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oil vs. propane vs. combi boiler
We downsized to a modular ranch, 1500 ft, last winter. Oil furnace is 27 years old, and working, however, we are looking at replacement. We also need a new chimney, water heater if we stay with oil. 3 companies have presented us with combi boiler units with a switch to propane. We already heat the garage with propane. We are wondering why the companies seem to prefer the combi units over the oil (except we know the maintenance, cleaning, etc) ? Thoughts on how these combi units work? It is just the two of us with an occasional guest visit from our adult son, we are retired, and we don't run dishwasher, shower, washing machine at the same time.