Plumbing, Heating, AC & Electrical Services in Sun Prairie, WI

Responded to a Goodman furnace no-heat call with a 5-flash error code indicating an open rollout/open fuse condition and a blown control board fuse. Inspected the furnace control compartment and low-voltage wiring, finding loose, dangling, and spliced wires that likely caused the short. Documented the wiring condition with photos for further repair and fuse replacement.

Diagnosed a failed heat exchanger on the Lennox gas furnace and presented a repair recommendation, which was approved. The heat exchanger replacement is covered under manufacturer warranty, and the job is pending delivery of the warranty part. Documented the furnace condition and noted moisture present on the floor at the base of the unit.

Performed annual heating maintenance on a vertical gas furnace with PVC intake/exhaust venting, cleaning the unit and inspecting the cabinet, condensate drain assembly, and electrical connections. Verified the furnace and attached Aprilaire whole-home humidifier showed no signs of rust, frost, cracking, or damage, and completed the system check with equipment in good working condition.

Responded to a no-heat call on a 2018 Goodman gas furnace and diagnosed a broken low-voltage wire on the thermostat side as the cause of the unit not calling for heat. Repaired the damaged wiring to restore thermostat-to-furnace control circuit continuity, and the system is now able to call for heat and deliver warm air.

Performed a full tune-up on a Goodman upright gas furnace, including cleaning of the unit and inspection of all major components. Verified the cabinet, PVC venting, wiring, and ductwork connections were intact and operating properly, with no signs of rust, frost, or damage observed. The unit was cleaned and checked, with no deficiencies found.

Located and repaired a refrigerant leak in the line set where a nail had punctured the copper tubing inside the exterior wall cavity, accessing the damaged section through an opening cut in the wall sheathing. Following the repair, pressure tested the system with nitrogen to verify leak-free integrity, then evacuated and recharged the A/C system with refrigerant to proper operating levels using a digital manifold gauge set.

Diagnosed a no-heat condition on a gas-fired boiler and found the supply valve closed; opening it revealed three separate active water leaks from burst, corroded piping in the overhead and underfloor runs, including a pinhole failure with copper corrosion at a pipe junction. Repairs could not be completed during this visit, and the boiler remains out of service pending approval to proceed with piping repairs.

Performed scheduled furnace cleaning and safety inspection as part of a prepaid maintenance visit, cleaning the unit and verifying proper operation. Inspected the Honeywell whole-home humidifier mounted on the supply plenum along with its associated wiring, tubing, and sensor, and checked the condensate pump and drain line for secure connections and proper routing, with no leaks, corrosion, or visible damage observed.

Performed a complete clean and check on a 3-year-old Lennox gas furnace, inspecting the burner assembly, venting, condensate drain, and electrical connections, and verifying proper operation and heat output. The unit is running efficiently with no damage, rust, or leaks observed, and the attached whole-home humidifier was also inspected. Completed ahead of warranty expiration to ensure the system remains in good working condition.

Performed a complete cleaning and inspection of the gas furnace, including the burner assembly, heat exchanger, and associated components, and verified the whole-house humidifier and flue connections were intact. Combustion analysis confirmed operation within factory specifications, with a stack temperature of 87.4°F, O₂ at 11.4%, CO at 8 ppm, CO₂ at 5.38%, and efficiency at 95.5%. The unit is operating safely and efficiently with no deficiencies noted.

Performed a tune-up and cleaning on an oil-fired furnace, including replacement of the oil filter, air filter, and oil nozzle. Cleaned the burner air inlet to correct slightly dirty combustion, and no intake adjustment was required. Verified clean burn, confirmed batteries tested good, and measured a temperature rise of 65°F, within normal operating range.

Performed a visual inspection of the Lennox gas furnace to verify that recent maintenance was completed correctly, checking the cabinet, access panels, PVC venting, and supply plenum/ductwork, with no evidence of rust, frost, or damage found. Also inspected the outdoor condenser, noting heavy debris and vegetation around the unit that should be cleared to maintain proper airflow.

Performed a boiler cleaning and system inspection to address low system water pressure. Disassembled and cleaned the backflow preventer multiple times to restore water flow to the system. Isolated the expansion tank and recharged its air precharge to 18 psi, then adjusted the water feed valve to maintain 18 psi system fill pressure, which had dropped below the proper operating level.

Performed a complete maintenance tune-up on an 11-year-old Comfortmaker gas furnace, including cleaning the unit and inspecting its components, with a carbon monoxide check completed. The furnace was found to be operating normally, with no deficiencies or repairs required.

Performed a prepaid annual furnace cleaning and inspection, including cleaning the center section and condensate trap. Verified all components and operation, and the furnace is now running within factory specifications.

Performed a furnace tune-up, including cleaning and a full operational inspection. During the check, the vent/inducer assembly was found making abnormal noise, and the connected components appeared improperly secured. Findings were presented to the homeowner, and a furnace replacement was recommended; documentation is on file.

Performed a gas fireplace tune-up and inspected the firebox, burner assembly, log set, and pilot control valve. Found significant dust, lint, and debris accumulated across the vermiculite media and around the burner, which can restrict airflow and cause low pilot flame and gas bleed-through after shutoff. Documented the pilot control valve operation and the debris buildup, and recommended further evaluation for a replacement gas valve or log/burner assembly if pilot and shutoff issues persist.

Performed annual fall heating maintenance on a 15-year-old Ruud furnace, including cleaning and a full operational inspection. Verified combustion performance with a calibrated combustion analyzer, recording O2 at 11.7%, CO at 7 ppm, and CO2 at 5.2–5.3%, with all readings within acceptable operating ranges. Unit is operating safely and ready for the heating season.

Diagnosed a no-heat condition on a Goodman furnace and found the vent/flue termination pipe blocked by a nest of dried grass and debris, preventing proper exhaust and causing the unit to lock out. Cleared the obstruction from the PVC vent, restored unrestricted venting, and cycled the furnace through a complete heating sequence to verify normal operation.

Performed a furnace tune-up, including cleaning and a full operational inspection, with combustion analysis and a camera scope of the heat exchanger; the heat exchanger showed no cracks or failures, with rivets in place, and the unit tested within normal temperature rise specifications. Cleaned and serviced the Aprilaire 700 series humidifier. Discussed furnace replacement options with the homeowner, who will follow up when ready.