HVAC Services in Livermore, CA
Livermore runs hot in summer and cold enough in winter to matter. All-Air covers the whole system — AC repair and replacement, furnace work, ducts, and indoor air — with parts stocked minutes away at our 4th Street warehouse and a $99 diagnostic that ends the guessing before any work begins.
AC Repair in Livermore, CA
Livermore summers hit triple digits, and a dead AC can’t wait. We repair every brand, run calls 7 days a week, and stock common parts minutes away at our Livermore warehouse — so most cooling repairs are finished in one visit. Every repair starts with a $99 diagnostic and a written quote before any work begins — and there’s a $50-off diagnostic coupon at the bottom of this page.
A recent All-Air Lennox installation by our factory-trained technicians.
Air Conditioning Installations
Whether you’re upgrading an outdated system or installing a new one, we help you choose an energy-efficient air conditioning system suited to your home cooling equipment needs. We specialize in both central AC systems and ductless mini-splits, ensuring that your home stays cool without wasting energy. If you need air conditioning replacement, we’ve got you covered with top-tier installations.
Every new system we install runs on R454B — the refrigerant California now requires on new equipment. As a Lennox Premier Dealer we carry the Dave Lennox Signature Series, backed by our 4× Lennox Centurion Award — top 5% of dealers nationwide.
Air Conditioning Repairs
If your AC isn’t cooling properly or has stopped working, our air conditioner repair technicians offer fast and reliable service. We handle common issues such as:
- Weak airflow
- Refrigerant leaks
- Faulty thermostats
- Strange noises or odors
Our goal is to restore your air conditioning system quickly, ensuring your home remains comfortable.
No guesswork and no surprises: the $99 diagnostic pinpoints the fault, you approve a written quote, then we fix it.
Preventative AC Maintenance
Routine Air Conditioning & Furnace Services help prevent major issues and ensure your system operates at peak efficiency. Our seasonal tune-ups include filter changes, refrigerant checks, coil cleaning, and full system diagnostics to keep your AC running smoothly and minimize energy waste throughout the summer.
Every tune-up follows our written 88-point inspection checklist — the same list on every visit, with the completed report shared with you.
Is your system aging? A recent replacement
Not sure which side of that line you’re on? Read our honest repair-or-replace breakdown.
Furnace Repair in Livermore, CA
Tri-Valley winters are mild until the night your furnace quits — then a cold house can’t wait for Monday. We repair every major brand, run heating calls 7 days a week, and stock common furnace parts at our 4th Street Livermore warehouse, so most heat-out calls end with the heat back on in one visit. Every repair starts with the $99 diagnostic and a written quote you approve first.
Lennox furnace with Healthy Climate filtration installed by All-Air factory-trained technicians.
Efficient Heating System Installations
When a furnace is past saving, we size the replacement to your home — gas furnaces, heat pumps, and dual-fuel systems matched to your ducts and your rooms, not guessed from the old unit’s label.
As a Lennox Premier Dealer carrying the Dave Lennox Signature Series, we put every replacement option in a written quote with exact pricing — and we check your ducts first, because duct condition decides how the new system performs.
Heating System Repairs
If your furnace quits, short-cycles, or won’t turn on, our factory-trained techs diagnose it the same way we handle AC work: the $99 diagnostic pinpoints the fault, you approve a written quote, then we fix it. Common calls we run:
- Inconsistent heating
- Unusual noises or odors
- System not turning on
- Short cycling
Because furnace parts are stocked minutes away at our 4th Street warehouse, most heating repairs are finished on the first visit.
Seasonal Heating Maintenance
A furnace tune-up before winter catches cracked igniters, weak blowers, and clogged filters while they’re still cheap fixes — and keeps the system running safely and efficiently through the cold months.
Heating tune-ups run the same written 88-point inspection discipline — small problems get caught while they’re still small fixes.
Indoor Air Quality Solutions in Livermore, CA
The same system that heats and cools your home also decides what you breathe. We size and install filtration and clean or seal ducts so the air moving through your house is doing its job — quietly, efficiently, and without recirculating dust it should have caught.
Air Filtration Systems
We install high-quality filtration — including the Healthy Climate line that pairs with Lennox systems — matched to your equipment and your home, so it actually captures dust and pollen instead of choking airflow. Ask about filtration during any repair or tune-up visit; it takes minutes to check what you have.
Duct Cleaning & Sealing
Leaky ducts push air you paid to cool into the attic and pull dusty air back in. We test, clean, and seal ductwork — and because duct condition decides whether a new system performs, we check it before recommending any replacement.
7-day Emergency HVAC Services
Breakdowns don’t wait for business hours. We run emergency HVAC calls 7 days a week across Livermore and the Tri-Valley — and because our parts warehouse is right here on 4th Street, the part your repair needs is usually minutes away, not a day out.
Our emergency services include:
- Heating system failures in cold weather
- Air conditioning breakdowns in extreme heat
- Electrical or gas-related HVAC issues
- Refrigerant leaks or frozen coils
Our team arrives with the tools and parts needed to resolve most issues on the first visit — and the Livermore line rings straight into our dispatch: (925) 455-4822. Warehouse visits are available by appointment.
Phones are answered around the clock — a live answering service picks up after hours — and repair calls run 7 days a week.
Livermore HVAC Questions, Answered
Why is my AC blowing warm air?
Check the two easy things first: the thermostat is set to COOL, and the air filter isn’t clogged. If it’s still blowing warm, the usual culprits are low refrigerant from a leak, a failed capacitor, or a tripped condenser. Our $99 diagnostic pinpoints it — call the Livermore line at (925) 455-4822, 7 days a week.
How much does AC repair cost in Livermore?
It depends on the fault, so we don’t guess — every repair starts with a $99 diagnostic (there’s a $50-off coupon on this page) and a written quote before any work begins. You approve the price knowing exactly what’s wrong.
Can you fix my AC today?
We run repair calls 7 days a week and come same-day whenever the schedule allows. Because our parts warehouse is in Livermore on 4th Street, the part your repair needs is usually minutes away — most repairs are finished on the first visit.
Why won’t my furnace turn on?
Check the simple things first: the thermostat is set to HEAT, the furnace power switch is on, and the filter isn’t clogged. If it still won’t fire, the usual culprits are a failed igniter, a dirty flame sensor, or a control-board fault. Our $99 diagnostic pinpoints it — call the Livermore line at (925) 455-4822, 7 days a week.
How much does furnace repair cost in Livermore?
Same process as our AC work: a $99 diagnostic finds the fault, then you approve a written quote before any repair begins. Common fixes like igniters and flame sensors cost far less than people fear — and if the honest answer is replacement, we’ll say so and show you why.
Do you repair all AC and furnace brands?
Yes — our factory-trained technicians service every major brand. For replacements, we’re a Lennox Premier Dealer carrying the Dave Lennox Signature Series, and a 4-time Lennox Centurion Award winner — top 5% of dealers nationwide.
What refrigerant do new AC systems use?
New systems in California run on R454B, the state’s current standard. If your system still uses R-22 or older R-410A, repairs remain possible, but refrigerant gets costlier as those phase down — sometimes replacement is the honest answer. We’ll tell you which side of that line you’re on.
Do you offer financing?
Yes — we work with multiple lenders, and you’ll see your exact monthly payment in writing before you approve any work. No teaser rates and no surprises at signing.
This page’s offer
$50 off the $99 Service Diagnostic — AC or furnace
Mention this page when you call the Livermore line: (925) 455-4822. Written quote before any work begins.
Get Reliable HVAC Service in Livermore, CA – Contact Us Today!
Whether you need a new home heating system, emergency repairs, or a maintenance plan, All-Air Heating & Air Conditioning — in business since 1969 — is here to help. We’re committed to providing exceptional customer service so your home stays comfortable year-round. Contact us today to schedule your service with Livermore’s trusted HVAC professionals and experience our top-tier Air Conditioning & Furnace Services.
We stand behind our work with robust service guarantees. Your investment in your comfort is protected with our extensive warranties and a commitment to your satisfaction. If you’re not happy, we’ll make it right.
Investing in your comfort shouldn’t be stressful. We offer flexible financing options to make it easy for you to choose the best system for your home or business without breaking the bank. Enjoy low monthly payments and simple application processes.