

   edit

5. 
   KaiserRoo | May 09, 2014 04:42pm | #13

   So, any advice

   Now that I have updated the info about the tankless unit would anyone have any advice about a replacement? I figured i would have heard from Clewless1 or Deadnuts by now.

   KaiserRoo

2. 
   KaiserRoo | May 28, 2014 12:03pm | #15

   ????
   Any advice on the original post for tankless? How about split unit heat pumps?

3. 
   KaiserRoo | Nov 13, 2014 11:49pm | #19

   Georga asphalt hot

   Really, when you think about it "being hot" is somewhat relative. Perhaps I have hot water but wish it to be hotter? In this case I would indeed have to heat the water, right?

   I'm just messing with you. I just want your take on tankless water heaters, if you have any that is. 

3. 
   Perry525 | Jun 08, 2014 10:16am | #17

   Tankless heating and hot water.

   I think tankless heaters are a waste of time. You should close off the hot water side, fit a hot water tank and have lots of high or low pressure hot water on demand. I don't like tankless hot water as: every time you need hot water, the boiler goes through its start up routine, and you have to wait for possibly gallons of cold water to arrive and be wasted before the hot water arrives. you cannot run warm water, its either hot or cold. If you are taking a shower and someone needs water elsewhere, you either get burnt or frozen.

   By adding a hot water tank, heated by the same boiler, adding a thermostat and motorized valve, you have constant hot water at an infinately variable temperature.

   Moving on, as long as your existing boiler works, keep it. Boilers can go on for 30 years,  I fitted one that worked for over 30 years with only the odd clean and the replacement of the thermocouple. When I last saw it it was still working perfectly.

1. 
   KaiserRoo | Jun 14, 2014 12:41pm | #18

   thank you for the advice.