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Air Conditioning Repair & Heating Repair in Walnut, CA

Fast, affordable AC repair, furnace repair, heat pump service and HVAC installation for Walnut homes and businesses. Same-day appointments. 24/7 emergency service. Flat, upfront pricing.

Call (855) 459-5498
Walnut HVAC hotline, open 24 hours(855) 459-5498AC repair • Heating repair • Installation
Same-day service in Walnut24/7 emergency AC & heating repairAll brands repairedFlat upfront pricing
Home › Locations › Walnut, CA

Your local HVAC company in Walnut, California

When the air conditioner stops cooling in the middle of a Walnut heat wave or the furnace goes quiet on a cold night, you need an HVAC company that answers the phone and shows up. Los Angeles Air Conditioning Heating provides air conditioning repair, heating repair, furnace and heat pump service, ductless mini split installation, duct repair and complete HVAC replacement throughout Walnut and the surrounding communities of Diamond Bar, La Puente, Covina, West Covina, Industry, Chino Hills.

Our technicians carry parts for every major brand, quote a flat price after the diagnosis and finish most AC and heating repairs on the first visit. Whether you need emergency AC repair at midnight, a furnace tune-up before winter or a new energy-efficient system sized correctly for your home, one call to (855) 459-5498 handles it.

Why Walnut calls us

  • Same-day appointments across Walnut and 24/7 emergency dispatch
  • Flat, upfront pricing you approve before work starts
  • Technicians trained on every major HVAC brand
  • Trucks stocked so most repairs finish in one visit
  • Clean, respectful work in your home or business
  • Honest advice on repair versus replacement

Common calls from Walnut

  • AC not cooling or not blowing cold air
  • Air conditioner not turning on or tripping the breaker
  • Furnace not working, no heat, heater blowing cold
  • Furnace short cycling or making a loud bang
  • Heat pump frozen or blowing cold air in winter
  • AC frozen coil, water leaks or loud noises
  • Old system replacement and new AC or furnace installation

HVAC services in Walnut, CA

Every service below has its own Walnut page with details, common repairs and answers to the questions we hear most from local homeowners.

AC Repair in Walnut

When your air conditioner quits on a hot afternoon in Walnut, you do not want a callback tomorrow. Our AC repair technicians reach homes across…

Ac repair in Walnut »

Air Conditioning Service in Walnut

Air conditioning service in Walnut keeps your system efficient through the long California cooling season. We clean, test, tune and repair central…

Ac service in Walnut »

Central Air Repair in Walnut

Central air repair in Walnut for split systems, packaged rooftop units and heat pumps. If the whole house is warm, the outdoor unit is silent or the…

Central air repair in Walnut »

AC Tune-Up in Walnut

A spring AC tune-up in Walnut is the cheapest insurance against a mid-summer breakdown. Our technicians inspect, clean and test every component of…

Ac tune-up in Walnut »

AC Installation & Replacement in Walnut

AC installation and replacement in Walnut with properly sized equipment, clean workmanship and pricing you understand before we start. Whether your…

Ac installation in Walnut »

AC Not Cooling in Walnut

AC not cooling in Walnut? An air conditioner that runs but blows warm air usually has a low refrigerant charge, a frozen evaporator coil, a failed…

Ac not cooling repair in Walnut »

AC Compressor Repair in Walnut

AC compressor repair in Walnut for units that hum, click, trip the breaker or simply will not start. The compressor is the heart of your air…

Ac compressor repair in Walnut »

AC Frozen Coil & Noisy AC Repair in Walnut

Frozen AC coil in Walnut? Ice on the indoor coil or copper lines means airflow or refrigerant is off, and running it will damage the compressor. We…

Frozen coil and ac noise repair in Walnut »

Emergency AC Repair in Walnut

Emergency AC repair in Walnut, 24 hours a day, 365 days a year. When the air conditioner dies during a heat wave, at night, on a weekend or on a…

Emergency ac repair in Walnut »

Heating Repair in Walnut

Heating repair in Walnut for furnaces, heat pumps, wall heaters and packaged units. When the heat stops on a cold night in Walnut, our technicians…

Heating repair in Walnut »

Furnace Repair in Walnut

Furnace repair in Walnut for gas and electric furnaces of every brand and age. A furnace that will not ignite, keeps shutting off or blows cold air…

Furnace repair in Walnut »

Furnace Service & Tune-Up in Walnut

Furnace service in Walnut before the first cold snap keeps your heater safe, efficient and reliable. Our furnace tune-up inspects burners, ignition,…

Furnace service in Walnut »

Furnace Not Working / No Heat in Walnut

Furnace not working in Walnut? No heat on a cold morning is one of the most common calls we take, and one of the fastest to fix. Our technicians…

No-heat repair in Walnut »

Furnace Short Cycling Repair in Walnut

Furnace short cycling in Walnut, turning on and off every few minutes, wears out parts fast and leaves the house cold. We find the cause, whether it…

Furnace short cycling repair in Walnut »

Heating & Furnace Installation in Walnut

Heating installation in Walnut for gas furnaces, electric furnaces and heat pumps, sized and installed to manufacturer specifications. When your old…

Heating installation in Walnut »

Emergency Heating Repair in Walnut

Emergency heating repair in Walnut, available 24 hours a day. A furnace or heat pump that fails on a winter night is not a wait-until-Monday problem,…

Emergency heating repair in Walnut »

Heat Pump Repair in Walnut

Heat pump repair in Walnut for systems that will not heat, will not cool, ice over or run nonstop. Heat pumps are the most common new HVAC systems in…

Heat pump repair in Walnut »

HVAC Repair in Walnut

HVAC repair in Walnut for every part of your heating and cooling system: air conditioners, furnaces, heat pumps, air handlers, ductwork and…

Hvac repair in Walnut »

HVAC Service & Maintenance in Walnut

HVAC service in Walnut that keeps your heating and cooling running at peak efficiency year-round. Our maintenance visits cover the air conditioner in…

Hvac service in Walnut »

HVAC Contractor in Walnut

Looking for an HVAC contractor in Walnut who answers the phone, shows up on time and charges what was quoted? Los Angeles Air Conditioning Heating…

Hvac company in Walnut »

Emergency & Same Day HVAC Repair in Walnut

Emergency HVAC repair in Walnut, 24 hours a day, 7 days a week. When heating or cooling fails at the worst possible time, our same-day HVAC…

Emergency hvac repair in Walnut »

Residential HVAC Repair in Walnut

Residential HVAC repair in Walnut for single-family homes, condos, townhomes and apartments. We repair and maintain the air conditioners, furnaces…

Residential hvac repair in Walnut »

Commercial HVAC Repair & Installation in Walnut

Commercial HVAC repair and installation in Walnut for offices, restaurants, retail stores, warehouses, medical suites and multi-unit buildings. When…

Commercial hvac in Walnut »

Ductless Mini Split Repair & Installation in Walnut

Ductless mini split repair and installation in Walnut for garages, additions, ADUs, sunrooms and whole homes without ductwork. We install and service…

Ductless mini split service in Walnut »

Air Duct Repair & Cleaning in Walnut

Air duct repair, sealing and cleaning in Walnut. Leaky, crushed or dirty ducts waste up to 30 percent of the heating and cooling you pay for and make…

Duct repair in Walnut »

Thermostat Repair & Smart Thermostat Installation in Walnut

Thermostat repair and smart thermostat installation in Walnut. A thermostat that reads wrong, loses its schedule or will not talk to the system can…

Thermostat service in Walnut »

Searching for AC repair near me or heating repair near me in Walnut?

If you typed "AC repair near me" from Walnut, this is the page for you. Our technicians work Walnut neighborhoods daily and know the equipment common to homes here, from attic split systems to rooftop packaged units, so diagnosis is fast and repairs are done right.

How a service call works

Call or book online

Tell us what the system is doing. Our dispatcher gives you an honest arrival window, often the same day.

Diagnosis on arrival

The technician tests the system, shows you what failed and explains why in plain language.

Flat price, your approval

You get a written price for the repair before any work begins. No hourly surprises.

Repair and verify

We fix it, test the system under load and leave the work area clean.

What Walnut customers say

★★★★★

Fast response, clear explanation, and the price matched the quote to the dollar. This is who I call for HVAC repair now.

Kevin O., Walnut
★★★★★

Installed a ductless mini split in our garage conversion. Neat work, quiet unit, and they walked us through the remote and app. Very happy.

Patricia H., Walnut
★★★★★

Our AC quit during the hottest week of the year and they had a technician at our Walnut home the same afternoon. Fixed a capacitor, charged exactly what was quoted. Cold air within an hour.

Maria G., Walnut

Walnut, CA service area map

Nearby cities we also serve

Our technicians cover Walnut and every neighboring community. Choose your city for local AC and heating repair:

See all California service areas »

Walnut AC & heating repair FAQ

What should I do if my AC is not cooling before you arrive?

Turn the system off at the thermostat, check and replace the air filter, and make sure the outdoor unit is clear of debris. If the coil is frozen, set the fan to on so it can thaw.

Do you offer 24/7 emergency AC and heating repair in Walnut?

Yes. Our emergency line is answered 24 hours a day, every day of the year, and technicians are on call across Walnut for after-hours air conditioning, furnace and heat pump repairs.

Do you service commercial buildings in Walnut?

Yes. We repair and maintain rooftop units, split systems and ductless systems for offices, restaurants, retail and light industrial properties.

Do you install new air conditioners and furnaces in Walnut?

Yes. We install central air, heat pumps, gas and electric furnaces and ductless mini splits, with free in-home estimates and financing options.

How much does AC repair or furnace repair cost in Walnut?

After diagnosis you receive a flat, written price before any work begins. Small repairs such as capacitors, contactors, igniters and flame sensors are inexpensive; we only recommend replacement when repair no longer makes sense.

Need AC repair or heating repair in Walnut, CA right now?

One call, honest pricing, fast response. Open 24 hours a day.

Call (855) 459-5498
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