I have built 2 new houses in the last 10 years and put heat pumps with propane backup systems in both. One system was Carrier, second system is York. I like the systems fine (when working) and both are very efficient. These are both big houses with high ceilings but very very well insulated and top quality windows. Both heat pumps were 16 to 18 seer ratings.
Now the down side. Very expensive to install and just too darned complicated. The repairmen can not figure out what to do. Needed to call in the factory rep in both systems to get them to run right.
Inorder to get these super high efficiencies they squeeze and tweek every little part of the heat or cool cycle with lots of computer programing. If you think a car is complicated to work on, you should see the manuals on these HVAC systems.
Would I do it again? Maybe. When it works it is great. When it doesn't...uugh.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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