New Home HVAC System

   / New Home HVAC System #121  
We love our fireplace and it will heat almost the entire home if we use it consistently but I would never want to rely on wood as my main heating source. I'm still young at 43 and enjoy cutting wood and burning it when I want to. I don't thing I would ever want to be in a situation where I have to. Just my opinion after 6 years of owning our home and burning wood.

I'm 56 and still haven't had my shoulder replaced (doctors say I'm a bad canidate because I can pretty much deal with it for the most part). 10 years ago I could be out cutting and chopping for half a day. Now anything more than 1/2 hr with the chain saw puts me in pain for the rest of the day.
 
   / New Home HVAC System #122  
Thanks Sig for your generous advice. I considered my own thread, but how many HVAC threads do we need? When we get started I try to post photos in the projects forum.

Insulation is a priority for us. The current plan is to go ahead and order storm windows right off. We were in the house in the fall and experienced some windy sub-freezing nights and found the windows are a major factor. We were leaning towards steel, powder coated types with low-e glass and get the first floor windows done early in the process, though low budget alternatives are are available short term.

In the spring we will be up to harrow and plant the field and other projects and will be heating the downstairs with 4 oil filled space heaters 1,500 w each that kept us cozy in the fall (especially once we put up heavy curtains in our first floor bedroom) and extracted considerable dollars from our wallet. My plan is to use a heat detecting camera (an attachment for my phone) and take a lot of pictures on a cold night to capture were the worst leaks are. It is a 150+ year old brick house with a double brick wall (the historic term is “double wythe” brick) that has an air space, so insulating the walls would be a major challenge. But little cracks and spaces on the other hand can be sealed and will go a long way towards helping with the envelope. But realistically, unless we spray foam the interior or exterior or build a giant glass enclosure, the house will always be drafty, hence my desire to be able to heat with wood during the coldest periods. Got a design for the wood shed that would include a hatch where wood can be put into the shed from an adjacent covered area at the right height so it can be loaded into the furnace w/o bending over. I appreciate the concern that heating with wood is not for everyone as I am well aware. Note the chimney of the house is in poor condition and we are not interested in using the dual fireplaces (one opens out on the kitchen and the other side the bedroom (formerly parlor). Both fireplaces have remained closed up for 100 years since a major house fire took the roof (10” beams in attic still show scorching and brick work at the peak needed to be replaced and did not match the original brick that was made up the road. Rubble stone cellar needs tightening up as well.

The thinking is a considerable part of the cost will be the rads, windows and insulation. If we decide in 10 years the wood boiler is too much work and the house will be ok with just a gas furnace, figure I can sell the boiler and controls and just abandon the underground lines and all the rest of the work will be cake. Another consideration is my DS has mused on how nice it would be to have a heated greenhouse against the south wall with a door off the kitchen (I think a hot tub was mentioned also). A big wood furnace with plenty of storage makes that a possibility at least.

Just checked here in the city (1,070 sq ft house) and all the 7 radiators top out around 130° at the end over where the intake pipe is according to our laser thermometer, except one small one at 80° that looks to need the air bled off. The thermostat is set for 70° F and the wall next to the stat is 71°. No zones, but we only have one story here and it is 29° outside.
 
   / New Home HVAC System #123  
James - after reading the description of all you have to do to the house to make it livable, especially with fixing the foundation "Rubble stone cellar needs tightening up as well." and the problems with drafts and insulation, you should give some serious thought as to whether you should just build a new house near by and use that one as something else. I'm sure there are other non-financial reasons to proceed so the choice is one you'll have to make, I'm just suggesting that you step, back take a breather to be sure you're heading in the right direction before you proceed. Best regards in all your endeavors.
 
   / New Home HVAC System #124  
The thinking is a considerable part of the cost will be the rads, windows and insulation.

This is why I would suggest to have a professional load calulation done on that old farmhouse. Work with a local engery audit company. Once the basic audit is done, you now have a measuring bar for your return on investment per insulation, doors windows and types, added it will help determine what size/sizes you need for equipment (and radiators if that is the route you're going for heat).

Generally, vey old farmhouses scare me due to the potential scope of structural work that may need to be done that can come across unexpectedly depending on the amount of gutting already taken place.

I do agree with 3Ts suggestion, even when I first read your own comment about "rubble stone cellar". At this point, there seem to be a lot of unknowns, and my assumption is you're going to move from DC and live in this house in NY while you do the renovations?
 
   / New Home HVAC System #125  
JamesHW
Haven't read everything. Consider temporary construction furnace, put it in the garage when your done. Cost effective goodman. Maybe two sage? Then you can gut the house and live in it. Your going to find a lot of unknowns. I have messed with rubble foundations and I mean messed with. I know of only one group of guys, they are amish tie into and repair a rubble foundation. I have seen and I have done it, many screw up a rubble foundation. I have seen some in real nice condition also. Typically they are either good our not.
Sounds to me like your are going to be lifting a house and putting in a block foundation? You can do it and live in it. Not something I would do married with kids.
 
   / New Home HVAC System #126  
Sigarms
Have you looked or done anything with CHP?
Cogeneration Systems|Energy Systems|YANMAR
It is the way I think things are going to go. I ran into them in Indonesia where electrical grid is poor. Solves a bunch of issues. If I was putting in an office building I would certainly be looking at it especially when you can't count on the grid. Hotel with indoor pool. You have to have a need for hot water. If i could afford to throw what i have away and start over, CHP and a chiller? You could pipe that hot cold water all over. Theoretically heat would be free in the winter. You would have a whole bunch of choices electricity.
Steve
 
   / New Home HVAC System #127  
Sigarms
Have you looked or done anything with CHP?
Cogeneration Systems|Energy Systems|YANMAR
It is the way I think things are going to go. I ran into them in Indonesia where electrical grid is poor. Solves a bunch of issues. If I was putting in an office building I would certainly be looking at it especially when you can't count on the grid. Hotel with indoor pool. You have to have a need for hot water. If i could afford to throw what i have away and start over, CHP and a chiller? You could pipe that hot cold water all over. Theoretically heat would be free in the winter. You would have a whole bunch of choices electricity.
Steve
Honestly, no.

To show you how stupid I am, not exactly how they apply to residential applications per HVAC in the US:(

On that note, please remember, that the US is the largest market for ducted forced air used for heating and cooling.

Next up, where are they sold in the US?

You also have to remember, most home owners have a heart attack over a 5-10K replacement bill for their HVAC system only for residential applications (I do by far more residential than commercial work in my position, nor am I an engineer for commercial applications).
 
Last edited:
   / New Home HVAC System #128  
Residential CHP doesn't make much sense. You need a constant need for hot water use. Residential use i can think of would be for high end home that had indoor pool in cold climate. Pretty much constant heat and electrical load. We are considering using one for a hydroponic farm. Very very early stages:)
 

Tractor & Equipment Auctions

2007 INTERNATIONAL 4200 SBA 4X2 DUMP TRUCK (A50459)
2007 INTERNATIONAL...
2012 Ford F-150 Crew Cab Pickup Truck (A50323)
2012 Ford F-150...
2022 Case TR340B Skidloader (RIDE AND DRIVE) (A50774)
2022 Case TR340B...
2015 FREIGHTLINER CASCADIA DAYCAB (A52472)
2015 FREIGHTLINER...
2 Row Planter (A52128)
2 Row Planter (A52128)
3 pt Aer-Way (A50514)
3 pt Aer-Way (A50514)
 
Top