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We are planning on re-building an old gas fired furnace. We cannot get the heat exchanger anymore it is a 40 year old out of business unit. The furnace put out around 650,000 Btus output heat. We have a customer that cannot afford the total replacement which would be a new 12,000 cfm furnace.
We found we could convert this system to a hydro-air system using a 94.6% eff gas fired Lochinvar and install a 2 pass hot water coil for less money.
My question is: Will this be an improvement in efficiency and will it save the customer money?
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