Worried about creating negative pressure from my chimney

[b-boy]

I have a finished basement. There is a small utility room in the middle of the basement. It's about 15'x6'. It contains my boiler and my water heater. Both are NG, and both vent to the chimney located in the same room.

That room gets very hot during the winter. The basement is currently unheated. I have provisions for hot water heating if I decide to install it. I'd like to steal some of the heat being generated by my appliances and feed them to the living area of the basement.

Would this do the trick?

https://www.amazon.com/dp/B000UC7ACE/?tag=atomicindus08-20

If so, do I need to worry about this creating any negative pressure and pulling CO out of the chimney stack and into the living area?

 

[ripperd]

A passive fresh makeup air to outside is how it is done in (tight) new construction.

 

[ripperd]

oh, if you just want room to room, yeah stick that vent up high towards the basement, and then just throw an intake grill down low on the wall or door.

edit, after looking at it they already have it basically how you'd want it. I bet it will work OK. They purposefully have the intake much larger to reduce the likelihood of negative pressure.

 

[Jackfre]

No the Enforcer is for moving air from one room to another. You want to look at the Tjernlund Combustion Air Enforcer. It ties in to the operating cycles of both appliances and provides the appropriate combustion and ventilation air. I represented Tjernlund for 20 yrs in the New England states. They are an excellent outfit.

 

[Jim greengo]

What are you using for combustion air for furnace and water heater?

 

[b-boy]

There are vented bi-fold doors on the room. Plus, there's a fairly large clearance under the door. Neither appliance pulls in any outside air.

 

[Bretny]

You should be pulling outside air in. This way the conditioned air stays in the house.

I did this with my wood stove and now have a warmer house and burn less wood.

 

[zak77]

I have 2 Tjernlund floor to floor fans in my house so far they've been working pretty good so i can only image the room to room fan will work just as good. These do not move a ton of air, only 60cfms so i would worry about creating a negative pressure that would effect any appliances, just make sure there's a way for air to enter the room for make-up.

 

[b-boy]

You should be pulling outside air in. This way the conditioned air stays in the house.

I did this with my wood stove and now have a warmer house and burn less wood.

It would be difficult. The house is 145 yrs old. The way it's setup right now, I couldn't do this without tearing out a lot if walls and ceilings in the basement.

 

[Bretny]

You can run a dryer duct up in the joists? It dosnt have to be a huge plenum.

 

[Jackfre]

The combustion air Enforcer has a 3 or 4" pvc supply to it. Your first step is to do a calculation on the total input on the appliances. Is the cubic footage of the basement, less the cubic footage of the material there enough to support the appliances? The good thing about the Enforceer is it is interlocked with the appliance. It is not spilling air constantly. On a call for heat it will make and operate for the duration of the call.

 

[Showkey]

The fact your running the units through a chimney suggests the home and units are not that tight or energy efficient ????? The chimney would be drafting at all times. The furnace room is probably not sealed from the rest of the building. Make up air would be coming from the whole house.