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Do they still make water heaters/tanks like the blue one in the picture? It's being heated by hot water coming from a separate gas furnace. I believe it is essentially a heat
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A Visual Guide to a High-Efficiency Condensing Furnaces
A Home High Efficiency Furnace with a Residential Gas Water Heater & Humidifier Stock Photo - Image of conditioning, environment: 197107410
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Is Your Furnace Not Blowing Hot Air? Here's What It Means
