Upfront Quote
Chicago HVAC Specialists
Comfort you cancount on,furnace to AC
Fast O'Brien & Sons HVAC provides AC repair, furnace installation, and duct cleaning across Chicago and surrounding suburbs. Clear quotes and dependable service, every visit.
AC Repair & Furnace InstallationQuality-Backed WorkDuct Cleaning & Air QualityServing Chicagoland
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Tell us what's going on · We'll call you back · Fast scheduling
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Why Chicago homeowners and businesses call Fast O'Brien & Sons HVAC
- Experienced HVAC Technicians
- 100% Satisfaction Guaranteed
- Trusted, Qualified Local Technicians
- Honest and Transparent Pricing
- Residential and Commercial HVAC Services
- Fully Insured
- Professional HVAC Work
- Free Estimates
- Honest Recommendations and Estimates
We accept:
External FinancingCredit CardZelleCashCheckApple Pay
3
HVAC Services
5
Service Areas
7
Days a Week · Open Late
AC RepairFurnace InstallationDuct CleaningUpfront PricingChicago Service AreasFree EstimatesFast Response
AC RepairFurnace InstallationDuct CleaningUpfront PricingChicago Service AreasFree EstimatesFast Response
What We Do
View All Services HVAC services for home and business
Three core HVAC services, one local crew. From a struggling AC to a new furnace, every job starts with a clear scope and an upfront quote.
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HVAC Services
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Service Areas
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Locally Owned
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Days a Week
Why [SERVICE]Comfort with care.
Comfort with care.
Run on straight answers.
Six commitments that shape every call we take, whether it's a broken AC in [CITY] or a furnace installation in [CITY].
3
HVAC Services
5
Service Areas
24 / 7
Hours of Operation
7
Days a Week
HVAC Is All We Do
AC repair, furnace installation, and duct cleaning. No side trades, so the details a general handyman misses are the ones we check first.
Built to Last
Proper sizing, correct refrigerant levels, sealed ducts, and safe furnace venting on every job, done the way it should be.
Clear Scope, Clear Price
You hear what's wrong, what it takes to fix it, and what it costs before any work starts. No surprise line items.
Honest Local Service
A locally owned Chicago crew that shows up when we say we will and explains everything in plain language.
Respect for Your Property
Drop cloths down, careful work around your walls and floors, and the work area cleaned before we leave.
Tested Before We Leave
Every system we touch is tested and run through a full cycle, and we walk you through what changed.
How It Works
From first call to cool air
Four steps, the same on every job, so you always know what happens next.
1
Call or Send the Form
Tell us what's happening. We ask the right questions to understand the problem before we arrive.
2
On-Site Diagnosis
We inspect the unit, the ducts, and the thermostat, then explain what we found in plain language.
3
Upfront Quote
A clear price and scope before work begins. If something changes once we open things up, you approve it first.
4
Install, Test, Walkthrough
We do the work, test the system through a full cycle, and show you the finished job.
Our Promise
We stand behind every system we touch.
HVAC work should be invisible once it's done: AC that keeps up in summer, furnaces that don't quit in winter, and ducts that just deliver clean air. If something we installed isn't right, call us and we'll come back to make it right. That's the whole policy.
Quality Workmanship
Upfront Pricing
Tested Before We Leave
Locally Owned
Why Fast O'Brien & Sons HVAC
Why Chicago homeowners and businesses call Fast O'Brien & Sons HVAC
We accept:
External FinancingCredit CardZelleCashCheckApple Pay
- Experienced HVAC Technicians
- 100% Satisfaction Guaranteed
- Trusted, Qualified Local Technicians
- Honest and Transparent Pricing
- Residential and Commercial HVAC Services
- Fully Insured
- Professional HVAC Work
- Free Estimates
- Honest Recommendations and Estimates
Ready When You Are
Let's get your comfort right
Send a few details about the job and we'll call you back with next steps.
(312) 555-0199
- Upfront pricing before work starts
- Professional HVAC installs and repairs
- Free estimates on every job
Coverage
Areas we serve
HVAC service across 5 communities in the Chicago area, from Chicago and Evanston to Oak Park and Skokie.
5 Service Areas
Neighborhoods & CitiesView all