everything you said was the truth with the one exception of programble t-stats saveing any money on 2 stage equipment especialy heat pumps. I sure its a standard thing you post for most questions but I will explain for everyone else. If you are maintaining a temp 9 times out of 10 the 2 stage...
my first thought is your fan should have ben upsized to acomodate the ac
. did you have ac before? do they have a duel feul control? if you had an ac before was it the same size.
I heard 2 good things about that tech first is he had a thermometer out . hopefully a clamp on. second is that he waited around . After adding or subtracting you should wait 10 min and do just that let the temp and pressures equilize. So I dont think you got a total mook but he did obviosly miss...
a 94% eff is good but its actualy worse then oil LP contians 70k btu per gal at 94 percent your geting about 65k btu per gal. oil at 140k btu per gal at 84 % is actualy more btu per gal . Obviosly you have to multiply in your local costs at this point. the fact that tankless only heat on demand...
If I where you and serious about saving oil on the hot water domestic side the only real clear cut winner is solor they will heat 100% of your hot water in the summer and 50% in the winter they pay for themselves in about 5-7 years and less if oil continues its rise and if you have southern...
the rust on the outside is a concern but the problem that happens with older tanks is water build up (mostly from condenstion over the years) on the inside of the tank you should call your local hvac comp to test for water on the inside of the tank. this will cause rust and sediment and...
just like a electric base board eccept the coil is in the airhandler . chances are you wont know the difference between the heat pump and when it switches to the resistance
do some research but if you want to upgade you should definetly look into a direct exchange geo thermal heat pump these systems can handle all your heat all your ac and about 80% of your hot water all for about 1000 a year. that being said standard practice on a traditional heat pump is to...
the factory charge the amount on the nameplate is sufficiant to acomodate for 15feet of lineset and a matching coil no more no less it is not that simple i wish it was but the only way to charge properly is by using the super heat and subcool calc