I've been in my new home for just over 4 years. We have two York 4/5 ton units fitted, the smaller one for upstairs.
When we first fired-up the system at the start of the hot season (here in Houston, Tx) the downstairs unit wasn't working at all and the upstairs barely cooling. I called a local A/C contractor, who came around this evening. he looked in the above-ceiling roof space, where the heating/cooling plenums are and told me how badly installed were the two units (cooler plenum stacked on top of the central heating gas-fired boiler, with poor access to the a/c coils).
The service hand didn't check for leaks in any way at all, other than to check the R22 pressure in the downstairs unit - which was negative - or so he said). He just started pumping R22 into the system while running it, got it up to around 35 pounds of pressure, when I spotted heavy 'snow' at a joint in the in-line filter near the compressor - he said he had used 15 lbs of R22 at $$$ a pound, or $$$-worth of gas. He plans to come back tomorrow to change out the filter, recharge the gas and charge me another $$$, for a total of $$$.
The filter looks like it is leaking because it has steel body and with a threaded copper connection into it - a typical galvanic corrosion issue due to dissimilar metals - terribly poor design by York (and I'm a Yorkshireman, so I'm qualified to make the judgment !!!!)
I read that any decent contractor must check for leaks throughout the system before charging with R22. He didn't.
1. What should I do - tell his boss to tell him not to bother coming back and fight him over the bill? (I found by internet search, that local sales of R22 bottles are $$$ for a 30lb bottle, or just under $$$ a lb, versus the $$$ / lb that he wants to charge me - more than a n% mark-up.
2. Does anyone know an honest contractor in the Houston / Humble area who will replace the filter for me at a reasonable charge, check the rest of my system for leaks and general condition, and re-charge my system at a reasonable cost?
Any help with advice will be much appreciated.