Heat Pump

It's working, but getting worrisome.  In freezing weather, it has a frost-thaw cycle in the outside part that usually lasts about 5 seconds before the heat cycle comes on.  Lately, it has been taking 15-20 seconds.  Not much difference, but changes aren't good.  And 2 nights ago, during a cooling cycle, it started making rattling noises.  That's not normal at all.

So, for once, before it heat pump just stops, I called the installer and arranged for a diagnostic visit.  They arrive tomorrow afternoon.  I sure hope the rattley sound is just a loose fan blade of something.  But whatever, I hope it is something easily fixable.

I have bad luck with heat pumps.  They usually die on a friday night on the hottest day of Summer and I have to suffer several days before they can come out to repair it.  Historically, it has needed replacement every 7-8 years.  Once one died in mid-Winter.  I can deal with cold a bit better than hot, but it still isn't fun.  I mean, I can add more clothes but there is a limit to how much I can take off.

If they find something simple to repair (or nothing or major repairs, come to think of it), I can at least get an annual maintenance contract at a good price and I think I will.  Knowing my luck, THAT should guarantee nothing ever fails again, LOL!  But it would be worth it.

I am one of those people who think that anything working should keep working.  It's illogical.  It like with my gardens and flowerbeds.  I keep thinking that, once weeded, they should STAY that way.  They don't.  ;(

The heat pump company gives the general "4 hour" range for arrival.  But at least this one calls a half hour that day before they anticipate arriving.  That helps.

UPDATE:

The heat pump was overcharged.  Over-pressurized.  The technician discharged "enough".   And because they overcharged it initially, all they charged was the visit.  I didn't argue about it.

It was sufficient that he immediately heard the same problem I did (and that is rare), fixed it, and left.  It was raining, and I held a BIG golf umbrella over him while he worked.  That got some good will.

He also gave me some useful advice.  I bump the heat up in the morning and use the a/c to cool down at night.  He said stop doing that.  "Open a window at night and use the fan, heat pumps don't like cooling the house when it is below 50F outside". 

OK, live and learn.  Wish someone had told me that 33 years ago.  My heat pumps die every 7-8 years.  My neighbors' heat pumps don't.  I've asked.  Now maybe I know why...