Found system boiler supply temperature sensor 35°F off the actual temperature of the boiler causing boiler to run long cycles. Replaced temperature sensor with customer provided universal replacement sensor and boiler immediately shut off on temperature. There is potential that on the coldest nights and all the radiators getting up to temperature that the expansion tank may be too small but it is currently functional and in good shape. Did not note any other issues on the boiler at this time. Recommend watching unit over the next couple of days to check that pop off has stopped leaking water.

15.2 SEER2; 12.5 EER2; 7.5 HSPF2 Make: Goodman Model: GLZS4BA1810 Heat Pump AMST24BU1300 Air Handler 3 Kw Electric Heat Installation shall include: Equipment specified above plus materials and labor to include: All necessary duct work. • All work will be completed in a professional workmanlike manner. • Necessary Electrical is inluded. • Goodman Factory Warranty: Ten (10) Years all parts • One (1) Year Labor Warranty Provided by Comfort Central, Inc. • Ten (10) Year Guarantee on Comfort Central, Inc. Workmanship. • 100% Customer Satisfaction Guarantee for the first year.

Performed heating tune up service on heat pump system checking all electrical components, refrigerant balance, unit start up, operation, defrost, shutdown. Replacement of customer provided filter. Everything looks and runs great!

Found condenser fan running in reverse. Found TXV to be slam shut not allowing the refrigerant to flow through. Had to cycle the reversing valve to equalize the refrigerant. This system is 15 years old heat pumps last generally 12 to 15 years. We’re gonna get you a price on replacement or repair.

We will cut and remove the damaged length of duct and attach a new length of duct with a coupling and securely fasten duct back to the floor joist.

Found no leaks on system refrigerant circuit - did find restriction at outdoor tcv causing high pressure cycles of outdoor unit. Recommend replacement of TXV and Refrigerant Filter Drier. Will call with pricing and availability.

Performed heating tune up service for two gas furnace systems checking all electrical components, cleaning of all furnace components including burners and flame sensor, treatment of drains, performed full combustion analysis while checking start up, light off, operation, shutdown, and emergency safeties. Everything looks and runs great!

Found outdoor unit icing up - defrosted system and recovered and reweighed system refrigerant charge to manufacturer's specifications. System not engaging defrost mode - recommend replacement of board and sensor. Will call with availability of defrost board.

Replacement of outdoor unit board and defrost coil temperature sensor. Cycled system to check operation. Everything runs normally again!

Performed heating tune up service on dual fuel system checking all electrical components, heat pump refrigerant balance, unit start up, operation, defrost, shutdown. Cleaning of all furnace components, replaced customer provided filter. Performed full combustion analysis on furnace system. Everything looks and runs great!

Performed heating tune up service on heat pump system checking all electrical components, refrigerant balance, unit start up, operation, defrost, shutdown. Everything looks and runs great!

We will replace the brazed plate heat exchanger and all pumps with stainless steel. We will also raise the pipes 1 foot above the pump head for better operation. We will add a strainer and flush the system to get out rust flakes. The reason for stainless pumps instead of cast iron is the radiant loop does not seem to be oxygen barrier tube. The rust flakes would return with cast iron pumps.

Performed heating tune up service on heat pump system checking all electrical components, refrigerant balance, unit start up, operation, defrost, shutdown. Customer complaint that system had trouble keeping up on coldest day of year so far - checked electric heat and system defrost as well as thermostat comfort settings for auxiliary heat strips. Everything looks and runs great!

We will replace pumps in the aster bed and the front bedroom. The new pumps will be Taco 007E pumps. They have the ability to remove rust flakes from the impeller. If unsuccessful after 15 minutes, it will shut itself down rather than burn out. We will raise the height of the pipes to 12" above the outlet of the pumps for less resistance on the pump. All 4 pumps will have auto vents to keep them from becoming air bound at the highest point. we will also back flush the flat plate heat exchanger. We will flush the system with a high pressure pump to try to get the rust flakes out of the radiant loops. (the cause of the pump failure.)

Found system fully operational - checked heat / emergency heat - checked contactor and all low voltage wiring - recommended try system as is for now.

Performed heating tune up services on heat pump and dual fuel systems checking all electrical components, refrigerant balance, unit start up, operation, defrost, shutdown, checking of all furnace components, cleaning of drains, changing of customer provided filters.

Found defrost board not defrosting on test - replaced defrost board and cycled defrost to melt the rest of the outdoor unit and checked defrost thermistor. Found defrost thermistor will also have to be replaced - defrost thermistor was already on order but was not in at time of call - will call as defrost thermistor comes in to schedule return trip - returned 12/12/25 with defrost thermistor - replaced thermistor and cycled system to check operation. Everything runs normally again!

Performed heating tune up service on dual fuel system checking all electrical components, refrigerant balance, unit start up, operation, defrost, shutdown, cleaning of all furnace components, performance of full combustion analysis. Treatment of drains and condensate pump. Everything looks and runs great!

Performed heating tune up service on heat pump system checking all electrical components, refrigerant balance, unit start up, operation, defrost, shutdown, treatment of drains. Everything looks and runs great!

Performed heating tune up service on gas hot water boiler system checking all electrical components, cleaning all boiler components including burners, pilot, flame sensor, performance of full combustion analysis. Checking of all safeties, system start up, operation, shutdown. Everything looks and runs great!

Returned 12/8 to replace warranty furnace board. After replacing board cycled system to check operation. Everything runs normally again.

Found system off upon arrival - turned system on to cycle - system started up in defrost cycle. Believe problem encountered was defrost operation - allowed defrost mode to finish and checked cycle of heat pump and electric heat. Everything runs normally at this time. Explained the defrost circuit and normal operation of heat pump. System will check after about 90 minutes of run time if there is ice on outdoor coil and will shift into defrost. Part of the defrost operation is to stop the top fan on the outdoor unit, shift the unit into cooling to raise the temperatures and pressures of the refrigerant to help shed off the ice. The normal byproduct of defrost will be water dripping from the outside unit and sometimes steam coming from the top of the unit.

System was operational upon arrival - checked system operation, tested safeties, checked and cleaned system drain, checked flame sensor, cycled system several times to make sure it lights off and cycles normally. Believe system failure could have been caused by a slow drain between the trap and the condensate pump which turned system off temporarily to allow drain to catch up. Flushed drain after cleaning to test.

Performed heating tune up service on dual fuel and heat pump system checking all electrical components, refrigerant balance, unit start up, operation, defrost, shutdown, cleaning of all furnace components, treatment of drains, performance of full combustion analysis. Everything looks and runs great!

Resynchronized master bedroom thermostat with MHK1 wireless kit and cycled to check operation - if system keeps dropping communication with thermostats may have to replace MHK1 wireless receiver. Everything cycles normally at this time.