Heat pump not cooling like it use to
Posted 07 May 2012 - 08:25 PM
Former Student of Master Samurai Tech School. Current Student of Master Samurai Tech School
Posted 07 May 2012 - 09:01 PM
Anyhow... So let's say that what you said was my proper diagnosis:
Pull remaining freon into condenser. Purge system with nitrogen. Braze leaking joint(s). Pressurize with nitrogen (or skip). Vac system down. Confirm no more leaks. Release condenser charge. Run system. Charge properly (verify air flow and such). Check electrical, capacitor, amp draw on all 3 motors, etc.
Guessing 3 to 4 hours or so labor depending on exactlly how bad it is. Let's say $150 to 200.
Guessing $200 to 300 material depending on how low on freon. Braze rod, acetylene, nitrogen, misc.
Service call fee (varies by company) say $70
So around $500 assuming no other issues.
Oh wait... $300 union fee. Just kidding, please no cement shoes for me. Thx.
Edited by Bullstok, 08 May 2012 - 06:22 AM.
Posted 10 May 2012 - 12:13 PM
BUT BEWARE, money inversted in this repair can be wasted if next year the comp goes, or another leak is found....etc. Also some companies will tell you they can change the condensing unit and reuse the evaporator, I'd be reall leery of that as well. The new systems are allmost all R410a which has much higher pressure durring operation, and the coils are matched to the condensor, so to get correct cooling and efficiency, they need to be correctly matched. The line set can sometimes be reused, if all of the connections are brazed (due to the higher pressures).
Some techs use "hard solder" or "Stay Brite 8" solder, which is supposed to be stronger than standard solder, but I prefer braze, make sure he purges with N2 and verifies fix with an actual vaccume (micron)guage (the manifold set gauge doesnt count!) I've seen vereren techs use the sound of the vaccume pump to determine if the system is propperly evacuated.Some times they will reccomend fixed metering instead of TXV, dont do it!
The pricing sounds about right for that type of repair, but I'd wanna be sure all of the leaks have been found. What did the Tech use to find the leak? was the evap checked as well? Chances are all of the joints in this system are soldered, and may exibit the same issue soon too.
When shopping for a quote, look for the major players; Carrier/Bryant, Lennox, Trane. I'd skip the Goodmans, Kenmore, Tappan, Kelvinator, etc....but thats my prefference.
- kdog likes this
Posted 15 May 2012 - 10:02 PM
Once the leak is fixed it doesn't matter the cost of R-22 as you wont need any.....for a while.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users