All Makes
All Models
24
Hour
SERVICE
Houston
Katy
Cypress
Woodlands
Tomball
SugarLand
Spring
( 713 ) 896 - 0074
No Answering Machine !!!
Our 21 Point Cooling Check-Up
for systems in good working order

This service is recomended for Spring Time ( March through August )

1 ) Check head pressure.

2 ) Check suction pressure.

3 ) Record head freon temperature.

4 ) Record suction freon temperature.

5 ) Record indoor air temperature .

6 ) Record supply air temperature. Calculate change across evaporator coil.

7) Calculate subcooling and superheat.

8 ) Record amp draw on compressor.

9) Record amp draw on the outdoor fan motor.

10 ) Inspect points on contactor.

11 ) Inspect condenser coil for blockage.

12 ) Inspect high voltage connection to condenser.

13 ) Inspect low voltage connection to condenser.

14 ) Check air filter.

15 ) Check thermostat calibration.

16 ) Inspect evaporator coil for blockage (if accessible).

17 ) Inspect condensation overflow drain pan.

18 ) Inspect condensation drain line.

19 ) Check air flow to all supply air registers.

20 ) Inspect return air duct.

21 ) Adjust system charge with up to 1 lb. of Freon if needed.


This comprehensive inspection is for equipment in good working order. If your
system needs cleaning, we recommend our Cooling Tune-Up.

Non-working systems will require a diagnostic fee to determine fault.





Only
$ 59. 00 ea.
includes 1 lb.
of Freon
if needed
Copyright 2010. Cornerstone Air Conditioning & Heating. All rights reserved.
NO SERVICE CHARGE / low diagnostic fee