Family-owned since 1953
AC Repair & HVAC in Norwalk. Priced before we start.
60+ five-star reviews
CSLB #992029 (license lookup, opens in new tab)Same-day serviceLocally & family-owned
AC repair, air conditioner installation, and heating service, arranged through the same phone number Norwalk has trusted for plumbing since 1953. One Hour Plumbing Service coordinates licensed HVAC technicians for homes and businesses across Norwalk, southeast LA County, and northern Orange County: you call Mickey, Mickey sets up the crew, and you get one honest point of contact from the first call to the finished job.
Call when...
- The AC runs but the air coming out isn't cold
- The unit won't turn on, or trips the breaker when it does
- Warm air upstairs, cold air downstairs, or one room that never cools
- Ice on the refrigerant line or the indoor coil
- A grinding, squealing, or banging noise from the outdoor unit
- The electric bill jumped and the system runs all day to keep up
- The furnace won't light, or the heat smells like something burning
- Water pooling under the indoor unit (often a clogged condensate drain, which Mickey can clear himself)
How Mickey handles it
- 01Call Mickey. Describe what the system is doing and he'll tell you what it likely is.
- 02If it's a plumbing-side problem, like a clogged condensate drain line, he handles it on the spot.
- 03For the HVAC work itself, he sets up a licensed, insured HVAC crew he's vetted, usually same day or next day in summer.
- 04You get a straight quote before the work starts, and it doesn't change without your OK.
- 05Mickey stays the point of contact until the house is cool again.
Why call a plumber about your AC?
Because you already know the number, and because Mickey will tell you the truth. Half of Norwalk's AC calls in July go to whichever company answers first, and that's how homeowners end up with a $9,000 replacement quote for a $300 capacitor. When you call One Hour Plumbing Service, you talk to Mickey, who has no reason to oversell a system he isn't installing. He'll tell you whether it sounds like a repair or a replacement, and then set up the right crew for it.
There's a practical overlap too. Condensate drain lines, the PVC line that carries water away from the indoor unit, clog with algae and back up into the house every summer. That's plumbing, and Mickey clears it himself.
What our HVAC partner handles
One Hour Plumbing Service is a licensed plumbing contractor (CSLB #992029). Heating and air conditioning is a separate California license (C-20), so the HVAC work is done by a licensed, insured HVAC contractor that Mickey coordinates for you. The crew handles:
- AC repair: capacitors, contactors, fan motors, refrigerant leaks, thermostats, frozen coils
- AC replacement and new installation, sized to the house, not to the sales commission
- Ductless mini-split installation for additions, garages, and rooms the central system doesn't reach
- Furnace and heater repair and replacement
- Heat pump installation
- Seasonal tune-ups before summer and winter
- Ductwork repair and sealing
AC replacement in southeast LA County: when it's actually time
A central AC in this climate usually lasts 15 to 20 years. Past that, repairs stop being worth it, and a new high-efficiency unit cuts the summer electric bill enough to matter. But a 10-year-old system with a dead capacitor does not need replacing, no matter who tells you it does. Mickey will give you an honest read on the phone, and the crew confirms it on site before anyone talks about a new unit.
Older homes in Norwalk, Downey, Whittier, and La Mirada were often built without central air and had it added later. Undersized ducts, aging electrical panels, and attic units with no service access are common, and they affect what a replacement costs. Ask about it on the call.
Straight talk about referrals
Our HVAC partner pays us a referral fee when we bring them a job. We're telling you that up front because that's how Mickey runs the business. It doesn't change what you pay, you're never obligated to use them, and Mickey wouldn't send you to anyone he wouldn't send to his own family. You don't call them, you call Mickey. He makes the call, sets it up, and stays on the job until it's done.
Straight prices, no bait
Free estimates, by phone or in person. No "$99 special" bait. The price you're quoted is the price, and it doesn't change without your OK.
“Amazing service and I will continue to use these guys... They were so nice, professional & did a great job.. While everyone else was giving me a week out, these guys showed up right away... Highly recommended!!!”
Lilly C · Google review
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Available in Norwalk, La Mirada, Downey, Whittier and every city we serve.
Tips from Mickey on ac repair & hvac
Common questions
Do you do AC repair?
Through a licensed HVAC crew that Mickey coordinates. You call One Hour Plumbing Service, Mickey sets up the repair, and he stays the point of contact until it's fixed. Plumbing-side AC issues, like a clogged condensate drain, he handles himself.
How much does AC repair cost in Norwalk?
Common repairs like a capacitor or contactor are a few hundred dollars. Refrigerant leaks and compressor problems cost more. Call, describe what the unit is doing, and you'll get a straight quote before anyone comes out.
Should I repair or replace my air conditioner?
Rule of thumb: if the unit is under 12 years old and the repair is under a third of a replacement, repair it. Over 15 years with a major failure, replace it. Mickey will tell you which side of that line you're on.
Why is water leaking from my AC?
Usually a clogged condensate drain line. Algae builds up in the PVC line and water backs up into the drain pan and onto the floor. That's a plumbing fix Mickey does himself. If it's a frozen coil instead, the HVAC crew handles it.
Can you get someone out today in the summer?
Usually, yes. Call as early as you can. Mickey coordinates the crew's schedule and gives you a real arrival window, not a guess. If your system is down and someone in the house is at risk in the heat, say so on the call.
Do you install mini-splits?
Yes, through the HVAC crew. Mini-splits are the usual answer for garages, additions, and back bedrooms that the central system never reaches, and for older homes without ductwork.
Need a plumber?Call or text now.
Open 24 hours · Free estimates · Licensed & bonded