Model Y & Model 3 Heat Pump No Heat: What Tesla Replaced and What Owners Paid
By the EV Fix Guide team · · 3 min read
Losing cabin heat in winter is more serious on a heat-pump Tesla than on most cars: the Model Y has no separate resistive cabin heater, so when the compressor cannot run there is no proper heat at all [3]. One Edmonton owner got by on seat heaters at about -33 °C [1].
Tesla Motors Club owners have documented every stage of this problem, from the first cold-weather failures in 2020–2021 builds to compressor and supermanifold replacements. Here is what fixed their cars.
What owners learned
- Early winter failures were often fixed by replacing the pressure-temperature sensors, partly under a voluntary recall, plus software [1][2].
- A January 2022 firmware update ended deep-cold heat loss for some owners, but not all [2].
- Even a brand-new car can lose heat from a low refrigerant charge; one was recharged the same day [3].
- When the compressor fails, Tesla usually replaces the supermanifold (Octovalve assembly) with it: £2,864 + VAT itemised in the UK, $3,600 paid out of warranty in the US [4][5].
- Call Tesla support rather than only booking in the app; one owner got a no-heat visit moved up by about a week [3].
The first wave: cold air in Nordic winters
The long-running “Model Y heat pump issues” thread started with reports of new cars in Finland, Sweden and Norway blowing only cold air [1]. A September 2020-build owner had both high- and low-side pressure-temperature sensors replaced, lost heat again a month later, got a software push that worked for a day, and finally had Tesla order a new heat pump and supermanifold, with a rental car in the meantime [1]. Another 2021 car had its heat pump replaced after it sprayed fluid while warming up, with no repeat afterwards [1].
After Tesla’s January 2022 software update, one Model Y that had lost heat for three hours of a 12-hour drive at -14 °C had no repeat, and a Texas owner was booked for pressure sensor replacement under a voluntary recall [2]. Members were not convinced software alone could solve every case [2].
No heat on a new car: check the refrigerant
A brand-new 2023 Model Y Long Range blew cold air within days of delivery, with an alert that cabin climate controls needed service and heating or cooling was limited [3]. Service found the refrigerant low, leak-tested the system without finding a leak, suspected a factory underfill and returned the car the same day with working heat [3].
Another member said a technician reinstalled the firmware, which restored heat for a few days [3]. A reset or firmware reinstall is a reasonable first ask, but not always a lasting fix.
When the compressor fails: compressor plus supermanifold
A 2021 Model Y owner had the HVAC die just after the 50,000-mile warranty ran out. Service said the compressor had failed, which meant replacing the supermanifold too, and the owner paid $3,600. The A/C was worse afterwards and quit on the drive home, with no resolution posted [4].
A UK Model Y at 45,000 miles with an A/C fault code got the same pair under warranty at Tesla Solihull: supermanifold £1,043.75, compressor £658.71 and 7.04 hours of labour (£1,161.60), a total of £2,864.06 plus VAT [5]. A member questioned whether replacing both parts on a mostly working system was guesswork [5]. Report any climate warning while the car is still under warranty.
Independent repair
None of the threads we read gave a confirmed independent-shop price for this job. Independent Tesla specialists do work on the supermanifold, as the video below from a repair and used-parts shop shows, but refrigerant work needs proper recovery equipment and is not a driveway job.
What it cost owners
Full repair guide and cost table
Step-by-step fix, tools and Tesla vs independent shop vs DIY prices: Tesla Heat Pump / Octovalve Failure: Symptoms & Cost.
Tesla Service $1,300 - $2,200 · independent shop $500 - $950 · DIY not recommended
Sources: owner forum threads and references
- [1] Model Y heat pump issues · Tesla Motors Club, Dec 2021Nordic no-heat reports; sensors, software, then heat pump and supermanifold.
- [2] Heat pump issues fixed? · Tesla Motors Club, Jan 2022Owners after the January 2022 software fix; sensor recall.
- [3] Model Y heating failure · Tesla Motors Club, Dec 2023New car with low refrigerant, recharged the same day.
- [4] Model Y HVAC System : ( · Tesla Motors Club, Oct 2024$3,600 compressor and supermanifold just out of warranty.
- [5] Model Y - Broken Air Con · Tesla Motors Club, Jun 2025Itemised UK warranty invoice for supermanifold and compressor.
We summarise owner reports in our own words and link to the original threads; individual results vary. Videos belong to their creators and are embedded from YouTube.
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This guide is for information only. High-voltage components (orange cables) can be lethal — leave them to trained technicians. Not affiliated with Tesla, Inc.