Hoping someone can offer some advice/insight on a problem I'm having:
I've got a 25-30yr old Singer model forced hot air Oil furnace. The last few years I've had it serviced by the same company and have had no problems (efficiency rating has been 73-75%) with the servicing. Today, I had it serviced, and the technicial came in and after a few minutes of pulling out the gun and nozzle and checking, announced that "the chamber inside is split, so you're not getting the proper amount of heat going through your ducts into the house, and in effect, losing heat up the chimney". I took a look inside and, yes, there did seem to be something there, but it looked straight and clean (almost like a seam). He said that there wasn't much that could be done other than getting a new furnace. He kept remarking about the age, how it was almost impossible to get parts for (I had replaced the oil pump a few years ago, and was able to find one without a problem), and that he wasn't about to do any sort of repair on an old furnace "It just isn't worth it". I also asked if this problem developed over time and was told "yes". However, none of the other service techs mentioned this problem. As I said, I'm running 73-75% efficiency for the past 5 years on this furnace. He remarked that "those numbers are false readings". No explanation.Why he said that, I have no idea considering it was from the same company he worked for. I have been using the same amount of oil for the last 3 years (I installed a new oil tank 3 yrs ago and get deliveries around the same time every year once my tank gets to 1/4) and have not noticed any excess fuel used this year, nor that it takes the house longer than usual to heat up this year. The one thing that is noticable is a slight exhaust smell coming from the register once in a while, but we have a CO detector, and that hasn't gone off. Anyway, my question is that I'm wondering if this guy is just trying to sell me a new furnace, or if it's possible for that chamber to split cleanly and not notice any loss of fuel or home heating time. His efficiency reading was 65%, about a 8-10% dropoff from when it was measured last year. He was pushing a Thermo Pride "the cadillac of oil furnaces" as he called it, that they sell for $3400 installed, even leaving a brochure with us and saying that it was old and had to be replaced soon. Maybe it does, but he certainly didn't seem like he wanted to put any effort into this one. Thanks in advance for your help.
Tony