Do you service condo and high-rise HVAC in downtown Walnut Creek?

Yes. We work on PTAC units, compact ducted systems, VRF, and ductless mini-splits across downtown condos. The biggest constraint downtown is usually the building's electrical capacity, so we check that before quoting any upgrade, and we coordinate with what your HOA allows.

How does the $75 diagnostic work?

We charge $75 to come out and find the actual fault, not guess at it. If you book the repair with us, that $75 comes off the bill. Either way you get a written, itemized quote before we start, so there are no surprises at the end.

Am I on MCE or PG&E in Walnut Creek, and does it change my rebate?

MCE is the default electricity generation in Walnut Creek, though some customers have opted back to PG&E generation, and your utility bill tells you which. It can affect which heat pump rebates pay. We work with BayREN, MCE, PG&E, and EBCE/Ava plus manufacturer rebates, and we confirm what is actually funding when we write your estimate.

Can you repair a mid-century furnace or do I have to replace it?

Plenty of the 1950s through 70s ranches in Saranap and Walnut Heights still run on repairable equipment. If a part like an inducer motor or igniter fixes it safely, we repair it. We only recommend replacement when the heat exchanger is cracked or the system is genuinely unsafe, and we tell you which it is in writing.

Heating & cooling

AC & HVAC repair in Walnut Creek.

AC, furnace, heat pump, and ductless work across Walnut Creek, from downtown condos to Northgate.

Call (925) 999-4095

ADRIUM Service Solutions runs HVAC repair, installation, and maintenance throughout Walnut Creek, seven days a week. I am Andrew Kuznetsov, the owner, and I came to this trade from engineering, so I tend to read a system the way you read a circuit. Find the actual fault first, then quote it. Every visit starts with a $75 diagnostic that we waive when you book the repair, and you get a written, itemized quote before anyone touches a wrench.

Walnut Creek sits in the Diablo Valley, warmer than the coast in summer and milder than the inland Tri-Valley. Summer afternoons run into the upper 80s and low 90s, winter nights drop to the mid-30s. That swing is mild on paper, but it is hard on equipment that was sized for one season and ignored in the other. A condenser that limps through July and a furnace that short-cycles in January often turn out to be the same neglected system.

The housing stock here is not one thing. You have downtown high-rise and mid-rise condos from the 1970s through the 2000s, mid-century ranches in Saranap and Walnut Heights with original ductwork, the Rossmoor 55+ community, and newer Northgate-corridor builds with multi-zone layouts. Each of those calls for a different approach, and a shop that treats them all the same is going to oversell somebody.

The repairs we actually run here

Across Walnut Creek we handle AC repair, furnace repair, heat pump repair, and ductless mini-split service, plus full system replacement when a unit is genuinely done. We are EPA Section 608 Universal certified, which matters the moment refrigerant is involved. If a tech is opening a sealed system or recovering R-410A, that certification is the law, not a sticker.

The calls cluster by neighborhood. In the mid-century ranches it is usually a 20-year-old gas furnace with a cracked heat exchanger or a failed inducer motor, paired with a condenser on its last season. Downtown condos bring PTAC units, compact ducted air handlers, and the occasional VRF head that has lost charge. Newer Northgate homes tend to call about zoning dampers and thermostats that lost their schedule after a power event. I quote the fix that fits the equipment in front of me, not the one with the biggest ticket.

Why the condo work is its own thing

Condo HVAC in Walnut Creek does not look like single-family HVAC, and pretending it does gets owners into trouble. Many downtown buildings run PTAC units or compact systems, some newer construction uses VRF, and ductless mini-splits show up constantly as retrofits where there was never room for a full duct run.

The limiting factor downtown is almost always electrical capacity. A 1980s condo panel was not built for a modern heat pump pulling a full electrical load, so before I quote an upgrade I look at what the panel and the HOA will actually allow. When a targeted repair keeps your unit running another five to ten years, I will tell you that, especially if you are an owner trying to line up with the building's capital plan instead of replacing on someone else's timeline.

Heat pumps, rebates, and getting the numbers right

More Walnut Creek homeowners are moving off gas, and heat pumps are where most of that goes. We are a Daikin authorized servicer with factory training, and we have completed Mitsubishi Electric factory training courses, so the two brands that dominate ductless and inverter work here are ones we know at the board level, not the brochure level. See Daikin and Mitsubishi if you want the detail on those.

MCE is the default electricity generation in Walnut Creek, though some customers have opted back to PG&E generation, and which one you are on changes what rebates pay. We work with BayREN, MCE, PG&E, and EBCE/Ava, plus manufacturer instant rebates. Amounts and funding vary by territory and cycle, so we confirm what is actually paying when we write your estimate. For a deeper look before you replace anything, a home energy assessment and the DOE Home Energy Score we run will tell you whether the building shell is fighting your system. Larger projects go through our HVAC division, Bay Area HVAC Service.

What working with us looks like

You call, we schedule, and a tech who can actually diagnose shows up. The $75 diagnostic covers the time to find the real fault, and it comes off the bill when you book the repair. No verbal numbers that change at the end. The quote is written and itemized, line by line, so you can see the part, the labor, and the why.

If you want to stop reacting to breakdowns, our maintenance plan covers seasonal checks on the equipment that the Diablo Valley summer and winter take turns punishing. We are based in San Ramon, licensed under CSLB #1136642, and Walnut Creek is a short drive, so we are out here often.

Common questions, Walnut Creek.

Do you service condo and high-rise HVAC in downtown Walnut Creek?: Yes. We work on PTAC units, compact ducted systems, VRF, and ductless mini-splits across downtown condos. The biggest constraint downtown is usually the building's electrical capacity, so we check that before quoting any upgrade, and we coordinate with what your HOA allows.
How does the $75 diagnostic work?: We charge $75 to come out and find the actual fault, not guess at it. If you book the repair with us, that $75 comes off the bill. Either way you get a written, itemized quote before we start, so there are no surprises at the end.
Am I on MCE or PG&E in Walnut Creek, and does it change my rebate?: MCE is the default electricity generation in Walnut Creek, though some customers have opted back to PG&E generation, and your utility bill tells you which. It can affect which heat pump rebates pay. We work with BayREN, MCE, PG&E, and EBCE/Ava plus manufacturer rebates, and we confirm what is actually funding when we write your estimate.
Can you repair a mid-century furnace or do I have to replace it?: Plenty of the 1950s through 70s ranches in Saranap and Walnut Heights still run on repairable equipment. If a part like an inducer motor or igniter fixes it safely, we repair it. We only recommend replacement when the heat exchanger is cracked or the system is genuinely unsafe, and we tell you which it is in writing.