Health and Safety Update - March 17th, 2020

daikin air conditioner error codes

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daikin air conditioner error codes
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daikin air conditioner codes

If you're looking for help fixing your daikin air conditioner, look no further! Our comprehensive daikin air conditioner repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model's error codes.


CODE: A0.
RESULT: External protection device activated. External protection device connected to the terminal strip T1-T2 of indoor unit is activated.

CODE: A1.
RESULT: Malfunction of indoor unit PCB Malfunction due to noise Defect of indoor unit PCB.

CODE: A3.
RESULT: Malfunction of drain level control system Drain piping clogging, improper drain piping work Defect of drain pump. Defect of float switch.

CODE: A4.
RESULT: Malfunction of freezing protection Shortage of water volume Low water temperature setting Defect of 26WL. Defect of water temperature thermistor.

CODE: A5.
RESULT: High pressure control in heating, freeze-up protection control in cooling Clogged air filter of indoor unit and short-circuit Defect of indoor unit heat exchanger thermistor.

CODE: A6.
RESULT: Fan motor locked, overload, overcurrent Defect of connector contact Defect of indoor unit PCB Defect of fan motor.

CODE: A7.
RESULT: Malfunction of swing flap motor Failure of swing flap motorm, Defect of indoor unit PCB Jammed swing mechanism/blade.

CODE: A8.
RESULT: Malfunction of power supply Overcurrent of AC input, Defect of power supply voltage.

CODE: A9.
RESULT: Malfunction of electronic expansion valve drive Defect of electronic expansion valve coil, Defect of indoor unit PCB, Defect of connector contact.

CODE: AA.
RESULT: Heater overheat 26WH is activated.

CODE: AF.
RESULT: Malfunction of a humidifier system Water leakage of humidifier (option), Failure of swing float switch. Improper drain piping incline.

CODE: AH.
RESULT: Malfunction of dust collector of air cleaner Defect of dust collecting element Defect of high voltage power supply unit Stained insulator part Defect of indoor unit PCB.

CODE: AJ.
RESULT: Malfunction of capacity setting (Indoor unit PCB) Capacity setting adaptor is not installed when replacing PCB Defect of indoor unit PCB.

CODE: C1.
RESULT: Failure of transmission (between indoor unit PCB and fan PCB) Defect of transmission of fan motor control driver.

CODE: C4.
RESULT: Malfunction of liquid pipe thermistor for heat exchanger Defect of connector contact. Defect of liquid pipe thermistor for heat exchanger.

CODE: C5.
RESULT: Malfunction of gas pipe thermistor for heat exchanger Defect of connector contact. Defect of gas pipe thermistor for heat exchanger.

CODE: C6.
RESULT: Malfunction of fan motor control driver Defect of fan motor sensor system Defect of fan motor control driver.

CODE: C7.
RESULT: Front panel driving motor fault Defect of front panel driving motor Defect of limit switch.

CODE: C9.
RESULT: Malfunction of suction air thermistor Defect of connector contact Defect of thermistor for suction air.

CODE: CA.
RESULT: Malfunction of discharge air thermistor Defect of connector contact. Defect of thermistor for discharge air.

CODE: CC.
RESULT: Malfunction of humidity sensor system Defect of connector contact Defect of humidity sensor.

CODE: CJ.
RESULT: Malfunction of thermostat sensor in remote controller Defect of remote controller thermistor Malfunction due to noise Defect of remote controller PCB. Outdoor Unit.

CODE: E0.
RESULT: Protection devices actuated (unified) Protection device connected to outdoor PCB actuated Defect of protection device connector contact.

CODE: E1.
RESULT: Defect of outdoor unit PCB Malfunction due to noise Defect of outdoor unit PCB?.

CODE: E3.
RESULT: Actuation of high pressure switch (HPS) Dirty outdoor unit heat exchanger and suction filter Defect of HPS Clogged refrigerant piping Defect of connector contact.

CODE: E3.
RESULT: System No.1. Actuation of high pressure switch (HPS). Dirty outdoor unit heat exchanger Clogged refrigerant piping Defect of HPS Shortage of water volume Defect of connector contact Outdoor Unit.

CODE: E4.
RESULT: Actuation of low pressure switch (LPS) Clogged refrigerant piping Shortage of gas. Defect of connecting connector Defect of outdoor unit PCB.

CODE: E5.
RESULT: Overheat of inverter compressor motor Shortage of refrigerant amount Defect of connector contact Leakage of four way valve.

CODE: E5.
RESULT: Inverter compressor motor lock Inverter compressor lock Incorrect wiring.

CODE: E6.
RESULT: STD compressor motor overcurrent/lock Closed stop valve STD compressor lock.

CODE: E6.
RESULT: System No.1 Compressor overcurrent Defect of EXP. valve Defect of compressor Shortage of refrigerant amount.

CODE: E7.
RESULT: Malfunction of outdoor unit fan motor. Faulty contact of fan motor connector. Defect of fan motor, Defect of fan motor driver.

CODE: E8.
RESULT: Overcurrent of inverter compressor, Defect of compressor, Defect of outdoor unit PCB Defect of inverter main circuit capacitor Defect of power transistor.

CODE: E9.
RESULT: Malfunction of electronic expansion valve coil Defect of electronic expansion valve Defect of connector contact Defect of outdoor unit PCB.

CODE: EA.
RESULT: Malfunction of four way valve Defect of four way valve Defect of outdoor unit PCB Shortage of gas Defect of thermistor.

CODE: EC.
RESULT: Malfunction of entering water temperature Malfunction of cooling water temperature. Defect of thermistor. Defect of outdoor unit PCB.

CODE: EF.
RESULT: Malfunction of thermal storage unit Defect of electronic expansion valve of thermal storage unit Defect of thermal storage PCB.

CODE: F3.
RESULT: Malfunction of discharge pipe temperature Shortage of gas. Defect of connector contact. Clogged refrigerant piping Defect fo discharge pipe thermistor.

CODE: F6.
RESULT: Abnormal high pressure in cooling Defect of outdoor unit fan motor Defect of electronic expansion valve Defect of heat exchanger thermistor, Defect of outdoor unit PCB.

CODE: F6.
RESULT: Refrigerant overcharged Refrigerant overcharged Disconnection of heat exchanger thermistor Disconnection of outdoor air thermistor Disconnection of liquid pipe thermistor.

CODE: H0.
RESULT: Malfunction of sensor system of compressor, Harness is disconnected, or defective connection Defect of PCB.

CODE: H1.
RESULT: Malfunction of humidifier unit damper, Defect of limit switch Defect of damper.

CODE: H3.
RESULT: Malfunction of high pressure switch (HPS), Defect of high pressure switch. Broken wire. Defect of connector contact, Defect of outdoor unit PCB.

CODE: H4.
RESULT: Malfunction of low pressure switch (LPS), Defect of low pressure switch Broken wire. Defect of connector contact, Defect of outdoor unit PCB.

CODE: H5.
RESULT: Malfunction of compressor motor overload thermistor Defect of connector contact. Defect of compressor motor overload thermistor.

CODE: H6.
RESULT: Malfunction of position detection sensor, Faulty contact of compress or cable. Defect of compressor, Defect of outdoor unit PCB.

CODE: H7.
RESULT: Malfunction of outdoor fan motor signal Faulty contact of fan wiring Defect of fan motor driver Defect of fan motor.

CODE: H8.
RESULT: Malfunction of compressor input (CT) system Defect of power transistor. Defect of reactor. Faulty wiring of inverter system Defect of outdoor unit PCB.

CODE: H9.
RESULT: Malfunction of outdoor air thermistor. Defect of connector contact Defect of thermistor for outdoor air.

CODE: HC.
RESULT: Malfunction of (hot) water temperature thermistor Defect of connector contact Defect of outdoor unit PCB Defect of thermistor for water temperature.

CODE: HF.
RESULT: Alarm in thermal storage unit with ice Thermal storage group defective wiring Defect of setting Excess of thermal storage tank numbers.

CODE: HJ.
RESULT: Malfunction of thermal storage tank water level Low water level Defect of switch setting Water level detecting sensor failure Defect of connector contact Outdoor Unit.

CODE: J1.
RESULT: Malfunction of pressure sensor Defect of pressure sensor connector contact. Defect of pressure sensor. Defect of outdoor unit PCB.

CODE: J2.
RESULT: Malfunction of current sensor of compressor Defect of current sensor Defect of outdoor unit PCB Defect of compressor.
CODE: J3.
RESULT: Malfunction of discharge pipe thermistor. Defect of connector contact Defect of outdoor unit PCB Defect of discharge pipe thermistor.

CODE: J4.
RESULT: Malfunction of low pressure equivalent saturated temperature sensor system Defect of connector contact Defect of thermistor Defect of outdoor unit PCB (Multi-split, Super-multi ).

CODE: J5.
RESULT: Malfunction of suction pipe thermistor Defect of connector contact Defect of outdoor unit PCB Defect of suction pipe thermistor.

CODE: J6.
RESULT: Malfunction of heat exchanger thermistor Defect of connector contact Defect of outdoor unit PCB Defect of heat exchanger thermistor.

CODE: J7.
RESULT: Malfunction of liquid pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of liquid pipe thermistor.

CODE: J8.
RESULT: Malfunction of liquid pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of liquid pipe thermistor.

CODE: J9.
RESULT: Malfunction of gas pipe thermistor (Refrigerant circuit and others) Defect of connector contact Defect of outdoor unit PCB Defect of gas pipe thermistor.

CODE: JA.
RESULT: Malfunction of high pressure sensor Defect of connector contact Defect of outdoor unit PCB Defect of high pressure sensor.

CODE: JC.
RESULT: Malfunction of low pressure sensor Defect of connector contact Defect of outdoor unit PCB Defect of low pressure sensor.

CODE: JE.
RESULT: Malfunction of sub-tank thermistor Defect of connector contact Defect of outdoor unit PCB Defect of sub-tank thermistor.

CODE: JF.
RESULT: Malfunction of heating thermistor for heat exchanger Defect of connector contact Defect of outdoor unit PCB Defect of heat exchanger thermistor.

CODE: JH.
RESULT: Malfunction of oil temperature thermistor Defect of connector contact Defect of outdoor unit PCB Defect of oil temperature thermistor.

CODE: L0.
RESULT: Malfunction of inverter system Shortage of power supply capacity Defect of inverter PCB Defect of power transistor.

CODE: L1.
RESULT: Malfunction of inverter PCB Defect of compressor wiring Blown fuse Defect of outdoor unit fan motor Defect of inverter PCB.

CODE: L3.
RESULT: Electrical box temperature rise Fin temperature rise due to short-circuit Defect of power transistor Defect of outdoor unit fan Defect of outdoor unit PCB.

CODE: L4.
RESULT: Malfunction of inverter radiating fin temperature rise Fin temperature rise due to short-circuit Defect of fin thermistor.

CODE: L5.
RESULT: Inverter instantaneous overcurrent (DC) Closed stop valve Defect of compressor.

CODE: L6.
RESULT: Inverter instantaneous overcurrent (AC) Overcharge of refrigerant amount Defect of compressor Shortage of power supply capacity Defect of inverter unit.

CODE: L8.
RESULT: Overcurrent of inverter compressor Abnormal high pressure rise due to clogged refrigerant circuit and others Defect of compressor.

CODE: L9.
RESULT: Malfunction of inverter compressor startup Faulty of pressure equalization Defect of compressor wiring Defect of compressor.

CODE: LA.
RESULT: Malfunction of power transistor Defect of power transistor Defect of inverter PCB Defect of compressor.

CODE: LC.
RESULT: Malfunction of transmission between outdoor unit PCB and micro-computer Defect of grounding connection Defect of outdoor unit PCB Malfunction due to noise.

CODE: LC.
RESULT: Malfunction of transmission between control and inverter PCB Defect of connector contact Defect of inverter PCB Malfunction due to noise Defect of outdoor unit control PCB.

CODE: P0.
RESULT: Shortage of refrigerant amount (thermal storage unit) Shortage of refrigerant Clogged refrigerant piping Outdoor Unit.

CODE: P1.
RESULT: Power voltage imbalance, open phase Open phase Voltage imbalance between phases Faulty main circuit capacitor. Defect of wiring contact.

CODE: P2.
RESULT: Automatic refrigerant charge operation stop Closed stop valve. Closed valve of refrigerant tank.

CODE: P3.
RESULT: Malfunction of thermistor in electrical box Electrical box temperature rise (ambient temperature rise) Defect of fin thermistor, Defect of outdoor unit PCB.

CODE: P4.
RESULT: Malfunction of radiating fin temperature sensor Defect of radiating fin thermistor Defect of wiring contact Defect of outdoor unit PCB.

CODE: P8.
RESULT: Heat exchanger freezing protection during automatic refrigerant charging (Close the refrigerant cylinder. Start again from step 1.).

CODE: P9.
RESULT: Malfunction of fan motor (humidifier unit) Defect of fan motor Broken relay harness Defect of outdoor unit PCB Defect of connector contact.

CODE: P9.
RESULT: Automatic refrigerant charge operation completed.

CODE: PA.
RESULT: Broken wire of heater (humidifier unit) Defect of heater unit Defect of outdoor unit PCB Defect of thermistor.

CODE: PA.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of master unit is empty.

CODE: PC.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of slave unit 2 is empty.

CODE: PE.
RESULT: Automatic refrigerant charge operation nearly completed.

CODE: PH.
RESULT: Malfunction of temperature (humidifier unit) Defect of heater unit Defect of thermistor Defect of connector contact Defect of outdoor unit PCB.

CODE: PH.
RESULT: Empty refrigerant cylinder during automatic refrigerant charging Refrigerant cylinder of slave unit 1 is empty.

CODE: PJ.
RESULT: Malfunction of capacity setting (Outdoor unit PCB) Capacity setting adaptor is not installed Improper capacity setting adaptor Defect of outdoor unit PCB.

CODE: PJ.
RESULT: Improper combination between inverter and fan driver Mistake of inverter PCB Mistake of control PCB Mistake of inverter fan PCB System.

CODE: U0.
RESULT: Shortage of refrigerant Shortage of refrigerant Closed stop valve Clogged refrigerant piping.

CODE: U1.
RESULT: Reverse phase, open phase Reverse phase, open phase of power wiring Wrong wiring. Defect of outdoor unit PCB.

CODE: U2.
RESULT: Defect of power supply voltage or instantaneous power failure. Defect of power supply voltage Instantaneous power failure Defect of wiring contact.

CODE: U3.
RESULT: Check operation not executed. Check operation not executed.

CODE: U3.
RESULT: Malfunction of transmission Malfunction due to noise Defect of outdoor unit PCB Wrong wiring.

CODE: U4.
RESULT: Malfunction of transmission between indoor and outdoor unit Defect or indoor-outdoor transmission wiring Malfunction due to noise Defect of indoor unit PCB and outdoor unit PCB.

CODE: U5.
RESULT: Malfunction of transmission between indoor unit and remote controller Defect of remote controller wiring Defect of indoor unit PCB Malfunction due to noise Defect of remote controller main/sub setting.

CODE: U6.
RESULT: Malfunction of transmission between indoor units Faulty wiring Defect of indoor unit PCB Malfunction due to noise.

CODE: U7.
RESULT: Malfunction of transmission between main body micro-computer. INV micro-computer Harness disconnection/broken wire between PCB Defect of outdoor unit PCB.

CODE: U7.
RESULT: Malfunction of transmission between outdoor units Defect of wiring between outdoor units Defect of outdoor unit switch setting Defect of wiring between outdoor thermal storage units.

CODE: U8.
RESULT: Malfunction of transmission between remote controllers Defect of remote controller main/sub setting Defect of remote controller wiring. Defect of remote controller PCB Others.

CODE: 77.
RESULT: System No. 1 Malfunction of fan inter lock Defect of relay contact Broken wire.

CODE: 78.
RESULT: System No. 2 Malfunction of fan inter lock Defect of relay contact Broken wire.

CODE: 7A.
RESULT: System No. 2 Malfunction of current sensor of compressor Defect of current sensor. Defect of compressor Defect of outdoor unit PCB.

CODE: 7C.
RESULT: System No. 2 Malfunction of pump inter lock Cooling water pump interlock actuated.

CODE: 80.
RESULT: Malfunction of entering water temperature thermistor. Defect of connector contact. Defect of entering water temperature thermistor.

CODE: 81.
RESULT: Malfunction of leaving water temperature thermistor Defect of connector contact Defect of leaving water temperature thermistor.

CODE: 82.
RESULT: System No. 1 Malfunction of refrigerant thermistor Defect of connector contact Defect of refrigerant thermistor.

CODE: 83.
RESULT: System No. 2 Malfunction of refrigerant thermistor Defect of connector contact Defect of refrigerant thermistor.

CODE: 84.
RESULT: System No. 1 Malfunction of heat exchanger thermistor. Defect of connector contact. Defect of heat exchanger thermistor.

CODE: 85.
RESULT: System No. 2. Malfunction of heat exchanger thermistor. Defect of connector contact. Defect of heat exchanger thermistor.

CODE: 86.
RESULT: System No. 2. Malfunction of discharge pipe thermistor. Defect of connecting connector Defect of discharge pipe thermistor.

CODE: 88.
RESULT: System No. 2. Malfunction of discharge pipe temperature. Shortage of gas. Defect of discharge pipe thermistor Defect of connector contact. Clogged refrigerant piping.

CODE: 89.
RESULT: Malfunction of brazed-plate heat exchanger freezing Dirty heat exchanger. Shortage of refrigerant amount Defect of thermistor.

CODE: 8A.
RESULT: System No. 2 Malfunction of leaving water temperature thermistor Defect of connector contact Defect of leaving water temperature thermistor.

CODE: 8E.
RESULT: System No. 1 Malfunction of suction pipe thermistor 1 for heating Defect of connector contact Defect of suction pipe thermistor.

CODE: 8F.
RESULT: System No. 1 Malfunction of suction pipe thermistor 2 for heating Defect of connector contact Defect of suction pipe thermistor.

CODE: 8H.
RESULT: Abnormal high hot water temperature Three-way valve malfunction. Defect of thermistor Defect of water temperature setting.

CODE: 90.
RESULT: Abnormal chilled water quantity, abnormal AXP. Shortage of water volume Disconnection of AXP.

CODE: 91.
RESULT: System No. 2 Malfunction of electronic expansion valve Defect of connector contact Defect of electronic expansion valve coil.

CODE: 92.
RESULT: System No. 2 Malfunction of suction pipe thermistor Defect of connector contact Defect of suction pipe thermistor.

CODE: 94.
RESULT: Malfunction of transmission (between heat reclaim ventilation unit and fan unit) Defect of fan unit PCB Defect of connecting wire between (1) and (2).

CODE: 95.
RESULT: System No. 1 Malfunction of inverter system Defect of fan inverter unit.

CODE: 96.
RESULT: System No. 2 Malfunction of inverter system Defect of fan inverter unit.

CODE: 97.
RESULT: Malfunction of thermal storage unit Defect of thermal storage unit.

CODE: 98.
RESULT: Malfunction of thermal storage brine pump Actuation of thermal storage brine pump overcurrent (OC).

CODE: 99.
RESULT: Malfunction of thermal storage brine tank Low water level of thermal storage brine tank System.

CODE: U9.
RESULT: Malfunction of transmission (other system) Defect of communication between other indoor unit and outdoor unit Other indoor unit electronic expansion valve failure.

CODE: UA.
RESULT: Defect of indoor/outdoor power supply Wrong model connections Wrong PCB connected Improper power supply Defect of PCB.

CODE: UA.
RESULT: Malfunction of field setting Malfunction of field setting by remote controller Defect of remote controller wiring Defective connection of optional device Defect of indoor unit PCB.

CODE: UA.
RESULT: Improper combination of indoor and outdoor units Excess of connected indoor units Malfunction of field setting Uncanceled service mode. Defect of outdoor unit PCB.

CODE: UA.
RESULT: Remote temperature setting wire disconnection Remote temperature setting wire disconnection Defect of connector contact.

CODE: UC.
RESULT: Malfunction of setting of centralized controller address. Address duplication of centralized controller.

CODE: UE.
RESULT: Malfunction of transmission between indoor unit and centralized controller Malfunction of wiring between indoor unit and centralized controller Defect of setting of group number Defect of indoor unit PCB.

CODE: UF.
RESULT: Wiring and piping mismatch Improper connection of transmission wiring between indoor-outdoor units and outdoor-outdoor units.

CODE: UH.
RESULT: Malfunction of system Improper connection of transmission wiring between indoor- outdoor units and outdoor-outdoor units Defect of indoor and outdoor unit PCB (RA: Mismatching indoor and outdoor units, Defect of voltage, Freeze protection in other indoor unit (k).

CODE: UJ.
RESULT: Malfunction of transmission (Accessory devices) Defect of accessory devices Faulty wiring.

CODE: M1.
RESULT: Malfunction of centralized remote controller PCB. Defect of centralized remote controller PCB.

CODE: M8.
RESULT: Malfunction of transmission between optional controllers for centralized control Other centralized control power disconnection Centralized control reset switch ON Defect of transmission wiring. Central remote controller address change.

CODE: MA.
RESULT: Improper combination of optional controllers for centralized control Improper combination of optional controllers for centralized control More than one master controller is connected Faulty setting of centralized control Defect of centralized control.

CODE: MC.
RESULT: Address duplication, improper setting Address duplication of central remote controller.

CODE: 60.
RESULT: External protection device actuated Actuation of external protection device Defect of output signal wiring Defect of control PCB.

CODE: 64.
RESULT: Malfunction of indoor air thermistor Defect of connecting connector Defect of thermistor for indoor air Defect of control PCB.

CODE: 65.
RESULT: Malfunction of outdoor air thermistor Defect of connector contact Defect of control PCB Defect of outdoor air thermistor.

CODE: 6A.
RESULT: Malfunction of damper system Defect of connector contact Defect of damper motor Defect of limit switch Defect of control PCB.

CODE: 70.
RESULT: System No. 2 Compressor overload Shortage of refrigerant amount Defect of connector contact Leakage of four way valve.

CODE: 71.
RESULT: System No. 2 Compressor overcurrent Shortage of refrigerant amount Short-circuit Defect of compressor.

CODE: 72.
RESULT: System No. 2 Fan motor overcurrent Defect of fan motor connector contact Defect of fan motor Defect of PCB.

CODE: 73.
RESULT: System No. 2 Malfunction of high pressure (HPS) actuated Dirty heat exchanger Clogged refrigerant piping Defect of HPS Shortage of water volume Defect of connector contact.

CODE: 74.
RESULT: System No. 2 Malfunction of low pressure switch (LPS) Clogged refrigerant piping Shortage of gas. Defect of connector contact Defect of LPS.

CODE: 75.
RESULT: System No. 2 Malfunction of low pressure sensor Defect of connector contact Defect of PCB Defect of low pressure sensor.

CODE: 76.
RESULT: System No. 2 Malfunction of high pressure sensor Defect of connector contact Defect of PCB Defect of high pressure sensor.

daikin air conditioner error codes

daikin air conditioner codes


See What Our Customers Are Saying:

by Linda, Toronto on Twintech Heating and Cooling

My 19 year old furnace stopped working when the cold weather hit in November, and I was left without heat. I interviewed several companies and found TWINTECH HEATING and COOLING to be very knowledgeable, quick to respond to my inquiries and very competitively priced.
Dave provided all of the information and pricing ahead of time and set up the appointment for the installation. Greg and Mitch arrived on time to do the installation and worked quickly and efficiently to complete the job.
After the completion of the installation, Dave followed up to ensure that everything was working well and that I didn't have any concerns.
Overall, this was a low-stress and flawless experience from start to finish. I would highly recommend TWINTECH HEATING and COOLING to anyone that requires a new furnace.

by Sean, Whitby on Twintech Heating and Cooling

Our 20 year old furnace broke down during the first cold weekend this past November and our usual HVAC company never returned our phone call. Their loss, missing out on a sale since we didn't want to spend much fixing an old furnace and our 40 year old air conditioner was also long overdue for replacement. We proceeded in obtaining three different quotes for furnace and air conditioner replacement, and proceeded with the one we received from Twintech.


Dave was friendly, knowledgable and accomodating to our schedule and provided with us with a price that fell in the middle of the three quotes that we had. We felt that the Amana furnace and air conditioner he quoted us on were the best products and value offered to us and felt most comfortable with the professionalism and reputation of Twintech.


Greg, Grant and Mitch were at our house for installation the day after we decided to proceed. The guys were friendly and informative, the job was completed efficiently and workmanship appears excellent. Our house is certainly much more comfortable with the new two-stage variable speed Amana furnace compared to the old clunker! And, we're looking forward to enjoying the new air conditioner once summer rolls around again. Thanks Twintech!

by Bill, Oshawa on Twintech Heating and Cooling

We are very happy with our new furnace. The service was excellent the guys worked 6 hours straight through and there was no mess at all they took the old furnace box’s etc with them they then explained everything to us they were very helpful and pleasant , when we need a new air conditioner we know who to call!

by Ken, Bomanville on Twintech Heating and Cooling

The crew from sales to installation was very professional and had great attention to detail

by Tracy, Pickering on Twintech Heating and Cooling

We couldn’t have been more impressed with Twintech - from our first service call with Mitch who took the time to thoroughly diagnose the issue with our furnace, to Dave who proposed a well thought out solution to meet our needs and finally Greg and team who acted quickly to install given we had no heat.


We did our due diligence by soliciting quotes from alternate providers and were shocked and disappointed by the aggressive and manipulative tactics used.


Twintech was honest in their approach, detailed in their product knowledge, reasonably priced, diligent in their follow-up and valued our business.


Well done Twintech! You made this a positive experience for us and our new furnace works beautifully!

by Skapoor, Ajax on Twintech Heating and Cooling

We recently purchased an Amana high efficiency furnace and humdifier through Twintech. The work was completed very professionally and the quality of the workmanship was high. There was some additional sheet metal work required to complete the installation, which they were able to complete themselves. Overall I am very pleased with the work and would highly recommend Twintech for a furnace replacement.

by Steve, Oshawa on Twintech Heating and Cooling

We were very pleased with every aspect of the work that was done. They were very professional and polite. They arrived when they said they would and job was completed on estimated time


We would highly recommend them to whoever needed a recommendation


We have a very large dog and they were very understanding and respectful of him being around

by Patrick, Toronto on Twintech Heating and Cooling

The blower on our furnace stopped working leaving us with a cold house. Dave from TwinTech responded immediately to our HomeStars service request. From beginning to end Dave was nothing but helpful, friendly and professional, he did a great job of walking us through the quote and scope of work.


The replacement of the furnace went smoothly. The Guys did a great job, everyone was very friendly and polite. There were no hiccups, or unexpected costs. The only surprise was they left the work area cleaner than it was before they started.


Was a great experience with the whole TwinTech team. Its been a couple of months since the new furnace has been installed and its working great!

by Ed, Whitby on Twintech Heating and Cooling

I heard about TwinTech when researching new furnaces at furnaceprices.ca. After contacting them about my broken down furnace, Dave came to my house the next day to assess my situation and requirements for a new furnace. He recommended one that had stainless steel heat exchangers which sold me since my previous furnace had issues with a rusted secondary heat exchanger that had to be replaced. Dave also set me up with an appointment with an energy audit company so that I could take advantage of a rebate to help improve the energy efficiency of my home and get some money back. A few days later, Greg, Grant, and Mitch came to install the new furnace and remove the old one. When delivering and removing the furnaces, they were very careful not to damage my floors and walls, and even laid out red carpeting to protect the floors. They were very friendly and professional. The installation was completed in the time they said it would take and they cleaned up their work areas. Within a week, Dave called to follow-up to see how everything was going. I have already recommended them to several friends and family members who may need new furnaces soon.

by Fred, Toronto on Twintech Heating and Cooling

Twintech did a great job, from Dave the Sales Rep to the Office staff and The Professional Technicians who did the installation. They were professional, courteous, knowledgable and informative. From beginning to follow up we were completely satisfied with everything. Thanks Again. Sincerely The Laytons

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daikin air conditioner error codes