First pellet stove. Some questions.

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Greg Omagh

Member
Oct 1, 2012
23
Central Mass
I live in Central Massachusetts. Our house was built in 2003 and it came with a propane insert fireplace. The thing is basically useless, puts out no heat and because propane is not our primary fuel (we're oil), it costs a fortune to use. I think last year we paid $6 / gal, believe it or not.

We decided on a pellet stove to supplement the oil heat especially downstairs. We have about 1500 sq. feet downstairs. Pretty open plan. We looked at the Harman Accentra and Quadrafire Mount Vernon AE inserts.

In the end we have decided on the Mount Vernon, for noise level and automatic control. It's not cheap and probably not a fast payoff on it, but we also like the aesthetics and the fact that it's closer to a carbon neutral way of getting a warmer home, so there's an intangible value also.
  1. The one thing I cannot seem to get a good solution for is that I want the downstairs fan to come on at high point, say 75F and auto switch off at lower point in order to even the temperature across the zone. The family room where the stove will be has the main downstairs t-stat. I have read about t-stats that will run the fan every 20 mins for 10 mins (circulate mode), and that might work, but I don't think I'd want that happening ALL the time. Does anyone know of device that either acts like cool mode (fan only, no A/C mode) in addition to regular H/C modes. Or one that can circulate on schedule? I do want to fall back to oil heat during the overnight and unoccupied day time, so I am probably asking a lot.
  2. I also have a concern that maybe what I expect to happen, i.e. moving warm air through the existing air ducts WON'T work. That as the air as it gets moved it will cool more. So doing nothing at all and letting natural convection spread it around may be better?
  3. The exterior of Mount Vernon with the decorative casting has 45" width, and our mantlepiece wood to wood is 45 3/4". That doesn't leave a lot of space between the casting and the wood. Any thoughts on whether that would look OK, or even work at all? The installer said they can custom make a surround, but we like the casting look.
  4. I read some reviews of the Mount Vernon and it seemed like some people experience a lot of problems with them. A lot of these reviews are older I hasten to add. I read through this forum and other serious forums and don't see anything to be concerned about. I guess my last question is, was this a good choice from reliability standpoint?
I do know we are introducing more "work" into our lives with cleaning, pellets etc etc, but I read the manuals and the cleaning process demonstrated to me. I am OK with it. So eyes are wide open.

Thanks in advance for any help and I promise to post pics pre and post installation.
 
I cant answer all your questions but I find it does not help at all to run my circulator fan on the central air system. My house is 1800' and the heat spreads throughout pretty good. Although the living room is always the warmest room in the house and the bedrooms are 5-6* cooler, I like it that way.
 
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Thanks for the reply Clay. I am definitely not going to do anything until I have the stove running for a few weeks in the cold season. I can switch on the fan manually with my existing tstat to see what happens.
 
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I think I also answered my 3rd question with this picture from Hearth and Home. Here the casting is touching the left and right parts of the mantle and it looks fine.

image001.jpg
 
I would look close at the construction method for the gas fireplace surround. a little time for a small remodel can save you down the road. that propane uses a direct vent system.
 
They have not visited my house yet, so what I have been told so far is based on the photos and measurements given to the dealer. They told me they intend to gut the propane stove and reuse its steel firebox. This avoids removing the marble surround and mantlepiece. In the quote they mention "out and up" type of vent. We already have a bump out and I would prefer to up through it and out the shingles, just for the sake of appearance, but I will speak to the installer when they visit.
 
I heat with a pre-AE Mt Vernon in my basement family room. It happens to sit under my main duct for the forced air furnace, which is upstairs because our home is a modular. When I installed my drop ceiling I put a couple of grid panels over the area where the stove sits. I have an additional furnace blower hooked into my ductwork, and hooked into an Air conditioning thermostat.(had to make a DC power supply and relay box for this). When the temp above the stove reaches a certain temp, the blower circulates the air through the house. I also removed my basement door and replaced it with a gate. A lot of the heat just naturally goes up the stairwell. The air is not warm to feel it, but it seems to circulate and do a fair job of keeping the upstairs tolerable. This year my basement is finished off with carpeting, so I am expecting more heat to go up stairs instead of heating the cement floor.
The house is about 1,500 down and another 1,500 upstairs. I average about 6 tons per season, which usually costs us around $1,200.00. Even though the propane furnace kicks on once in a while, it isn't too demanding.

The closer you can get the stove to the stairwell, the better it will send heat upstairs. Unfortunately, mine is half the length of the house away.
 
Generally moving heat thru existings ducts don't work. The problems with the early Mt V ae's have been ironed out, with the exception of maybe a software glitch within the programmable thermostat. I'm going on season 5 with mine and have only replaced the ignitor once, and the droptube thermocouple but I misdiagnosed that. It didn't really need it.
 
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