Our Repairs

Sub-Zero BI-42SD/0 compressor replacement in San Jose, CA

December 23, 2022 2 min read
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Nur HVAC completed a compressor replacement on a Sub-Zero BI-42SD/0 built-in refrigerator in San Jose, CA, that had lost cooling due to a failed compressor. Our team handles sealed-system work like this around the area, including Mountain View. The technicians carried out a full sealed-system service, from recovering the old refrigerant to recharging the unit, so the refrigerator could cool reliably again.

Replacing a compressor on a built-in refrigerator is more than a swap of parts. The sealed refrigerant system has to be properly evacuated, cleaned, leak-tested, and recharged for the new compressor to run efficiently and last. When a compressor fails, it can leave debris and old oil in the lines, so flushing the system and fitting a new filter dryer protects the replacement compressor. Skipping any of these steps can leave moisture, old oil, or leaks in the system that shorten the life of the repair.

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What our technicians did

  • Refrigerant recovery: removed the old freon for proper recycling.
  • Compressor removal: cut out and dismantled the old compressor for recycling.
  • Line flushing: flushed the freon line to clear out old oil.
  • Filter dryer replacement: installed a new filter dryer to keep the system clean and dry.
  • Leak test: pressurized the system with nitrogen to check for leaks.
  • Recharge: filled the system with fresh freon to restore cooling.

Why sealed-system procedure matters

The nitrogen leak test and the fresh filter dryer are what make a compressor replacement last. A sealed system that is not cleaned and verified can fail again within a short time, taking the new compressor with it. Following the full procedure protects the investment in the repair.

With the new compressor installed and the sealed system serviced end to end, the Sub-Zero refrigerator was returned to dependable cooling. On every repair, Nur HVAC follows proper sealed-system procedures so the work holds up over time. We bring the same refrigerant-handling discipline to our HVAC repair work, and we regularly serve homeowners around Mountain View.

Sub-Zero BI-42SD/0 refrigerator compressor replaced by Nur HVAC

Sub-Zero BI-42SD/0 refrigerator compressor replaced by Nur HVAC

Sub-Zero BI-42SD/0 refrigerator compressor replaced by Nur HVAC

Sub-Zero BI-42SD/0 refrigerator compressor replaced by Nur HVAC

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Reviews

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4.9185+ reviews onYelp
Helen L.
Helen L.
Jul 2022
Yelp

“I highly value honest person and David is very honest and reliable. I wanted to install a home electric charger with very minimum knowledge and some peoples may over charge or push me to do extra works. But David told me what I need and finished work quick and clean. I highly recommend him for any electric work.”

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Anton T.
Nov 2022
Yelp

“We wanted to install an AC in our condo and replace the old gas furnace. We are happy that we had business with Nur HVAC. Their estimator was a professional who explained us all the options including the least expensive ones. Their quotes and estimates looked honest and fair, their pricing was way better than the competitors (almost twice less the amount than some other greedy dealers). We decided to proceed and made an appointment for the installation. The equipment installed is modern and quiet. The consumables used were all high quality and brand new. The guys were professional, on time, diligent and not cutting corners during the installation process. All conduits look neat and nice. Everything looks great. They left the place tidy and clean. After we used the system for a couple of days we realized that some custom tuning might be necessary for our apartment, to which Nur HVAC quickly made a new appointment and fixed all the issues for free. Nur HVAC are reliable, responsible and dependable. I highly recommend them to everyone who needs HVAC services in Bay Area. P.S. We got a few quotes from other companies too. They were sending us basically a sales person who would be just trying to figure out how much we could afford to pay. So I ended up with a few obviously unfair quotes which I didn't want to proceed with. Also the sales people were not always nice. Once they find out your budget is tight, they kinda lose interest in you. Reluctantly talking and just leaving as soon as they can.”

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Priya B.
Sep 2022
Yelp

“My AC unit stopped working 2 months ago and I called several service companies for a quote. Nur offered a free appraisal and quote. I decided to go ahead with him and he was extremely professional, thorough and knowledgeable. He arrived exactly on time, wore mask and booties inside the house, showed me all the readings to educate me on where the problem was and fixed the issue within the time he estimated. Yesterday, during a record breaking heat wave, it felt like my AC unit stopped working again. I called Nur and he came down to inspect the unit, and showed me where PG&E had turned off my AC unit remotely. And he didn't charge me for the visit since there wasn't any problem. 10/10 would recommend , and will only use him for all my AC needs from here onwards.”

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5.0505+ Google reviews
Helen Li
Helen Li
Sep 2023

“We are so glad that we made the right choice for working with Nur HVAC on adding heat pump AC with our existing furnace. The sales representative Ilias was very prompt in responding all our questions and offered a very reasonable price. Fedor and Shalai, the installation team, installed all the new facilities PERFECTLY. They really know their job - all their tasks were super organized and clean - they even cleaned all working spaces every day before they left! (Big Kudos!!) In addition to the quality installation, they also explained how the system works clearly and patiently. We are waiting for inspection now but we believe it will pass thanks to the great work. Thanks team!”

Parveen Rathee
Parveen Rathee
Sep 2023

“With the heat wave going on and all of a sudden my AC system failing, I couldn’t find anyone to come immediately except Nur HVAC which fit me in and sent Michael over within a few hours to check and repair my system. Michael found a number of issues that he fixed and also made suggestions for future maintenance. I really appreciated the good work and happy to have my AC working quickly again.”

Jacqueline Wood
Jacqueline Wood
Feb 2026

“I’m a property manager for several rentals here in the California area and I have to say I’ve always been extremely satisfied with all of the HVAC technicians that have come out to help us with our residence. Each technician has been helpful, professional, punctual, repaired issues efficiently and have never overcharged us for any labor parts or services. We will continue to have them as our list of contractors. Thank you to Islam and David for your continued service.”

Gautam Gopinadhan
Gautam Gopinadhan
Sep 2025

“Excellent hvac installers. Reasonably priced, extremely clean work. Installers were: Eldar and Maxim. Very efficient, detail oriented. Very respectful. Consult: Elias. Very responsive and knowledgeable. Nur is a diamond certified Mitsubishi installer. And the work quality shows.”

Xiaochen Lian
Xiaochen Lian
Sep 2025

“Team Elias, Eldar, and Konstantin did an excellent job installing a dual-fuel HVAC system at my place. They are knowledgeable, easy to communicate with, and genuinely care about the quality of their work. I'm so glad I made the right choice in hiring them.”

Peter Wellington
Peter Wellington
Sep 2025

“Our air conditioner started making strange noises. But cane out to look at the condenser unit. It turns out that someone had left a garbage bag in top that got sucked in and wrapped around the fan. They did not charge is anything. This is the third time we have used Nir for heating or air conditioning. They have been prompt, efficient, reasonably priced and courteous. I highly recommend them.”

Kaho Lee
Kaho Lee
Jun 2026

“Islam is very knowledgeable, patient and a diligent professional. Thanks Islam!”

Peter Wellington
Peter Wellington
Sep 2025

“Islam D was very efficient in troubleshooting and repairing the air conditioner”

Mridul Agrawal
Mridul Agrawal
Sep 2025

“Nur HVAC are real professionals and get the job done. I had a last-minute call to them, and they were able to accommodate me for next day, and the tech Islam worked really hard, kept updated on every step and possible fall outs in future due to the unit being old. Overall, they were really professional, quick and would recommend for sure.”

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