Joined
·
9 Posts
please help
i was recently asked to take over a HVAC job that someone else started and they walked off , i started it without establishing a price first this was a previous customer and he is also a metal fabricator contractor . the pevious guy who started the job did not do much except mess things up . The space to be cooled is two large offices with high ceiling that have large windows that recieve alot of sunlight almost like a green house so the unit was already there a 3 ton unit and a 90 % gas funace that is in a small 4 ft tall mechanical room that is about 15 feet in the air accessible by ladder, the previous contrator cut the holes for three of the 4 registers and one of the return ducts he also like banged it into a wall or droped the A coil and put a hole in the line
here is a list ofwhat i did
Install: customer supplied high efficiency gas furnace, 3-ton A/C condenser and A-coil
-Secure customer supplied condenser on elevated shelf on side of building
-Supplied and installed 3/4 inch copper A/C line, 38 feet from A-coil to condenser
-Supplied and installed 1/4 inch copper A/C line 38 feet from A-coil to condenser
-Supplied and installed 30 feet of 3/4 inch PVC condensation line.
-Once the refigerant lines were brazed, vacuum test was preformed on the system.system was vacuumed for 20 minutes until it reached negative 30 psi. After letting it sit for 30 minutes the pressure had gone to 0 psi. All outer connections and lines were checked and no leaks were detected. upon removing the outer jacket of the A-coil a leak on Freon gas side line next to TRX valve was detected. The hole was brazed shut and the system was pressure tested and it held negative 30 psi.
-Replaced liquid side brass union 90 degree fitting and missing piston nozzle.
-Fabricated 20"x20"x36"sheet metal plenum with (4) 6" outlets to supply feed ducts.
-Finished (3) 6 inch feed ducts and (1) 6 inch return duct started by previous contractor added missing sheet metal screws , sealed all seams with class 1 duct tape and added necessary hangers .
-Installed (2) 6 inch return ducts and (1) 6 inchfeed duct and registers (total duct work installed approximately 200 feet.)
-Ran 110 v electrical line in armored sheild cable from unit to hallway ceiling to Install (4) 6 inch inline 250 CFM duct booster fans in the feed duct to try to compensate for the distance between the unit and the vents .
-Suppllied and installed 42 feet of schedule 40 1 ½ inch PVC and necessary fittings to vent high effeiciency flue gas exhaust through three course brick wall to outside of building.
-Installed 3/4 inch black iron tee with 3/4 inch by 1/2 inch black iron bushing to supply gas to furnace.
-Supply and install new electronic heating and cooling thermostat and thermostat wiring inside office wall.
-Supply and install approx. 75 feet of 1/2 inch black iron pipe, 1/2 inch ball valve, and dirt leg with necessary couplings, unions, elbows, tees, and caps for gas supply line to furnace.
-Remove 2" x 3/4" x 1" black iron tee and approx. 4 feet of exisisting 3/4 inch black iron gas pipe feed to previously uninstalled appliance. Install 2" black iron cap to open gas main where tee was previously located
i also had no paperwork so i had to call tech support and give them the serial and model numbers to find out that he mis matched and paired a micro style condenser with tube style coilso i had to add a feew lbs of freon
so when i gave the price the customer was not happy i am asking the community what do they think is a fair price for the labor not material besides freon but i did go to suppliers and shop for and buy any materials i listed as supplied .........................................................
i was recently asked to take over a HVAC job that someone else started and they walked off , i started it without establishing a price first this was a previous customer and he is also a metal fabricator contractor . the pevious guy who started the job did not do much except mess things up . The space to be cooled is two large offices with high ceiling that have large windows that recieve alot of sunlight almost like a green house so the unit was already there a 3 ton unit and a 90 % gas funace that is in a small 4 ft tall mechanical room that is about 15 feet in the air accessible by ladder, the previous contrator cut the holes for three of the 4 registers and one of the return ducts he also like banged it into a wall or droped the A coil and put a hole in the line
here is a list ofwhat i did
Install: customer supplied high efficiency gas furnace, 3-ton A/C condenser and A-coil
-Secure customer supplied condenser on elevated shelf on side of building
-Supplied and installed 3/4 inch copper A/C line, 38 feet from A-coil to condenser
-Supplied and installed 1/4 inch copper A/C line 38 feet from A-coil to condenser
-Supplied and installed 30 feet of 3/4 inch PVC condensation line.
-Once the refigerant lines were brazed, vacuum test was preformed on the system.system was vacuumed for 20 minutes until it reached negative 30 psi. After letting it sit for 30 minutes the pressure had gone to 0 psi. All outer connections and lines were checked and no leaks were detected. upon removing the outer jacket of the A-coil a leak on Freon gas side line next to TRX valve was detected. The hole was brazed shut and the system was pressure tested and it held negative 30 psi.
-Replaced liquid side brass union 90 degree fitting and missing piston nozzle.
-Fabricated 20"x20"x36"sheet metal plenum with (4) 6" outlets to supply feed ducts.
-Finished (3) 6 inch feed ducts and (1) 6 inch return duct started by previous contractor added missing sheet metal screws , sealed all seams with class 1 duct tape and added necessary hangers .
-Installed (2) 6 inch return ducts and (1) 6 inchfeed duct and registers (total duct work installed approximately 200 feet.)
-Ran 110 v electrical line in armored sheild cable from unit to hallway ceiling to Install (4) 6 inch inline 250 CFM duct booster fans in the feed duct to try to compensate for the distance between the unit and the vents .
-Suppllied and installed 42 feet of schedule 40 1 ½ inch PVC and necessary fittings to vent high effeiciency flue gas exhaust through three course brick wall to outside of building.
-Installed 3/4 inch black iron tee with 3/4 inch by 1/2 inch black iron bushing to supply gas to furnace.
-Supply and install new electronic heating and cooling thermostat and thermostat wiring inside office wall.
-Supply and install approx. 75 feet of 1/2 inch black iron pipe, 1/2 inch ball valve, and dirt leg with necessary couplings, unions, elbows, tees, and caps for gas supply line to furnace.
-Remove 2" x 3/4" x 1" black iron tee and approx. 4 feet of exisisting 3/4 inch black iron gas pipe feed to previously uninstalled appliance. Install 2" black iron cap to open gas main where tee was previously located
i also had no paperwork so i had to call tech support and give them the serial and model numbers to find out that he mis matched and paired a micro style condenser with tube style coilso i had to add a feew lbs of freon
so when i gave the price the customer was not happy i am asking the community what do they think is a fair price for the labor not material besides freon but i did go to suppliers and shop for and buy any materials i listed as supplied .........................................................
