Hi all, I recently purchased a house in Philadelphia Pennsylvania. It is a 2000 sq split level home with a fireplace on the ground floor. Since we decided to buy we have been interested in using an insert as a supplemental heat source for the house. After we moved in and I actually measured the opening on the fireplace I realized that the 20 inch height may be an issue and it seems like will limit us to some of the smaller units which will not produce as much heat. I am looking to see if anyone has any recommendation for a good unit under 20 inches tall that may be able to put out enough heat for a home that is 2000 sqft (I know we will probably not get a unit that will be able to heat the whole house all winter reliably, but maybe something that can produce enough for milder days to give the boiler a break). The opening is tapered, and the overall dimensions are: 15.5" deep before the height tapers off, 20" high at the opening. 27" wide at the narrowest point (the width begins tapering off immediately the actual front opening is about 32 inches) I have been stalking around the forum the past few months and know that expanding the hearth to have enough room for a stove may be the best option, but would like to avoid that for now. Thank you in advance for any advice that is given!