Looking at getting a ventless propane heater for a 14ft x 32ft shed/barn. the square footage of the structure is about 450sq/ft, I have the ceiling insulated but not the walls (for now).
from what I am finding, a 18K to 20K BTU heater is rated for a 700sq/ft room, but I cant find any in stock. I have found the next size up (30K BTU) of the Mr Heater brand.
Wondering if anyone has had experience with either brand and could make a recommendation?
I have a couple of dyna-glo’s and they have work well for what I use them for, there the blue flame ones and not the infra red ones. There both at least 15 years old. Ones a 30k and the other is the 10k. IMO just get the 30 has a thermostat and has a high and low burn rate depending on demand.
Be ready for a lot of moisture
Is this gonna be on all winter or just on occasion?
The heater would be mostly used for early spring and late fall. Not so much in the winter unless it was a warm weekend
As mentioned , ventless usually produces much more moisture.
Dynahlo is a trusted brand that’s been around for a very long time. Mr heater brands seem to be sold more strongly amongst retailers in the Mid-States region. I see a lot of dyna in projects I do out east and in Colorado and Wyoming. Both are very well tested by UL Labs, so if installed properly and recommended clearances are followed, they each will be safe.
In my opinion, I lean towards mr heater for items off the shelf so to speak. They have decent consistency in most of their products. Dyna-glo makes a range of quality. I would not by dyna based on the name. I would do research to see if it’s an entry level budget item or higher end.
I’m just curious why not vented ? For the minor cost difference of venting, I personally would put a 30k vented ceiling furnace in there
X2 with Randy. Not a fan of non vented heaters. Safety concerns me the most. Also vent through the roof if you have a roof overhang. The exhaust will ruin the soffit if vented horizontal out the side of the building.
Thanks for the replies, looks like I will do some more research
I put up one of those hanging unit heaters that they sell at Fleet. Works great but it’s very noisy, and I’m not too nuts about that. I actually thought about putting in one of those ventless ones just as kind of an auxiliary heater to hold the temp once it gets up. I know how careful you have to be with them, but usually you can tell when you’re getting a little bit of buildup in the room. I can feel it in my eyes for the most part.
I have a 80,000 Mr Heater. 600 sq ft garage, 12″ ceilings.
Walls. ceiling insulated. Heated up from 38 -55 degrees in about 45 minutes, put it to low and for the next 3 hours it hovered around 55-60. Don’t use it much but when I need it it’s easy peezy and works and YES, moisture can be a problem but…. Once I get a new place my garage will have a vented unit that will keep it a constant 45-50 for me.
I have both a propane torpedo and Portable Propane Convection Heater.
I like the convection heater because it is quiet.
The nice thing about the torpedo heater is that it circulates the air thus warming a large area quickly.
X2 with Randy. Not a fan of non vented heaters. Safety concerns me the most. Also vent through the roof if you have a roof overhang. The exhaust will ruin the soffit if vented horizontal out the side of the building.
If side vent, check clearances closely. Some units will have you out past the soffit/fascia. I have distorted and discolored soffits even with proper clearance
There’s always a fish house style direct vent heater. No electricity required, mounts low to floor, ez venting, direct vent so it burns only outside air. Bad part is the cost
And the 80% efficiency.
I have a 30 Dynaglow in my 2-car garage. It’s insulated and cal-coated. Brings the garage from 45 to holy crap turn it down in half an hour. But the humidity is terrible. Water runs down the garage door. Going to change to vented when the shingles warm up.
We have the 30k dynaglow in our attached garage and it has been great. On setting 1.5 of 5 it keeps the garage at 60 degrees regardless of temperature outside. Even in the coldest months it has only added $30/month onto our bill, but we generally don’t even notice it. Condensation has been a non issue for us in our garage with 12’ceilings.
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