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Liquid to gas heat ex-changer
So I have been interested in getting an air to water heat pump but can only seem to find really expensive 4 or 5 ton units. My idea is to pick up a smaller heat pump and run it through a separate liquid to gas heat ex-changer. Is this even possible? What brands or places can you find these heat ex-changers?
What sparked my idea here was seeing how some modern cars are using the ac systems to cool a small heat ex-changer for different purposes. Appreciate your insight and advice!