We fix Sub-Zero built-ins, column fridges, and undercounter units throughout the southwest Denver corridor. From Bow Mar to Grant Ranch to Marston, we know these kitchens and dispatch fast.
The stretch of the metro from Bow Mar and Grant Ranch through Marston and into Littleton is full of custom homes with integrated Sub-Zero refrigeration. We service it every week.
Sub-Zero units are not like standard refrigerators. They use dual sealed compressor systems, magnetic door gaskets, and NanoTechnology air purification, and they are usually built flush into custom cabinetry. That means a repair is as much about protecting your millwork and cabinet faces as it is about the refrigeration itself. We work carefully around panel-ready fronts and tight galley layouts common in Grant Ranch and Bow Mar homes.
Because we run our routes out of Littleton and stay inside the roughly 25-mile southwest metro service area, a call from Marston or the Chatfield side rarely means a long wait. Our phone is answered 24/7 at (720) 903-2603, service visits run daily 8:00 AM to 6:00 PM, and we have carried OEM-quality Sub-Zero parts and diagnostic experience since 2014.
We are an independent repair company, not a manufacturer-authorized dealer. That keeps our advice straight: if a $40 gasket or a defrost sensor solves the problem, we will not talk you into replacing a compressor.
If your unit is doing any of these, it is a repair we handle routinely across the corridor:
The southwest metro sits around 5,350 feet, and the air is dry most of the year. That combination is hard on refrigeration seals. Sub-Zero door gaskets dry out and lose their pliability faster here than at sea level, which lets warm air seep in and forces the compressors to work overtime.
Thin, dry mountain-front air also carries fine dust that clogs condenser coils quickly, especially in homes with pets. When we service a Sub-Zero in Bow Mar or Marston, a full condenser cleaning and gasket check is standard, not an upsell. Getting those two things right often restores proper temperatures without any parts at all.
Straightforward and no surprises, from first ring to final invoice.
Reach a real person any time at (720) 903-2603, or use our online scheduling page. Tell us your model and what it is doing so we bring the right parts.
We schedule a daily 8 AM to 6 PM window and route from Littleton, so Bow Mar, Grant Ranch, Marston, and nearby neighborhoods usually get prompt attention.
Our $89 diagnostic service-call fee covers a full inspection of the sealed system, condenser, gaskets, and controls. That fee is credited toward the repair if you approve it.
You get a firm price before any work begins. We use OEM-quality, factory-specified parts and test the unit through a full cycle before we leave.
Whether your Sub-Zero is in a Bow Mar estate, a Grant Ranch two-story, or a Marston ranch home, the process and the number are the same. Call (720) 903-2603 and we will get a technician who knows Sub-Zero refrigeration to your door.
Quick Answers
Littleton Appliance Repair services Sub-Zero built-ins, columns, and undercounter units throughout the southwest Denver metro, including Bow Mar, Grant Ranch, Marston, and Littleton. We are an independent company that has worked on Sub-Zero refrigeration since 2014. Call (720) 903-2603 to schedule; the phone is answered 24/7.
There is an $89 diagnostic service-call fee, and that amount is credited toward the repair if you approve it. Because Sub-Zero units vary widely, the final price is set after on-site diagnosis and quoted before any work begins. Common fixes like gaskets or a condenser cleaning start well below a sealed-system repair.
We route service visits out of Littleton and stay within about a 25-mile southwest metro radius, so neighborhoods like Marston, Grant Ranch, and Bow Mar typically get prompt, often same-week scheduling. Service visits run daily from 8:00 AM to 6:00 PM, and we take calls around the clock.
FAQ
Anything else — call any hour, a real person answers.
Yes. We service Sub-Zero built-in side-by-sides and bottom-freezers, refrigerator and freezer columns, undercounter drawer units, and wine and beverage centers throughout the southwest metro.
On dual-compressor Sub-Zero models, each section has its own sealed system, so one side can run warm while the other stays cold. The usual culprits are a failed evaporator fan, a defrost issue, or a refrigeration-side fault. We diagnose which system is affected before quoting a repair.
No. We are an independent appliance-repair company and are not authorized or certified by Sub-Zero. We use OEM-quality, factory-specified parts and have specialized in high-end refrigeration repair since 2014.
It can. At roughly 5,350 feet the air is dry, which stiffens and cracks door gaskets sooner and lets fine dust clog condenser coils. Both problems make the compressors run hot and struggle to hold temperature, and both are easy to catch during a routine service visit.
Answered 24/7 · $89 diagnostic credited to the repair
Book OnlineReviews
Our built-in Sub-Zero was keeping the freezer fine but the upper fridge zone was sitting around 55. Turned out to be the dual-evaporator setup, exactly what the tech guessed on the phone. Brian had the sealed system diagnosed the first visit, ordered the part, and had us back to normal within the week. He didn't try to sell us a new unit like the last place did.
One of the dual-stack burners on our Wolf range would click and click but never light. He mentioned it's common up here because the burners need to be calibrated for the altitude, which no one had ever told us. Relit perfectly after and he adjusted the others while he was at it.
Fixed our Sub-Zero the same week we called. Fair price, no upsell.
Our dual-zone wine cabinet had drifted so the bottom zone wouldn't hold temp and there was condensation collecting on the glass. They diagnosed it quickly but the part had to come from the manufacturer and took about four days, so we were without it for most of a week. Once it arrived the fix was solid and both zones are holding right where they should. Worth the wait, just be ready for the parts delay on these.
Miele dishwasher wouldn't drain, standing water in the bottom every cycle. Bad drain pump. In and out in about an hour and he cleaned out the filter housing that was part of the problem too.
The door gasket on our 15-year-old Sub-Zero had gotten brittle and it was sweating around the seal. New OEM gasket and it seals like new again. Appreciated that they used the factory part instead of some universal thing.
Thermador wall oven quit heating right before we were hosting. Called in the morning and they got someone out that same afternoon. Bad igniter. He had the part on the truck and we still made our dinner.
Ice maker in our Sub-Zero was making cloudy hollow cubes and barely any of them. He flushed the system, replaced a valve, and now it actually keeps up when we have people over. Nice guy, wore booties in the house without being asked.
Solid work on our Bosch dishwasher, the drain pump had failed. The only thing is the $89 service call fee felt a little steep before I knew they credit it toward the repair. Once I proceeded it came off the bill, so no real complaint, just wish I'd understood that up front.
Our Viking freezer was building up a wall of frost and not defrosting on its own. Turned out to be the defrost heater. Fixed it and explained what was going on so I understood why it happened.
Two burners on our Wolf cooktop wouldn't spark. Tech recalibrated them for the elevation and swapped the igniters. Works better than it has in years honestly.
Warm upper zone on our Sub-Zero, classic apparently. They knew exactly what it was, ordered the evaporator part, and came back to install it a couple days later. Honest and easy to deal with the whole way through.
Not many people around here will even touch a Gaggenau. These guys did, got the control board sorted, and were straight with me about the cost of the part on a unit this expensive.
Miele steam oven throwing an error and shutting off mid-cook. The tech was great and clearly knew the unit, but he ran about 40 minutes behind the window they gave me and I had to shuffle some things around. Fixed it in one visit though and it's been perfect since, so I'd still call them again.
Had them out for our built-in outdoor grill that wasn't lighting evenly. Didn't expect them to do outdoor units but they did and dialed it in for the altitude. Grilling season saved.
Quick, clean, and they answered when I called at 9pm the night before. Dishwasher's draining again.
This was a big one, the sealed system on our Sub-Zero failed and that's a job a lot of shops won't take on. They did it right, used factory-spec parts, and stood behind the work. Given it's a $12k built-in I'm glad I found someone who actually knew these inside and out instead of just replacing the whole fridge.
Wine fridge kept fogging up on the door and the temp was bouncing around. Fixed same visit and no more condensation.