My house was built in the 1930s. Over the years, previous owners converted the 1 car garage to a kitchen and added an extension on the other side of the house. The HVAC has ended up being a mix of hydroair (two zones), hw baseboards (one zone) and hw kickspace heaters (one zone).
We are remodeling the kitchen and I am considering options to discuss with my GC and his HVAC pro.
Some details on the space:
The kitchen is probably around 20x12ft. It has a vaulted ceiling (14ft or so at the peak) that goes right to the roof rafters (ie no attic). The North and South walls are external. The west wall opens to a dining room that is main structure of the house. The East wall is an outside accessible utility closet with the boiler in it(Weil Mclain WTGO-4). The floor rafters are framed about 4" above the slab. Between each rafter are 4" of insulating foam. Then subfloor and hardwood.
Currently, the kitchen has one 12x12" register from the upstairs hydroair unit at the west end and two hw kickspace heaters under a bench at the east end of the room. During this kitchen remodel, I would prefer to get rid of the kickspace heaters and possibly prepare the space for a larger HVAC overhaul down the road (my goal is to either get the downstairs on one zone (instead of 4) and the upstairs on one zone and have it stop supplementing and providing ac for the downstairs.
My first thought; while the kitchen is gutted, is to run ductwork to the far side. When I finally redo the downstairs and go all hydroair, I can just tie them in and remove the kick space heaters. The only option for fitting these ducts in is to drop the spine of the ceiling a little bit and run ducting across it. The space under the floor joists is a mess and not easily accessible (also, there wouldn't be a good spot to put the registers in the floor)
My second thought; since the floor is coming up, maybe I could just add hot water radiant floor heating on top of the subfloor. This obviously won't tie into my hydroair zones else where in the house, but should give nice even heating.
Some questions:
1) Any feelings about radiant heating under hardwood? I would preferred natural but understand it may need to be engineered wood. Some people seem to say its terrible for wood, others say its not while others I see say use engineered wood only.
2) If I get my whole house on two hydroair zones, will it be complicated or convoluted to have one zone of hw radiant floor in the system?
3) I do plan on putting heated floors in two bathrooms. Would getting the manifold and set up for the kitchen in place make it easier and more logical to do hw radiant in the bathrooms? (I am not concerned about getting the plumbing in place.)
4) If a room has radiant floor heating, it will still need duct work for AC in the summer. There will be other rooms on that zone that also used those ducts for heating since they won't have radiant. Do you just accept that your radiant rooms get both hot air and the floor heating?
Sorry for the long post. I appreciate and feedback. I hope to be armed with as many ideas as possible when I sit down with the contractor and hvac pro.
We are remodeling the kitchen and I am considering options to discuss with my GC and his HVAC pro.
Some details on the space:
The kitchen is probably around 20x12ft. It has a vaulted ceiling (14ft or so at the peak) that goes right to the roof rafters (ie no attic). The North and South walls are external. The west wall opens to a dining room that is main structure of the house. The East wall is an outside accessible utility closet with the boiler in it(Weil Mclain WTGO-4). The floor rafters are framed about 4" above the slab. Between each rafter are 4" of insulating foam. Then subfloor and hardwood.
Currently, the kitchen has one 12x12" register from the upstairs hydroair unit at the west end and two hw kickspace heaters under a bench at the east end of the room. During this kitchen remodel, I would prefer to get rid of the kickspace heaters and possibly prepare the space for a larger HVAC overhaul down the road (my goal is to either get the downstairs on one zone (instead of 4) and the upstairs on one zone and have it stop supplementing and providing ac for the downstairs.
My first thought; while the kitchen is gutted, is to run ductwork to the far side. When I finally redo the downstairs and go all hydroair, I can just tie them in and remove the kick space heaters. The only option for fitting these ducts in is to drop the spine of the ceiling a little bit and run ducting across it. The space under the floor joists is a mess and not easily accessible (also, there wouldn't be a good spot to put the registers in the floor)
My second thought; since the floor is coming up, maybe I could just add hot water radiant floor heating on top of the subfloor. This obviously won't tie into my hydroair zones else where in the house, but should give nice even heating.
Some questions:
1) Any feelings about radiant heating under hardwood? I would preferred natural but understand it may need to be engineered wood. Some people seem to say its terrible for wood, others say its not while others I see say use engineered wood only.
2) If I get my whole house on two hydroair zones, will it be complicated or convoluted to have one zone of hw radiant floor in the system?
3) I do plan on putting heated floors in two bathrooms. Would getting the manifold and set up for the kitchen in place make it easier and more logical to do hw radiant in the bathrooms? (I am not concerned about getting the plumbing in place.)
4) If a room has radiant floor heating, it will still need duct work for AC in the summer. There will be other rooms on that zone that also used those ducts for heating since they won't have radiant. Do you just accept that your radiant rooms get both hot air and the floor heating?
Sorry for the long post. I appreciate and feedback. I hope to be armed with as many ideas as possible when I sit down with the contractor and hvac pro.
source https://hvac-talk.com/vbb/showthread.php?2226462-Radiant-under-hardwood-or-alternative-recommendation&goto=newpost
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